:root {
    color-scheme: light;
    --bg: #f4f7fb;
    --surface: #ffffff;
    --surface-soft: #eef4fb;
    --ink: #172033;
    --muted: #617086;
    --line: rgba(23, 32, 51, 0.12);
    --accent: #1267d8;
    --accent-strong: #0b4faa;
    --success: #217a45;
    --warning: #c36a00;
    --danger: #bf3f36;
    --shadow: 0 18px 52px rgba(43, 59, 88, 0.14);
    --header-bg: rgba(255, 255, 255, 0.74);
    --header-border: rgba(23, 32, 51, 0.12);
    --hero-glow: rgba(18, 103, 216, 0.16);
    --brand-bg: #172033;
    --brand-ink: #ffffff;
    --toast-bg: rgba(23, 32, 51, 0.94);
    --toast-ink: #ffffff;
    --selection-overlay: rgba(7, 17, 31, 0.72);
    --selection-card: rgba(255, 255, 255, 0.86);
}

:root[data-theme="sepia"] {
    color-scheme: light;
    --bg: #efe3cc;
    --surface: #fff8ea;
    --surface-soft: #ead9bc;
    --ink: #4a332b;
    --muted: #765f4d;
    --line: rgba(74, 51, 43, 0.18);
    --accent: #a96320;
    --accent-strong: #7b4214;
    --success: #457436;
    --warning: #ba7100;
    --danger: #a43d32;
    --shadow: 0 18px 52px rgba(74, 51, 43, 0.16);
    --header-bg: rgba(255, 248, 234, 0.78);
    --header-border: rgba(74, 51, 43, 0.16);
    --hero-glow: rgba(169, 99, 32, 0.16);
    --brand-bg: #6b4625;
    --brand-ink: #fff8ea;
    --toast-bg: rgba(74, 51, 43, 0.94);
    --toast-ink: #fff8ea;
    --selection-overlay: rgba(74, 51, 43, 0.66);
    --selection-card: rgba(255, 248, 234, 0.88);
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #07111f;
    --surface: #363d4a;
    --surface-soft: #444c5c;
    --ink: #eef5ff;
    --muted: #b8c5d6;
    --line: rgba(226, 232, 240, 0.28);
    --accent: #5bb4ff;
    --accent-strong: #8fd0ff;
    --success: #55c984;
    --warning: #f7b84b;
    --danger: #ff746b;
    --shadow: 0 18px 60px rgba(0, 0, 0, 0.42);
    --header-bg: rgba(45, 52, 64, 0.78);
    --header-border: rgba(148, 163, 184, 0.38);
    --hero-glow: rgba(91, 180, 255, 0.18);
    --brand-bg: #444c5c;
    --brand-ink: #eef5ff;
    --toast-bg: rgba(45, 52, 64, 0.96);
    --toast-ink: #eef5ff;
    --selection-overlay: rgba(2, 6, 23, 0.78);
    --selection-card: rgba(54, 62, 76, 0.92);
}

.mobile-only {
    display: none !important;
}

* {
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(circle at 8% 12%, var(--hero-glow), transparent 30%),
        linear-gradient(135deg, #fbfdff 0%, var(--bg) 58%, #e8f0f8 100%);
    color: var(--ink);
    font-family: "Segoe UI", "Noto Sans", system-ui, sans-serif;
}

.boot-sync-overlay {
    position: fixed;
    inset: 0;
    z-index: 5000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(244, 247, 251, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.boot-sync-overlay.is-visible {
    display: flex;
}

.boot-sync-card {
    width: min(460px, calc(100vw - 32px));
    padding: 24px 26px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--surface);
    box-shadow: var(--shadow);
    display: grid;
    gap: 10px;
    justify-items: center;
    text-align: center;
}

.boot-sync-card strong {
    font-size: 1.05rem;
}

.boot-sync-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.45;
}

.boot-sync-spinner {
    width: 34px;
    height: 34px;
    border-radius: 999px;
    border: 3px solid color-mix(in srgb, var(--accent) 22%, transparent);
    border-top-color: var(--accent);
    animation: boot-sync-spin 0.9s linear infinite;
}

@keyframes boot-sync-spin {
    to {
        transform: rotate(360deg);
    }
}

[data-theme="dark"] body {
    background:
        radial-gradient(circle at 12% 10%, rgba(91, 180, 255, 0.16), transparent 34%),
        radial-gradient(circle at 85% 0%, rgba(85, 201, 132, 0.1), transparent 30%),
        linear-gradient(135deg, #020617 0%, var(--bg) 58%, #0d1626 100%);
}

[data-theme="dark"] .boot-sync-overlay {
    background: rgba(7, 17, 31, 0.82);
}

[data-theme="sepia"] body {
    background:
        radial-gradient(circle at 10% 12%, rgba(169, 99, 32, 0.14), transparent 32%),
        linear-gradient(135deg, #f8efd8 0%, var(--bg) 62%, #e6d1ad 100%);
}

button,
a {
    font: inherit;
}

.app-shell {
    width: max-content;
    max-width: 100%;
    margin: 0 auto;
    padding: 18px 22px 22px;
}

.app-brand-pill {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 0 auto 16px;
    padding: 8px 24px;
    width: max-content;
    border: 1px solid var(--header-border);
    border-radius: 20px;
    background: var(--header-bg);
    box-shadow: 0 4px 16px rgba(23, 32, 51, 0.08);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    cursor: default;
}

.app-brand-pill h1 {
    margin: 0;
    font-size: 1.15rem;
    letter-spacing: 0.02em;
    color: var(--ink);
}

.app-header {
    position: sticky;
    top: 12px;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    max-width: 100%;
    margin: 0 auto 18px;
    padding: 10px 14px;
    border: 1px solid var(--header-border);
    border-radius: 18px;
    background: var(--header-bg);
    box-shadow: 0 16px 42px rgba(23, 32, 51, 0.12);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    isolation: isolate;
}

.header-left,
.header-user,
.mobile-toolbar-secondary,
.theme-buttons,
.settings-row {
    display: flex;
    align-items: center;
}

.header-left {
    gap: 10px;
    min-width: 0;
}

.mobile-toolbar-secondary {
    gap: 10px;
    min-width: 0;
}

.header-user {
    gap: 10px;
    min-width: 0;
}

.header-btn,
.user-card,
.power-button,
.mini-toggle,
.theme-switch-btn {
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    color: var(--ink);
    box-shadow: 0 8px 20px rgba(23, 32, 51, 0.06);
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease, color 0.16s ease;
}

.header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 42px;
    padding: 9px 15px;
    border-radius: 13px;
    text-decoration: none;
    font-weight: 850;
    white-space: nowrap;
}

.header-btn:hover,
.user-card:hover,
.power-button:hover,
.mini-toggle:hover,
.theme-switch-btn:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
}

.pair-header-btn strong {
    min-width: 64px;
    color: var(--accent);
    text-align: left;
}

.header-left .header-btn [data-deep-i18n="levelsTitle"] {
    display: none;
}

.header-home-icon {
    display: none;
}

.settings-menu {
    position: relative;
    z-index: 20001;
}

.settings-popover {
    position: absolute;
    top: calc(100% + 10px);
    left: 50%;
    z-index: 20002;
    display: none;
    width: min(360px, calc(100vw - 32px));
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface);
    box-shadow: var(--shadow);
    transform: translateX(-50%);
}

.settings-popover.is-open {
    display: grid;
    gap: 12px;
}

body.settings-popover-open .app-grid,
body.settings-popover-open .workspace,
body.settings-popover-open .hero-panel,
body.settings-popover-open .level-info,
body.settings-popover-open #main-training-actions {
    pointer-events: none;
}

body.settings-popover-open .app-header,
body.settings-popover-open .settings-menu,
body.settings-popover-open .settings-popover {
    pointer-events: auto;
}

.settings-row {
    justify-content: space-between;
    gap: 12px;
    min-height: 42px;
}

.settings-row--stacked {
    align-items: stretch;
    flex-direction: column;
}

.settings-popover .settings-row--language {
    order: 3;
}

.settings-label {
    color: var(--muted);
    font-weight: 850;
}

.mini-toggle {
    min-width: 44px;
    min-height: 36px;
    border-radius: 11px;
    font-size: 1rem;
}

.volume-control {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 120px;
}

.volume-control input {
    width: 100%;
    accent-color: var(--accent);
}

.theme-buttons {
    gap: 8px;
}

.theme-switch-btn {
    display: grid;
    place-items: center;
    width: 38px;
    height: 36px;
    border-radius: 11px;
    font-weight: 900;
}

.theme-switch-btn.active {
    border-color: var(--accent);
    background: var(--accent);
    color: #fff;
}

.interface-lang-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 3px;
    border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.lang-switch-btn {
    flex: 1 1 0;
    min-width: 36px;
    min-height: 34px;
    border: none;
    border-radius: 14px;
    background: transparent;
    color: var(--ink);
    font-size: 0.78rem;
    font-weight: 800;
    cursor: pointer;
    transition: background-color 0.16s ease, color 0.16s ease, transform 0.16s ease;
}

.lang-switch-btn.active {
    background: var(--accent);
    color: #fff;
}

.deep-srs-actions {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.deep-srs-button {
    position: relative;
    flex: 1;
    justify-content: flex-start;
    padding-right: 64px;
    padding-left: 20px;
    border-width: 2px;
    font-size: 0.84rem;
    font-weight: 900;
    letter-spacing: 0.01em;
    line-height: 1.05;
    white-space: nowrap;
    container-type: inline-size;
}

.deep-srs-button__label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: clamp(0.6rem, 11cqw, 1em);
}

.deep-srs-button__badge {
    position: absolute;
    top: 50%;
    right: 16px;
    transform: translateY(-50%);
    min-width: 24px;
    height: 24px;
    padding: 0 6px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85em;
    line-height: 1;
    color: #fff;
}

.deep-srs-settings-button {
    min-width: 48px;
    padding: 0;
    border-width: 2px;
}

.user-card {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 160px;
    min-height: 46px;
    padding: 6px 10px;
    border-radius: 15px;
    text-align: left;
}

.user-avatar {
    display: grid;
    place-items: center;
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--surface);
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 950;
    border: 1px solid var(--line);
    overflow: hidden;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.user-meta {
    display: grid;
    min-width: 0;
    flex: 1;
    line-height: 1.1;
}

.user-meta strong,
.user-meta span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-meta strong {
    font-size: 0.98rem;
}

.user-meta span {
    color: var(--muted);
    font-size: 0.78rem;
}

.status-dot {
    width: 11px;
    height: 11px;
    border-radius: 999px;
    border: 2px solid var(--surface);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.16);
    flex: 0 0 auto;
}

.status-dot.is-online {
    background: var(--success);
}

.status-dot.is-offline {
    background: var(--warning);
}

.status-dot.is-dictionary {
    background: var(--accent);
}

.power-button {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(135deg, #ff766b, #e83e4c);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.42);
}

.power-button svg {
    width: 23px;
    height: 23px;
    stroke-width: 2.4;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 64px;
    margin-bottom: 18px;
}

.project-hero {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface) 78%, transparent);
    box-shadow: 0 12px 38px rgba(23, 32, 51, 0.08);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--brand-bg);
    color: var(--brand-ink);
    font-weight: 900;
    letter-spacing: 0.03em;
}

.brand h1 {
    margin: 0;
    font-size: clamp(1.45rem, 4vw, 2.25rem);
    line-height: 1;
}

