:root {
    color-scheme: light;
    --bg: #f3f5f8;
    --surface: rgba(255, 255, 255, 0.9);
    --surface-strong: #ffffff;
    --surface-muted: #e9edf3;
    --text: #172033;
    --muted: #647087;
    --line: rgba(23, 32, 51, 0.11);
    --primary: #4e5bd5;
    --primary-strong: #303cac;
    --accent: #dbe0ff;
    --accent-2: #d9f7ed;
    --success: #16805c;
    --danger: #bd3f4c;
    --warning: #9b6410;
    --shadow: 0 18px 60px rgba(30, 42, 73, 0.09);
    --radius-lg: 28px;
    --radius-md: 19px;
    --radius-sm: 12px;
    --page: 1240px;
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #10131b;
    --surface: rgba(27, 32, 44, 0.92);
    --surface-strong: #1c2230;
    --surface-muted: #252c3b;
    --text: #f1f4fa;
    --muted: #aab4c6;
    --line: rgba(255, 255, 255, 0.1);
    --primary: #9aa4ff;
    --primary-strong: #bec4ff;
    --accent: #282e5d;
    --accent-2: #173e36;
    --success: #62d6ae;
    --danger: #ff9da7;
    --warning: #ffd18a;
    --shadow: 0 20px 70px rgba(0, 0, 0, 0.22);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    overflow-x: hidden;
    color: var(--text);
    background:
        radial-gradient(circle at 12% 0%, color-mix(in srgb, var(--accent) 70%, transparent), transparent 28rem),
        radial-gradient(circle at 100% 30%, color-mix(in srgb, var(--accent-2) 55%, transparent), transparent 32rem),
        var(--bg);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    line-height: 1.55;
}

button,
input,
textarea,
select {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

a {
    color: inherit;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 18ch;
    margin-bottom: 0.7rem;
    font-size: clamp(2rem, 5vw, 4.5rem);
    line-height: 0.98;
    letter-spacing: -0.055em;
    overflow-wrap: anywhere;
}

h2 {
    margin-bottom: 0.55rem;
    font-size: clamp(1.2rem, 2vw, 1.65rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
    overflow-wrap: anywhere;
}

p {
    color: var(--muted);
}

.skip-link {
    position: fixed;
    z-index: 100;
    top: 0.5rem;
    left: 0.5rem;
    padding: 0.7rem 1rem;
    border-radius: var(--radius-sm);
    background: var(--surface-strong);
    transform: translateY(-150%);
}

.skip-link:focus {
    transform: translateY(0);
}

.site-header {
    position: sticky;
    z-index: 20;
    top: 0;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    width: min(calc(100% - 2rem), var(--page));
    margin: 0 auto;
    padding: 1rem 0;
    backdrop-filter: blur(18px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.7rem;
    color: var(--text);
    font-weight: 800;
    text-decoration: none;
    letter-spacing: -0.02em;
}

.brand-mark {
    display: grid;
    width: 2.3rem;
    height: 2.3rem;
    place-items: center;
    border-radius: 0.75rem;
    color: white;
    background: linear-gradient(145deg, var(--primary), var(--primary-strong));
    box-shadow: var(--shadow);
}

.header-actions {
    display: flex;
    min-width: 0;
    align-items: center;
    justify-content: flex-end;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.nav-link,
.icon-button,
.button-link {
    border: 0;
    border-radius: 999px;
    padding: 0.62rem 0.88rem;
    color: var(--muted);
    background: transparent;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}

.nav-link:hover,
.icon-button:hover,
.nav-link:focus-visible,
.icon-button:focus-visible {
    color: var(--text);
    background: var(--surface);
    outline: none;
}

.nav-icon {
    display: none;
    font-size: 1.05rem;
    line-height: 1;
}

.compact-nav-action {
    gap: 0.35rem;
}

.inline-form {
    display: inline-flex;
    margin: 0;
}

.page-shell {
    width: min(calc(100% - 2rem), var(--page));
    min-height: calc(100vh - 12rem);
    margin: 1.5rem auto 4rem;
}

.site-footer {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    width: min(calc(100% - 2rem), var(--page));
    margin: 0 auto;
    padding: 1.5rem 0 2rem;
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.85rem;
}

.bento-card {
    position: relative;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: clamp(1.25rem, 3vw, 2rem);
    background: var(--surface);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
}

.accent-card {
    border-color: color-mix(in srgb, var(--primary) 18%, var(--line));
    background:
        linear-gradient(145deg, color-mix(in srgb, var(--accent) 72%, var(--surface)), var(--surface));
}

