:root {
    color-scheme: light;
    --bg: #ffffff;
    --surface: #ffffff;
    --surface-soft: #f5f7ff;
    --ink: #111827;
    --muted: #64748b;
    --line: #e4e7ec;
    --primary: #4f46e5;
    --primary-deep: #312e81;
    --violet: #7c3aed;
    --success: #047857;
    --shadow: 0 18px 60px rgba(30, 41, 59, .11);
}

/* Teacher classrooms, assignments and student class area */
.flash.error { color: #991b1b; border-color: #fecaca; background: #fff1f2; }
.flash.error strong { display: block; margin-bottom: 6px; }
.flash.error ul { margin: 0; padding-left: 19px; }
.portal-hero { padding: 64px 0 58px; border-bottom: 1px solid var(--line); background: linear-gradient(145deg, color-mix(in srgb, var(--primary) 7%, var(--bg)), var(--bg)); }
.portal-hero-compact { padding: 46px 0 44px; }
.portal-hero h1 { max-width: 850px; margin: 13px 0 10px; font-size: clamp(39px, 5vw, 61px); line-height: 1.04; letter-spacing: -.05em; }
.portal-hero p { max-width: 750px; margin: 0; color: var(--muted); font-size: 16px; line-height: 1.7; }
.portal-hero-row { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; }
.portal-actions, .inline-forms, .row-actions, .form-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.back-link { display: inline-flex; margin-bottom: 18px; color: var(--primary); text-decoration: none; font-size: 12px; font-weight: 850; }
.portal-section { min-height: 55vh; padding: 42px 0 92px; background: var(--surface-soft); }
.portal-stat-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 30px; }
.portal-stat-grid article { display: grid; gap: 6px; padding: 21px; border: 1px solid var(--line); border-radius: 19px; background: var(--surface); box-shadow: 0 10px 35px rgba(30, 41, 59, .05); }
.portal-stat-grid article.is-alert { border-color: color-mix(in srgb, #f59e0b 50%, var(--line)); background: color-mix(in srgb, #fffbeb 65%, var(--surface)); }
.portal-stat-grid span { color: var(--muted); font-size: 10px; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.portal-stat-grid strong { font-size: 31px; letter-spacing: -.04em; }
.portal-stat-grid small { color: var(--muted); font-size: 10px; }
.portal-heading { display: flex; align-items: end; justify-content: space-between; gap: 18px; margin: 22px 0 17px; }
.portal-heading h2 { margin: 7px 0 0; font-size: 28px; letter-spacing: -.035em; }
.portal-empty { padding: 56px 30px; background: var(--surface); }
.classroom-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 17px; }
.classroom-card { display: block; padding: 25px; border: 1px solid var(--line); border-radius: 22px; color: var(--ink); background: var(--surface); box-shadow: 0 12px 40px rgba(30, 41, 59, .05); text-decoration: none; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.classroom-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--primary) 40%, var(--line)); box-shadow: 0 18px 48px rgba(49, 46, 129, .11); }
.classroom-card-top { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.classroom-icon, .member-avatar { display: grid; width: 48px; height: 48px; place-items: center; border-radius: 15px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--violet)); font-weight: 950; }
.classroom-card h2 { margin: 22px 0 7px; font-size: 23px; }
.classroom-card > p { min-height: 40px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.classroom-card-metrics { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 21px; padding-top: 17px; border-top: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.classroom-card-metrics b { color: var(--ink); font-size: 13px; }
.classroom-card-metrics .is-warning { color: #b45309; }
.status-badge { display: inline-flex; align-items: center; width: max-content; padding: 6px 9px; border-radius: 999px; color: var(--muted); background: var(--surface-soft); font-size: 9px; font-weight: 900; letter-spacing: .04em; text-transform: uppercase; white-space: nowrap; }
.status-badge.is-active { color: #047857; background: #d1fae5; }
.status-badge.is-warning { color: #92400e; background: #fef3c7; }
.status-badge.is-danger { color: #991b1b; background: #fee2e2; }
.portal-form { display: grid; gap: 18px; }
.form-section-card, .portal-card { padding: 29px; border: 1px solid var(--line); border-radius: 23px; background: var(--surface); box-shadow: 0 12px 42px rgba(30, 41, 59, .05); }
.form-section-heading { display: grid; grid-template-columns: auto 1fr; gap: 15px; margin-bottom: 24px; }
.form-section-heading > span { display: grid; width: 39px; height: 39px; place-items: center; border-radius: 12px; color: var(--primary); background: var(--surface-soft); font-size: 11px; font-weight: 950; }
.form-section-heading h2 { margin: 0 0 5px; font-size: 22px; }
.form-section-heading p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.portal-form .field input, .portal-form .field select, .portal-form .field textarea, .join-form-card .field input { width: 100%; border: 1px solid var(--line); border-radius: 12px; outline: 0; color: var(--ink); background: var(--bg); }
.portal-form .field input, .portal-form .field select, .join-form-card .field input { min-height: 46px; padding: 0 13px; }
.portal-form .field textarea { padding: 12px 13px; resize: vertical; }
.portal-form .field input:focus, .portal-form .field select:focus, .portal-form .field textarea:focus, .join-form-card .field input:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent); }
.toggle-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; margin-top: 18px; }
.toggle-grid-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.toggle-field { display: grid; grid-template-columns: auto 1fr; align-items: start; gap: 11px; padding: 14px; border: 1px solid var(--line); border-radius: 14px; background: var(--bg); cursor: pointer; }
.toggle-field input { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--primary); }
.toggle-field b, .toggle-field small { display: block; }
.toggle-field b { font-size: 12px; }
.toggle-field small { margin-top: 4px; color: var(--muted); font-size: 10px; line-height: 1.5; }
.form-actions { justify-content: flex-end; padding-top: 4px; }
.portal-grid-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: start; gap: 18px; }
.portal-card h2 { margin: 8px 0 10px; font-size: 23px; }
.portal-card > p { color: var(--muted); line-height: 1.65; }
.portal-block { margin-top: 20px; }
.join-code { display: block; margin: 14px 0 7px; color: var(--primary); font-size: clamp(31px, 5vw, 44px); letter-spacing: .14em; }
.join-code.is-off { color: var(--muted); letter-spacing: .05em; }
.join-code-card p { margin: 0 0 17px; }
.metric-row { display: grid; grid-template-columns: minmax(100px, 1fr) minmax(80px, 1fr) auto; align-items: center; gap: 12px; padding: 11px 0; border-top: 1px solid var(--line); }
.metric-row:first-of-type { margin-top: 12px; border-top: 0; }
.metric-row strong, .metric-row small { display: block; }
.metric-row small { margin-top: 3px; color: var(--muted); font-size: 9px; }
.metric-row b { color: var(--primary); font-size: 12px; }
.mini-bar { height: 7px; overflow: hidden; border-radius: 999px; background: var(--surface-soft); }
.mini-bar i { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--violet)); }
.member-list { display: grid; }
.member-row, .student-class-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 13px; padding: 14px 0; border-top: 1px solid var(--line); }
.member-row:first-child, .student-class-row:first-of-type { border-top: 0; }
.member-avatar { width: 40px; height: 40px; border-radius: 12px; }
.member-row strong, .member-row small, .student-class-row strong, .student-class-row small, .portal-table td strong, .portal-table td small { display: block; }
.member-row small, .student-class-row small, .portal-table td small { margin-top: 4px; color: var(--muted); font-size: 9px; }
.responsive-table { width: 100%; overflow-x: auto; }
.portal-table { width: 100%; border-collapse: collapse; min-width: 720px; }
.portal-table th, .portal-table td { padding: 14px 12px; border-top: 1px solid var(--line); text-align: left; font-size: 11px; }
.portal-table th { border-top: 0; color: var(--muted); font-size: 9px; font-weight: 900; letter-spacing: .05em; text-transform: uppercase; }
.score-pill { display: inline-flex; padding: 6px 8px; border-radius: 999px; color: var(--primary); background: var(--surface-soft); font-weight: 900; }
.table-action { padding: 4px 0; border: 0; color: var(--muted); background: none; cursor: pointer; font-size: 10px; font-weight: 800; }
.table-action:hover { color: #b91c1c; }
.assignment-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto; align-items: center; gap: 13px; padding: 14px 0; border-top: 1px solid var(--line); color: var(--ink); text-decoration: none; }
.assignment-row:first-of-type { border-top: 0; }
.assignment-type { display: grid; width: 39px; height: 39px; place-items: center; border-radius: 12px; color: var(--primary); background: var(--surface-soft); font-weight: 950; }
.assignment-row strong, .assignment-row small { display: block; }
.assignment-row small { margin-top: 4px; color: var(--muted); font-size: 9px; }
.assignment-row > b { color: var(--primary); }
.assignment-summary-grid { margin-bottom: 20px; }
.detail-list { display: grid; margin: 15px 0 0; }
.detail-list div { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-top: 1px solid var(--line); }
.detail-list dt { color: var(--muted); }
.detail-list dd { margin: 0; font-weight: 800; }
.rule-list { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.rule-list span { padding: 8px 10px; border-radius: 10px; color: var(--muted); background: var(--surface-soft); font-size: 10px; font-weight: 800; }
.rule-list span.is-on { color: #047857; background: #d1fae5; }
.teacher-private-note { margin-top: 17px; padding: 14px; border-left: 3px solid var(--primary); border-radius: 0 12px 12px 0; background: var(--surface-soft); }
.teacher-private-note p { margin: 5px 0 0; color: var(--muted); font-size: 11px; line-height: 1.6; }
.student-classroom-layout { grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); }
.student-classroom-layout > div { display: grid; gap: 18px; }
.join-form-card h2 { margin-bottom: 5px; }
.join-form-card > p { margin-top: 0; }
.join-form-card form { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 10px; margin-top: 19px; }
.code-input { font-size: 18px; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.student-class-row { grid-template-columns: auto minmax(0, 1fr) auto auto; }
.student-assignment-panel { margin: 0; }
.student-assignment-card { padding: 18px 0; border-top: 1px solid var(--line); }
.student-assignment-card:first-of-type { border-top: 0; }
.student-assignment-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.student-assignment-top > span { color: var(--primary); font-size: 9px; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.student-assignment-card h3 { margin: 11px 0 6px; font-size: 20px; }
.student-assignment-card p { margin: 0 0 12px; color: var(--muted); font-size: 11px; line-height: 1.6; }
.assignment-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-bottom: 14px; color: var(--muted); font-size: 9px; font-weight: 800; }
.closed-note { display: block; padding: 10px 12px; border-radius: 10px; color: var(--muted); background: var(--surface-soft); font-size: 10px; }
.assignment-context-note { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 13px; margin-bottom: 22px; padding: 15px; border: 1px solid color-mix(in srgb, var(--primary) 28%, var(--line)); border-radius: 15px; background: var(--surface-soft); }
.assignment-context-note > span { display: grid; width: 37px; height: 37px; place-items: center; border-radius: 11px; color: #fff; background: var(--primary); font-weight: 950; }
.assignment-context-note strong, .assignment-context-note p { display: block; }
.assignment-context-note p { margin: 4px 0 0; color: var(--muted); font-size: 10px; }
.assignment-context-note a { color: var(--primary); font-size: 10px; font-weight: 900; text-decoration: none; }
.assignment-student-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.portal-stat-grid .date-stat { font-size: 27px; }
.portal-stat-grid .text-stat { font-size: 20px; }
.assignment-page-list { display: grid; }
.assignment-page-row { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 14px; padding: 16px 0; border-top: 1px solid var(--line); color: var(--ink); text-decoration: none; }
.assignment-page-row:first-child { border-top: 0; }
.assignment-page-row > span { color: var(--primary); font-family: Georgia, serif; font-size: 23px; }
.assignment-page-row strong, .assignment-page-row small { display: block; }
.assignment-page-row small { margin-top: 4px; color: var(--muted); font-size: 9px; }
.assignment-page-row > b { color: var(--primary); font-size: 11px; }