.brand p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.94rem;
}

.top-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}

.alpha-badge,
.status-pill {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.72);
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.alpha-badge {
    color: var(--warning);
    background: rgba(195, 106, 0, 0.1);
}

.app-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

.panel {
    border: 1px solid var(--line);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    box-shadow: var(--shadow);
}

.level-rail {
    padding: 14px;
}

.rail-title,
.section-label {
    margin: 0 0 12px;
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 850;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.level-list {
    display: grid;
    gap: 10px;
}

.level-card {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    color: var(--ink);
    text-align: left;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.level-card:hover,
.level-card.is-active {
    transform: translateY(-1px);
    border-color: rgba(18, 103, 216, 0.38);
    background: color-mix(in srgb, var(--surface) 88%, var(--accent) 12%);
}

.level-card.is-locked {
    cursor: default;
}

.level-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.level-code {
    font-size: 1.35rem;
    font-weight: 900;
}

.level-state {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 800;
}

.level-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    color: var(--muted);
    font-size: 0.86rem;
}

.progress-track {
    overflow: hidden;
    height: 7px;
    margin-top: 10px;
    border-radius: 999px;
    background: var(--surface-soft);
}

.progress-fill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), #31a26d);
}

.workspace {
    display: grid;
    gap: 18px;
}

.hero-panel {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(300px, 360px);
    justify-content: space-between;
    gap: 24px;
    padding: clamp(18px, 3vw, 28px);
}

.hero-panel h2 {
    margin: 0 0 10px;
    font-size: clamp(1.75rem, 4.5vw, 3.2rem);
    line-height: 0.98;
}

.hero-panel p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.stats-strip {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 20px;
}

.stat-box {
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.25rem;
    font-weight: 900;
}

.stat-label {
    color: var(--muted);
    font-size: 0.82rem;
}

.level-info {
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface-soft) 62%, var(--surface) 38%);
}

.info-row {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    padding: 8px 0;
    border-bottom: 1px solid var(--line);
}

.info-row:last-child {
    border-bottom: 0;
}

.info-row span:first-child {
    color: var(--muted);
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}

.deep-training-main-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.deep-queue-button {
    position: relative;
    justify-content: flex-start;
    padding-right: 68px;
    padding-left: 20px;
    border-width: 2px;
    font-size: 0.84rem;
    container-type: inline-size;
}

.deep-queue-button__label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: clamp(0.6rem, 11cqw, 1em);
}

.deep-queue-button__badge {
    position: absolute;
    top: 50%;
    right: 16px;
    transform: translateY(-50%);
    min-width: 24px;
    height: 24px;
    padding: 0 6px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.84rem;
    font-weight: 900;
    line-height: 1;
    border: 2px solid currentColor;
    background: var(--surface);
    color: inherit;
}

.deep-queue-button--empty {
    border-color: color-mix(in srgb, var(--line) 90%, white);
    color: var(--muted);
}

.deep-queue-button--empty .deep-queue-button__badge {
    background: color-mix(in srgb, var(--surface) 92%, white);
}

.deep-queue-button--queued {
    border-color: var(--accent);
    color: var(--accent);
}

.deep-queue-button--queued .deep-queue-button__badge {
    background: color-mix(in srgb, var(--accent) 12%, var(--surface));
}

.deep-queue-button--active {
    border-color: var(--success);
    color: var(--success);
}

.deep-queue-button--active .deep-queue-button__badge {
    background: color-mix(in srgb, var(--success) 14%, var(--surface));
}

[data-action="open-rating-modal"],
[data-action="open-archive-modal"] {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--surface);
    color: var(--ink);
    text-decoration: none;
    font-weight: 800;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.button[hidden] {
    display: none !important;
}

.button.primary {
    border-color: var(--accent);
    background: var(--accent);
    color: #fff;
}

.button:disabled,
.button.is-disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.button:not(:disabled):hover {
    transform: translateY(-1px);
    border-color: var(--accent-strong);
}

.content-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.module-panel {
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
}

.module-panel h3 {
    margin: 0 0 6px;
    font-size: 0.95rem;
}

.module-panel p {
    margin: 0 0 10px;
    color: var(--muted);
    font-size: 0.85rem;
    line-height: 1.4;
}

.module-list {
    display: grid;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.module-list li {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 9px 0;
    border-top: 1px solid var(--line);
}

.module-list span:last-child {
    color: var(--muted);
    font-weight: 750;
}

.pair-modal {
    position: fixed;
    inset: 0;
    z-index: 3020;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background: rgba(15, 23, 42, 0.36);
}

.pair-modal.is-open {
    display: flex;
}

.pair-dialog {
    width: min(560px, 100%);
    max-height: calc(100vh - 36px);
    overflow: auto;
    padding: 22px;
}

.pair-dialog h2 {
    margin: 0 0 8px;
    font-size: 1.55rem;
}

.pair-dialog p {
    margin: 0 0 18px;
    color: var(--muted);
    line-height: 1.55;
}

.exam-dialog {
    position: relative;
}

.exam-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 20px;
}

.exam-title {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.exam-title-label {
    display: block;
}

.exam-title-category {
    display: block;
    font-size: 1rem;
    line-height: 1.3;
    color: var(--muted);
    font-weight: 700;
}

.exam-close-home {
    width: 40px;
    height: 40px;
    min-width: 40px;
    min-height: 40px;
    padding: 0;
    border-radius: 12px;
    flex: 0 0 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.exam-close-home svg {
    width: 18px;
    height: 18px;
    display: block;
    color: #22c55e;
}

.exam-admin-magic {
    z-index: 10010;
}

.pair-options {
    display: grid;
    gap: 10px;
}

.pair-option {
    min-height: 54px;
    justify-content: space-between;
}

.pair-option__route {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.pair-option__lang {
    font-weight: 800;
    letter-spacing: 0.02em;
}

.pair-option__arrow {
    color: var(--muted);
    font-weight: 900;
}

.pair-option__progress {
    flex: 0 0 auto;
    font-weight: 900;
    color: var(--accent);
}

.lang-flag {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 18px;
    flex: 0 0 28px;
    line-height: 0;
}

.lang-flag svg {
    display: block;
    width: 28px;
    height: 18px;
    border-radius: 6px;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.14);
}

.stage-splash-modal {
    position: fixed;
    inset: 0;
    z-index: 20050;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.16), transparent 44%),
        rgba(42, 27, 12, 0.56);
    backdrop-filter: blur(8px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.stage-splash-modal.is-open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.stage-splash-card {
    position: relative;
    width: min(560px, calc(100vw - 48px));
    border-radius: 32px;
    overflow: hidden;
    background: rgba(255, 248, 236, 0.96);
    box-shadow: 0 28px 60px rgba(73, 42, 10, 0.28);
    transform: translateY(18px) scale(0.97);
    transition: transform 0.4s ease;
}

.stage-splash-modal.is-open .stage-splash-card {
    transform: translateY(0) scale(1);
}

.stage-splash-image {
    display: block;
    width: 100%;
    height: auto;
    max-height: min(78vh, 820px);
    object-fit: contain;
    cursor: pointer;
}

.stage-splash-caption {
    position: absolute;
    left: 10%;
    right: 10%;
    bottom: 12%;
    min-height: 7%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    pointer-events: none;
}

.stage-splash-title {
    color: #ffd84a;
    text-shadow:
        0 2px 6px rgba(0, 0, 0, 0.85),
        0 0 18px rgba(255, 196, 44, 0.22);
    font-size: clamp(1.02rem, 2vw, 1.46rem);
    font-weight: 900;
    letter-spacing: 0.02em;
    line-height: 1;
    white-space: nowrap;
}

.stage-splash-title.is-long {
    font-size: clamp(0.92rem, 1.78vw, 1.28rem);
}

.stage-splash-title.is-xlong {
    font-size: clamp(0.82rem, 1.58vw, 1.12rem);
}

.toast {
    position: fixed;
    top: calc(24px + env(safe-area-inset-top, 0px));
    left: 50%;
    z-index: 4000;
    width: max-content;
    max-width: min(420px, calc(100vw - 36px));
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--toast-bg);
    color: var(--toast-ink);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translate(-50%, -10px);
    pointer-events: none;
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.session-word-text.is-clickable {
    cursor: pointer;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.session-word-text.is-clickable:hover {
    transform: scale(1.03);
}

.session-word-text.is-clickable:active {
    transform: scale(1.06);
}

.toast.is-visible {
    opacity: 1;
    transform: translate(-50%, 0);
    pointer-events: auto;
}

.selection-modal {
    position: fixed;
    inset: 0;
    z-index: 3025;
    display: none;
    align-items: stretch;
    justify-content: center;
    padding: 18px 18px 22px;
    background: var(--selection-overlay);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.selection-modal.is-open {
    display: flex;
}

.session-modal {
    position: fixed;
    inset: 0;
    z-index: 3030;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: var(--selection-overlay);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.session-modal.is-open {
    display: flex;
}

.session-modal.is-complete {
    overflow-y: auto;
    align-items: flex-start;
    padding: 8px 18px 10px;
}

.selection-shell {
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr);
    gap: 12px;
    width: min(1380px, 100%);
    max-height: calc(100vh - 40px);
    padding: 16px;
    overflow: hidden;
    background: color-mix(in srgb, var(--selection-card) 100%, transparent);
}

.session-shell {
    display: grid;
    grid-template-rows: auto auto auto minmax(0, 1fr);
    gap: 16px;
    width: min(1080px, 100%);
    max-height: calc(100vh - 40px);
    padding: 20px;
    overflow: hidden;
    background: color-mix(in srgb, var(--selection-card) 100%, transparent);
}

.session-shell.is-complete {
    display: block;
    width: min(860px, 100%);
    max-height: none;
    padding: 0;
    overflow: visible;
    background: transparent;
    box-shadow: none;
}

.selection-header,
.session-header,
.selection-summary,
.session-progress,
.selection-main-header,
.theme-card-header,
.category-card-top,
.word-card-top {
    display: flex;
    align-items: center;
}

.selection-header,
.session-header,
.selection-main-header,
.theme-card-header,
.category-card-top,
.word-card-top {
    justify-content: space-between;
    gap: 14px;
}

.session-header {
    position: relative;
    margin-bottom: -4px;
}

.session-header.is-hidden,
.session-progress.is-hidden,
.session-options.is-hidden {
    display: none;
}

.selection-header {
    align-items: center;
    gap: 16px;
    margin-bottom: 10px;
    padding: 10px 16px;
    background: color-mix(in srgb, var(--surface-soft) 40%, var(--surface) 60%);
    border-radius: 18px;
    border: 1px solid var(--line);
}

.selection-header .section-label {
    display: none;
}

.selection-header-content {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
}

.session-header>div {
    display: grid;
    gap: 6px;
    min-width: 0;
}

.selection-header h2,
.session-header h2,
.selection-main h3,
.selection-summary-panel h3,
.theme-card h4 {
    margin: 0;
}

.selection-subtitle,
.session-subtitle,
.selection-main-header p,
.selection-summary-text,
.theme-card p,
.category-card-meta,
.category-card-progress,
.selection-empty {
    margin: 6px 0 0;
    color: var(--muted);
    line-height: 1.5;
}

.selection-subtitle {
    max-width: 980px;
}

.selection-main-header p,
.theme-card p {
    margin: 0;
}

.selection-summary {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
}

.session-progress {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    align-items: stretch;
}

.selection-pill {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    height: 100%;
    min-height: 64px;
    padding: 9px 13px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 84%, transparent);
}

