@font-face {
    font-display: swap;
    font-family: "Inter";
    font-style: normal;
    font-weight: 400 800;
    src: url("/fonts/inter-latin.woff2") format("woff2");
}

@font-face {
    font-display: swap;
    font-family: "Manrope";
    font-style: normal;
    font-weight: 500 800;
    src: url("/fonts/manrope-latin.woff2") format("woff2");
}

:root {
    color-scheme: light;
    --background: #F8F7F2;
    --surface: #FFFFFF;
    --text-primary: #163D3A;
    --text-secondary: #55645E;
    --primary: #14665B;
    --primary-hover: #0F5148;
    --surface-soft: #E9F1E8;
    --highlight: #DCEC9A;
    --review: #B94F38;
    --border: #D6DED5;

    /* Compatibility aliases used by the existing learning components. */
    --ink: var(--text-primary);
    --muted: var(--text-secondary);
    --line: var(--border);
    --brand: var(--primary);
    --brand-dark: var(--primary-hover);
    --brand-soft: var(--surface-soft);
    --surface-tint: #F0F4EE;
    --teal: #14705F;
    --teal-soft: #E1F0E8;
    --amber: #765B00;
    --amber-soft: #F5EDC9;
    --danger: #A63E35;
    --danger-soft: #F7E7E3;
    --shadow: 0 18px 48px rgba(22, 61, 58, .09);
    --card-shadow: 0 8px 24px rgba(22, 61, 58, .06);
    --radius: 18px;
    --content: 1366px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--surface);
    color: var(--ink);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 16px;
    line-height: 1.55;
}
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; }
.hidden { display: none !important; }

.site-header, .app-header {
    align-items: center;
    background: rgba(255,255,255,.94);
    border-bottom: 1px solid rgba(222,219,234,.8);
    display: flex;
    height: 76px;
    justify-content: space-between;
    padding: 0 max(24px, calc((100vw - var(--content)) / 2));
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(16px);
}
.brand {
    align-items: center;
    display: inline-flex;
    font-size: 1.2rem;
    font-weight: 820;
    gap: 10px;
    letter-spacing: -.02em;
    text-decoration: none;
}
.brand-mark {
    align-items: center;
    background: linear-gradient(145deg, var(--brand), var(--brand-dark));
    border-radius: 12px 12px 4px 12px;
    color: white;
    display: inline-flex;
    font-size: 1rem;
    font-weight: 900;
    height: 38px;
    justify-content: center;
    transform: rotate(-3deg);
    width: 38px;
}
.brand-button { background: transparent; border: 0; color: inherit; cursor: pointer; padding: 0; }
.public-nav { display: flex; gap: 32px; }
.public-nav a { color: var(--muted); font-size: .93rem; font-weight: 650; text-decoration: none; }
.public-nav a:hover { color: var(--brand); }
.header-actions, .hero-actions, .app-account, .toolbar { align-items: center; display: flex; gap: 12px; }

.button {
    align-items: center;
    border: 1px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    display: inline-flex;
    font-weight: 750;
    justify-content: center;
    min-height: 44px;
    padding: 10px 18px;
    text-decoration: none;
    transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.button:hover { transform: translateY(-1px); }
.button:focus-visible, input:focus-visible, select:focus-visible, .option-button:focus-visible {
    outline: 3px solid rgba(95,63,230,.28);
    outline-offset: 2px;
}
.button-primary { background: var(--brand); box-shadow: 0 9px 25px rgba(95,63,230,.22); color: white; }
.button-primary:hover { background: #5032d4; }
.button-secondary { background: var(--surface); border-color: var(--line); color: var(--brand-dark); }
.button-ghost { background: transparent; color: var(--brand-dark); }
.button-light { background: white; color: var(--brand-dark); }
.button-large { min-height: 52px; padding: 13px 23px; }
.button-full { width: 100%; }
.button:disabled { cursor: not-allowed; opacity: .58; transform: none; }