@media (max-width: 960px) {
    .classroom-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .portal-stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .toggle-grid-three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .student-classroom-layout { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
    .portal-hero { padding: 38px 0; }
    .portal-hero-row { align-items: flex-start; flex-direction: column; }
    .portal-hero-row > .button, .portal-actions .button { width: 100%; }
    .portal-actions { width: 100%; }
    .portal-section { padding: 28px 0 68px; }
    .portal-stat-grid { gap: 9px; }
    .portal-stat-grid article { padding: 16px 14px; }
    .portal-stat-grid strong { font-size: 25px; }
    .classroom-grid, .portal-grid-two, .toggle-grid, .toggle-grid-three { grid-template-columns: 1fr; }
    .form-section-card, .portal-card { padding: 21px 17px; border-radius: 18px; }
    .form-actions { flex-direction: column-reverse; }
    .form-actions .button { width: 100%; }
    .member-row { grid-template-columns: auto minmax(0, 1fr); }
    .member-row .row-actions { grid-column: 1 / -1; }
    .student-class-row { grid-template-columns: auto minmax(0, 1fr) auto; }
    .student-class-row form { grid-column: 2 / -1; }
    .join-form-card form { grid-template-columns: 1fr; }
    .join-form-card .button { width: 100%; }
    .assignment-row { grid-template-columns: auto minmax(0, 1fr) auto; }
    .assignment-row .status-badge { grid-column: 2; }
    .assignment-row > b { grid-column: 3; grid-row: 1 / span 2; }
    .assignment-context-note { grid-template-columns: auto minmax(0, 1fr); }
    .assignment-context-note a { grid-column: 2; }
    .assignment-student-stats { grid-template-columns: 1fr 1fr; }
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0b1020;
    --surface: #11172a;
    --surface-soft: #151d35;
    --ink: #f8fafc;
    --muted: #a8b3c7;
    --line: #26314a;
    --primary: #818cf8;
    --primary-deep: #6366f1;
    --violet: #a78bfa;
    --shadow: 0 18px 60px rgba(0, 0, 0, .24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    margin: 0;
    color: var(--ink);
    background: var(--bg);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}

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

.container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.narrow-container { width: min(760px, calc(100% - 40px)); }
.skip-link { position: fixed; z-index: 100; top: -100px; left: 16px; padding: 10px 14px; color: #fff; background: #111827; }
.skip-link:focus { top: 16px; }

.site-header {
    position: sticky;
    z-index: 50;
    top: 0;
    border-bottom: 1px solid color-mix(in srgb, var(--line) 76%, transparent);
    background: color-mix(in srgb, var(--bg) 88%, transparent);
    backdrop-filter: blur(18px);
}

.nav-wrap { display: flex; min-height: 74px; align-items: center; justify-content: space-between; gap: 24px; }
.site-logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.site-logo > span { display: grid; width: 40px; height: 40px; place-items: center; border-radius: 13px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--violet)); font-size: 13px; font-weight: 900; }
.site-logo strong { font-size: 17px; letter-spacing: -.02em; }
.main-nav { display: flex; align-items: center; gap: 28px; }
.main-nav a, .text-link { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 700; }
.main-nav a:hover, .text-link:hover { color: var(--primary); }
.nav-actions { display: flex; align-items: center; gap: 14px; }
.theme-toggle { display: grid; width: 38px; height: 38px; place-items: center; border: 1px solid var(--line); border-radius: 12px; color: var(--ink); cursor: pointer; background: var(--surface); }

.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; gap: 10px; padding: 12px 20px; border: 1px solid transparent; border-radius: 14px; text-decoration: none; cursor: pointer; font-weight: 850; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.button:hover { transform: translateY(-1px); }
.button-primary { color: #fff; background: linear-gradient(135deg, #4f46e5, #7c3aed); box-shadow: 0 12px 28px rgba(79, 70, 229, .24); }
.button-outline { border-color: var(--line); color: var(--ink); background: var(--surface); }
.button-soft { color: var(--primary); background: var(--surface-soft); }
.button-light { color: #312e81; background: #fff; }
.button-small { min-height: 42px; padding: 9px 15px; border-radius: 12px; font-size: 13px; }
.button.full { width: 100%; }

.hero { overflow: hidden; padding: 90px 0 78px; background: radial-gradient(circle at 86% 18%, rgba(124, 58, 237, .13), transparent 30rem), radial-gradient(circle at 8% 92%, rgba(79, 70, 229, .09), transparent 28rem); }
.hero-grid { display: grid; grid-template-columns: 1.04fr .96fr; align-items: center; gap: 72px; }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; color: var(--primary); font-size: 12px; font-weight: 900; letter-spacing: .14em; }
.eyebrow i { width: 8px; height: 8px; border-radius: 99px; background: #22c55e; box-shadow: 0 0 0 5px rgba(34, 197, 94, .12); }
.hero h1 { margin: 24px 0 22px; font-size: clamp(50px, 6vw, 78px); line-height: .98; letter-spacing: -.06em; }
.hero h1 em { color: var(--violet); font-family: Georgia, serif; font-weight: 500; }
.hero-copy > p { max-width: 610px; margin: 0; color: var(--muted); font-size: 19px; line-height: 1.72; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 24px; color: var(--muted); font-size: 12px; font-weight: 700; }