.accent-card::after {
    position: absolute;
    right: -5rem;
    bottom: -7rem;
    width: 18rem;
    height: 18rem;
    border-radius: 50%;
    background: color-mix(in srgb, var(--primary) 13%, transparent);
    content: "";
    pointer-events: none;
}

.eyebrow {
    margin-bottom: 0.75rem;
    color: var(--primary-strong);
    font-size: 0.72rem;
    font-weight: 850;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 2fr) repeat(2, minmax(10rem, 0.7fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.hero-card {
    grid-row: span 2;
    min-height: 18rem;
}

.hero-card p {
    max-width: 48rem;
    font-size: 1.05rem;
}

.stat-card {
    display: flex;
    min-height: 8.5rem;
    flex-direction: column;
    justify-content: flex-end;
}

.stat-value {
    display: block;
    color: var(--text);
    font-size: clamp(2rem, 4vw, 3.3rem);
    font-weight: 850;
    line-height: 1;
    letter-spacing: -0.06em;
}

.stat-label {
    color: var(--muted);
    font-size: 0.88rem;
    font-weight: 700;
}

.toolbar {
    display: flex;
    align-items: end;
    gap: 1rem;
    margin: 1rem 0;
    padding: 1rem;
    border-radius: var(--radius-md);
}

.toolbar-search {
    flex: 1;
}

.toolbar-filter {
    width: min(100%, 15rem);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.exercise-card {
    display: flex;
    min-height: 24rem;
    flex-direction: column;
    gap: 1.25rem;
    transition: transform 160ms ease, border-color 160ms ease;
}

.exercise-card[data-language-family="english"] {
    background: linear-gradient(145deg, color-mix(in srgb, #dbe7ff 54%, var(--surface)), var(--surface));
}

.exercise-card[data-language-family="latin"] {
    background: linear-gradient(145deg, color-mix(in srgb, #efe2cb 50%, var(--surface)), var(--surface));
}

.exercise-card[data-language-family="spanish"] {
    background: linear-gradient(145deg, color-mix(in srgb, #ffe5cf 50%, var(--surface)), var(--surface));
}

.exercise-card[data-language-family="french"] {
    background: linear-gradient(145deg, color-mix(in srgb, #e2e5ff 48%, var(--surface)), var(--surface));
}

.exercise-card[data-language-family="greek"] {
    background: linear-gradient(145deg, color-mix(in srgb, #dff3ff 48%, var(--surface)), var(--surface));
}

.exercise-card[data-language-family="german"] {
    background: linear-gradient(145deg, color-mix(in srgb, #e7f5ec 48%, var(--surface)), var(--surface));
}

.exercise-card:hover {
    border-color: color-mix(in srgb, var(--primary) 35%, var(--line));
    transform: translateY(-3px);
}

.exercise-card .primary-button,
.exercise-card .secondary-button {
    margin-top: auto;
}

.exercise-card-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    margin-top: auto;
    flex-wrap: wrap;
}

.exercise-card-actions .secondary-button {
    margin-top: 0;
}

.exercise-card-actions form {
    margin: 0;
}

.card-topline {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.7rem;
}

.pill,
.progress-badge {
    display: inline-flex;
    width: fit-content;
    align-items: center;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.3rem 0.62rem;
    color: var(--muted);
    background: var(--surface-muted);
    font-size: 0.72rem;
    font-weight: 800;
}

.pill-good,
.progress-badge[data-state="completed"] {
    color: var(--success);
    background: color-mix(in srgb, var(--success) 12%, var(--surface));
}

.progress-badge[data-state="started"],
.progress-badge[data-state="updated"] {
    color: var(--warning);
    background: color-mix(in srgb, var(--warning) 12%, var(--surface));
}

.meta-list {
    display: grid;
    gap: 0.65rem;
    margin: 0;
}

.meta-list div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    padding-bottom: 0.45rem;
}

.meta-list dt {
    color: var(--muted);
    font-size: 0.78rem;
    font-weight: 750;
}

.meta-list dd {
    margin: 0;
    text-align: right;
    font-size: 0.85rem;
    font-weight: 750;
}

.meta-list-horizontal {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.meta-list-horizontal div {
    min-width: 8rem;
    flex-direction: column;
    gap: 0.1rem;
    border: 0;
    border-radius: var(--radius-sm);
    padding: 0.75rem;
    background: color-mix(in srgb, var(--surface) 75%, transparent);
}

.meta-list-horizontal dd {
    text-align: left;
}

.primary-button,
.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: fit-content;
    min-height: 2.75rem;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0.68rem 1rem;
    font-weight: 800;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
}

.primary-button {
    color: white;
    background: var(--primary-strong);
    box-shadow: 0 10px 30px color-mix(in srgb, var(--primary) 28%, transparent);
}