.section { margin: 0 auto; max-width: var(--content); padding: 104px 24px; }
.hero {
    align-items: center;
    display: grid;
    gap: 72px;
    grid-template-columns: 1.08fr .92fr;
    min-height: 680px;
    padding-top: 82px;
}
.eyebrow {
    color: var(--brand);
    font-size: .76rem;
    font-weight: 850;
    letter-spacing: .13em;
    margin: 0 0 14px;
    text-transform: uppercase;
}
.hero h1 {
    font-size: clamp(3rem, 6vw, 5.4rem);
    letter-spacing: -.065em;
    line-height: .98;
    margin: 0;
}
.hero h1 span { color: var(--brand); }
.hero-text { color: var(--muted); font-size: 1.18rem; margin: 28px 0; max-width: 640px; }
.free-access-note {
    background: var(--teal-soft);
    border: 1px solid rgba(16, 129, 108, .2);
    border-radius: 12px;
    color: #086957;
    display: inline-block;
    font-size: .88rem;
    font-weight: 750;
    margin: 22px 0 0;
    padding: 10px 14px;
}
.supporting-copy { color: var(--muted); font-size: .9rem; margin-top: 24px; }

.level-preview {
    background: linear-gradient(160deg, #27205f, #16122e);
    border: 1px solid rgba(255,255,255,.13);
    border-radius: 30px;
    box-shadow: var(--shadow);
    color: white;
    padding: 28px;
    transform: rotate(1deg);
}
.preview-heading, .level-card, .next-card, .map-title, .skill-row {
    align-items: center;
    display: flex;
    justify-content: space-between;
}
.preview-heading { margin-bottom: 22px; }
.preview-heading > div { display: grid; }
.preview-label, .preview-heading span, .score span { color: #b8b2db; font-size: .76rem; }
.status-dot {
    background: rgba(74,211,175,.14);
    border: 1px solid rgba(74,211,175,.24);
    border-radius: 999px;
    color: #87e7ce !important;
    padding: 5px 10px;
}
.level-card {
    background: rgba(255,255,255,.1);
    border: 1px solid rgba(255,255,255,.11);
    border-radius: 18px;
    margin: 12px 0;
    padding: 19px;
}
.level-card > div:first-child, .score { display: grid; }
.level-card span { color: #c7c2e3; font-size: .82rem; }
.level-card strong { font-size: 1.08rem; }
.score { text-align: right; }
.score strong { color: #8ce6d0; font-size: 1.35rem; }
.muted-card { opacity: .72; }
.next-card {
    background: white;
    border-radius: 18px;
    color: var(--ink);
    gap: 12px;
    margin-top: 22px;
    padding: 17px;
}
.next-card > div { display: grid; flex: 1; }
.next-card small { color: var(--muted); }
.next-card > span:last-child { color: var(--brand); font-size: .85rem; font-weight: 800; }
.mini-icon {
    align-items: center;
    background: var(--brand-soft);
    border-radius: 11px;
    color: var(--brand);
    display: flex;
    height: 36px;
    justify-content: center;
    width: 36px;
}

.value-strip {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    padding: 25px 32px;
}
.value-strip div { display: grid; padding: 4px 22px; }
.value-strip div + div { border-left: 1px solid var(--line); }
.value-strip strong { font-size: .94rem; }
.value-strip span { color: var(--muted); font-size: .8rem; }

.section-heading { margin: 0 auto 48px; max-width: 720px; text-align: center; }
.section-heading.compact { margin-bottom: 34px; }
.section-heading h2, .map-copy h2, .final-cta h2 {
    font-size: clamp(2rem, 4vw, 3.3rem);
    letter-spacing: -.045em;
    line-height: 1.08;
    margin: 0 0 18px;
}
.section-heading p:not(.eyebrow), .map-copy > p:not(.eyebrow) { color: var(--muted); }
.feature-section { padding-top: 130px; }
.feature-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }
.feature-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    min-height: 250px;
    padding: 29px;
}
.feature-card > span { color: var(--brand); font-size: .78rem; font-weight: 850; }
.feature-card h3 { font-size: 1.3rem; letter-spacing: -.025em; margin: 52px 0 10px; }
.feature-card p { color: var(--muted); margin: 0; }