.selection-pill span {
    color: var(--muted);
    font-size: 0.6rem;
    line-height: 1.1;
    font-weight: 800;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.selection-pill strong {
    font-size: 1.05rem;
    white-space: nowrap;
}

.selection-pill-button {
    width: 100%;
    cursor: pointer;
    text-align: left;
}

.selection-grid {
    display: grid;
    grid-template-columns: 264px minmax(0, 1fr) 250px;
    gap: 8px;
    min-height: 0;
}

.session-body {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 14px;
    min-height: 0;
}

.session-body.is-complete {
    grid-template-columns: minmax(0, 1fr);
}

.session-notifications {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    margin: -6px 0;
    padding: 4px 12px;
    border-radius: 8px;
    background: color-mix(in srgb, var(--surface) 86%, transparent);
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 500;
    text-align: center;
    border: 1px solid var(--line);
    transition: all 0.3s ease;
    overflow: hidden;
    position: relative;
}

.session-notifications-text {
    display: inline-block;
    white-space: nowrap;
}

.session-notifications-text.is-marquee {
    padding-left: 100%;
    animation: marquee-scroll 8s linear infinite;
    flex-shrink: 0;
}

@keyframes marquee-scroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-100%);
    }
}

.session-notifications.type-success {
    background: color-mix(in srgb, var(--success) 15%, transparent);
    color: color-mix(in srgb, var(--success) 90%, var(--ink));
    border-color: color-mix(in srgb, var(--success) 30%, transparent);
}

.session-notifications.type-error {
    background: color-mix(in srgb, var(--danger) 15%, transparent);
    color: var(--danger);
    border-color: color-mix(in srgb, var(--danger) 30%, transparent);
}

.session-notifications.type-hint {
    background: color-mix(in srgb, var(--warning) 15%, transparent);
    color: color-mix(in srgb, var(--warning) 90%, var(--ink));
    border-color: color-mix(in srgb, var(--warning) 30%, transparent);
}

.session-notifications.type-info {
    background: var(--ink);
    color: var(--surface);
    border-color: var(--ink);
}

.session-card,
.session-side {
    min-height: 0;
}

.session-side.is-hidden {
    display: none;
}

.session-card {
    display: grid;
    grid-template-rows: auto auto auto auto;
    align-content: start;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface) 86%, transparent);
    position: relative;
}

.session-card.is-complete {
    padding: 0;
    border: none;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
}

.session-word {
    font-size: clamp(1.85rem, 3.9vw, 2.75rem);
    font-weight: 900;
    line-height: 0.98;
}

.session-word.is-complete {
    font-size: initial;
    font-weight: 400;
    line-height: normal;
}

.session-word-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    align-items: center;
    padding: 34px 12px 4px 12px;
    border: none;
    border-bottom: 3px solid color-mix(in srgb, #d89f33 50%, var(--line));
    border-radius: 8px 8px 0 0;
    background: linear-gradient(180deg, transparent 0%, color-mix(in srgb, #d89f33 12%, transparent) 100%);
    box-shadow: none;
    margin-bottom: 5px;
}

.session-card .session-word-shell .tts-button,
.session-card .session-word-shell .session-tts-button {
    position: absolute;
    top: 14px;
    right: 14px;
}

.session-word-text {
    flex: 1 1 auto;
    text-align: center;
}

.session-word.is-stage-two {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.5;
}

.session-completion {
    display: grid;
    gap: 14px;
    padding: 18px 20px;
    border-radius: 20px;
    background:
        radial-gradient(circle at top right, rgba(190, 124, 36, 0.12), transparent 38%),
        color-mix(in srgb, var(--surface) 90%, transparent);
}

.session-completion h3 {
    margin: 0;
    font-size: clamp(1.5rem, 2vw, 2rem);
    line-height: 1.1;
    color: var(--ink);
}

.session-completion p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}

.session-completion-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.session-completion-stat {
    display: grid;
    gap: 6px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: color-mix(in srgb, var(--surface) 94%, transparent);
}

.session-completion-stat span {
    color: var(--muted);
    font-size: 0.82rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.session-completion-stat strong {
    font-size: 1.35rem;
    line-height: 1;
    color: var(--ink);
}

@media (max-width: 720px) {
    .session-completion-stats {
        grid-template-columns: 1fr;
    }
}

.session-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-auto-rows: minmax(0, auto);
    align-content: start;
    gap: 8px;
}

.session-options.is-stage-two,
.session-options.is-stage-three,
.session-options.is-stage-four {
    grid-template-columns: 1fr;
}

.session-options-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 8px;
}

.session-option {
    min-height: 48px;
    padding: 10px 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    color: var(--ink);
    font: inherit;
    font-size: 1.15rem;
    font-weight: 800;
    text-align: left;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
    max-width: 100%;
    word-break: break-word;
    white-space: normal;
}

.session-option:hover:not(:disabled) {
    transform: translateY(-1px);
    border-color: var(--accent);
}

.session-option.is-selected {
    border-color: var(--accent);
}

.session-option.is-correct {
    background: rgba(85, 201, 132, 0.14);
    border-color: rgba(85, 201, 132, 0.42);
    color: var(--success);
}

.session-option.is-wrong {
    background: rgba(255, 116, 107, 0.12);
    border-color: rgba(255, 116, 107, 0.36);
    color: var(--danger);
}

.session-feedback {
    position: absolute;
    top: calc(100% + 92px);
    left: 0;
    min-width: 100%;
    padding: 8px 12px;
    background: var(--success);
    color: white;
    font-weight: 700;
    font-size: 0.85rem;
    line-height: 1.3;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 20;
    pointer-events: none;
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.session-feedback.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (min-width: 769px) {
    .session-feedback {
        top: 50%;
        left: 50%;
        min-width: unset;
        width: max-content;
        max-width: 500px;
        transform: translate(-50%, calc(-50% + 4px));
        text-align: center;
    }

    .session-feedback.is-visible {
        transform: translate(-50%, -50%);
    }
}

.session-feedback.is-wrong {
    background: var(--danger);
}

.session-placeholder {
    padding: 14px 16px;
    border: 1px dashed var(--line);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    color: var(--muted);
    line-height: 1.5;
}

.session-context-block {
    display: grid;
    gap: 8px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 90%, transparent);
}

.session-context-sentence {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.55;
    color: var(--ink);
}

.session-context-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.session-context-head .session-tts-button,
.session-context-head .session-stage-four-hint-trigger,
.session-context-head .icon-button {
    width: 28px !important;
    min-width: 28px !important;
    height: 28px !important;
    min-height: 28px !important;
    font-size: 1.1rem !important;
    padding: 0;
}

.session-tts-button {
    flex: 0 0 auto;
    width: 38px;
    height: 38px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: color-mix(in srgb, var(--surface) 96%, transparent);
    color: var(--ink);
    font-size: 1rem;
    cursor: pointer;
    transition: transform 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.session-tts-button:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
}

.session-stage-block {
    display: grid;
    gap: 12px;
}

.session-context-fragment {
    white-space: pre-wrap;
}

.session-gap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 92px;
    min-height: 42px;
    margin: 0 6px;
    padding: 4px 12px;
    border: 1px dashed var(--accent);
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    color: var(--accent-strong);
    vertical-align: middle;
    transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.session-gap.is-filled {
    border-style: solid;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
}

.session-gap.is-correct {
    border-color: rgba(85, 201, 132, 0.5);
    background: rgba(85, 201, 132, 0.12);
    color: var(--success);
}

.session-gap.is-wrong {
    border-color: rgba(255, 116, 107, 0.48);
    background: rgba(255, 116, 107, 0.1);
    color: var(--danger);
}

.session-fly-word {
    position: fixed;
    z-index: 9999;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
    border: 1px solid color-mix(in srgb, var(--accent) 60%, var(--line));
    border-radius: 14px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 98%, white) 0%, color-mix(in srgb, var(--surface) 94%, transparent) 100%);
    color: var(--accent-strong);
    font-weight: 800;
    pointer-events: none;
    transform: translate(0, 0) scale(1);
    opacity: 0.98;
    transition: transform 0.36s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.36s ease;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}

.session-side {
    display: grid;
    grid-template-rows: auto auto minmax(0, 1fr) auto;
    gap: 12px;
    padding: 14px;
}

.session-side h3 {
    margin: 0;
}

.session-chip-list {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 8px;
    overflow: auto;
}

.session-chip {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 7px 10px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 90%, transparent);
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 800;
}

.session-chip.is-current {
    border-color: var(--accent);
    color: var(--accent);
}

.session-chip.is-correct {
    border-color: rgba(85, 201, 132, 0.38);
    color: var(--success);
}

.session-chip.is-wrong {
    border-color: rgba(255, 116, 107, 0.32);
    color: var(--danger);
}

.session-chip.is-concealed {
    filter: blur(5px);
    opacity: 0.65;
}

.session-assembly-line {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    min-height: 46px;
}

.session-assembly-inline {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    min-height: 56px;
    width: 100%;
}

.session-assembly-inline.is-drop-end {
    background: color-mix(in srgb, var(--accent) 4%, transparent);
    border-radius: 16px;
}

.session-assembly-chip {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 36px;
    padding: 6px 10px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06), inset 0 -2px 0 color-mix(in srgb, var(--ink) 6%, transparent);
    color: var(--ink);
    font: inherit;
    font-weight: 700;
    cursor: grab;
    transition: transform 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.24s ease, background-color 0.24s ease, border-color 0.24s ease;
    max-width: 100%;
    word-break: break-word;
    white-space: normal;
    text-align: left;
}

.session-assembly-chip:active {
    cursor: grabbing;
}

.session-assembly-placeholder {
    color: var(--muted);
    font-weight: 700;
}

.session-assembly-chip.is-drag-over,
.session-missing-token.is-drag-over {
    background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}

.session-assembly-chip.is-drop-before,
.session-missing-token.is-drop-before {
    transform: translateX(8px);
}

.session-assembly-chip.is-drop-after,
.session-missing-token.is-drop-after {
    transform: translateX(-8px);
}

.session-assembly-chip.is-drop-before::before,
.session-missing-token.is-drop-before::before,
.session-assembly-chip.is-drop-after::after,
.session-missing-token.is-drop-after::after {
    content: '';
    position: absolute;
    top: 10%;
    bottom: 10%;
    width: 4px;
    border-radius: 999px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 85%, white), var(--accent));
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 14%, transparent);
}

.session-assembly-chip.is-drop-before::before,
.session-missing-token.is-drop-before::before {
    left: -10px;
}

.session-assembly-chip.is-drop-after::after,
.session-missing-token.is-drop-after::after {
    right: -10px;
}

.session-assembly-chip.is-drop-landing,
.session-missing-token.is-drop-landing {
    animation: sessionPuzzleDropLanding 380ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes sessionPuzzleDropLanding {
    0% {
        transform: translateY(-10px) scale(0.96);
        opacity: 0.82;
        box-shadow: 0 14px 28px rgba(72, 122, 255, 0.12);
    }

    60% {
        transform: translateY(2px) scale(1.01);
        opacity: 1;
    }

    100% {
        transform: translateY(0) scale(1);
        opacity: 1;
        box-shadow: 0 2px 4px rgba(0, 0, 0, 0.06), inset 0 -2px 0 color-mix(in srgb, var(--ink) 6%, transparent);
    }
}