.hero-visual { position: relative; min-height: 500px; display: grid; place-items: center; }
.visual-glow { position: absolute; width: 420px; height: 420px; border-radius: 50%; background: linear-gradient(135deg, rgba(99, 102, 241, .28), rgba(192, 132, 252, .18)); filter: blur(2px); }
.dashboard-card { position: relative; z-index: 2; width: min(470px, 90%); padding: 25px; border: 1px solid color-mix(in srgb, var(--line) 80%, transparent); border-radius: 26px; background: color-mix(in srgb, var(--surface) 90%, transparent); box-shadow: 0 32px 80px rgba(49, 46, 129, .19); backdrop-filter: blur(18px); transform: rotate(1.5deg); }
.mock-header, .mock-header > div { display: flex; align-items: center; justify-content: space-between; gap: 9px; }
.mock-header { padding-bottom: 20px; border-bottom: 1px solid var(--line); }
.mock-dot { width: 11px; height: 11px; border-radius: 50%; }
.mock-dot.violet { background: var(--violet); }
.mock-chip { padding: 6px 9px; border-radius: 999px; color: var(--primary); background: var(--surface-soft); font-size: 11px; font-weight: 850; }
.progress-block { display: grid; grid-template-columns: 116px 1fr; align-items: center; gap: 22px; margin: 25px 0; }
.progress-ring { display: grid; width: 108px; height: 108px; place-items: center; border-radius: 50%; background: conic-gradient(var(--primary) 0 68%, var(--line) 68%); }
.progress-ring::before { content: ""; position: absolute; width: 82px; height: 82px; border-radius: 50%; background: var(--surface); }
.progress-ring span { position: relative; z-index: 1; font-size: 22px; font-weight: 900; }
.progress-block small, .progress-block strong, .progress-block p { display: block; }
.progress-block small, .mock-lessons small { color: var(--muted); }
.progress-block strong { margin: 5px 0; font-size: 18px; }
.progress-block p { margin: 0; color: var(--muted); font-size: 13px; }
.mock-lessons { display: grid; gap: 10px; }
.mock-lessons > div { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--line); border-radius: 14px; }
.lesson-icon { display: grid; width: 40px; height: 40px; place-items: center; border-radius: 12px; font-weight: 900; }
.lesson-icon.blue { color: #1d4ed8; background: #dbeafe; }
.lesson-icon.green { color: #047857; background: #d1fae5; }
.mock-lessons strong, .mock-lessons small { display: block; }
.mock-lessons b { font-size: 12px; }
.floating-card { position: absolute; z-index: 3; display: flex; align-items: center; gap: 9px; padding: 12px 14px; border: 1px solid rgba(255,255,255,.55); border-radius: 14px; background: color-mix(in srgb, var(--surface) 88%, transparent); box-shadow: var(--shadow); backdrop-filter: blur(16px); font-size: 12px; }
.floating-card.top { top: 56px; right: -8px; }
.floating-card.bottom { bottom: 64px; left: -6px; }

.section { padding: 100px 0; }
.section-soft { background: var(--surface-soft); }
.section-heading { display: grid; grid-template-columns: 1.2fr .8fr; align-items: end; gap: 60px; margin-bottom: 42px; }
.section-heading h2, .center-heading h2, .teacher-section h2, .cta-card h2 { margin: 12px 0 0; font-size: clamp(36px, 4vw, 52px); line-height: 1.08; letter-spacing: -.045em; }
.section-heading > p { margin: 0; color: var(--muted); line-height: 1.75; }
.stage-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.stage-card { position: relative; overflow: hidden; padding: 28px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); box-shadow: 0 10px 38px rgba(30,41,59,.06); }
.stage-number { position: absolute; top: 18px; right: 22px; color: color-mix(in srgb, var(--muted) 40%, transparent); font-size: 34px; font-weight: 950; }
.stage-icon { display: grid; width: 54px; height: 54px; place-items: center; border-radius: 17px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--violet)); font-weight: 950; }
.stage-card h3 { margin: 24px 0 8px; font-size: 23px; }
.stage-card p { margin: 0; color: var(--muted); }
.stage-link { display: block; margin-top: 26px; color: var(--primary); font-size: 13px; font-weight: 850; }

.center-heading { max-width: 780px; margin: 0 auto 52px; text-align: center; }
.steps-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.steps-grid article { padding: 30px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); }
.steps-grid article > span { color: var(--primary); font-family: Georgia, serif; font-size: 30px; }
.steps-grid h3 { margin: 25px 0 10px; font-size: 20px; }
.steps-grid p { margin: 0; color: var(--muted); line-height: 1.7; }

.skill-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 15px; }
.skill-card { padding: 24px; border: 1px solid var(--line); border-radius: 19px; background: var(--surface); }
.skill-card > span { display: grid; width: 42px; height: 42px; place-items: center; border-radius: 13px; color: #fff; background: var(--skill-color); font-weight: 900; }
.skill-card h3 { margin: 20px 0 8px; }
.skill-card p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.65; }

.teacher-section { color: #fff; background: linear-gradient(145deg, #111633, #312e81 55%, #6d28d9); }
.eyebrow.light { color: #c7d2fe; }
.teacher-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 72px; align-items: center; }
.teacher-grid > div:first-child > p { margin: 22px 0 30px; color: #dbeafe; line-height: 1.8; }
.teacher-feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.teacher-feature-grid article { padding: 24px; border: 1px solid rgba(255,255,255,.16); border-radius: 18px; background: rgba(255,255,255,.08); }
.teacher-feature-grid span { color: #c4b5fd; font-family: Georgia, serif; font-size: 21px; }
.teacher-feature-grid strong { display: block; margin: 18px 0 7px; }
.teacher-feature-grid p { margin: 0; color: #cbd5e1; font-size: 13px; line-height: 1.6; }
.cta-section { padding-top: 80px; }
.cta-card { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding: 52px; border-radius: 26px; color: #fff; background: linear-gradient(135deg, #4f46e5, #7c3aed); box-shadow: 0 22px 60px rgba(79,70,229,.24); }

.auth-section, .dashboard-section { min-height: 70vh; padding: 72px 0 100px; background: radial-gradient(circle at 15% 12%, rgba(99,102,241,.12), transparent 30rem), var(--surface-soft); }
.auth-card { width: min(520px, calc(100% - 40px)); margin: auto; padding: 38px; border: 1px solid var(--line); border-radius: 24px; background: var(--surface); box-shadow: var(--shadow); }
.auth-card-wide { width: min(760px, calc(100% - 40px)); }
.auth-heading h1, .dashboard-top h1, .application-card h1 { margin: 10px 0; font-size: 36px; letter-spacing: -.04em; }
.auth-heading p, .dashboard-top p, .application-card > p { margin: 0; color: var(--muted); line-height: 1.7; }
.auth-form, .application-form { display: grid; gap: 17px; margin-top: 28px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.auth-form label, .application-form label { display: grid; gap: 8px; color: var(--ink); font-size: 13px; font-weight: 800; }
.auth-form input, .application-form textarea { width: 100%; min-height: 48px; padding: 11px 13px; border: 1px solid var(--line); border-radius: 12px; outline: none; color: var(--ink); background: var(--bg); }
.auth-form input:focus, .application-form textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 14%, transparent); }
.checkbox-row { display: flex !important; grid-template-columns: auto 1fr; align-items: center; gap: 9px !important; }
.checkbox-row input { width: 18px; min-height: 18px; }
.terms-row { align-items: flex-start; line-height: 1.55; }
.field-help { margin: -7px 0 0; color: var(--muted); font-size: 12px; }
.auth-switch { margin: 24px 0 0; color: var(--muted); text-align: center; font-size: 13px; }
.auth-switch a { color: var(--primary); font-weight: 850; }
.form-errors { margin-top: 20px; padding: 13px 15px; border: 1px solid #fecaca; border-radius: 12px; color: #991b1b; background: #fff1f2; font-size: 13px; }
.form-errors p { margin: 3px 0; }

.dashboard-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 34px; }
.dashboard-grid { display: grid; grid-template-columns: 1fr 300px; gap: 18px; }
.dashboard-main-card, .account-card, .quick-card, .application-card { border: 1px solid var(--line); background: var(--surface); box-shadow: 0 12px 40px rgba(30,41,59,.06); }
.dashboard-main-card { padding: 34px; border-radius: 22px; }
.card-kicker { color: var(--primary); font-size: 11px; font-weight: 900; letter-spacing: .14em; }
.dashboard-main-card h2 { margin: 15px 0 9px; }
.dashboard-main-card p { margin: 0; color: var(--muted); line-height: 1.7; }
.empty-progress { height: 9px; margin-top: 28px; border-radius: 99px; background: var(--line); }
.empty-progress span { display: block; width: 18%; height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--primary), var(--violet)); }
.account-card { display: flex; align-items: center; gap: 13px; padding: 24px; border-radius: 22px; }
.avatar { display: grid; width: 52px; height: 52px; place-items: center; border-radius: 17px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--violet)); font-weight: 900; }
.account-card strong, .account-card small { display: block; }
.account-card small { margin-top: 5px; color: var(--muted); overflow-wrap: anywhere; }
.quick-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 18px; }
.quick-card { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 15px; padding: 24px; border-radius: 19px; text-decoration: none; }
.quick-card > span { display: grid; width: 44px; height: 44px; place-items: center; border-radius: 14px; color: var(--primary); background: var(--surface-soft); font-weight: 900; }
.quick-card strong, .quick-card p { display: block; }
.quick-card p { margin: 5px 0 0; color: var(--muted); font-size: 13px; line-height: 1.5; }
.quick-card b { color: var(--primary); }
.quick-card.muted { opacity: .76; }
.flash { margin-top: 18px; padding: 13px 16px; border: 1px solid #a7f3d0; border-radius: 13px; color: #065f46; background: #ecfdf5; }