.primary-button:hover,
.primary-button:focus-visible {
    background: var(--primary);
}

.secondary-button {
    color: var(--text);
    border-color: var(--line);
    background: var(--surface-muted);
}

.secondary-button:hover,
.secondary-button:focus-visible {
    border-color: color-mix(in srgb, var(--primary) 40%, var(--line));
    background: var(--surface-strong);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.auth-shell {
    display: grid;
    grid-template-columns: 1fr minmax(20rem, 1.1fr);
    gap: 1rem;
    max-width: 62rem;
    margin: clamp(2rem, 7vh, 6rem) auto;
}

.auth-shell-compact {
    max-width: 52rem;
}

.auth-card {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1rem;
}

.auth-card.accent-card {
    min-height: 25rem;
}

.field {
    display: grid;
    gap: 0.4rem;
}

.field label,
.choice-group legend {
    color: var(--text);
    font-size: 0.82rem;
    font-weight: 800;
}

.field input,
.field textarea,
.field select,
.toolbar input,
.toolbar select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 0.78rem 0.85rem;
    color: var(--text);
    background: var(--surface-strong);
    outline: none;
}

.field textarea {
    resize: vertical;
}

.field input:focus,
.field textarea:focus,
.field select:focus,
.toolbar input:focus,
.toolbar select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 14%, transparent);
}

.field-help,
.field-error {
    margin: 0;
    font-size: 0.76rem;
}

.workflow-warning {
    margin: 0;
    border-left: 3px solid var(--warning);
    padding: 0.65rem 0.75rem;
    color: var(--warning);
    background: color-mix(in srgb, var(--warning) 9%, var(--surface-strong));
    font-size: 0.78rem;
}

.field-error {
    color: var(--danger);
    font-weight: 750;
}

.choice-group {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
    border: 0;
    padding: 0;
}

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

.choice-group-compact .choice-card {
    padding: 0.6rem 0.7rem;
}

.choice-group legend {
    margin-bottom: 0.5rem;
}

.choice-card {
    display: flex;
    gap: 0.7rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 0.85rem;
    background: var(--surface-strong);
    cursor: pointer;
}

.choice-card span {
    display: grid;
    gap: 0.2rem;
}

.choice-card small {
    color: var(--muted);
}

.flash-stack {
    position: fixed;
    z-index: 50;
    top: 5rem;
    right: max(1rem, calc((100% - var(--page)) / 2));
    display: grid;
    width: min(24rem, calc(100% - 2rem));
    gap: 0.5rem;
}

.flash {
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 0.8rem 1rem;
    background: var(--surface-strong);
    box-shadow: var(--shadow);
    font-weight: 700;
    transition: opacity 180ms ease, transform 180ms ease;
}

.flash.is-hiding {
    opacity: 0;
    transform: translateY(-0.35rem);
}

.flash-success {
    border-color: color-mix(in srgb, var(--success) 40%, var(--line));
}

.flash-error {
    border-color: color-mix(in srgb, var(--danger) 40%, var(--line));
}

.page-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    margin: 2rem 0;
}

.section-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1rem;
    margin: 3rem 0 1rem;
}

.section-heading p:last-child {
    margin-bottom: 0;
}

.compact-heading {
    margin: 0 0 1rem;
}

.page-heading h1 {
    font-size: clamp(2.2rem, 5vw, 4rem);
}

.dashboard-link {
    color: inherit;
    text-decoration: none;
    transition: transform 160ms ease, border-color 160ms ease;
}

.dashboard-link:hover {
    border-color: color-mix(in srgb, var(--primary) 35%, var(--line));
    transform: translateY(-3px);
}

.admin-links {
    margin-top: 1rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.form-card {
    display: grid;
    align-content: start;
    gap: 1rem;
}

.form-card-wide {
    grid-column: span 2;
}

.action-card {
    background: linear-gradient(145deg, color-mix(in srgb, var(--accent-2) 70%, var(--surface)), var(--surface));
}

.step-strip {
    display: flex;
    gap: 0.4rem;
    margin-bottom: 1rem;
    overflow-x: auto;
    padding-bottom: 0.3rem;
}

.step-strip a {
    min-width: max-content;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.45rem 0.75rem;
    color: var(--muted);
    background: var(--surface);
    font-size: 0.75rem;
    font-weight: 800;
    text-decoration: none;
}

.step-strip .is-active {
    color: white;
    border-color: var(--primary-strong);
    background: var(--primary-strong);
}