.session-inline-input {
    min-width: 40px;
    min-height: 38px;
    padding: 6px 4px;
    border: 0;
    border-radius: 999px;
    background: transparent;
    color: var(--ink);
    font: inherit;
    font-weight: 700;
    text-align: center;
}

.session-inline-input:focus {
    outline: none;
}

.session-chunk-pool {
    align-content: flex-start;
    justify-content: flex-start;
}

.session-chunk-pool .session-option {
    flex: 0 0 auto;
    width: auto;
    max-width: 100%;
    min-height: 44px;
    padding-inline: 14px;
    text-align: left;
}

.session-chunk-pool .session-option.is-empty-missing {
    opacity: 0.6;
    background: transparent;
    border: 1px dashed color-mix(in srgb, var(--muted) 60%, transparent);
    color: var(--muted);
    box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.08);
}

.session-admin-magic {
    position: fixed;
    top: 50%;
    right: 0;
    transform: translateY(-50%);
    width: 54px;
    height: 54px;
    border: 1px solid color-mix(in srgb, var(--accent) 34%, var(--line));
    border-right: none;
    border-radius: 18px 0 0 18px;
    background: linear-gradient(180deg, color-mix(in srgb, var(--surface) 94%, white) 0%, color-mix(in srgb, var(--accent) 10%, var(--surface)) 100%);
    color: var(--accent-strong);
    font-size: 1.35rem;
    font-weight: 900;
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.14);
    cursor: pointer;
    z-index: 3040;
    transition: transform 0.22s ease, border-color 0.16s ease, box-shadow 0.16s ease, opacity 0.16s ease;
    touch-action: manipulation;
}

.session-admin-magic.is-revealed:hover:not(:disabled) {
    transform: translateY(-50%) scale(1.04);
    border-color: var(--accent);
    box-shadow: 0 18px 36px rgba(0, 0, 0, 0.18);
}

.session-admin-magic:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.session-admin-magic.is-docked {
    transform: translateY(-50%) translateX(22px);
}

.session-admin-magic.is-revealed {
    transform: translateY(-50%);
}

.session-admin-magic svg,
.session-close svg {
    width: 18px;
    height: 18px;
    display: block;
}

.session-admin-history {
    position: fixed;
    top: calc(50% + 44px);
    right: 14px;
    z-index: 3041;
    display: block;
    transition: opacity 0.16s ease;
}

.session-admin-history[hidden] {
    display: none !important;
}

.session-admin-history.is-docked {
    transform: none;
}

.session-admin-history.is-revealed {
    transform: none;
}

.session-admin-history-toggle {
    display: none !important;
}

.session-history-popover {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    margin-right: 0;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface);
    box-shadow: 0 14px 32px rgba(0, 0, 0, 0.15);
    opacity: 1;
    transform: translateX(0);
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.session-history-popover[hidden] {
    display: none;
    opacity: 0;
    transform: translateX(10px);
}

.session-missing-token {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-width: 60px;
    min-height: 40px;
    padding: 0 10px;
    border: 1px dashed color-mix(in srgb, var(--accent) 70%, var(--line));
    border-left: 1px dashed color-mix(in srgb, var(--accent) 70%, var(--line));
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    transition: transform 0.24s cubic-bezier(0.2, 0.7, 0.2, 1), border-color 0.24s ease, background-color 0.24s ease, box-shadow 0.24s ease;
    max-width: 100%;
}

.session-missing-token-handle {
    position: absolute;
    top: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 16px;
    height: 16px;
    border: 2px solid color-mix(in srgb, var(--accent) 60%, var(--line));
    border-radius: 50%;
    background: var(--surface);
    cursor: grab;
    z-index: 2;
    transition: transform 0.18s ease, background-color 0.18s ease;
}

.session-missing-token-handle:hover {
    background: color-mix(in srgb, var(--accent) 12%, var(--surface));
    transform: translateX(-50%) scale(1.15);
}

.session-missing-token-handle:active {
    cursor: grabbing;
    transform: translateX(-50%) scale(0.9);
}

.session-missing-token.is-complete {
    border-style: solid;
    border-color: color-mix(in srgb, var(--ok) 55%, var(--line));
    background: color-mix(in srgb, var(--ok) 10%, var(--surface));
}

.session-missing-token.is-progress {
    border-style: solid;
    border-color: color-mix(in srgb, var(--accent) 46%, var(--line));
    background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}

.session-missing-token.is-correct {
    border-style: solid;
    border-color: rgba(105, 162, 90, 0.5);
    background: rgba(105, 162, 90, 0.12);
}

.session-missing-token.is-correct .session-inline-input {
    color: var(--success);
}

.session-missing-token.is-wrong {
    border-style: solid;
    border-color: rgba(255, 116, 107, 0.48);
    background: rgba(255, 116, 107, 0.1);
}

.session-missing-token.is-wrong .session-inline-input {
    color: var(--danger);
}

.session-missing-token.is-synonym {
    border-style: solid;
    border-color: rgba(255, 193, 7, 0.6);
    background: rgba(255, 193, 7, 0.12);
}

.session-missing-token.is-synonym .session-inline-input {
    color: #997300;
}

.session-stage-four-panel {
    display: grid;
    gap: 12px;
    align-content: start;
}

.session-completion-panel {
    display: grid;
    gap: 14px;
}

.session-completion-history {
    display: flex;
    justify-content: flex-end;
}

.session-completion-history-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-width: min(100%, 240px);
}

.session-close {
    width: 36px;
    min-width: 36px;
    height: 36px;
    min-height: 36px;
    padding: 0;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.48);
    background: rgba(255, 255, 255, 0.64);
    color: var(--accent);
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
    backdrop-filter: blur(16px) saturate(1.06);
    -webkit-backdrop-filter: blur(16px) saturate(1.06);
}

.session-close::before {
    content: none;
    display: none;
}

.session-header .session-close {
    width: 36px;
    min-width: 36px;
    padding: 0;
}

@supports (right: max(0px)) {

    .session-admin-magic,
    .session-admin-history {
        right: max(0px, env(safe-area-inset-right));
    }
}

@media (max-width: 720px) {
    .session-modal.is-complete {
        padding: 8px 8px 10px;
    }

    .session-shell.is-complete {
        width: min(100%, 560px);
        max-height: none;
        padding: 0;
        overflow: visible;
    }

    .session-completion-history {
        justify-content: stretch;
    }

    .session-completion-history-btn {
        width: 100%;
    }

}

@media (min-width: 721px) {
    .session-close {
        min-width: 52px;
    }
}

.session-completion-panel {
    display: grid;
    gap: 12px;
}

.session-archive-card {
    --archive-hero-height-desktop: 388px;
    --archive-image-shift-desktop: -30px;
    --archive-title-top-desktop: 18px;
    --archive-title-left-desktop: 22px;
    --archive-title-bg-opacity-desktop: 0.22;
    --archive-caption-bottom-desktop: 14px;
    --archive-caption-left-desktop: 22px;
    --archive-caption-bg-opacity-desktop: 0.28;
    --archive-hero-height-mobile: 320px;
    --archive-image-shift-mobile: 18px;
    --archive-title-top-mobile: 14px;
    --archive-title-left-mobile: 16px;
    --archive-title-bg-opacity-mobile: 0.2;
    --archive-caption-bottom-mobile: 10px;
    --archive-caption-left-mobile: 16px;
    --archive-caption-bg-opacity-mobile: 0.3;
    display: grid;
    gap: 0;
    border-radius: 24px;
    overflow: hidden;
    border: 1px solid rgba(21, 42, 70, 0.14);
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.9), rgba(248, 243, 235, 0.98));
    box-shadow: 0 22px 50px rgba(15, 23, 42, 0.12);
}

.session-archive-hero {
    position: relative;
    min-height: 280px;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(14, 25, 42, 0.04), rgba(14, 25, 42, 0.22)),
        linear-gradient(180deg, #2d3440 0%, #1e2530 100%);
}

.session-archive-hero-image {
    display: block;
    width: 100%;
    height: var(--archive-hero-height-desktop);
    max-height: none;
    object-fit: cover;
    object-position: center top;
    transform: translateY(var(--archive-image-shift-desktop)) scale(1.22);
}

.session-archive-hero-copy {
    position: absolute;
    top: var(--archive-title-top-desktop);
    left: var(--archive-title-left-desktop);
    right: 22px;
    display: grid;
    gap: 8px;
    color: #fff7ea;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.45);
}

.session-archive-hero-copy h3 {
    margin: 0;
    display: inline-flex;
    width: fit-content;
    max-width: min(100%, 520px);
    padding: 10px 16px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 18px;
    background: rgba(10, 20, 34, var(--archive-title-bg-opacity-desktop));
    box-shadow: 0 12px 28px rgba(3, 9, 19, 0.22);
    backdrop-filter: blur(14px) saturate(1.08);
    -webkit-backdrop-filter: blur(14px) saturate(1.08);
    font-size: clamp(1.1rem, 6vw, 2.7rem);
    line-height: 1.02;
    color: #fff7ea;
    white-space: nowrap;
}

.session-archive-hero-caption {
    position: absolute;
    left: var(--archive-caption-left-desktop);
    right: 22px;
    bottom: var(--archive-caption-bottom-desktop);
    margin: 0;
    display: inline-flex;
    align-items: center;
    width: fit-content;
    max-width: min(100%, 520px);
    padding: 8px 14px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 16px;
    background: rgba(10, 20, 34, var(--archive-caption-bg-opacity-desktop));
    box-shadow: 0 10px 24px rgba(3, 9, 19, 0.2);
    backdrop-filter: blur(12px) saturate(1.05);
    -webkit-backdrop-filter: blur(12px) saturate(1.05);
    font-size: clamp(0.98rem, 1.5vw, 1.16rem);
    font-weight: 700;
    color: #fff7ea;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5);
}

.session-archive-admin-toolbar {
    position: absolute;
    right: 24px;
    bottom: 24px;
    z-index: 9999;
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.session-archive-admin-btn {
    min-height: 38px;
    padding: 8px 12px;
    border-radius: 14px;
    border-color: rgba(255, 255, 255, 0.16);
    background: rgba(10, 20, 34, 0.56);
    color: #fff7ea;
    box-shadow: 0 12px 24px rgba(3, 9, 19, 0.2);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.session-archive-admin-btn.is-ghost {
    background: rgba(255, 255, 255, 0.08);
}

.session-archive-editor {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 10000;
    width: min(430px, calc(100vw - 48px));
    max-height: min(80vh, 680px);
    overflow: auto;
    display: grid;
    gap: 12px;
    padding: 14px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 20px;
    background: rgba(9, 16, 28, 0.92);
    color: #fff7ea;
    box-shadow: 0 22px 48px rgba(2, 8, 16, 0.36);
    backdrop-filter: blur(18px) saturate(1.06);
    -webkit-backdrop-filter: blur(18px) saturate(1.06);
}

.session-archive-editor-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    touch-action: none;
}

.session-archive-editor-head h5 {
    margin: 0;
    font-size: 1rem;
    line-height: 1.2;
    color: #fff7ea;
}

.session-archive-editor-note {
    margin: 0;
    font-size: 0.92rem;
    line-height: 1.45;
    color: rgba(255, 247, 234, 0.84);
}

.session-archive-editor-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 721px) {
    .session-archive-editor-group.is-viewport-mobile {
        display: none !important;
    }
}

.session-archive-editor-group {
    display: grid;
    gap: 10px;
    padding: 12px;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.session-archive-editor-group-title {
    font-size: 0.96rem;
    font-weight: 800;
    color: #fff7ea;
}