.back-link { display: inline-block; margin-bottom: 18px; color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 800; }
.application-card { padding: 40px; border-radius: 24px; }
.application-status { display: grid; grid-template-columns: auto 1fr; gap: 14px; margin-top: 25px; padding: 17px; border-radius: 15px; }
.application-status > span { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 11px; font-weight: 900; }
.application-status p { margin: 5px 0 0; line-height: 1.55; font-size: 13px; }
.status-pending { color: #854d0e; background: #fef9c3; }
.status-pending > span { background: #fde047; }
.status-approved { color: #065f46; background: #d1fae5; }
.status-approved > span { color: #fff; background: #10b981; }
.status-rejected { color: #991b1b; background: #fee2e2; }
.status-rejected > span { color: #fff; background: #ef4444; }
.upload-zone { position: relative; place-items: center; padding: 30px; border: 2px dashed var(--line); border-radius: 17px; text-align: center; cursor: pointer; background: var(--surface-soft); }
.upload-zone input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.upload-icon { display: grid; width: 45px; height: 45px; place-items: center; margin-bottom: 6px; border-radius: 14px; color: #fff; background: linear-gradient(135deg, var(--primary), var(--violet)); font-size: 20px; }
.upload-zone small { color: var(--muted); font-weight: 600; }

.site-footer { padding: 70px 0 28px; border-top: 1px solid var(--line); background: var(--surface-soft); }
.footer-grid { display: grid; grid-template-columns: 1.5fr .7fr .7fr; gap: 50px; }
.footer-logo { margin-bottom: 15px; }
.footer-grid p { max-width: 430px; color: var(--muted); line-height: 1.7; }
.footer-grid > div:not(:first-child) { display: grid; align-content: start; gap: 12px; }
.footer-grid a:not(.site-logo) { color: var(--muted); text-decoration: none; font-size: 13px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 50px; padding-top: 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }

/* Student content and activity experience */
.catalog-hero, .lesson-hero {
    padding: 54px 0 52px;
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(circle at 82% 18%, rgba(124, 58, 237, .12), transparent 26rem),
        radial-gradient(circle at 8% 88%, rgba(79, 70, 229, .09), transparent 24rem),
        var(--surface-soft);
}

.breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin-bottom: 30px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 750;
}

.breadcrumbs a { color: var(--muted); text-decoration: none; }
.breadcrumbs a:hover { color: var(--primary); }
.breadcrumbs span[aria-current="page"] { color: var(--ink); }
.catalog-hero h1, .lesson-hero h1 { max-width: 860px; margin: 15px 0 12px; font-size: clamp(40px, 6vw, 66px); line-height: 1.03; letter-spacing: -.055em; }
.catalog-hero .container > p, .lesson-heading > div:first-child > p { max-width: 760px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.75; }

.catalog-section { min-height: 44vh; padding: 62px 0 100px; }
.catalog-grid, .skill-path-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.catalog-card, .skill-path-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
    min-height: 190px;
    padding: 26px;
    border: 1px solid var(--line);
    border-radius: 22px;
    color: var(--ink);
    background: var(--surface);
    box-shadow: 0 12px 42px rgba(30, 41, 59, .06);
    text-decoration: none;
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.catalog-card:hover, .skill-path-card:hover, .lesson-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--primary) 42%, var(--line));
    box-shadow: 0 20px 52px rgba(49, 46, 129, .12);
}

.catalog-card-badge, .skill-path-card > span {
    display: grid;
    width: 56px;
    height: 56px;
    place-items: center;
    border-radius: 17px;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--violet));
    font-size: 17px;
    font-weight: 950;
}

.skill-path-card > span { background: var(--skill-accent); }
.catalog-card h2, .skill-path-card h2 { margin: 0 0 8px; font-size: 23px; letter-spacing: -.025em; }
.catalog-card p, .skill-path-card p { margin: 0 0 14px; color: var(--muted); font-size: 13px; line-height: 1.65; }
.catalog-card small, .skill-path-card small { color: var(--primary); font-size: 11px; font-weight: 850; text-transform: uppercase; letter-spacing: .08em; }
.catalog-card > b, .skill-path-card > b { color: var(--primary); font-size: 22px; }

.catalog-empty {
    display: grid;
    max-width: 680px;
    justify-items: center;
    margin: 18px auto;
    padding: 56px 32px;
    border: 1px dashed var(--line);
    border-radius: 24px;
    background: var(--surface-soft);
    text-align: center;
}

.catalog-empty > span { display: grid; width: 54px; height: 54px; place-items: center; border-radius: 17px; color: var(--primary); background: var(--surface); font-size: 22px; }
.catalog-empty h2 { margin: 20px 0 8px; }
.catalog-empty p { max-width: 480px; margin: 0 0 24px; color: var(--muted); line-height: 1.7; }

.lesson-list { display: grid; gap: 15px; }
.lesson-card {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr) auto;
    align-items: center;
    gap: 24px;
    padding: 25px 28px;
    border: 1px solid var(--line);
    border-radius: 21px;
    color: var(--ink);
    background: var(--surface);
    text-decoration: none;
    transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.lesson-card-order { color: color-mix(in srgb, var(--primary) 55%, var(--muted)); font-family: Georgia, serif; font-size: 34px; }
.lesson-card h2 { margin: 8px 0 6px; font-size: 22px; }
.lesson-card p { margin: 0; color: var(--muted); line-height: 1.6; }
.lesson-card > b { color: var(--primary); font-size: 13px; white-space: nowrap; }
.lesson-card-tags { display: flex; flex-wrap: wrap; gap: 7px; }
.lesson-card-tags span, .lesson-facts span { border: 1px solid var(--line); border-radius: 999px; background: var(--surface-soft); }
.lesson-card-tags span { padding: 5px 8px; color: var(--muted); font-size: 10px; font-weight: 800; }

.lesson-heading { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 44px; }
.lesson-facts { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 9px; }
.lesson-facts span { display: grid; min-width: 88px; gap: 3px; padding: 11px 14px; border-radius: 14px; }
.lesson-facts small { color: var(--muted); font-size: 9px; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.lesson-facts strong { font-size: 13px; }

.lesson-section { padding: 64px 0 78px; }
.lesson-layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; align-items: start; gap: 30px; }
.learning-content {
    min-width: 0;
    padding: 38px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: var(--surface);
    box-shadow: 0 14px 48px rgba(30, 41, 59, .06);
}

.student-note { display: grid; grid-template-columns: auto 1fr; gap: 14px; margin-bottom: 30px; padding: 17px; border: 1px solid color-mix(in srgb, var(--primary) 25%, var(--line)); border-radius: 16px; background: var(--surface-soft); }
.student-note > span { display: grid; width: 31px; height: 31px; place-items: center; border-radius: 10px; color: #fff; background: var(--primary); font-family: Georgia, serif; font-weight: 900; }
.student-note strong { font-size: 13px; }
.student-note p { margin: 5px 0 0; color: var(--muted); font-size: 13px; line-height: 1.6; }
.rich-learning-content { color: var(--ink); font-size: 16px; line-height: 1.85; overflow-wrap: anywhere; }
.rich-learning-content h2, .rich-learning-content h3 { margin: 1.55em 0 .55em; line-height: 1.25; letter-spacing: -.025em; }
.rich-learning-content h2:first-child, .rich-learning-content h3:first-child { margin-top: 0; }
.rich-learning-content p { margin: 0 0 1.15em; }
.rich-learning-content ul, .rich-learning-content ol { padding-left: 24px; }
.rich-learning-content blockquote { margin: 24px 0; padding: 16px 20px; border-left: 4px solid var(--primary); border-radius: 0 14px 14px 0; color: var(--muted); background: var(--surface-soft); }
.rich-learning-content table { width: 100%; border-collapse: collapse; }
.rich-learning-content th, .rich-learning-content td { padding: 11px; border: 1px solid var(--line); text-align: left; }

.lesson-sidebar { position: sticky; top: 98px; display: grid; gap: 7px; padding: 22px; border: 1px solid var(--line); border-radius: 19px; background: var(--surface-soft); }
.lesson-sidebar strong { margin-bottom: 7px; font-size: 13px; }
.lesson-sidebar a { padding: 9px 10px; border-radius: 10px; color: var(--muted); text-decoration: none; font-size: 12px; font-weight: 750; }
.lesson-sidebar a:hover { color: var(--primary); background: var(--surface); }

