:root {
    --bg: #f5f2ea;
    --panel: #fffdf8;
    --ink: #25231f;
    --muted: #6d675d;
    --line: #ded7c8;
    --brand: #116466;
    --brand-dark: #0b4547;
    --accent: #d9a441;
    --danger: #b83232;
    --success: #287a47;
    --warning: #a66700;
    --shadow: 0 18px 45px rgba(41, 35, 25, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: radial-gradient(circle at top left, rgba(217, 164, 65, 0.2), transparent 32rem), var(--bg);
    color: var(--ink);
    font-family: Georgia, 'Times New Roman', serif;
    line-height: 1.5;
}

a {
    color: var(--brand);
    text-decoration: none;
}

a:hover {
    color: var(--brand-dark);
}

.auth-page {
    align-items: center;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.auth-card,
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 22px;
    box-shadow: var(--shadow);
    padding: 1.5rem;
}

.auth-card {
    max-width: 460px;
    width: 100%;
}

.eyebrow {
    color: var(--brand);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    line-height: 1.15;
    margin: 0 0 0.75rem;
}

p {
    color: var(--muted);
    margin: 0 0 1rem;
}

.app-shell {
    display: grid;
    grid-template-columns: 270px minmax(0, 1fr);
    min-height: 100vh;
}

.sidebar {
    background: #163d3f;
    color: #fffdf8;
    padding: 1.25rem;
}

.sidebar-brand {
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
}

.sidebar nav a {
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.86);
    display: block;
    margin-bottom: 0.35rem;
    padding: 0.72rem 0.85rem;
}

.sidebar nav a.active,
.sidebar nav a:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #ffffff;
}

.main-area {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.topbar {
    align-items: center;
    background: rgba(255, 253, 248, 0.86);
    border-bottom: 1px solid var(--line);
    display: flex;
    justify-content: space-between;
    padding: 1rem 1.5rem;
}

.topbar-actions {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: flex-end;
}

.content {
    flex: 1;
    padding: 1.5rem;
    min-width: 0;
}

.footer {
    border-top: 1px solid var(--line);
    color: var(--muted);
    font-size: 0.9rem;
    padding: 1rem 1.5rem;
}

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

.stat {
    border-left: 5px solid var(--accent);
}

.hero-card,
.warning-card,
.page-heading,
.filter-card,
.table-card {
    margin-bottom: 1rem;
}

.page-heading {
    align-items: center;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
}

.warning-card {
    border-color: rgba(217, 164, 65, 0.65);
}

.narrow-card {
    max-width: 720px;
}

.stat strong {
    display: block;
    font-size: 2rem;
}

.button,
button,
input[type='submit'] {
    background: var(--brand);
    border: 0;
    border-radius: 999px;
    color: #fff;
    cursor: pointer;
    display: inline-block;
    font: inherit;
    font-weight: 700;
    padding: 0.72rem 1.1rem;
}

.button.secondary,
button.secondary {
    background: #eadfca;
    color: var(--ink);
}

.button.small,
button.small {
    font-size: 0.82rem;
    padding: 0.45rem 0.7rem;
}

.form-actions,
.quick-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-top: 1rem;
}

.filter-form {
    align-items: end;
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(220px, 2fr) minmax(180px, 1fr) minmax(160px, 1fr) auto;
}

.filter-actions,
.action-row,
.pagination {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.action-row form {
    margin: 0;
}

.checkbox-label {
    align-items: center;
    display: flex;
    gap: 0.55rem;
}

.checkbox-label input {
    width: auto;
}

.table-card {
    overflow-x: auto;
}

.pagination {
    justify-content: space-between;
    margin-top: 1rem;
}

.placeholder-grid {
    margin-top: 1rem;
}

.dashboard-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lesson-date-group {
    margin-top: 1.25rem;
}

.lesson-date-group > h3 {
    align-items: center;
    color: var(--brand-dark);
    display: flex;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.lesson-date-group > h3::after {
    background: var(--line);
    content: '';
    flex: 1;
    height: 1px;
}