.session-archive-editor-control {
    display: grid;
    gap: 6px;
}

.session-archive-editor-control span {
    font-size: 0.82rem;
    line-height: 1.3;
    color: rgba(255, 247, 234, 0.88);
}

.session-archive-editor-control-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 10px;
}

.session-archive-editor-control-row strong {
    min-width: 42px;
    font-size: 0.84rem;
    text-align: right;
    color: #ffd34d;
}

.session-archive-editor-snippet {
    width: 100%;
    min-height: 184px;
    padding: 12px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(0, 0, 0, 0.22);
    color: #fff7ea;
    font: 12px/1.45 Consolas, "Courier New", monospace;
    resize: vertical;
}

.session-archive-body {
    display: grid;
    gap: 14px;
    margin: -2px 10px 8px;
    padding: 16px 16px 12px;
    border-radius: 22px;
    background:
        radial-gradient(circle at top right, rgba(189, 122, 34, 0.12), transparent 36%),
        rgba(255, 252, 247, 0.98);
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.09);
}

.session-archive-body h4 {
    margin: 0;
    font-size: clamp(1.42rem, 2.15vw, 2.12rem);
    line-height: 1.06;
    color: #13233e;
}

.session-archive-summary {
    margin: 0;
    font-size: clamp(0.96rem, 1.35vw, 1.08rem);
    line-height: 1.38;
    color: #28364f;
}

.session-archive-stats {
    display: grid;
    gap: 0;
    border: 1px solid rgba(22, 42, 67, 0.12);
    border-radius: 20px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.95);
}

.session-archive-stat {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid rgba(22, 42, 67, 0.1);
}

.session-archive-stat:last-child {
    border-bottom: none;
}

.session-archive-stat-icon {
    flex: 0 0 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.18rem;
    color: #0e7a64;
}

.session-archive-stat strong {
    font-size: clamp(0.96rem, 1.28vw, 1.08rem);
    color: #13233e;
}

.session-archive-quote {
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    padding: 8px 12px;
    border: 1px solid rgba(220, 178, 142, 0.42);
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(255, 249, 243, 0.98), rgba(255, 255, 255, 0.92));
}

.session-archive-quote-avatar {
    width: 56px;
    height: 56px;
    object-fit: cover;
    border-radius: 16px;
}

.session-archive-quote p {
    margin: 0;
    font-size: clamp(0.94rem, 1.3vw, 1.05rem);
    line-height: 1.34;
    color: #1d2740;
}

.session-archive-actions {
    gap: 8px;
}

.session-archive-actions-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.session-archive-action {
    min-height: 48px;
    font-size: 0.98rem;
    font-weight: 900;
}

.session-archive-action--menu {
    width: min(100%, 360px);
    justify-self: center;
}

@media (max-width: 720px) {
    .session-archive-body {
        margin: -4px 8px 8px;
        padding: 16px 14px 12px;
    }

    .session-archive-hero-image {
        height: var(--archive-hero-height-mobile);
        max-height: none;
        object-position: center top;
        transform: translateY(var(--archive-image-shift-mobile)) scale(1.03);
    }

    .session-archive-hero-copy {
        top: var(--archive-title-top-mobile);
        left: var(--archive-title-left-mobile);
        right: 16px;
    }

    .session-archive-hero-copy h3 {
        --archive-title-bg-opacity-desktop: var(--archive-title-bg-opacity-mobile);
    }

    .session-archive-hero-caption {
        left: var(--archive-caption-left-mobile);
        right: 16px;
        bottom: var(--archive-caption-bottom-mobile);
        font-size: 0.98rem;
        --archive-caption-bg-opacity-desktop: var(--archive-caption-bg-opacity-mobile);
    }

    .session-archive-admin-toolbar {
        right: 12px;
        left: 12px;
        bottom: 12px;
        justify-content: stretch;
    }

    .session-archive-admin-btn {
        flex: 1 1 0;
        justify-content: center;
    }

    .session-archive-editor {
        top: 12px;
        right: 12px;
        left: 12px;
        width: calc(100vw - 24px);
        max-height: min(80vh, 640px);
    }

    .session-archive-editor-group.is-viewport-desktop {
        display: none !important;
    }

    .session-archive-quote {
        grid-template-columns: 52px minmax(0, 1fr);
        gap: 10px;
    }

    .session-archive-quote-avatar {
        width: 52px;
        height: 52px;
        border-radius: 14px;
    }

    .session-archive-actions-grid {
        grid-template-columns: 1fr;
    }

    .session-archive-action--menu {
        width: 100%;
    }
}

.session-stage-four-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.session-stage-four-hint-trigger {
    width: 54px;
    min-width: 54px;
    height: 54px;
    min-height: 54px;
    padding: 0;
    border-radius: 50%;
    font-size: 1.35rem;
    box-shadow: 0 14px 28px rgba(169, 99, 32, 0.16);
}

.session-stage-four-hint-empty {
    padding: 8px 4px 2px;
    color: var(--muted);
    line-height: 1.45;
}

.session-stage-four-hint-modal {
    position: fixed;
    inset: 0;
    z-index: 3040;
    display: grid;
    place-items: center;
    padding: 24px;
}

.session-stage-four-hint-backdrop {
    position: absolute;
    inset: 0;
    border: 0;
    background: rgba(16, 18, 26, 0.34);
    cursor: pointer;
}

.session-stage-four-hint-dialog {
    position: relative;
    z-index: 1;
    display: grid;
    gap: 12px;
    width: min(560px, calc(100vw - 48px));
    max-height: min(80vh, 720px);
    overflow: auto;
    padding: 18px;
    border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line));
    border-radius: 22px;
    background:
        radial-gradient(circle at top right, rgba(216, 159, 51, 0.12), transparent 34%),
        color-mix(in srgb, var(--surface) 98%, transparent);
    box-shadow: var(--shadow);
}

.session-stage-four-hint-close {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 40px;
    min-width: 40px;
    height: 40px;
    min-height: 40px;
    padding: 0;
    border-radius: 50%;
    font-size: 1.4rem;
    line-height: 1;
}

.session-stage-four-hint-toolbar {
    display: inline-flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    margin-left: auto;
}

.session-stage-four-segment {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px;
    border: 1px solid var(--line);
    border-radius: 999px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.session-stage-four-segment .button.is-compact {
    min-height: 30px;
    padding: 5px 10px;
    border-color: transparent;
    border-radius: 999px;
    background: transparent;
    font-size: 0.84rem;
    box-shadow: none;
}

.session-stage-four-segment .button.is-active {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--accent) 16%, var(--surface));
    color: var(--accent-strong);
}

.session-stage-four-hint-toolbar .session-tts-button {
    flex: 0 0 auto;
}

.session-stage-four-hint-stack {
    display: grid;
    gap: 12px;
}

.session-stage-four-hint-bubble {
    display: grid;
    gap: 8px;
    width: 100%;
    padding: 12px 14px;
    border: 1px dashed color-mix(in srgb, var(--accent) 34%, var(--line));
    border-radius: 16px;
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    color: inherit;
    text-align: left;
}

.session-stage-four-hint-bubble .session-context-sentence {
    margin: 0;
    color: var(--text-secondary);
}

.session-context-highlight {
    background-color: rgba(245, 158, 11, 0.25);
    border-radius: 4px;
    padding: 0 2px;
    color: var(--text-primary);
    font-weight: 500;
}

.session-stage-four-hint-letter-zone {
    display: grid;
    gap: 8px;
    padding: 12px 14px;
    border: 1px dashed color-mix(in srgb, var(--accent) 24%, var(--line));
    border-radius: 16px;
    background: color-mix(in srgb, var(--surface) 95%, transparent);
}

.session-stage-four-hint-penalty {
    margin: 0;
    color: var(--muted);
    line-height: 1.45;
}

.session-stage-four-input-wrap {
    display: grid;
    gap: 8px;
    text-align: center;
}

.session-stage-four-input {
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 94%, transparent);
    color: var(--ink);
    font: inherit;
    font-weight: 700;
    transition: border-color 140ms ease, box-shadow 140ms ease, background-color 140ms ease, color 140ms ease;
}

.session-stage-three-inline-input {
    display: inline-flex;
    width: auto;
    min-width: 180px;
    max-width: min(320px, 100%);
    margin: 0 8px;
    vertical-align: middle;
}

.session-stage-four-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}

.session-stage-four-input:disabled {
    opacity: 0.72;
    cursor: not-allowed;
}

.session-stage-four-input.is-progress {
    border-color: color-mix(in srgb, var(--accent) 46%, var(--line));
    background: color-mix(in srgb, var(--accent) 8%, var(--surface));
}

.session-stage-four-input.is-correct {
    border-color: rgba(105, 162, 90, 0.5);
    background: rgba(105, 162, 90, 0.12);
    color: var(--success);
}

.session-stage-four-input.is-wrong {
    border-color: rgba(255, 116, 107, 0.48);
    background: rgba(255, 116, 107, 0.1);
    color: var(--danger);
}

.session-stage-four-input.is-synonym {
    border-color: rgba(255, 193, 7, 0.6);
    background: rgba(255, 193, 7, 0.12);
    color: #997300;
}

.session-stage-four-input.is-hinted {
    box-shadow: inset 0 -2px 0 color-mix(in srgb, var(--accent) 62%, transparent);
}

.session-stage-four-input.is-auto-replaced {
    animation: sessionInputAutoReplaceFlash 360ms ease;
}

@keyframes sessionInputAutoReplaceFlash {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 0%, transparent);
    }

    35% {
        transform: scale(1.015);
        box-shadow: 0 0 0 6px color-mix(in srgb, var(--accent) 18%, transparent);
    }

    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 0%, transparent);
    }
}

.session-stage-four-letter-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    min-height: 42px;
}

.session-stage-four-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    min-height: 34px;
    padding: 4px 8px;
    border: 1px dashed color-mix(in srgb, var(--accent) 34%, var(--line));
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface) 92%, transparent);
    color: var(--muted);
    font-weight: 800;
}

.session-stage-four-letter.is-pending.is-pickable {
    cursor: pointer;
    color: transparent;
    background: color-mix(in srgb, var(--surface) 80%, transparent);
}

.session-stage-four-letter.is-pending.is-pickable:hover {
    border-style: solid;
    border-color: color-mix(in srgb, var(--accent) 48%, var(--line));
    background: color-mix(in srgb, var(--accent) 8%, var(--surface));
    transform: translateY(-1px);
}

.session-stage-four-letter.is-correct,
.session-stage-four-letter.is-hinted {
    border-style: solid;
    border-color: color-mix(in srgb, var(--accent) 56%, var(--line));
    background: color-mix(in srgb, var(--accent) 14%, var(--surface));
    color: var(--accent-strong);
}

.session-stage-four-letter.is-hinted {
    box-shadow: inset 0 -2px 0 color-mix(in srgb, var(--accent) 70%, transparent);
}

.session-stage-four-letter.is-wrong,
.session-stage-four-letter.is-extra {
    border-style: solid;
    border-color: rgba(255, 116, 107, 0.42);
    background: rgba(255, 116, 107, 0.1);
    color: var(--danger);
}

.session-stage-four-letter.is-separator {
    min-width: 14px;
    padding-inline: 0;
    border-color: transparent;
    background: transparent;
}

.session-stage-four-note {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.button.is-compact {
    min-height: 40px;
    padding: 10px 14px;
}