.activity-section { padding: 80px 0 110px; background: var(--surface-soft); }
.activity-heading { max-width: 760px; margin-bottom: 36px; }
.activity-heading h2 { margin: 12px 0 8px; font-size: clamp(34px, 4vw, 48px); letter-spacing: -.045em; }
.activity-heading p { margin: 0; color: var(--muted); line-height: 1.7; }
.activity-card { margin-top: 22px; overflow: hidden; border: 1px solid var(--line); border-radius: 25px; background: var(--surface); box-shadow: 0 16px 52px rgba(30, 41, 59, .07); }
.activity-card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 22px; padding: 30px 34px; border-bottom: 1px solid var(--line); }
.activity-card-header > div > span { color: var(--primary); font-size: 10px; font-weight: 950; letter-spacing: .13em; }
.activity-card-header h3 { margin: 9px 0 6px; font-size: 25px; letter-spacing: -.025em; }
.activity-card-header p { margin: 0; color: var(--muted); line-height: 1.65; }
.activity-card-header > small { flex: 0 0 auto; padding: 7px 10px; border-radius: 999px; color: var(--primary); background: var(--surface-soft); font-weight: 850; }
.quiz-form { display: grid; gap: 18px; padding: 30px 34px 36px; }

.question-card { min-width: 0; margin: 0; padding: 24px; border: 1px solid var(--line); border-radius: 18px; background: var(--bg); transition: border-color .2s ease, background .2s ease; }
.question-card.is-correct { border-color: #86efac; background: color-mix(in srgb, #ecfdf5 74%, var(--surface)); }
.question-card.is-incorrect { border-color: #fca5a5; background: color-mix(in srgb, #fff1f2 76%, var(--surface)); }
.question-card.is-ungraded { border-color: #fde68a; background: color-mix(in srgb, #fffbeb 76%, var(--surface)); }
.question-card legend { display: flex; align-items: center; gap: 9px; padding: 0 8px; color: var(--primary); font-size: 11px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.question-card legend small { padding: 3px 6px; border-radius: 999px; color: var(--muted); background: var(--surface-soft); font-size: 9px; letter-spacing: 0; }
.question-prompt { margin: 2px 0 18px; font-size: 17px; font-weight: 750; line-height: 1.55; white-space: pre-wrap; }
.choice-list { display: grid; gap: 9px; }
.choice-option { display: grid; grid-template-columns: auto auto minmax(0, 1fr); align-items: center; gap: 11px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 13px; cursor: pointer; background: var(--surface); transition: border-color .15s ease, background .15s ease; }
.choice-option:hover { border-color: color-mix(in srgb, var(--primary) 45%, var(--line)); background: var(--surface-soft); }
.choice-option:has(input:checked) { border-color: var(--primary); background: color-mix(in srgb, var(--primary) 8%, var(--surface)); }
.choice-option input { width: 17px; height: 17px; accent-color: var(--primary); }
.choice-marker { display: grid; width: 28px; height: 28px; place-items: center; border-radius: 9px; color: var(--primary); background: var(--surface-soft); font-size: 11px; font-weight: 900; }
.text-answer { display: grid; gap: 8px; }
.text-answer > span, .matching-grid label > span, .ordering-grid label > span { color: var(--muted); font-size: 11px; font-weight: 850; }
.text-answer input, .text-answer textarea, .matching-grid select, .ordering-grid select {
    width: 100%;
    padding: 12px 13px;
    border: 1px solid var(--line);
    border-radius: 12px;
    outline: none;
    color: var(--ink);
    background: var(--surface);
}

.text-answer input:focus, .text-answer textarea:focus, .matching-grid select:focus, .ordering-grid select:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 13%, transparent); }
.matching-grid, .ordering-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.matching-grid label, .ordering-grid label { display: grid; gap: 7px; }
.question-feedback { display: grid; gap: 4px; margin-top: 15px; padding: 12px 14px; border-radius: 12px; font-size: 12px; line-height: 1.55; }
.question-feedback.is-correct { color: #065f46; background: #d1fae5; }
.question-feedback.is-incorrect { color: #991b1b; background: #fee2e2; }
.question-feedback.is-ungraded { color: #854d0e; background: #fef3c7; }
.question-feedback strong { font-size: 13px; }
.quiz-result { display: none; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; padding: 18px; border: 1px solid color-mix(in srgb, var(--primary) 28%, var(--line)); border-radius: 15px; background: var(--surface-soft); }
.quiz-result.is-visible { display: grid; }
.quiz-result strong { display: grid; width: 58px; height: 58px; place-items: center; border-radius: 50%; color: #fff; background: linear-gradient(135deg, var(--primary), var(--violet)); }
.quiz-result span { font-size: 17px; font-weight: 900; }
.quiz-result small { color: var(--muted); font-weight: 750; }
.quiz-submit { justify-self: start; }
.quiz-submit:disabled { opacity: .66; cursor: wait; transform: none; }
.quiz-error { margin: 0; padding: 12px 14px; border-radius: 12px; color: #991b1b; background: #fee2e2; font-size: 12px; }
.activity-empty { margin: 28px 34px 34px; padding: 18px; border-radius: 14px; color: var(--muted); background: var(--surface-soft); text-align: center; }

@media (max-width: 960px) {
    .main-nav { display: none; }
    .hero-grid, .teacher-grid { grid-template-columns: 1fr; }
    .hero { padding-top: 68px; }
    .hero-visual { min-height: 460px; }
    .section-heading { grid-template-columns: 1fr; gap: 20px; }
    .skill-grid { grid-template-columns: repeat(2, 1fr); }
    .dashboard-grid { grid-template-columns: 1fr; }
    .lesson-heading, .lesson-layout { grid-template-columns: 1fr; }
    .lesson-facts { justify-content: flex-start; }
    .lesson-sidebar { position: static; }
}

@media (max-width: 680px) {
    .container, .narrow-container { width: min(100% - 28px, 1160px); }
    .nav-wrap { min-height: 66px; }
    .site-logo strong, .nav-actions .text-link { display: none; }
    .hero { padding: 54px 0 46px; }
    .hero h1 { font-size: 47px; }
    .hero-copy > p { font-size: 16px; }
    .hero-actions .button { width: 100%; }
    .hero-visual { min-height: 390px; margin-inline: -10px; }
    .visual-glow { width: 300px; height: 300px; }
    .dashboard-card { width: 96%; padding: 17px; }
    .progress-block { grid-template-columns: 90px 1fr; gap: 14px; }
    .progress-ring { width: 84px; height: 84px; }
    .progress-ring::before { width: 64px; height: 64px; }
    .floating-card.top { top: 8px; right: 0; }
    .floating-card.bottom { bottom: 12px; left: 0; }
    .section { padding: 72px 0; }
    .section-heading h2, .center-heading h2, .teacher-section h2, .cta-card h2 { font-size: 36px; }
    .stage-grid, .steps-grid, .skill-grid, .teacher-feature-grid, .quick-grid, .form-grid, .footer-grid { grid-template-columns: 1fr; }
    .cta-card { align-items: flex-start; flex-direction: column; padding: 34px 24px; }
    .cta-card .button { width: 100%; }
    .auth-section, .dashboard-section { padding: 42px 0 70px; }
    .auth-card, .auth-card-wide { width: calc(100% - 28px); padding: 25px 20px; }
    .dashboard-top { flex-direction: column; }
    .application-card { padding: 27px 20px; }
    .footer-bottom { flex-direction: column; }
    .catalog-hero, .lesson-hero { padding: 38px 0 40px; }
    .breadcrumbs { margin-bottom: 22px; }
    .catalog-hero h1, .lesson-hero h1 { font-size: 39px; }
    .catalog-section { padding: 38px 0 72px; }
    .catalog-grid, .skill-path-grid { grid-template-columns: 1fr; }
    .catalog-card, .skill-path-card { grid-template-columns: auto minmax(0, 1fr); min-height: 0; padding: 20px; }
    .catalog-card > b, .skill-path-card > b { display: none; }
    .catalog-card-badge, .skill-path-card > span { width: 48px; height: 48px; border-radius: 14px; }
    .lesson-card { grid-template-columns: 52px minmax(0, 1fr); gap: 14px; padding: 20px; }
    .lesson-card > b { display: none; }
    .lesson-card-order { font-size: 27px; }
    .lesson-section { padding: 38px 0 52px; }
    .learning-content { padding: 23px 19px; border-radius: 19px; }
    .activity-section { padding: 58px 0 78px; }
    .activity-card-header { padding: 24px 20px; }
    .quiz-form { padding: 22px 16px 26px; }
    .question-card { padding: 19px 15px; }
    .matching-grid, .ordering-grid { grid-template-columns: 1fr; }
    .quiz-result { grid-template-columns: auto 1fr; }
    .quiz-result small { grid-column: 2; }
    .quiz-submit { width: 100%; }
}

/* Student progress, reports and spiral review */
.progress-stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 18px;
}

.progress-stat-grid article {
    display: grid;
    gap: 7px;
    padding: 22px;
    border: 1px solid var(--line);
    border-radius: 19px;
    background: var(--surface);
    box-shadow: 0 10px 34px rgba(30, 41, 59, .05);
}

.progress-stat-grid article.is-alert {
    border-color: color-mix(in srgb, #f59e0b 45%, var(--line));
    background: color-mix(in srgb, #fffbeb 72%, var(--surface));
}