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

.lesson-card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 1.15rem;
}

.lesson-card-header,
.lesson-badges,
.lesson-meta {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: 0.45rem;
}

.lesson-card-header {
    justify-content: space-between;
}

.lesson-card h3 {
    margin-top: 0.75rem;
}

.lesson-meta {
    color: var(--muted);
    font-size: 0.92rem;
    margin: 0.75rem 0;
}

.progress-wrap {
    background: #eadfca;
    border-radius: 999px;
    height: 0.7rem;
    overflow: hidden;
}

.progress-bar {
    background: linear-gradient(90deg, var(--brand), var(--accent));
    height: 100%;
    min-width: 0.2rem;
}

.progress-text {
    font-size: 0.88rem;
    margin-top: 0.35rem;
}

.lesson-view-layout {
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
}

.lesson-player-card,
.lesson-side-panel {
    min-width: 0;
}

.lesson-side-panel {
    display: grid;
    gap: 1rem;
}

.lesson-progress-header {
    align-items: flex-start;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.lesson-video {
    background: #111;
    border-radius: 18px;
    display: block;
    margin-top: 1rem;
    max-height: 68vh;
    width: 100%;
}

.stacked-form {
    margin-top: 1rem;
}

.browser-practice-box {
    background: #f7f1e4;
    border: 1px solid var(--line);
    border-radius: 16px;
    margin: 1rem 0;
    overflow: hidden;
}

.fake-address-bar {
    background: #e8deca;
    color: var(--muted);
    font-family: Consolas, 'Courier New', monospace;
    padding: 0.7rem 0.9rem;
}

.practice-page-area {
    background: #fffdf8;
    min-height: 140px;
    padding: 1rem;
}

.office-practical-panel {
    display: grid;
    gap: 1rem;
}

.office-panel-heading {
    align-items: flex-start;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
}

.office-step-card {
    background: #f7f1e4;
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 1rem;
}

.office-step-card h4 {
    margin: 0.35rem 0 0.55rem;
}

.office-upload-form {
    background: #fff9ea;
    border: 1px dashed rgba(17, 100, 102, 0.45);
    border-radius: 16px;
    padding: 1rem;
}

.office-web-card {
    background: linear-gradient(145deg, #fffdf8, #edf5f5);
}

.office-web-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    margin-bottom: 1rem;
}

.office-web-frame {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    min-height: 68vh;
    width: 100%;
}

.onlyoffice-editor {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 18px;
    min-height: 72vh;
    overflow: hidden;
    width: 100%;
}

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

.browser-simulator-card {
    background: linear-gradient(145deg, #fffdf8, #f3ead8);
}

.browser-task-head,
.browser-toolbar,
.browser-start-row,
.sim-search-row {
    align-items: center;
    display: flex;
    gap: 0.7rem;
}

.browser-task-head {
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.browser-expected-actions,
.browser-submit-card {
    background: rgba(255, 253, 248, 0.72);
    border: 1px solid var(--line);
    border-radius: 16px;
    margin-bottom: 1rem;
    padding: 1rem;
}

.browser-start-row {
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.browser-window {
    background: #102426;
    border: 1px solid #0c1c1e;
    border-radius: 20px;
    box-shadow: 0 20px 45px rgba(16, 36, 38, 0.18);
    overflow: hidden;
}

.browser-toolbar {
    background: #193d40;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding: 0.8rem;
}

.browser-toolbar input {
    background: #fffdf8;
    border-radius: 999px;
    min-width: 0;
}

.browser-icon-button {
    background: rgba(255, 255, 255, 0.12);
    color: #fffdf8;
    padding-inline: 0.85rem;
}

.browser-page-area {
    background: #fffdf8;
    min-height: 390px;
    padding: 1.25rem;
}

.google-practice-frame {
    background: #fff;
    border: 0;
    display: block;
    min-height: 68vh;
    width: 100%;
}

.google-address {
    border-radius: 999px;
    display: block;
    flex: 1;
}

.side-lesson-video {
    max-height: 34vh;
}

.sim-page h3 {
    color: var(--brand-dark);
}

.sim-card-grid,
.sim-results {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 1rem;
}