.step-panel {
    --step-accent: var(--primary);
    scroll-margin-top: 6rem;
    margin-top: 1.2rem;
    border: 1px solid color-mix(in srgb, var(--step-accent) 24%, var(--line));
    border-radius: calc(var(--radius-lg) + 10px);
    padding: clamp(1rem, 2vw, 1.35rem);
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--step-accent) 12%, transparent), transparent 16rem),
        color-mix(in srgb, var(--surface) 94%, var(--step-accent));
    box-shadow: 0 18px 54px color-mix(in srgb, var(--step-accent) 12%, transparent);
}

.step-panel-1 {
    --step-accent: #4e5bd5;
}

.step-panel-2 {
    --step-accent: #16805c;
}

.step-panel-3 {
    --step-accent: #a45bce;
}

.step-panel-4 {
    --step-accent: #c87528;
}

.step-panel-5 {
    --step-accent: #20859f;
}

.step-panel > .section-heading:first-child {
    margin-top: 0;
}

.step-panel .section-heading {
    margin-top: 2rem;
}

.speaker-name-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.7rem;
}

.readiness {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.readiness span {
    border-radius: 999px;
    padding: 0.3rem 0.55rem;
    color: var(--muted);
    background: var(--surface-muted);
    font-size: 0.7rem;
    font-weight: 800;
}

.readiness .is-ready {
    color: var(--success);
}

.provider-tests {
    margin-top: 1rem;
    justify-content: flex-start;
}

.provider-tests div {
    margin-right: auto;
}

.provider-tests p {
    margin-bottom: 0;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
}

.image-tile {
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--surface-strong);
}

.image-tile img {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

.image-tile > div {
    display: grid;
    gap: 0.35rem;
    padding: 0.65rem;
}

.image-tile span {
    overflow: hidden;
    font-size: 0.76rem;
    font-weight: 750;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.text-button {
    border: 0;
    padding: 0;
    color: var(--primary-strong);
    background: transparent;
    font-weight: 800;
    cursor: pointer;
}

.danger-text {
    color: var(--danger);
}

.version-list {
    display: grid;
    gap: 0.6rem;
}

.version-list article {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    padding: 0.7rem 0;
}

.version-list article > div {
    display: grid;
}

.version-list small {
    color: var(--muted);
}

.version-actions {
    display: flex !important;
    align-items: center;
    justify-content: flex-end;
    gap: 0.8rem;
    flex-shrink: 0;
}

.script-editor {
    margin-top: 1rem;
}

.script-editor textarea {
    min-height: 25rem;
    line-height: 1.75;
}

.blur-panel.is-blurred textarea {
    filter: blur(6px);
    user-select: none;
}

.editor-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1rem;
    color: var(--muted);
    font-size: 0.82rem;
}

.audio-config-grid,
.voice-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.voice-card {
    display: grid;
    gap: 0.85rem;
    min-width: 0;
    margin: 0;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 1rem;
    background: var(--surface-strong);
}

.voice-card legend {
    padding: 0 0.35rem;
    font-weight: 850;
}

.voice-card p {
    margin-bottom: 0;
    font-size: 0.82rem;
}

.is-searchable-source {
    position: absolute;
    width: 1px !important;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

.searchable-select {
    position: relative;
    min-width: 0;
}

.searchable-select-input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 0.78rem 0.85rem;
    color: var(--text);
    background: var(--surface-strong);
    outline: none;
}

.searchable-select-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 14%, transparent);
}

.audio-player {
    display: block;
    width: 100%;
    max-width: 100%;
    min-width: 0;
}

.question-preview {
    margin-top: 1rem;
}

.question-preview-list {
    display: grid;
    gap: 0.7rem;
    margin: 0;
    padding-left: 1.4rem;
}

.question-preview-list li {
    border-bottom: 1px solid var(--line);
    padding: 0.65rem 0;
}

.question-preview-list strong,
.question-preview-list small {
    display: block;
}

.share-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.qr-code {
    width: min(100%, 20rem);
    aspect-ratio: 1;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 0.7rem;
    background: white;
}

.question-preview-list small {
    margin-top: 0.2rem;
    color: var(--muted);
}

.job-progress {
    width: 100%;
    height: 0.8rem;
    border: 0;
    border-radius: 999px;
    color: var(--primary);
    background: var(--surface-muted);
    appearance: none;
}

.job-progress::-webkit-progress-bar {
    border-radius: inherit;
    background: var(--surface-muted);
}

.job-progress::-webkit-progress-value {
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), var(--success));
}

.job-progress::-moz-progress-bar {
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), var(--success));
}

.job-status {
    margin: 0;
    color: var(--text);
    font-weight: 800;
}

.exercise-shell {
    display: grid;
    gap: 1rem;
}

.exercise-hero {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 2rem;
    align-items: end;
    min-height: 20rem;
}