.section-label.is-hidden {
    display: none;
}

.selection-sidebar,
.selection-main,
.selection-summary-panel {
    min-height: 0;
}

.selection-sidebar,
.selection-summary-panel {
    border: 1px solid var(--line);
    border-radius: 16px;
    background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.selection-sidebar {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    padding: 10px;
    gap: 10px;
}

.selection-search input {
    width: 100%;
    min-height: 44px;
    padding: 10px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    color: var(--ink);
}

.selection-categories,
.theme-stack,
.selection-chips {
    overflow: auto;
}

.selection-categories {
    overflow-x: hidden;
    padding-top: 4px;
    padding-right: 2px;
}

.selection-categories,
.theme-stack {
    display: grid;
    gap: 10px;
    align-content: start;
    grid-auto-rows: max-content;
}

.category-card {
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
    padding: 16px 10px 12px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 90%, transparent);
    color: var(--ink);
    text-align: left;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.category-card:hover:not(:disabled),
.category-card.is-active {
    transform: translateY(-1px);
    border-color: var(--accent);
    background: color-mix(in srgb, var(--surface) 76%, var(--accent) 24%);
}

.category-card:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.archive-category-card {
    width: 100%;
    align-self: start;
}

#archive-categories {
    align-content: start;
    grid-auto-rows: max-content;
}

.category-badge,
.theme-chip,
.selection-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border-radius: 999px;
    font-weight: 800;
}

.category-badge {
    min-height: 26px;
    max-width: 100%;
    padding: 3px 8px;
    font-size: 0.7rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    border: 1px solid var(--line);
}

.category-badge.is-open {
    background: rgba(85, 201, 132, 0.14);
    color: var(--success);
}

.category-badge.is-exam {
    background: rgba(247, 184, 75, 0.14);
    color: var(--warning);
}

.category-badge.is-locked {
    background: rgba(255, 116, 107, 0.12);
    color: var(--danger);
}

.selection-main {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 10px;
}

.selection-main-actions {
    display: flex;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    gap: 8px;
}

.selection-main-header>div {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    min-width: 0;
}

.selection-mobile-back,
.selection-mobile-fab {
    display: none;
}

.theme-card {
    padding: 12px;
}

.category-card-top {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: start;
    gap: 8px;
}

.category-card-top strong {
    display: block;
    min-width: 0;
    font-size: 0.98rem;
    line-height: 1.22;
    overflow-wrap: anywhere;
}

.category-card-top .category-badge {
    margin-top: 1px;
}

.category-card-meta,
.category-card-progress {
    font-size: 0.92rem;
    line-height: 1.35;
}

.selection-category-exam-btn {
    width: 100%;
    margin-top: 6px;
    padding: 6px 10px;
    min-height: 42px;
    font-size: 0.86rem;
    justify-content: center;
}

.theme-card-header {
    align-items: flex-start;
    gap: 10px;
}

.theme-card-header>div {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
    min-width: 0;
}

.theme-chip {
    min-height: 32px;
    min-width: 32px;
    justify-content: center;
    padding: 4px 9px;
    background: color-mix(in srgb, var(--surface-soft) 70%, var(--surface) 30%);
    color: var(--muted);
}

.word-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(138px, 1fr));
    gap: 8px;
    margin-top: 12px;
}

.word-card {
    display: block;
    min-height: 0;
    padding: 8px 10px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface) 90%, transparent);
    color: var(--ink);
    text-align: left;
    cursor: pointer;
    transition: transform 0.16s ease, border-color 0.16s ease, background-color 0.16s ease;
}

.word-card-line {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.word-card:hover {
    transform: translateY(-1px);
    border-color: var(--accent);
}

.word-card.is-selected {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--surface) 72%, var(--accent) 28%);
}

.word-card.is-locked {
    cursor: not-allowed;
    border-style: dashed;
    opacity: 0.4;
}

.word-card.is-srs {
    border-color: rgba(255, 116, 107, 0.6);
    background: color-mix(in srgb, var(--surface) 85%, var(--danger) 15%);
}

.word-card.is-srs:hover {
    border-color: var(--danger);
}

.word-card.is-archived-word {
    border-color: rgba(241, 196, 15, 0.36);
    background: color-mix(in srgb, var(--surface) 90%, #f1c40f 10%);
}

.word-card.is-archived-selected,
.selection-chip.is-archived {
    border-color: #d4a017;
    background: color-mix(in srgb, var(--surface) 68%, #ffd76a 32%);
    box-shadow: 0 0 0 1px rgba(212, 160, 23, 0.2), 0 0 16px rgba(255, 215, 0, 0.24);
}

.word-card.is-rating-word {
    border-color: rgba(220, 53, 69, 0.36);
    background: color-mix(in srgb, var(--surface) 90%, rgba(220, 53, 69, 0.1) 10%);
}

.word-card.is-rating-selected,
.selection-chip.is-rating {
    border-color: rgba(220, 53, 69, 0.8);
    background: color-mix(in srgb, var(--surface) 68%, rgba(255, 99, 132, 0.32) 32%);
    box-shadow: 0 0 0 1px rgba(220, 53, 69, 0.18), 0 0 16px rgba(220, 53, 69, 0.18);
}

.info-tooltip-container:hover .info-tooltip-content {
    display: block !important;
}

.rating-level-tabs .tab {
    background: transparent;
    border: none;
    color: var(--muted);
    font-weight: 500;
    transition: all 0.2s;
}

.rating-level-tabs .tab.is-active {
    background: var(--bg);
    color: var(--text);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.anti-rating-shell {
    width: min(760px, 100%);
}

.anti-rating-grid {
    grid-template-columns: minmax(0, 1fr);
}

.anti-rating-main {
    border: 1px solid var(--line);
    border-radius: 20px;
    background:
        radial-gradient(circle at top right, rgba(220, 53, 69, 0.08), transparent 32%),
        color-mix(in srgb, var(--surface) 90%, transparent);
    padding: 18px;
}

.anti-rating-layout {
    display: grid;
    gap: 14px;
    max-width: 100%;
}

.anti-rating-podium,
.anti-rating-list {
    display: grid;
    gap: 10px;
}

.anti-rating-card {
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr) auto;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 13px 14px;
    border: 1px solid color-mix(in srgb, rgba(220, 53, 69, 0.28) 85%, var(--line));
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface) 94%, rgba(220, 53, 69, 0.06) 6%);
    color: var(--ink);
    text-align: left;
    transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease, background-color 0.16s ease;
}

.anti-rating-card:hover {
    transform: translateY(-1px);
    border-color: rgba(220, 53, 69, 0.52);
    box-shadow: 0 14px 32px rgba(220, 53, 69, 0.08);
}

.anti-rating-card.is-selected,
.anti-rating-card.is-rating-selected {
    border-color: rgba(220, 53, 69, 0.82);
    background: color-mix(in srgb, var(--surface) 76%, rgba(255, 99, 132, 0.24) 24%);
    box-shadow: 0 0 0 1px rgba(220, 53, 69, 0.14), 0 16px 34px rgba(220, 53, 69, 0.12);
}

.anti-rating-card.is-archived-selected {
    border-color: #d4a017;
    background: color-mix(in srgb, var(--surface) 78%, #ffd76a 22%);
}

.anti-rating-rank {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: color-mix(in srgb, var(--accent) 10%, var(--surface));
    color: var(--accent-strong);
    font-size: 1rem;
    font-weight: 900;
}

.anti-rating-card.is-rank-1 .anti-rating-rank {
    background: linear-gradient(180deg, #f8d56a 0%, #d9a21f 100%);
    color: #5a3c00;
}

.anti-rating-card.is-rank-2 .anti-rating-rank {
    background: linear-gradient(180deg, #dde4ef 0%, #aab6c8 100%);
    color: #324055;
}

.anti-rating-card.is-rank-3 .anti-rating-rank {
    background: linear-gradient(180deg, #efc9ab 0%, #bf8352 100%);
    color: #4f2e12;
}

.anti-rating-copy {
    display: grid;
    gap: 4px;
    min-width: 0;
}

.anti-rating-word {
    font-size: 1.1rem;
    line-height: 1.1;
}

.anti-rating-translation,
.anti-rating-date {
    color: var(--muted);
    font-size: 0.9rem;
}

.anti-rating-stats {
    display: grid;
    justify-items: end;
    gap: 8px;
}

.anti-rating-count {
    color: var(--danger);
    font-size: 0.92rem;
    font-weight: 800;
}

.anti-rating-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 92px;
    min-height: 36px;
    padding: 0 12px;
    border-radius: 12px;
    border: 1px solid rgba(220, 53, 69, 0.3);
    color: #fff;
    background: linear-gradient(180deg, #ff6f7f 0%, #df4258 100%);
    font-size: 0.84rem;
    font-weight: 900;
    box-shadow: 0 10px 20px rgba(220, 53, 69, 0.18);
}

.word-card.is-known-mode {
    border-style: dashed;
    border-color: rgba(255, 116, 107, 0.48);
    background: color-mix(in srgb, var(--surface) 92%, rgba(255, 116, 107, 0.08) 8%);
}

.word-code,
.word-check {
    color: var(--muted);
    font-size: 0.74rem;
    font-weight: 800;
    flex: 0 0 auto;
}

.word-title {
    overflow: hidden;
    flex: 1 1 auto;
    min-width: 0;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 0.92rem;
    line-height: 1.1;
}

.word-card.is-selected .word-check {
    color: var(--accent-strong);
}

.word-check.is-known-remove {
    color: var(--danger);
    font-size: 1rem;
    font-weight: 900;
}

.word-card-subtle {
    display: block;
    margin-top: 6px;
    color: var(--muted);
    font-size: 0.75rem;
    line-height: 1.25;
}

.archive-phrase-audit {
    display: grid;
    gap: 8px;
    margin-top: 2px;
}

.archive-phrase-audit-summary {
    display: grid;
    gap: 6px;
    min-width: 0;
}

.archive-phrase-audit-summary-top {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.archive-phrase-audit-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    min-width: 0;
    flex: 1 1 280px;
}

.archive-phrase-audit-badge,
.archive-phrase-audit-subtle {
    display: inline-flex;
    align-items: center;
    min-height: 28px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.82rem;
    font-weight: 700;
}

.archive-phrase-audit-badge {
    background: color-mix(in srgb, var(--surface) 66%, var(--accent) 34%);
    color: var(--accent-strong);
    border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--line));
}

.archive-phrase-audit-subtle {
    background: color-mix(in srgb, var(--surface-soft) 74%, transparent);
    color: var(--muted);
    border: 1px solid var(--line);
}

.archive-phrase-audit-subtle.is-warning {
    color: #a76515;
    background: color-mix(in srgb, #ffd9a3 54%, var(--surface) 46%);
    border-color: color-mix(in srgb, #d89f33 36%, var(--line));
}

.archive-phrase-audit-toggle {
    min-width: 132px;
    flex: 0 0 auto;
}

.archive-phrase-audit-progress {
    position: relative;
    height: 8px;
    border-radius: 999px;
    overflow: hidden;
    background: rgba(33, 95, 198, 0.10);
    border: 1px solid rgba(33, 95, 198, 0.14);
}

.archive-phrase-audit-progress-bar {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, rgba(33, 95, 198, 0.88), rgba(32, 173, 137, 0.88));
}

.archive-phrase-audit-panel {
    display: grid;
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: color-mix(in srgb, var(--surface) 94%, transparent);
}