.progress-stat-grid span {
    color: var(--muted);
    font-size: 11px;
    font-weight: 850;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.progress-stat-grid strong { font-size: 30px; letter-spacing: -.04em; }
.progress-stat-grid small { color: var(--muted); font-size: 11px; }
.progress-dashboard-grid { grid-template-columns: minmax(0, 1fr) 290px; }
.continue-card { min-height: 225px; }
.continue-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-top: 14px; }
.continue-heading h2 { margin: 0 0 7px; font-size: 27px; }
.continue-heading p { margin: 0; }
.continue-heading > strong {
    flex: 0 0 auto;
    display: grid;
    width: 70px;
    height: 70px;
    place-items: center;
    border-radius: 50%;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--violet));
    font-size: 18px;
}

.mastery-bar, .compact-progress {
    overflow: hidden;
    border-radius: 999px;
    background: var(--line);
}

.mastery-bar { height: 10px; margin-top: 28px; }
.mastery-bar span, .compact-progress span {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), var(--violet));
}

.continue-actions { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 20px; }
.continue-actions small { color: var(--muted); font-weight: 750; }
.dashboard-start { margin-top: 22px; }
.account-card-stacked { align-items: flex-start; }
.account-card-stacked em {
    display: inline-block;
    margin-top: 10px;
    padding: 5px 8px;
    border-radius: 999px;
    color: var(--primary);
    background: var(--surface-soft);
    font-size: 10px;
    font-style: normal;
    font-weight: 850;
}

.review-callout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    margin-top: 18px;
    padding: 28px 32px;
    border-radius: 22px;
    color: #fff;
    background: linear-gradient(135deg, #312e81, #6d28d9);
    box-shadow: 0 18px 48px rgba(79, 70, 229, .2);
}

.review-callout.is-calm {
    border: 1px solid var(--line);
    color: var(--ink);
    background: var(--surface);
    box-shadow: 0 12px 40px rgba(30, 41, 59, .06);
}

.review-callout .card-kicker { color: #c7d2fe; }
.review-callout.is-calm .card-kicker { color: var(--primary); }
.review-callout h2 { margin: 9px 0 5px; font-size: 23px; }
.review-callout p { margin: 0; color: #ddd6fe; line-height: 1.6; }
.review-callout.is-calm p { color: var(--muted); }
.lesson-facts span.is-complete { border-color: #86efac; background: color-mix(in srgb, #ecfdf5 75%, var(--surface)); }
.tracking-note { display: block; margin-top: 12px; color: var(--muted); font-weight: 700; }
.tracking-note a { color: var(--primary); }

.report-hero {
    padding: 58px 0 60px;
    border-bottom: 1px solid var(--line);
    background:
        radial-gradient(circle at 82% 18%, rgba(124, 58, 237, .13), transparent 28rem),
        var(--surface-soft);
}

.report-hero .back-link { display: block; }
.report-hero h1 { margin: 14px 0 10px; font-size: clamp(42px, 6vw, 68px); line-height: 1.03; letter-spacing: -.055em; }
.report-hero p { max-width: 720px; margin: 0; color: var(--muted); font-size: 17px; line-height: 1.7; }
.review-hero { background: radial-gradient(circle at 72% 20%, rgba(99, 102, 241, .22), transparent 32rem), var(--surface-soft); }
.report-section { min-height: 54vh; padding: 54px 0 100px; background: var(--surface-soft); }
.report-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; margin-top: 18px; }
.report-card {
    padding: 28px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--surface);
    box-shadow: 0 12px 40px rgba(30, 41, 59, .05);
}

.report-card-wide { margin-top: 18px; }
.report-card-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 20px; }
.report-card-heading h2 { margin: 8px 0 0; font-size: 23px; }
.report-card-heading > a { color: var(--primary); text-decoration: none; font-size: 12px; font-weight: 850; }
.skill-progress-row, .review-row, .progress-list-row, .mistake-row, .attempt-row {
    color: var(--ink);
    text-decoration: none;
}

.skill-progress-row {
    display: grid;
    grid-template-columns: minmax(120px, 1fr) minmax(90px, 1fr) auto;
    align-items: center;
    gap: 14px;
    padding: 13px 0;
    border-top: 1px solid var(--line);
}

.skill-progress-row:first-of-type { border-top: 0; }
.skill-progress-row strong, .skill-progress-row small { display: block; }
.skill-progress-row small { margin-top: 4px; color: var(--muted); font-size: 10px; }
.skill-progress-row b { color: var(--primary); font-size: 13px; }
.compact-progress { height: 7px; }
.review-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-top: 1px solid var(--line);
}

.review-row:first-of-type { border-top: 0; }
.review-row > span {
    display: grid;
    width: 38px;
    height: 38px;
    place-items: center;
    border-radius: 12px;
    color: var(--primary);
    background: var(--surface-soft);
    font-weight: 900;
}

.review-row strong, .review-row small { display: block; }
.review-row small { margin-top: 3px; color: var(--muted); font-size: 10px; }
.review-row b { color: var(--primary); }
.progress-list { display: grid; }
.progress-list-row {
    display: grid;
    grid-template-columns: auto minmax(220px, 1.3fr) minmax(100px, .7fr) 70px;
    align-items: center;
    gap: 15px;
    padding: 15px 0;
    border-top: 1px solid var(--line);
}

.progress-list-row:first-child { border-top: 0; }
.status-dot { width: 11px; height: 11px; border: 2px solid var(--primary); border-radius: 50%; }
.status-dot.is-complete { border-color: #10b981; background: #10b981; box-shadow: 0 0 0 5px rgba(16, 185, 129, .1); }
.progress-list-row strong, .progress-list-row small { display: block; }
.progress-list-row small { margin-top: 4px; color: var(--muted); font-size: 10px; }
.progress-list-row > b { color: var(--primary); text-align: right; font-size: 12px; }
.mistake-row {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 12px;
    padding: 14px 0;
    border-top: 1px solid var(--line);
}

.mistake-row:first-of-type { border-top: 0; }
.mistake-row > span { display: grid; width: 32px; height: 32px; place-items: center; border-radius: 10px; color: #b45309; background: #fef3c7; font-weight: 950; }
.mistake-row strong, .mistake-row small { display: block; }
.mistake-row small { margin-top: 5px; color: var(--muted); font-size: 10px; }
.mistake-row p { margin: 7px 0 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.attempt-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; border-top: 1px solid var(--line); }
.attempt-row:first-of-type { border-top: 0; }
.attempt-row strong, .attempt-row small { display: block; }
.attempt-row small { margin-top: 4px; color: var(--muted); font-size: 10px; }
.attempt-row b { color: var(--primary); }
.report-empty { padding: 24px; border: 1px dashed var(--line); border-radius: 16px; color: var(--muted); background: var(--surface-soft); text-align: center; }
.report-empty strong { color: var(--ink); }
.report-empty p { margin: 7px 0 0; font-size: 12px; line-height: 1.6; }
.report-empty .button { margin-top: 16px; }
.narrow-report { width: min(900px, calc(100% - 40px)); }
.review-explainer { display: flex; align-items: center; justify-content: center; gap: 10px; margin-bottom: 40px; color: var(--muted); font-size: 11px; font-weight: 850; }
.review-explainer i { width: clamp(12px, 5vw, 60px); height: 2px; background: var(--line); }
.review-list-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.review-list-heading h2 { margin: 8px 0 0; font-size: 30px; }
.review-list-heading > small { color: var(--muted); }
.review-queue { display: grid; gap: 14px; }
.review-queue-card {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
    padding: 25px;
    border: 1px solid var(--line);
    border-radius: 21px;
    background: var(--surface);
    box-shadow: 0 12px 38px rgba(30, 41, 59, .05);
}