.exercise-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 20rem), 1fr));
    gap: 1rem;
}

.exercise-mode-tabs {
    display: flex;
    width: fit-content;
    max-width: 100%;
    gap: 0.35rem;
    border: 1px solid color-mix(in srgb, var(--primary) 25%, var(--line));
    border-radius: 999px;
    padding: 0.35rem;
    background:
        linear-gradient(135deg, color-mix(in srgb, var(--accent) 72%, var(--surface)), color-mix(in srgb, var(--accent-2) 64%, var(--surface)));
    box-shadow: 0 16px 45px rgba(30, 42, 73, 0.08);
}

.exercise-mode-tab {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 0.62rem 1.05rem;
    color: var(--muted);
    background: transparent;
    font-weight: 900;
    cursor: pointer;
}

.exercise-mode-tab.is-active {
    color: white;
    background: var(--primary-strong);
    box-shadow: 0 10px 28px color-mix(in srgb, var(--primary) 24%, transparent);
}

.practice-questions {
    display: grid;
    gap: 1rem;
}

.practice-question {
    display: grid;
    gap: 1rem;
    scroll-margin-top: 8rem;
}

.practice-question h2 {
    max-width: 48rem;
}

.transcript-panel summary {
    color: var(--primary-strong);
    font-weight: 850;
    cursor: pointer;
}

.parallel-transcript {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0;
    margin-top: 1rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.parallel-transcript > * {
    margin: 0;
    border-bottom: 1px solid var(--line);
    padding: 0.8rem 1rem;
}

.parallel-transcript > :nth-child(odd) {
    border-right: 1px solid var(--line);
}

.parallel-transcript > strong {
    background: var(--surface-muted);
}

.transcript-original,
.transcript-translation {
    white-space: pre-wrap;
}

.compact-button {
    width: fit-content;
    padding: 0.55rem 0.85rem;
    font-size: 0.86rem;
}

.is-translation-blurred .transcript-translation {
    filter: blur(7px);
    user-select: none;
}

.is-translation-blurred .transcript-translation:hover {
    filter: blur(5px);
}

.transcript-original.is-evidence-highlight {
    outline: 3px solid color-mix(in srgb, var(--warning) 65%, transparent);
    outline-offset: -3px;
    background: color-mix(in srgb, var(--warning) 22%, var(--surface-strong));
}

.question-sticky-bar {
    position: sticky;
    z-index: 18;
    top: 4.35rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.85rem;
    margin: 0 0 1rem;
    border: 1px solid #cbd4ff;
    border-radius: 999px;
    padding: 0.55rem;
    background: linear-gradient(135deg, #e6ebff, #e7fbf4);
    box-shadow: 0 16px 45px rgba(30, 42, 73, 0.12);
    backdrop-filter: blur(18px);
}

.question-pill-nav {
    display: flex;
    gap: 0.35rem;
    min-width: 0;
    overflow-x: auto;
    padding: 0.1rem;
    scrollbar-width: thin;
}

.question-nav-pill {
    display: inline-grid;
    flex: 0 0 auto;
    place-items: center;
    min-width: 2.15rem;
    height: 2.15rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    color: var(--text);
    background: var(--surface);
    font-weight: 900;
    text-decoration: none;
}

.question-nav-pill.is-active,
.question-nav-pill:focus-visible {
    border-color: var(--primary);
    color: white;
    background: var(--primary);
}

.question-sticky-actions {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex: 0 0 auto;
}

.answer-bulk-form {
    display: inline-flex;
    align-items: center;
    gap: 0;
}

.answer-bulk-form-compact {
    grid-template-columns: auto;
}

.answer-bulk-form-compact .primary-button {
    min-height: 2.5rem;
    padding: 0.55rem 1.05rem;
    white-space: nowrap;
}

.answer-bulk-form-compact .field-help {
    margin: 0;
    font-size: 0.72rem;
    line-height: 1.2;
}

.language-toggle {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.45rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.35rem;
    background: var(--surface-strong);
}

.language-toggle legend {
    width: 100%;
    margin: 0 0 0.1rem 0.35rem;
    color: var(--muted);
    font-size: 0.72rem;
    font-weight: 850;
    text-transform: uppercase;
}

.language-toggle label {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    border-radius: 999px;
    padding: 0.35rem 0.55rem;
    font-size: 0.86rem;
    font-weight: 750;
}

.language-toggle label:has(input:checked) {
    background: color-mix(in srgb, var(--primary) 12%, var(--surface));
    color: var(--primary-strong);
}