.archive-phrase-audit-note {
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
    line-height: 1.45;
}

.archive-phrase-audit-list {
    display: grid;
    gap: 10px;
}

.archive-phrase-audit-row {
    display: grid;
    gap: 6px;
    padding: 10px 12px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.archive-phrase-audit-row.is-hidden-from-trainer {
    border-style: dashed;
    background: color-mix(in srgb, #fff3db 52%, var(--surface) 48%);
}

.archive-phrase-audit-row-head,
.archive-phrase-audit-row-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    flex-wrap: wrap;
}

.archive-phrase-audit-row-status {
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 800;
    border: 1px solid var(--line);
}

.archive-phrase-audit-row-status.is-ready {
    color: var(--success);
    background: rgba(85, 201, 132, 0.12);
}

.archive-phrase-audit-row-status.is-hidden {
    color: #a76515;
    background: rgba(216, 159, 51, 0.14);
}

.archive-phrase-audit-row-text {
    display: grid;
    gap: 4px;
    color: var(--ink);
    font-size: 0.95rem;
    line-height: 1.45;
}

.archive-phrase-audit-row-meta {
    color: var(--muted);
    font-size: 0.84rem;
    line-height: 1.4;
}

.selection-summary-panel {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto auto;
    gap: 8px;
    padding: 10px 10px 20px;
}

.selection-summary-title {
    margin: 0;
    cursor: help;
    font-size: 0.74rem;
    line-height: 1.15;
}

.batch-size-switch {
    display: inline-flex;
    align-items: center;
    flex-wrap: nowrap;
    gap: 4px;
    padding: 4px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.batch-size-btn {
    min-width: 32px;
    min-height: 32px;
    padding: 4px 6px;
    border: 1px solid transparent;
    border-radius: 10px;
    background: transparent;
    color: var(--muted);
    font-size: 0.92rem;
    font-weight: 900;
    cursor: pointer;
    transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.batch-size-btn.is-active {
    border-color: var(--accent);
    background: color-mix(in srgb, var(--surface) 70%, var(--accent) 30%);
    color: var(--ink);
}

.action-row {
    align-items: center;
}

.selection-bottom-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.selection-known-mode-standalone {
    min-width: 74px;
    min-height: 40px;
    padding: 6px 12px;
    font-size: 0.95rem;
    white-space: nowrap;
}

.selection-known-mode-standalone.is-active-known {
    border-color: rgba(220, 53, 69, 0.55);
    background: color-mix(in srgb, var(--surface) 62%, rgba(220, 53, 69, 0.38) 38%);
    color: #8b1e2b;
}

.selection-summary-panel .action-row {
    margin-top: 0;
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    align-items: stretch;
}

.selection-summary-panel .action-row .button {
    min-width: 0;
}

.selection-actions-inline {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 8px;
    width: 100%;
}

.selection-actions-inline .button {
    min-width: 0;
    min-height: 40px;
    padding: 8px 10px;
    font-size: 0.92rem;
}

.srs-selection-shell {
    width: min(1760px, 100%);
}

.srs-selection-summary {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.srs-selection-grid {
    grid-template-columns: 240px minmax(0, 1fr) 360px;
}

.srs-selection-main {
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface) 84%, transparent);
}

.selection-main-with-surface {
    padding: 14px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface) 84%, transparent);
}

.srs-selection-themes {
    min-height: 0;
    padding-right: 4px;
    align-content: start;
    grid-auto-rows: max-content;
}

.srs-selection-summary-panel {
    grid-template-rows: auto auto minmax(0, 1fr) auto;
}

.srs-selection-summary-panel .selection-summary-text {
    display: none;
}

.srs-selection-current-box {
    min-height: 0;
    height: 100%;
}

.srs-selection-chips {
    min-height: 220px;
    align-content: flex-start;
    padding: 12px;
    border: 1px solid color-mix(in srgb, var(--line) 94%, transparent);
    border-radius: 18px;
    background: color-mix(in srgb, var(--surface) 97%, transparent);
}

.srs-selection-empty-block {
    display: grid;
    align-content: start;
    gap: 8px;
    min-height: 100%;
}

.srs-selection-empty-title {
    margin: 0;
    color: var(--ink);
    font-weight: 800;
}

.srs-selection-empty-note {
    margin: 0;
    color: var(--muted);
    line-height: 1.5;
}

.selection-chips {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 6px;
    min-height: 0;
    height: 100%;
    overflow-y: auto;
    padding: 7px;
    padding-right: 6px;
    border: 1px solid color-mix(in srgb, var(--line) 92%, transparent);
    border-radius: 16px;
    background: color-mix(in srgb, var(--surface) 96%, transparent);
}

.selection-summary-panel .info-row {
    padding: 6px 0;
}

.selection-chip {
    padding: 7px 11px;
    border: 1px solid var(--line);
    background: color-mix(in srgb, var(--surface) 86%, transparent);
    color: var(--ink);
    cursor: pointer;
}

.selection-chip.is-locked {
    cursor: not-allowed;
    border-style: dashed;
    opacity: 0.82;
}

.selection-summary-stats {
    display: grid;
    gap: 0;
}

.selection-empty.compact {
    padding: 10px 0;
}

@media (max-width: 900px) {

    .app-grid,
    .hero-panel,
    .content-grid,
    .selection-grid,
    .session-body,
    .session-progress {
        grid-template-columns: 1fr;
    }

    .selection-grid {
        gap: 12px;
    }

    .selection-sidebar,
    .selection-main,
    .selection-summary-panel {
        min-height: auto;
    }

    .selection-sidebar {
        order: 1;
    }

    .selection-main {
        order: 2;
    }

    .selection-summary-panel {
        order: 3;
    }

    .selection-categories {
        max-height: 260px;
    }

    .theme-stack {
        overflow: visible;
    }

    .level-list {
        grid-template-columns: repeat(3, 1fr);
    }

    .selection-summary {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .app-shell {
        box-sizing: border-box;
        width: 100%;
        max-width: none;
        margin: 0;
        overflow-x: hidden;
        padding: 12px;
        padding-bottom: calc(12px + env(safe-area-inset-bottom));
    }

    .app-header {
        position: relative;
        z-index: 2000;
        display: flex;
        flex-wrap: nowrap;
        align-items: center;
        width: 100%;
        max-width: 100%;
        min-width: 0;
        gap: 0;
        padding: 8px 10px;
        border-radius: 18px;
        box-shadow: 0 10px 24px rgba(23, 32, 51, 0.08);
    }

    .app-grid,
    .workspace,
    .hero-panel,
    .panel {
        width: 100%;
        max-width: 100%;
        min-width: 0;
    }

    .hero-panel {
        justify-content: stretch;
        overflow: hidden;
    }

    .hero-panel>div,
    .hero-panel .level-info,
    .hero-panel #main-training-actions,
    .hero-panel .deep-training-main-actions,
    .hero-panel .deep-srs-actions,
    .hero-panel .stat-box,
    .hero-panel .button {
        min-width: 0;
        max-width: 100%;
    }

    .hero-panel>div:first-child {
        width: 100%;
        padding-right: 0 !important;
    }

    .hero-panel>div:first-child>div:first-child,
    .hero-panel .deep-training-main-actions,
    .hero-panel .deep-srs-actions {
        width: 100%;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-panel .level-info {
        width: 100%;
        overflow: hidden;
    }

    .hero-panel #main-training-actions {
        width: 100%;
        overflow: hidden;
    }

    .hero-panel .button {
        width: 100%;
    }

    .hero-panel .deep-srs-actions {
        display: flex;
        align-items: stretch;
        gap: 8px;
        grid-template-columns: none;
    }

    .hero-panel .deep-srs-button {
        flex: 1 1 auto;
        width: auto;
        min-width: 0;
        font-size: clamp(0.74rem, 2.6vw, 0.84rem);
        padding-left: 14px;
        padding-right: 52px;
    }

    .hero-panel .deep-srs-settings-button {
        flex: 0 0 64px;
        width: 64px;
        min-width: 64px;
        max-width: 64px;
        padding: 0;
    }

    .header-left,
    .header-user,
    .mobile-toolbar-secondary {
        display: contents;
        width: auto;
        flex-wrap: nowrap;
        gap: 0;
    }

    .header-left .header-btn [data-deep-i18n="backToMenu"],
    .header-left .header-btn [data-deep-i18n="pairLabel"],
    .header-left .header-btn [data-deep-i18n="settingsBtn"],
    .header-left .header-btn [data-deep-i18n="levelsTitle"] {
        display: none;
    }

    .header-left .header-btn,
    .settings-menu,
    .settings-menu>.header-btn {
        width: auto;
        min-width: 0;
        padding: 0;
        margin-left: 0 !important;
    }

    .settings-menu {
        position: static;
    }

    .header-left .header-btn {
        justify-content: center;
        min-height: 38px;
        padding: 6px 8px;
        border-radius: 11px;
        font-size: 0.88rem;
        box-shadow: 0 4px 10px rgba(23, 32, 51, 0.04);
    }

    .pair-header-btn strong,
    #nav-active-level-name {
        min-width: 0;
        margin-left: 0 !important;
        text-align: center;
        font-size: clamp(0.86rem, 3.4vw, 1rem);
        line-height: 1.05;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .header-left .header-btn>.header-home-fallback,
    .header-left .header-btn>span[aria-hidden="true"] {
        font-size: 0.95rem;
        line-height: 1;
    }

    .settings-popover {
        position: absolute;
        left: auto;
        right: 0;
        top: calc(100% + 10px);
        z-index: 20002;
        width: min(360px, calc(100vw - 32px));
        max-width: none;
        max-height: calc(100vh - 108px);
        overflow: auto;
        transform: none;
    }

    .settings-popover .settings-row--language {
        order: 3;
    }

    .settings-row--language {
        align-items: center;
        flex-direction: row;
        gap: 10px;
    }

    .settings-row--language .settings-label {
        flex: 0 0 auto;
    }

    .settings-row--language .interface-lang-switcher {
        flex: 1 1 auto;
        justify-content: flex-end;
        max-width: 166px;
        margin-left: auto;
        padding: 2px;
        gap: 2px;
        border-radius: 16px;
    }

    .settings-row--language .lang-switch-btn {
        min-width: 0;
        min-height: 28px;
        padding: 0 10px;
        border-radius: 12px;
        font-size: 0.72rem;
    }

    .user-card {
        flex: 1 1 auto;
        max-width: none;
        min-width: 0;
        min-height: 40px;
        padding: 6px 8px;
        border-radius: 12px;
        box-shadow: 0 4px 10px rgba(23, 32, 51, 0.04);
    }

    .user-avatar {
        width: 28px;
        height: 28px;
        border-radius: 9px;
        font-size: 0.72rem;
    }

    .user-meta strong {
        font-size: 0.9rem;
    }

    .power-button {
        width: 40px;
        height: 40px;
        border-radius: 12px;
        box-shadow: 0 6px 14px rgba(232, 62, 76, 0.2);
    }

    .power-button svg {
        width: 20px;
        height: 20px;
    }

    .header-home-link {
        order: 1;
        margin-right: auto;
        width: 40px !important;
        flex: 0 0 40px;
        min-width: 40px !important;
        min-height: 40px !important;
        padding: 0 !important;
        border-radius: 12px;
    }

    .header-home-link>.header-home-fallback,
    .header-home-link>span[data-deep-i18n="backToMenu"] {
        display: none !important;
    }

    .header-home-link .header-home-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 18px;
        height: 18px;
        color: #22c55e;
    }