/* Teacher mistake analysis */
.mistake-report-hero { background: radial-gradient(circle at 82% 20%, rgba(245, 158, 11, .15), transparent 28rem), var(--surface-soft); }
.mistake-filter { margin-bottom: 20px; }
.mistake-filter .portal-heading { margin-top: 0; }
.mistake-filter-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 13px; }
.mistake-filter-grid .field { display: grid; gap: 7px; }
.mistake-filter-grid .field > span { color: var(--muted); font-size: 9px; font-weight: 900; letter-spacing: .05em; text-transform: uppercase; }
.mistake-filter-grid input, .mistake-filter-grid select { width: 100%; min-height: 44px; padding: 0 12px; border: 1px solid var(--line); border-radius: 12px; outline: 0; color: var(--ink); background: var(--bg); }
.mistake-filter-grid input:focus, .mistake-filter-grid select:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent); }
.mistake-report-list { display: grid; gap: 15px; }
.teacher-mistake-card { padding: 25px 27px; }
.teacher-mistake-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.mistake-student { display: flex; align-items: center; gap: 11px; }
.mistake-student strong, .mistake-student small { display: block; }
.mistake-student small { margin-top: 3px; color: var(--muted); font-size: 9px; }
.mistake-path { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin: 19px 0 9px; color: var(--muted); font-size: 9px; font-weight: 800; }
.mistake-path i { color: var(--primary); font-style: normal; }
.teacher-mistake-card > h2 { margin: 0 0 17px; font-size: 20px; line-height: 1.4; }
.answer-compare { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 11px; }
.answer-box { display: grid; gap: 6px; padding: 14px 15px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface-soft); }
.answer-box span { color: var(--muted); font-size: 9px; font-weight: 900; letter-spacing: .05em; text-transform: uppercase; }
.answer-box strong { font-size: 12px; line-height: 1.55; overflow-wrap: anywhere; }
.answer-box.is-wrong { border-color: color-mix(in srgb, #f59e0b 42%, var(--line)); background: color-mix(in srgb, #fffbeb 68%, var(--surface)); }
.answer-box.is-correct { border-color: color-mix(in srgb, #10b981 35%, var(--line)); background: color-mix(in srgb, #ecfdf5 68%, var(--surface)); }
.mistake-explanation { margin-top: 11px; padding: 13px 15px; border-left: 3px solid var(--primary); border-radius: 0 12px 12px 0; background: var(--surface-soft); }
.mistake-explanation strong { font-size: 10px; }
.mistake-explanation p { margin: 4px 0 0; color: var(--muted); font-size: 11px; line-height: 1.6; }
.mistake-meta-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)) auto; align-items: center; gap: 16px; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--line); }
.mistake-meta-grid div > span, .mistake-meta-grid div > strong, .mistake-meta-grid div > small { display: block; }
.mistake-meta-grid div > span { color: var(--muted); font-size: 8px; font-weight: 900; letter-spacing: .05em; text-transform: uppercase; }
.mistake-meta-grid div > strong { margin-top: 4px; font-size: 10px; line-height: 1.45; }
.mistake-meta-grid div > small { margin-top: 3px; color: var(--muted); font-size: 8px; line-height: 1.45; }
.mistake-empty { padding: 46px 24px; }
.report-pagination { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 24px; font-size: 11px; }
.report-pagination a, .report-pagination span { min-width: 90px; color: var(--muted); text-align: center; text-decoration: none; }
.report-pagination a { color: var(--primary); font-weight: 850; }
.report-pagination strong { padding: 8px 11px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); }
.mistake-preview-panel .portal-heading { margin-top: 0; }
.mistake-preview-stats { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 6px; }
.mistake-preview-stats span { padding: 7px 10px; border-radius: 999px; color: var(--muted); background: var(--surface-soft); font-size: 9px; }
.mistake-preview-stats b { color: var(--ink); }
.teacher-mistake-preview { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto; align-items: center; gap: 12px; padding: 13px 0; border-top: 1px solid var(--line); color: var(--ink); text-decoration: none; }
.teacher-mistake-preview:first-of-type { margin-top: 8px; }
.teacher-mistake-preview .mistake-mark { display: grid; width: 34px; height: 34px; place-items: center; border-radius: 10px; color: #b45309; background: #fef3c7; font-weight: 950; }
.teacher-mistake-preview strong, .teacher-mistake-preview small { display: block; }
.teacher-mistake-preview strong { font-size: 11px; line-height: 1.45; }
.teacher-mistake-preview small { margin-top: 4px; color: var(--muted); font-size: 9px; line-height: 1.45; }
.teacher-mistake-preview > b { color: var(--primary); }

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

@media (max-width: 680px) {
    .mistake-filter .portal-heading { align-items: flex-start; flex-direction: column; }
    .mistake-filter .portal-heading .button { width: 100%; }
    .mistake-filter-grid, .answer-compare, .mistake-meta-grid { grid-template-columns: 1fr; }
    .teacher-mistake-card { padding: 20px 17px; }
    .teacher-mistake-head { align-items: flex-start; }
    .teacher-mistake-preview { grid-template-columns: auto minmax(0, 1fr) auto; }
    .teacher-mistake-preview .status-badge { grid-column: 2; }
    .teacher-mistake-preview > b { grid-column: 3; grid-row: 1 / span 2; }
    .mistake-meta-grid .button { width: 100%; }
}

.review-stage { padding: 7px 9px; border-radius: 999px; color: var(--primary); background: var(--surface-soft); font-size: 10px; font-weight: 900; }
.review-queue-card small { color: var(--primary); font-weight: 850; }
.review-queue-card h2 { margin: 5px 0; font-size: 21px; }
.review-queue-card p { margin: 0; color: var(--muted); font-size: 12px; line-height: 1.6; }
.review-queue-action { display: grid; justify-items: end; gap: 10px; }
.review-queue-action > strong { color: var(--primary); }
.review-complete {
    display: grid;
    justify-items: center;
    padding: 58px 30px;
    border: 1px solid var(--line);
    border-radius: 25px;
    background: var(--surface);
    text-align: center;
    box-shadow: 0 16px 48px rgba(30, 41, 59, .06);
}

.review-complete > span { display: grid; width: 68px; height: 68px; place-items: center; border-radius: 50%; color: #fff; background: #10b981; font-size: 26px; font-weight: 950; }
.review-complete h2 { margin: 22px 0 8px; font-size: 30px; }
.review-complete p { max-width: 560px; margin: 0 0 24px; color: var(--muted); line-height: 1.7; }