.language-toggle-compact {
    max-width: 18rem;
}

.language-toggle-compact legend {
    display: none;
}

.feedback-lang-de {
    display: none;
}

[data-feedback-language="de"] .feedback-lang-target {
    display: none;
}

[data-feedback-language="de"] .feedback-lang-de {
    display: inline;
}

.answer-feedback[data-feedback-language="target"] .feedback-lang-target {
    display: inline !important;
}

.answer-feedback[data-feedback-language="target"] .feedback-lang-de {
    display: none !important;
}

.answer-feedback[data-feedback-language="de"] .feedback-lang-target {
    display: none !important;
}

.answer-feedback[data-feedback-language="de"] .feedback-lang-de {
    display: inline !important;
}

.answer-feedback.is-feedback-de .feedback-lang-target {
    display: none !important;
}

.answer-feedback.is-feedback-de .feedback-lang-de {
    display: inline !important;
}

.chat-feedback[data-feedback-language="target"] .feedback-lang-target {
    display: inline !important;
}

.chat-feedback[data-feedback-language="target"] .feedback-lang-de {
    display: none !important;
}

.chat-feedback[data-feedback-language="de"] .feedback-lang-target {
    display: none !important;
}

.chat-feedback[data-feedback-language="de"] .feedback-lang-de {
    display: inline !important;
}

.chat-feedback.is-feedback-de .feedback-lang-target {
    display: none !important;
}

.chat-feedback.is-feedback-de .feedback-lang-de {
    display: inline !important;
}

.answer-form,
.answer-options {
    display: grid;
    gap: 0.7rem;
}

.structured-answer-list {
    display: grid;
    gap: 0.75rem;
}

.matching-row {
    grid-template-columns: minmax(8rem, 1fr) minmax(10rem, 1.4fr);
    align-items: center;
}

.ordering-chip-list {
    display: grid;
    gap: 0.55rem;
}

.ordering-chip {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 0.55rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.45rem 0.55rem;
    background: var(--surface-strong);
    box-shadow: var(--shadow-soft);
    cursor: grab;
}

.ordering-chip.is-dragging {
    opacity: 0.62;
}

.ordering-chip-index {
    display: inline-grid;
    place-items: center;
    width: 1.65rem;
    height: 1.65rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--primary) 13%, var(--surface));
    color: var(--primary-strong);
    font-size: 0.8rem;
    font-weight: 850;
}

.ordering-chip-label {
    font-weight: 750;
}

.chip-move {
    border: 1px solid var(--line);
    border-radius: 999px;
    width: 1.8rem;
    height: 1.8rem;
    color: var(--primary-strong);
    background: var(--surface);
    font-weight: 900;
    cursor: pointer;
}

.answer-options {
    border: 0;
    padding: 0;
}

.answer-option {
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    padding: 0.8rem;
    background: var(--surface-strong);
    cursor: pointer;
}

.answer-option:has(input:checked) {
    border-color: var(--primary);
    background: color-mix(in srgb, var(--accent) 55%, var(--surface));
}

.answer-feedback {
    border-left: 4px solid var(--warning);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1rem;
    background: color-mix(in srgb, var(--warning) 9%, var(--surface-strong));
}

.answer-feedback-compact {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.65rem 1rem;
}

.answer-feedback-tools {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.2rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.15rem;
    background: color-mix(in srgb, var(--surface-strong) 82%, transparent);
}

.answer-feedback-lang-button {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 0.18rem 0.45rem;
    color: var(--muted);
    background: transparent;
    font-size: 0.68rem;
    font-weight: 850;
    cursor: pointer;
}

.answer-feedback-lang-button.is-active {
    color: var(--primary-strong);
    background: color-mix(in srgb, var(--primary) 13%, var(--surface));
}

.answer-feedback p:last-child {
    margin-bottom: 0;
}

.solution-feedback {
    margin-top: 0.2rem;
}

.solution-feedback summary {
    color: var(--primary-strong);
    font-weight: 850;
    cursor: pointer;
}

.solution-feedback p {
    margin: 0.55rem 0 0;
    white-space: pre-wrap;
}

.answer-feedback-compact .solution-feedback[open] {
    flex-basis: 100%;
}

.feedback-correct {
    border-left-color: var(--success);
    background: color-mix(in srgb, var(--success) 9%, var(--surface-strong));
}

.feedback-try_again {
    border-left-color: var(--danger);
    background: color-mix(in srgb, var(--danger) 9%, var(--surface-strong));
}

.chat-shell {
    display: grid;
    gap: 1rem;
}

.character-actions,
.chat-persona {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.character-actions form {
    margin: 0;
}

.chat-persona {
    align-items: baseline;
    border-bottom: 1px solid var(--line);
    padding-bottom: 0.8rem;
}