.sim-card,
.sim-results button {
    background: #f7f1e4;
    border: 1px solid var(--line);
    border-radius: 16px;
    color: var(--ink);
    padding: 1rem;
    text-align: left;
}

.sim-card strong,
.sim-results strong,
.sim-card span,
.sim-results span {
    display: block;
}

.sim-card span,
.sim-results span {
    color: var(--muted);
    font-size: 0.9rem;
    font-weight: 400;
    margin-top: 0.35rem;
}

.sim-search-row input {
    flex: 1;
}

.sim-success {
    border-left: 5px solid var(--success);
    padding-left: 1rem;
}

.button.disabled,
.button[aria-disabled='true'] {
    background: #c9c1b3;
    color: #625b51;
    cursor: not-allowed;
}

.empty-state {
    text-align: center;
}

code {
    background: #f0eadc;
    border-radius: 8px;
    padding: 0.15rem 0.35rem;
}

label {
    display: block;
    font-weight: 700;
    margin: 0.85rem 0 0.35rem;
}

input,
select,
textarea {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--ink);
    font: inherit;
    padding: 0.78rem 0.9rem;
    width: 100%;
}

table {
    border-collapse: collapse;
    width: 100%;
}

th,
td {
    border-bottom: 1px solid var(--line);
    padding: 0.85rem;
    text-align: left;
}

th {
    color: var(--muted);
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.badge {
    border-radius: 999px;
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 700;
    padding: 0.25rem 0.65rem;
}

.badge-active,
.badge-approved,
.badge-paid,
.badge-completed,
.badge-hls,
.badge-allowed,
.badge-viewed,
.badge-submitted,
.badge-marked,
.badge-video_only,
.badge-office_practical,
.badge-browser_practical,
.badge-file_download,
.badge-access,
.badge-onlyoffice,
.badge-microsoft_graph,
.badge-internal_simulator,
.badge-google_search_iframe,
.badge-super_admin,
.badge-admin,
.badge-teacher,
.badge-yes {
    background: rgba(40, 122, 71, 0.12);
    color: var(--success);
}

.badge-pending,
.badge-partial,
.badge-overdue,
.badge-new,
.badge-watching,
.badge-processing,
.badge-partially_watched,
.badge-in_progress,
.badge-assigned,
.badge-opened,
.badge-task_required,
.badge-seek_detected {
    background: rgba(217, 164, 65, 0.18);
    color: var(--warning);
}

.badge-disabled,
.badge-inactive,
.badge-rejected,
.badge-blocked,
.badge-failed,
.badge-unpaid,
.badge-no {
    background: rgba(184, 50, 50, 0.12);
    color: var(--danger);
}

.badge-not_watched,
.badge-not_started,
.badge-not_required,
.badge-no_task {
    background: rgba(109, 103, 93, 0.14);
    color: var(--muted);
}

.badge-submitted {
    background: rgba(33, 94, 156, 0.12);
    color: #215e9c;
}

.badge-overdue,
.badge-seek_detected {
    background: rgba(184, 50, 50, 0.12);
    color: var(--danger);
}

.notice {
    background: rgba(217, 164, 65, 0.18);
    border: 1px solid rgba(217, 164, 65, 0.45);
    border-radius: 16px;
    color: #5d4108;
    margin: 1rem 0;
    padding: 0.9rem 1rem;
}

.success {
    background: rgba(40, 122, 71, 0.1);
    border-color: rgba(40, 122, 71, 0.35);
    color: var(--success);
}

.error {
    background: rgba(184, 50, 50, 0.1);
    border-color: rgba(184, 50, 50, 0.35);
    color: var(--danger);
}

@media (max-width: 860px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar nav {
        display: grid;
        gap: 0.35rem;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .dashboard-grid,
    .lesson-card-grid,
    .lesson-view-layout,
    .settings-grid,
    .sim-card-grid,
    .sim-results {
        grid-template-columns: 1fr;
    }