/* Exam and worksheet builder */
.portal-hero-grid { display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; }
.compact-portal-hero { padding: 46px 0 43px; }
.compact-portal-hero h1 { font-size: clamp(34px, 4.4vw, 50px); }
.exam-hero { background: radial-gradient(circle at 86% 30%, rgba(124, 58, 237, .16), transparent 28rem), linear-gradient(145deg, color-mix(in srgb, var(--primary) 8%, var(--bg)), var(--bg)); }
.exam-primary-actions { justify-content: flex-end; }
.pool-count { display: inline-flex; padding: 8px 11px; border-radius: 999px; color: var(--primary); background: var(--surface-soft); font-size: 10px; font-weight: 900; white-space: nowrap; }
.exam-empty .button { margin-top: 13px; }
.exam-filter-form { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 13px; }
.exam-filter-form label, .portal-form-grid label { display: grid; gap: 7px; }
.exam-filter-form label > span, .portal-form-grid label > span { color: var(--muted); font-size: 9px; font-weight: 900; letter-spacing: .05em; text-transform: uppercase; }
.exam-filter-form input, .exam-filter-form select, .portal-form-grid input, .portal-form-grid select, .portal-form-grid textarea { width: 100%; min-height: 44px; padding: 0 12px; border: 1px solid var(--line); border-radius: 12px; outline: 0; color: var(--ink); background: var(--bg); font: inherit; font-size: 11px; }
.portal-form-grid textarea { padding: 12px; resize: vertical; }
.exam-filter-form input:focus, .exam-filter-form select:focus, .portal-form-grid input:focus, .portal-form-grid select:focus, .portal-form-grid textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent); }
.filter-search { grid-column: span 2; }
.filter-actions { display: flex; align-items: end; gap: 9px; }
.filter-actions .button { min-height: 44px; }
.exam-builder-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(310px, .55fr); align-items: start; gap: 20px; }
.pool-heading { align-items: center; margin-top: 0; }
.random-picker { display: flex; gap: 7px; }
.random-picker input { width: 68px; min-height: 38px; padding: 0 9px; border: 1px solid var(--line); border-radius: 10px; color: var(--ink); background: var(--bg); }
.section-note { margin: -5px 0 18px; color: var(--muted); font-size: 10px; line-height: 1.6; }
.question-pool { display: grid; gap: 10px; max-height: 920px; padding-right: 4px; overflow: auto; }
.pool-question { position: relative; display: grid; grid-template-columns: auto auto minmax(0, 1fr); align-items: start; gap: 11px; padding: 16px; border: 1px solid var(--line); border-radius: 16px; background: var(--bg); cursor: pointer; transition: border-color .18s ease, background .18s ease, transform .18s ease; }
.pool-question:hover { transform: translateY(-1px); border-color: color-mix(in srgb, var(--primary) 42%, var(--line)); }
.pool-question.is-selected { border-color: color-mix(in srgb, var(--primary) 62%, var(--line)); background: color-mix(in srgb, var(--primary) 5%, var(--surface)); }
.pool-question > input { width: 18px; height: 18px; margin-top: 1px; accent-color: var(--primary); }
.pool-check { display: none; }
.pool-question-body { min-width: 0; }
.pool-question-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin-bottom: 7px; }
.pool-question-meta b, .pool-question-meta i, .pool-question-meta em { padding: 4px 7px; border-radius: 999px; font-size: 8px; font-style: normal; font-weight: 900; }
.pool-question-meta b { color: var(--primary); background: var(--surface-soft); }
.pool-question-meta i { color: #047857; background: #d1fae5; }
.pool-question-meta em { margin-left: auto; color: var(--muted); background: var(--surface-soft); }
.pool-question-body > strong, .pool-question-body > small, .pool-option-preview { display: block; }
.pool-question-body > strong { font-size: 12px; line-height: 1.55; }
.pool-question-body > small { margin-top: 5px; color: var(--muted); font-size: 9px; line-height: 1.5; }
.pool-option-preview { margin-top: 8px; color: var(--muted); font-size: 9px; line-height: 1.55; }
.selected-panel { position: sticky; top: 85px; }
.selected-panel .portal-heading { margin-top: 0; }
.selection-summary { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-bottom: 12px; }
.selection-summary span { padding: 11px; border-radius: 12px; background: var(--surface-soft); color: var(--muted); font-size: 9px; text-align: center; }
.selection-summary b { display: block; margin-bottom: 3px; color: var(--primary); font-size: 21px; }
.selected-question-list { display: grid; gap: 8px; max-height: 660px; overflow: auto; }
.compact-empty { padding: 28px 12px; }
.selected-question-item { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 9px; padding: 11px; border: 1px solid var(--line); border-radius: 13px; background: var(--bg); }
.selected-order { display: grid; width: 27px; height: 27px; place-items: center; border-radius: 8px; color: #fff; background: var(--primary); font-size: 9px; font-weight: 950; }
.selected-question-item strong { display: -webkit-box; overflow: hidden; font-size: 10px; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.selected-question-item label { display: flex; align-items: center; gap: 6px; margin-top: 7px; color: var(--muted); font-size: 8px; font-weight: 850; }
.selected-question-item label input { width: 58px; min-height: 28px; padding: 0 7px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink); background: var(--surface); }
.selected-actions { display: grid; align-content: start; gap: 3px; }
.selected-actions button { display: grid; width: 25px; height: 24px; place-items: center; border: 0; border-radius: 7px; color: var(--muted); background: var(--surface-soft); cursor: pointer; font-weight: 900; }
.selected-actions button:hover { color: var(--primary); }
.exam-details-panel { margin-top: 20px; }
.exam-details-panel > .portal-heading { margin-top: 0; }
.portal-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.full-field { grid-column: 1 / -1; }
.checkbox-field { display: flex !important; grid-template-columns: auto 1fr; align-items: center; justify-content: flex-start; }
.checkbox-field input { width: 18px; min-height: 18px; accent-color: var(--primary); }
.checkbox-field span { text-transform: none !important; letter-spacing: 0 !important; }
.exam-submit-bar { display: flex; align-items: center; justify-content: space-between; gap: 18px; margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line); }
.exam-submit-bar strong, .exam-submit-bar small { display: block; }
.exam-submit-bar small { margin-top: 4px; color: var(--muted); font-size: 9px; }
.exam-show-grid { display: grid; grid-template-columns: minmax(0, 1fr) 330px; align-items: start; gap: 22px; }
.paper-preview { padding: 42px; border: 1px solid #d1d5db; color: #111827; background: #fff; box-shadow: 0 17px 55px rgba(15, 23, 42, .11); }
.paper-preview-header { display: flex; justify-content: space-between; gap: 24px; padding-bottom: 18px; border-bottom: 2px solid #111827; text-align: center; }
.paper-preview-header > div { flex: 1; }
.paper-preview-header strong, .paper-preview-header span { display: block; font-size: 10px; }
.paper-preview-header h2 { margin: 5px 0; font-family: Georgia, serif; font-size: 24px; }
.paper-preview-header > b { display: grid; width: 48px; height: 48px; place-items: center; border: 2px solid #111827; font-size: 21px; }
.paper-student-fields { display: grid; grid-template-columns: 1.8fr 1fr 1fr; gap: 15px; padding: 16px 0; border-bottom: 1px solid #d1d5db; font-size: 10px; }
.paper-instructions { padding: 10px 12px; border-left: 3px solid #4f46e5; background: #f5f7ff; font-size: 10px; line-height: 1.6; }
.paper-question-preview { break-inside: avoid; padding: 18px 0; border-bottom: 1px solid #e5e7eb; }
.paper-question-title { display: flex; align-items: start; justify-content: space-between; gap: 14px; }
.paper-question-title strong { font-size: 12px; line-height: 1.6; }
.paper-question-title > span { flex: 0 0 auto; font-size: 9px; }
.paper-choice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 20px; margin: 13px 0 0 17px; }
.paper-choice-grid span { display: flex; gap: 8px; font-size: 10px; }
.paper-choice-grid i { display: grid; width: 19px; height: 19px; place-items: center; border: 1px solid #9ca3af; border-radius: 50%; font-size: 8px; font-style: normal; }
.paper-answer-lines { display: grid; gap: 13px; margin-top: 13px; }
.paper-answer-lines span { height: 14px; border-bottom: 1px solid #9ca3af; }
.paper-matching-preview { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 10px; font-size: 10px; }
.paper-matching-preview li { padding: 3px; }
.paper-matching-preview div, .paper-word-bank { padding: 9px; border: 1px dashed #9ca3af; border-radius: 6px; font-size: 9px; }
.paper-answer-key { margin-top: 11px; padding: 9px; border: 1px solid #bbf7d0; border-radius: 7px; background: #f0fdf4; font-size: 9px; }
.paper-answer-key small { display: block; margin-top: 4px; color: #4b5563; }
.exam-side-card { margin-top: 0; margin-bottom: 18px; }
.exam-summary-list { display: grid; margin: 13px 0 0; }
.exam-summary-list div { display: flex; justify-content: space-between; gap: 16px; padding: 11px 0; border-top: 1px solid var(--line); }
.exam-summary-list dt { color: var(--muted); font-size: 10px; }
.exam-summary-list dd { margin: 0; font-size: 10px; font-weight: 850; text-align: right; }
.exam-side-actions { display: grid; gap: 8px; margin-top: 14px; }
.exam-side-actions form, .exam-side-actions button { width: 100%; }
.exam-danger-card { border-color: color-mix(in srgb, #ef4444 30%, var(--line)); }
.exam-danger-card p { font-size: 10px; }
.narrow-portal-container { max-width: 1040px; }
.exam-edit-questions { margin-top: 20px; }
.exam-edit-questions > .portal-heading { margin-top: 0; }
.exam-edit-table input { width: 72px; min-height: 38px; padding: 0 9px; border: 1px solid var(--line); border-radius: 9px; color: var(--ink); background: var(--bg); }

@media (max-width: 1080px) {
    .exam-filter-form { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .exam-builder-grid { grid-template-columns: minmax(0, 1fr) 300px; }
    .exam-show-grid { grid-template-columns: 1fr; }
    .exam-show-grid > aside { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
    .exam-side-card { margin-bottom: 0; }
}

@media (max-width: 780px) {
    .portal-hero-grid { align-items: flex-start; flex-direction: column; }
    .exam-filter-form { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .filter-search { grid-column: span 1; }
    .filter-actions { grid-column: 1 / -1; }
    .exam-builder-grid { grid-template-columns: 1fr; }
    .selected-panel { position: static; }
    .question-pool, .selected-question-list { max-height: none; }
    .exam-show-grid > aside { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
    .exam-filter-form, .portal-form-grid { grid-template-columns: 1fr; }
    .filter-search, .full-field { grid-column: auto; }
    .filter-actions, .exam-primary-actions, .exam-submit-bar { align-items: stretch; flex-direction: column; }
    .filter-actions .button, .exam-primary-actions .button, .exam-submit-bar .button { width: 100%; }
    .pool-heading { align-items: flex-start; flex-direction: column; }
    .random-picker { width: 100%; }
    .random-picker input { flex: 1; }
    .paper-preview { padding: 25px 17px; }
    .paper-preview-header h2 { font-size: 19px; }
    .paper-student-fields, .paper-choice-grid, .paper-matching-preview { grid-template-columns: 1fr; }
    .paper-student-fields { gap: 9px; }
}

@media (max-width: 960px) {
    .progress-stat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .progress-dashboard-grid, .report-grid { grid-template-columns: 1fr; }
    .account-card-stacked { align-items: center; }
}

@media (max-width: 680px) {
    .progress-stat-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .progress-stat-grid article { padding: 17px 15px; }
    .progress-stat-grid strong { font-size: 25px; }
    .continue-heading, .continue-actions, .review-callout, .review-list-heading { align-items: flex-start; flex-direction: column; }
    .continue-heading > strong { width: 58px; height: 58px; }
    .continue-actions .button, .review-callout .button { width: 100%; }
    .review-callout { padding: 25px 21px; }
    .report-hero { padding: 40px 0 42px; }
    .report-hero h1 { font-size: 40px; }
    .report-section { padding: 34px 0 72px; }
    .report-card { padding: 22px 17px; }
    .skill-progress-row { grid-template-columns: 1fr auto; }
    .skill-progress-row .compact-progress { grid-column: 1 / -1; grid-row: 2; }
    .progress-list-row { grid-template-columns: auto minmax(0, 1fr) auto; }
    .progress-list-row .compact-progress { grid-column: 2 / -1; grid-row: 2; }
    .review-explainer { gap: 5px; }
    .review-explainer i { width: 10px; }
    .review-queue-card { grid-template-columns: 1fr; padding: 21px; }
    .review-queue-action { grid-template-columns: auto 1fr; align-items: center; justify-items: stretch; }
    .review-queue-action .button { width: 100%; }
}