.chat-persona span {
    color: var(--muted);
    font-size: 0.85rem;
}

.chat-messages {
    display: grid;
    gap: 0.7rem;
    max-height: 38rem;
    overflow-y: auto;
    padding: 0.2rem;
}

.chat-message {
    width: min(88%, 44rem);
    border: 1px solid var(--line);
    border-radius: var(--radius-md);
    padding: 0.85rem 1rem;
    background: var(--surface-strong);
}

.chat-message-user {
    justify-self: end;
    background: color-mix(in srgb, var(--accent) 55%, var(--surface-strong));
}

.chat-message p {
    margin: 0.25rem 0 0;
    color: var(--text);
}

.chat-message-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.7rem;
}

.chat-message-user.chat-feedback-status-good {
    border-color: color-mix(in srgb, var(--success) 55%, var(--line));
}

.chat-message-user.chat-feedback-status-hint {
    border-color: color-mix(in srgb, var(--warning) 55%, var(--line));
}

.chat-message-user.chat-feedback-status-correction {
    border-color: color-mix(in srgb, var(--danger) 55%, var(--line));
}

.chat-status-indicator {
    border-radius: 999px;
    padding: 0.25rem 0.5rem;
    color: var(--warning);
    background: color-mix(in srgb, var(--warning) 12%, var(--surface-strong));
    font-size: 0.7rem;
    font-weight: 850;
}

.chat-feedback-status-good .chat-status-indicator {
    color: var(--success);
    background: color-mix(in srgb, var(--success) 12%, var(--surface-strong));
}

.chat-feedback-status-correction .chat-status-indicator {
    color: var(--danger);
    background: color-mix(in srgb, var(--danger) 12%, var(--surface-strong));
}

.chat-feedback {
    margin-top: 0.7rem;
    border-top: 1px solid var(--line);
    padding-top: 0.6rem;
    color: var(--muted);
    font-size: 0.82rem;
}

.chat-feedback summary {
    display: flex;
    width: fit-content;
    max-width: 100%;
    min-height: 1.55rem;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    border-radius: 999px;
    color: var(--primary-strong);
    font-weight: 850;
    cursor: pointer;
    list-style: none;
}

.chat-feedback summary::-webkit-details-marker {
    display: none;
}

.chat-feedback-icon {
    display: inline-grid;
    width: 1.55rem;
    height: 1.55rem;
    flex: 0 0 auto;
    place-items: center;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: var(--surface-muted);
}

.chat-feedback-preview {
    min-width: 0;
    flex: 1 1 10rem;
    color: var(--text);
    font-weight: 750;
}

.chat-feedback-language-toggle {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: 0.2rem;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.15rem;
    background: var(--surface);
}

.chat-feedback-lang-button {
    appearance: none;
    border: 0;
    border-radius: 999px;
    padding: 0.18rem 0.42rem;
    color: var(--muted);
    background: transparent;
    font-size: 0.68rem;
    font-weight: 850;
    cursor: pointer;
}

.chat-feedback-lang-button.is-active {
    color: var(--primary-strong);
    background: color-mix(in srgb, var(--primary) 13%, var(--surface));
}

.chat-compose {
    display: grid;
    gap: 0.8rem;
    border-top: 1px solid var(--line);
    padding-top: 1rem;
}

.chat-loading {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin: 0;
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 750;
}

.chat-loading span {
    width: 0.42rem;
    height: 0.42rem;
    border-radius: 50%;
    background: var(--primary);
    animation: typing-dot 1s infinite ease-in-out;
}

.chat-loading span:nth-child(2) {
    animation-delay: 0.15s;
}

.chat-loading span:nth-child(3) {
    animation-delay: 0.3s;
}

@keyframes typing-dot {
    0%,
    80%,
    100% {
        opacity: 0.35;
        transform: translateY(0);
    }

    40% {
        opacity: 1;
        transform: translateY(-0.18rem);
    }
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

.empty-state {
    display: grid;
    min-height: 20rem;
    place-content: center;
    justify-items: start;
}

.status-list {
    display: grid;
    gap: 0.65rem;
    margin: 0;
    padding: 0;
    list-style: none;
}

.status-list li {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.status-dot {
    width: 0.65rem;
    height: 0.65rem;
    flex: 0 0 auto;
    border-radius: 50%;
    background: var(--muted);
}

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

.status-dot.is-bad {
    background: var(--danger);
}

.diagnostic-list {
    display: grid;
    gap: 0;
    margin: 0;
}

.diagnostic-list div {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    padding: 0.7rem 0;
}

.diagnostic-list dt {
    color: var(--muted);
}

.diagnostic-list dd {
    margin: 0;
    font-weight: 750;
    text-align: right;
}