    .browser-toolbar,
    .browser-task-head,
    .sim-search-row {
        align-items: stretch;
        flex-direction: column;
    }

    .filter-form,
    .page-heading {
        align-items: stretch;
        grid-template-columns: 1fr;
    }

    .page-heading {
        flex-direction: column;
    }

    .topbar {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Student learning app refinements */
.student-app,
.auth-page {
    --student-bg: #f1f7ff;
    --student-panel: #ffffff;
    --student-ink: #183153;
    --student-muted: #637083;
    --student-blue: #2563eb;
    --student-blue-dark: #1d4ed8;
    --student-green: #15803d;
    --student-orange: #c66a00;
    --student-red: #c2410c;
    --student-soft-blue: #dbeafe;
    --student-soft-green: #dcfce7;
    --student-soft-orange: #ffedd5;
    --student-soft-red: #fee2e2;
    --student-line: #d9e4f2;
    background:
        radial-gradient(circle at 12% 12%, rgba(147, 197, 253, 0.45), transparent 22rem),
        radial-gradient(circle at 88% 8%, rgba(254, 215, 170, 0.58), transparent 18rem),
        linear-gradient(135deg, #f8fbff 0%, var(--student-bg) 56%, #fff7ed 100%);
    color: var(--student-ink);
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

.student-app .card,
.auth-page .auth-card {
    background: rgba(255, 255, 255, 0.92);
    border-color: var(--student-line);
    border-radius: 28px;
    box-shadow: 0 20px 45px rgba(37, 99, 235, 0.09);
}

.student-app p,
.auth-page p {
    color: var(--student-muted);
}

.student-app .eyebrow,
.auth-page .eyebrow {
    color: var(--student-blue);
}

.student-app .button,
.student-app button,
.student-app input[type='submit'],
.auth-page .button,
.auth-page button,
.auth-page input[type='submit'] {
    background: var(--student-blue);
    border-radius: 18px;
    box-shadow: 0 12px 22px rgba(37, 99, 235, 0.18);
    font-size: 1rem;
    min-height: 44px;
    padding: 0.82rem 1.25rem;
}

.student-app .button:hover,
.student-app button:hover,
.auth-page .button:hover,
.auth-page button:hover {
    background: var(--student-blue-dark);
    color: #fff;
}

.student-app .button.secondary,
.student-app button.secondary,
.auth-page .button.secondary,
.auth-page button.secondary {
    background: #eaf2ff;
    box-shadow: none;
    color: var(--student-blue-dark);
}

.student-app .button.disabled,
.student-app .button[aria-disabled='true'] {
    background: #d5dde8;
    box-shadow: none;
    color: #617083;
}

.student-app .sidebar {
    background: linear-gradient(180deg, #1d4ed8 0%, #0f766e 100%);
    padding: 1.35rem;
}

.student-app .sidebar-brand {
    align-items: center;
    display: grid;
    gap: 0.25rem;
    padding-bottom: 1.25rem;
}

.student-app .sidebar-logo {
    align-items: center;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.26);
    border-radius: 18px;
    display: inline-flex;
    font-size: 0.78rem;
    font-weight: 800;
    justify-content: center;
    letter-spacing: 0.08em;
    padding: 0.35rem 0.65rem;
    text-transform: uppercase;
    width: max-content;
}

.student-app .sidebar-brand small {
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.86rem;
}

.student-app .sidebar nav a {
    border-radius: 18px;
    font-size: 1.02rem;
    font-weight: 800;
    margin-bottom: 0.45rem;
    padding: 0.9rem 1rem;
}

.student-app .sidebar nav a.active,
.student-app .sidebar nav a:hover {
    background: rgba(255, 255, 255, 0.2);
}

.student-app .topbar {
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(14px);
}

.student-name-pill {
    background: #fff;
    border: 1px solid var(--student-line);
    border-radius: 999px;
    color: var(--student-ink);
    font-weight: 800;
    padding: 0.55rem 0.9rem;
}

.student-app .content {
    padding: 1.7rem;
}

.student-hero {
    background:
        linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(22, 163, 74, 0.08)),
        rgba(255, 255, 255, 0.94);
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(0, 1fr) auto;
}