    .header-home-link .header-home-icon svg {
        width: 18px;
        height: 18px;
        display: block;
    }

    .mobile-toolbar-settings {
        order: 4;
        flex: 0 0 auto;
    }

    .mobile-toolbar-user {
        order: 5;
        flex: 0 1 auto;
        max-width: calc(100% - 144px);
    }

    .mobile-toolbar-power {
        order: 6;
        flex: 0 0 auto;
    }

    .mobile-toolbar-pair {
        flex: 0 1 auto;
        justify-content: center;
        width: auto;
        min-width: 0;
        padding-left: 14px;
        padding-right: 14px;
    }

    .mobile-toolbar-level,
    .header-left>button[data-action="open-level-modal"] {
        flex: 0 1 auto;
        justify-content: center;
        gap: 6px;
        width: auto;
        min-width: 0;
        padding-left: 14px;
        padding-right: 14px;
    }

    .mobile-toolbar-secondary {
        order: 2;
        flex: 1 1 auto;
        display: flex;
        justify-content: center;
        align-items: center;
        gap: 8px;
        min-width: 0;
        margin-top: 0;
    }

    .mobile-toolbar-level [data-deep-i18n="levelsTitle"],
    .header-left>button[data-action="open-level-modal"] [data-deep-i18n="levelsTitle"] {
        display: none !important;
    }

    .mobile-toolbar-level #nav-active-level-name,
    .header-left>button[data-action="open-level-modal"] #nav-active-level-name {
        text-align: center;
    }

    .selection-modal,
    .session-modal {
        align-items: flex-start;
        padding: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .selection-shell,
    .session-shell {
        width: 100%;
        min-height: 100vh;
        max-height: none;
        padding: 14px;
        border: 0;
        border-radius: 0;
        overflow: auto;
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .top-actions {
        width: 100%;
        justify-content: flex-start;
    }

    .level-list {
        grid-template-columns: 1fr;
    }

    .action-row,
    .button {
        width: 100%;
    }

    .settings-row .button {
        width: auto;
    }

    .selection-main-actions .button,
    .selection-close,
    .exam-close-home {
        width: auto;
    }

    .selection-sidebar,
    .selection-summary-panel,
    .theme-card {
        padding: 10px;
    }

    .selection-main-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .exam-header {
        gap: 12px;
        margin-bottom: 16px;
    }

    .exam-title-category {
        font-size: 0.92rem;
    }

    .selection-main-actions {
        width: 100%;
    }

    .selection-main-actions .button {
        flex: 1 1 0;
    }

    .selection-summary-panel {
        grid-template-rows: auto auto auto auto auto;
        padding-bottom: 14px;
    }

    .selection-summary-title {
        font-size: 0.74rem;
    }

    .session-card,
    .session-side {
        padding: 14px;
    }

    .session-options {
        grid-template-columns: 1fr;
    }

    .selection-summary-text {
        font-size: 0.95rem;
    }

    .category-card {
        padding: 12px 10px 10px;
    }

    .category-card-top strong {
        font-size: 0.92rem;
        line-height: 1.2;
    }

    .category-badge {
        min-height: 24px;
        padding: 3px 7px;
        font-size: 0.66rem;
    }

    .selection-category-exam-btn {
        margin-top: 4px;
        min-height: 40px;
        font-size: 0.82rem;
    }

    .selection-bottom-controls {
        display: flex;
        justify-content: center;
    }

    .selection-actions-inline .button {
        min-height: 38px;
        font-size: 0.88rem;
    }

    .selection-chips {
        max-height: 180px;
    }

    .word-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 600px) {
    .app-header {
        gap: 4px;
        flex-wrap: nowrap;
        align-items: center;
    }

    .header-home-link {
        order: 1;
        margin-right: 0;
    }

    .mobile-toolbar-secondary {
        order: 2;
        flex: 1 1 auto;
        gap: 4px;
        margin-top: 0;
        justify-content: center;
    }

    .mobile-toolbar-pair {
        order: 1;
        padding-left: 8px;
        padding-right: 8px;
    }

    .mobile-toolbar-level,
    .header-left>button[data-action="open-level-modal"] {
        order: 2;
        padding-left: 8px;
        padding-right: 8px;
    }

    .mobile-toolbar-level [data-deep-i18n="levelsTitle"],
    .header-left>button[data-action="open-level-modal"] [data-deep-i18n="levelsTitle"] {
        display: none !important;
    }

    .mobile-toolbar-settings {
        order: 4;
    }

    .mobile-toolbar-user {
        order: 5;
        flex: 0 0 auto;
        max-width: none;
        min-height: 38px;
    }

    .mobile-toolbar-power {
        order: 6;
    }

    .user-card {
        width: 38px;
        min-width: 38px;
        min-height: 38px;
        padding: 4px;
        justify-content: center;
    }

    .user-meta {
        display: none;
    }
}

@media (max-width: 480px) {
    .app-header {
        padding: 8px;
        gap: 4px;
        flex-wrap: nowrap;
        align-items: center;
    }

    .header-left .header-btn {
        min-height: 34px;
        padding: 5px 6px;
        border-radius: 10px;
        font-size: 0.8rem;
    }

    .pair-header-btn strong,
    #nav-active-level-name {
        font-size: 0.8rem;
    }

    .header-home-link {
        width: 36px !important;
        flex-basis: 36px;
        min-width: 36px !important;
        min-height: 36px !important;
    }

    .mobile-toolbar-secondary .header-btn {
        min-height: 32px;
        padding-left: 8px;
        padding-right: 8px;
        font-size: 0.76rem;
    }

    .mobile-toolbar-level [data-deep-i18n="levelsTitle"],
    .header-left>button[data-action="open-level-modal"] [data-deep-i18n="levelsTitle"] {
        display: none !important;
    }

    .hero-panel {
        padding: 14px;
    }

    .hero-panel>div:first-child {
        gap: 12px !important;
    }

    .hero-panel>div:first-child>div:first-child {
        grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
        gap: 8px !important;
    }

    .hero-panel>div:first-child>div:first-child .stat-box,
    .hero-panel .stats-strip .stat-box {
        padding: 8px;
    }

    .hero-panel>div:first-child>div:first-child .stat-box {
        min-height: 80px;
    }

    .hero-panel [data-action="sync-placeholder"],
    .hero-panel [data-action="open-setup-modal"] {
        font-size: clamp(0.68rem, 2.6vw, 0.8rem) !important;
        line-height: 1.12;
        padding: 6px 4px;
    }

    .hero-panel .stats-strip {
        grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
        gap: 8px;
    }

    .hero-panel .stats-strip .stat-value {
        font-size: clamp(0.98rem, 4.1vw, 1.18rem);
    }

    .hero-panel .stats-strip .stat-label,
    .hero-panel #stat-srs-percent {
        font-size: 0.72rem !important;
    }

    .hero-panel .deep-queue-button {
        font-size: clamp(0.72rem, 3vw, 0.86rem);
        padding-left: 12px;
        padding-right: 44px;
    }

    .hero-panel .deep-queue-button__badge {
        right: 10px;
        min-width: 22px;
        height: 22px;
        font-size: 0.78rem;
    }

    .power-button {
        width: 38px;
        height: 38px;
    }

    .settings-row--language .interface-lang-switcher {
        max-width: 150px;
    }

    .selection-summary {
        grid-template-columns: 1fr;
    }

    .session-progress {
        grid-template-columns: 1fr;
    }

    .selection-header,
    .selection-main-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .selection-shell {
        gap: 12px;
    }

    .selection-summary {
        gap: 10px;
    }

    .selection-pill {
        min-height: 0;
        padding: 10px 12px;
    }

    .selection-sidebar,
    .selection-summary-panel {
        border-radius: 14px;
    }

    .selection-categories {
        max-height: 220px;
        padding-right: 0;
    }

    .selection-main-header>div,
    .theme-card-header>div {
        gap: 6px;
        flex-direction: column;
        align-items: flex-start;
    }

    .selection-summary-panel .action-row .button {
        width: 100%;
    }

    .selection-bottom-controls {
        display: flex;
        justify-content: center;
        gap: 8px;
        width: 100%;
    }

    .selection-actions-inline {
        display: grid;
        grid-template-columns: 1fr 1fr;
        width: 100%;
    }

    .selection-summary-panel .action-row {
        display: grid;
        grid-template-columns: 1fr;
    }

    .word-grid {
        grid-template-columns: 1fr;
    }

    .selection-categories {
        max-height: 220px;
    }

    .selection-close {
        width: 100%;
    }

    .brand-mark {
        width: 40px;
        height: 40px;
    }

    .hero-panel,
    .module-panel,
    .pair-dialog {
        padding: 16px;
    }

    .info-row {
        flex-direction: column;
        gap: 3px;
    }

    .pair-queued-badge {
        font-size: 10px !important;
        padding: 1px 4px !important;
    }

    .pair-option__right {
        gap: 6px !important;
        flex-shrink: 0;
    }

    .pair-option {
        padding: 10px 10px !important;
        gap: 4px;
    }

    .pair-option__route {
        flex-shrink: 1;
        min-width: 0;
    }

    .pair-download-btn {
        font-size: 11px !important;
        padding: 3px 8px !important;
    }
}

@media (max-width: 1100px) {

    .mobile-toolbar-settings [data-deep-i18n="settingsBtn"],
    .header-left .header-btn[data-action="toggle-settings"] [data-deep-i18n="settingsBtn"] {
        display: none !important;
    }
}

@media (max-width: 950px) {

    .mobile-toolbar-level [data-deep-i18n="levelLabel"],
    .mobile-toolbar-level [data-deep-i18n="levelsTitle"],
    .mobile-toolbar-pair [data-deep-i18n="pairLabel"],
    .header-left .header-btn [data-deep-i18n="pairLabel"] {
        display: none !important;
    }
}

.boot-sync-log {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
    min-height: 100px;
}

.boot-sync-log-item {
    font-size: 0.9rem;
    color: var(--text-color, #333);
    opacity: 0;
    animation: fadeInSlideUp 0.4s ease forwards;
    display: flex;
    align-items: center;
    gap: 8px;
    text-align: left;
}

.boot-sync-log-item::before {
    content: '';
    display: block;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top-color: #4caf50;
    border-right-color: #4caf50;
    border-radius: 50%;
    animation: boot-sync-spin 0.8s linear infinite;
    flex-shrink: 0;
}

.boot-sync-log-item.done::before {
    border: none;
    border-radius: 0;
    animation: none;
    width: 6px;
    height: 10px;
    border-right: 2px solid #4caf50;
    border-bottom: 2px solid #4caf50;
    transform: rotate(45deg);
    margin-left: 5px;
    margin-right: 5px;
}

@keyframes fadeInSlideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.boot-sync-progress-track {
    width: 100%;
    height: 8px;
    background: var(--border-color, #e0e0e0);
    border-radius: 4px;
    overflow: hidden;
}

.boot-sync-progress-fill {
    width: 0%;
    height: 100%;
    background: #4caf50;
    transition: width 0.4s ease-out;
}

.boot-sync-finish {
    display: none;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color, #eee);
    font-weight: 600;
    color: #4caf50;
    text-align: center;
    font-size: 1rem;
    animation: fadeInSlideUp 0.5s ease;
}

[data-theme="dark"] .boot-sync-log-item {
    color: #ddd;
}

[data-theme="dark"] .boot-sync-finish {
    color: #81c784;
}