[hidden] {
    display: none !important;
}

@media (max-width: 960px) {
    .hero-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .hero-card {
        grid-column: span 2;
        grid-row: auto;
    }

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

    .exercise-hero {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .flash-stack {
        top: 0.7rem;
        right: 0.5rem;
        width: calc(100% - 1rem);
    }

    .site-header {
        position: static;
        align-items: flex-start;
        flex-wrap: nowrap;
        width: min(calc(100% - 1rem), var(--page));
        gap: 0.5rem;
    }

    .header-actions {
        justify-content: flex-end;
        flex: 1 1 12rem;
        flex-wrap: nowrap;
        gap: 0.2rem;
    }

    .compact-nav-action {
        width: 2.35rem;
        min-height: 2.35rem;
        justify-content: center;
        padding: 0.45rem;
    }

    .compact-nav-action .nav-icon {
        display: inline-block;
    }

    .compact-nav-action .nav-label {
        position: absolute;
        width: 1px;
        height: 1px;
        overflow: hidden;
        clip: rect(0 0 0 0);
        white-space: nowrap;
    }

    .nav-link,
    .icon-button {
        padding: 0.5rem 0.65rem;
        font-size: 0.78rem;
    }

    .compact-nav-action.nav-link,
    .compact-nav-action.icon-button {
        width: 2.35rem;
        min-width: 2.35rem;
        padding: 0.45rem;
    }

    .page-shell {
        width: min(calc(100% - 1rem), var(--page));
        margin-top: 0.5rem;
    }

    .auth-shell,
    .form-grid,
    .card-grid,
    .exercise-grid {
        grid-template-columns: 1fr;
    }

    .exercise-shell,
    .exercise-grid > *,
    .practice-questions,
    .practice-question,
    .transcript-panel,
    .chat-shell {
        min-width: 0;
        max-width: 100%;
    }

    .exercise-shell {
        overflow-x: clip;
    }

    .exercise-mode-tabs {
        width: 100%;
        border-radius: var(--radius-md);
    }

    .exercise-mode-tab {
        flex: 1;
        padding-inline: 0.75rem;
    }

    .exercise-hero {
        gap: 1rem;
        min-height: auto;
    }

    .exercise-hero .meta-list-horizontal div {
        min-width: min(100%, 8rem);
    }

    .audio-player {
        max-width: calc(100vw - 3rem);
    }

    .form-card-wide {
        grid-column: auto;
    }

    .auth-card.accent-card {
        min-height: 14rem;
    }

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

    .hero-card {
        min-height: 15rem;
    }

    .toolbar,
    .page-heading,
    .section-heading,
    .editor-footer,
    .version-list article,
    .site-footer {
        align-items: stretch;
        flex-direction: column;
    }

    .version-actions {
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .toolbar-filter {
        width: 100%;
    }

    .choice-group {
        grid-template-columns: 1fr;
    }

    .answer-bulk-form {
        align-items: center;
        justify-content: space-between;
        flex-direction: row;
        gap: 0.5rem;
    }

    .question-sticky-bar {
        top: 3.8rem;
        align-items: stretch;
        border-radius: var(--radius-md);
        flex-direction: column;
        max-width: 100%;
        overflow: hidden;
    }

    .question-pill-nav {
        max-width: 100%;
    }

    .question-sticky-actions {
        align-items: stretch;
        flex-direction: row;
        min-width: 0;
    }

    .answer-bulk-status {
        flex: 0 0 auto;
    }

    .answer-bulk-form .primary-button {
        width: auto;
        flex: 1 1 auto;
    }

    .parallel-transcript {
        grid-template-columns: 1fr;
    }

    .parallel-transcript > :nth-child(odd) {
        border-right: 0;
    }

    .parallel-transcript > strong:nth-child(2) {
        display: none;
    }

    .transcript-translation::before {
        display: block;
        margin-bottom: 0.3rem;
        color: var(--muted);
        content: "Deutsch";
        font-size: 0.72rem;
        font-weight: 850;
        text-transform: uppercase;
    }

    .matching-row {
        grid-template-columns: 1fr;
    }

    .audio-config-grid,
    .voice-grid,
    .speaker-name-grid {
        grid-template-columns: 1fr;
    }

    .chat-message {
        width: 100%;
    }

    .chat-feedback summary {
        align-items: flex-start;
    }

    .chat-feedback-preview {
        overflow-wrap: anywhere;
    }
}

@media (max-width: 470px) {
    .brand span:last-child {
        display: none;
    }

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

    .hero-card {
        grid-column: auto;
    }

    .bento-card {
        border-radius: var(--radius-md);
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
        animation-duration: 0.001ms !important;
    }
}