.student-hero h2 {
    font-size: clamp(1.7rem, 4vw, 2.6rem);
}

.friendly-status-row,
.quick-actions,
.result-meta,
.task-card-meta,
.fee-summary-grid,
.profile-grid,
.mini-card-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.guide-card,
.next-step-card {
    border-left: 8px solid var(--student-blue);
}

.guide-card h3,
.next-step-card h3 {
    font-size: 1.45rem;
}

.student-dashboard-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    margin: 1rem 0;
}

.student-section-head {
    align-items: center;
    display: flex;
    gap: 1rem;
    justify-content: space-between;
    margin: 1.35rem 0 0.85rem;
}

.student-section-head h2,
.student-section-head h3 {
    margin-bottom: 0.25rem;
}

.friendly-card-grid,
.task-card-grid,
.results-grid,
.fee-card-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.lesson-card {
    border-radius: 26px;
    display: grid;
    gap: 0.75rem;
    min-height: 100%;
}

.lesson-card h3 {
    font-size: 1.3rem;
    margin: 0.15rem 0;
}

.lesson-card .button,
.task-card .button,
.result-card .button,
.fee-card .button {
    text-align: center;
}

.lesson-main-status {
    align-items: center;
    background: #f8fbff;
    border: 1px solid var(--student-line);
    border-radius: 20px;
    display: flex;
    gap: 0.75rem;
    padding: 0.8rem;
}

.lesson-main-status strong {
    color: var(--student-ink);
    display: block;
}

.lesson-icon,
.task-icon,
.guide-icon {
    align-items: center;
    background: var(--student-soft-blue);
    border-radius: 18px;
    color: var(--student-blue-dark);
    display: inline-flex;
    flex: 0 0 auto;
    font-size: 1.3rem;
    font-weight: 900;
    height: 3rem;
    justify-content: center;
    width: 3rem;
}

.friendly-steps {
    counter-reset: friendly-step;
    display: grid;
    gap: 0.65rem;
    margin: 1rem 0;
    padding: 0;
}

.friendly-steps li {
    align-items: flex-start;
    background: #f8fbff;
    border: 1px solid var(--student-line);
    border-radius: 18px;
    display: grid;
    gap: 0.35rem;
    grid-template-columns: auto minmax(0, 1fr);
    list-style: none;
    padding: 0.8rem;
}

.friendly-steps li::before {
    align-items: center;
    background: var(--student-blue);
    border-radius: 999px;
    color: #fff;
    content: counter(friendly-step);
    counter-increment: friendly-step;
    display: inline-flex;
    font-weight: 900;
    height: 1.8rem;
    justify-content: center;
    width: 1.8rem;
}

.progress-wrap {
    background: #dbeafe;
    height: 0.85rem;
}

.student-app .progress-bar {
    background: linear-gradient(90deg, #2563eb, #22c55e);
}

.friendly-progress-copy {
    color: var(--student-ink);
    font-weight: 800;
}

.task-card,
.result-card,
.fee-card,
.profile-item,
.mini-card {
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid var(--student-line);
    border-radius: 24px;
    box-shadow: 0 12px 28px rgba(37, 99, 235, 0.06);
    padding: 1rem;
}

.mini-card {
    flex: 1 1 170px;
}

.task-card h3,
.result-card h3,
.fee-card h3,
.profile-item h3 {
    margin-top: 0.35rem;
}

.profile-item {
    flex: 1 1 220px;
}

.profile-item span,
.mini-card span,
.fee-card span,
.task-card span,
.result-card span {
    color: var(--student-muted);
    display: block;
    font-size: 0.86rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.profile-item strong,
.mini-card strong,
.fee-card strong {
    display: block;
    font-size: 1.2rem;
    margin-top: 0.25rem;
}

.fee-summary-card {
    border-left: 8px solid var(--student-green);
}

.fee-summary-card.pending,
.fee-card.pending {
    border-left: 8px solid var(--student-orange);
}

.fee-summary-card.blocked {
    border-left: 8px solid var(--student-red);
}

.student-app .notice {
    border-radius: 20px;
    font-weight: 700;
}

.student-app .notice.error,
.student-app .error {
    background: var(--student-soft-red);
    border-color: rgba(194, 65, 12, 0.25);
    color: #9a3412;
}

.student-app .notice.success,
.student-app .success {
    background: var(--student-soft-green);
    border-color: rgba(21, 128, 61, 0.25);
    color: var(--student-green);
}

.student-app .empty-state {
    background: linear-gradient(135deg, #ffffff, #eff6ff);
    border: 1px dashed #93c5fd;
    border-radius: 26px;
    padding: 2rem;
}

.student-app .lesson-view-layout {
    grid-template-columns: minmax(320px, 0.9fr) minmax(0, 1.6fr);
}

.student-app .lesson-side-panel {
    order: -1;
}

.student-app .lesson-video,
.student-app .office-web-frame,
.student-app .browser-window {
    border-radius: 24px;
}

.student-app .lesson-side-panel table,
.student-app .lesson-side-panel tbody,
.student-app .lesson-side-panel tr,
.student-app .lesson-side-panel th,
.student-app .lesson-side-panel td {
    display: block;
    width: 100%;
}

.student-app .lesson-side-panel tr {
    border-bottom: 1px solid var(--student-line);
    padding: 0.6rem 0;
}

.student-app .lesson-side-panel th,
.student-app .lesson-side-panel td {
    border: 0;
    padding: 0.15rem 0;
}

.password-field-wrap {
    position: relative;
}

.password-field-wrap input {
    padding-right: 6rem;
}

.password-toggle {
    background: #eaf2ff !important;
    box-shadow: none !important;
    color: var(--student-blue-dark) !important;
    min-height: 0 !important;
    padding: 0.45rem 0.7rem !important;
    position: absolute;
    right: 0.45rem;
    top: 50%;
    transform: translateY(-50%);
}

.auth-page {
    position: relative;
}

.auth-page::before {
    background: rgba(255, 255, 255, 0.44);
    border-radius: 999px;
    content: '';
    height: 24rem;
    position: absolute;
    right: -8rem;
    top: -8rem;
    width: 24rem;
}

.auth-card {
    max-width: 520px;
    position: relative;
}

.auth-card h1 {
    font-size: clamp(2rem, 7vw, 3rem);
}

.login-helper-card,
.device-message-card {
    background: #f8fbff;
    border: 1px solid var(--student-line);
    border-radius: 22px;
    margin: 1rem 0;
    padding: 1rem;
}

.device-message-card .friendly-steps {
    margin-bottom: 0;
}

.scroll-table {
    overflow-x: auto;
    width: 100%;
}

@media (max-width: 980px) {
    .student-dashboard-grid,
    .friendly-card-grid,
    .task-card-grid,
    .results-grid,
    .fee-card-grid,
    .student-app .lesson-view-layout {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 860px) {
    .student-app .content {
        padding: 1rem;
    }

    .student-app .sidebar {
        overflow: hidden;
        padding: 1rem;
    }

    .student-app .sidebar nav {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 560px) {
    .auth-page {
        padding: 1rem;
    }

    .student-app .sidebar nav {
        display: flex;
        gap: 0.5rem;
        max-width: 100%;
        overflow-x: auto;
        padding-bottom: 0.25rem;
        scrollbar-width: thin;
    }

    .student-app .sidebar nav a {
        flex: 0 0 auto;
        margin-bottom: 0;
        min-width: 8.8rem;
        text-align: center;
    }

    .student-app .button,
    .student-app button,
    .auth-page .button,
    .auth-page button,
    .student-app .form-actions > *,
    .student-app .action-row > * {
        width: 100%;
    }

    .password-toggle {
        width: auto !important;
    }

    .student-section-head,
    .lesson-progress-header,
    .office-panel-heading,
    .browser-toolbar,
    .browser-start-row {
        align-items: stretch;
        flex-direction: column;
    }
}