.map-showcase {
    align-items: center;
    display: grid;
    gap: 78px;
    grid-template-columns: .9fr 1.1fr;
}
.check-list { list-style: none; margin: 30px 0 0; padding: 0; }
.check-list li { margin: 12px 0; padding-left: 28px; position: relative; }
.check-list li::before { color: var(--teal); content: "✓"; font-weight: 900; left: 0; position: absolute; }
.map-panel {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 28px;
    padding: 28px;
}
.map-title { border-bottom: 1px solid var(--line); margin-bottom: 22px; padding-bottom: 18px; }
.map-title span { color: var(--muted); font-size: .8rem; }
.map-group h3 { color: var(--muted); font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; }
.skill-row { background: var(--surface); border-radius: 12px; margin: 9px 0; padding: 13px 15px; }
.pill, .tag {
    border-radius: 999px;
    display: inline-flex;
    font-size: .72rem;
    font-weight: 800;
    padding: 5px 9px;
}
.mastered { background: var(--teal-soft); color: var(--teal); }
.learning { background: var(--brand-soft); color: var(--brand); }
.review { background: var(--amber-soft); color: var(--amber); }
.locked { background: #e7e6eb; color: #666473; }

.trust-section { background: var(--brand-dark); border-radius: 30px; color: white; padding: 72px; }
.trust-section .eyebrow { color: #9ce8d6; }
.trust-grid { display: grid; gap: 32px; grid-template-columns: repeat(3, 1fr); }
.trust-grid p { color: #cac6df; }
.legal-note { border-top: 1px solid rgba(255,255,255,.15); color: #b7b2d0; font-size: .78rem; margin: 36px 0 0; padding-top: 24px; }
.final-cta {
    align-items: center;
    background: linear-gradient(120deg, var(--brand), #4323bd);
    border-radius: 30px;
    color: white;
    display: flex;
    justify-content: space-between;
    margin-bottom: 104px;
    padding: 64px;
}
.final-cta .eyebrow { color: #c9f1e8; }
.final-cta h2 { margin: 0; }
.site-footer {
    align-items: center;
    border-top: 1px solid var(--line);
    color: var(--muted);
    display: grid;
    gap: 15px;
    grid-template-columns: 1fr 2fr 1fr;
    margin: 0 auto;
    max-width: var(--content);
    padding: 36px 24px;
}
.site-footer p { font-size: .78rem; margin: 0; }
.site-footer p:last-child { text-align: right; }

.auth-dialog {
    background: transparent;
    border: 0;
    max-width: 480px;
    padding: 18px;
    width: calc(100% - 24px);
}
.auth-dialog::backdrop { background: rgba(16,12,42,.68); backdrop-filter: blur(5px); }
.auth-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 26px;
    box-shadow: var(--shadow);
    padding: 38px;
    position: relative;
}
.dialog-close {
    background: var(--surface-soft);
    border: 0;
    border-radius: 999px;
    color: var(--ink);
    cursor: pointer;
    font-size: 1.35rem;
    height: 38px;
    position: absolute;
    right: 18px;
    top: 18px;
    min-width: 38px;
    padding: 0 12px;
    width: auto;
}
.auth-brand { margin-bottom: 28px; }
.auth-card h2 { font-size: 2rem; letter-spacing: -.04em; margin: 0; }
.auth-subtitle { color: var(--muted); margin: 8px 0 25px; }
.field { display: grid; gap: 7px; margin: 15px 0; }
.field label { font-size: .84rem; font-weight: 720; }
.field input, .field select, select.input {
    background: var(--surface);
    border: 1px solid #c9c5d6;
    border-radius: 11px;
    color: var(--ink);
    min-height: 48px;
    padding: 10px 13px;
    width: 100%;
}
.field small, .privacy-copy { color: var(--muted); font-size: .72rem; }
.form-error {
    background: var(--danger-soft);
    border-radius: 10px;
    color: var(--danger);
    font-size: .82rem;
    padding: 10px 12px;
}
.auth-toggle {
    background: transparent;
    border: 0;
    color: var(--brand);
    cursor: pointer;
    font-weight: 750;
    margin-top: 18px;
    width: 100%;
}
.privacy-copy { margin: 22px 0 0; text-align: center; }

.app-shell { background: var(--surface-soft); min-height: 100vh; }
.app-header { position: sticky; }
.app-account span { color: var(--muted); font-size: .85rem; }
.demo-banner {
    background: var(--amber-soft);
    color: #6c450c;
    font-size: .76rem;
    padding: 8px 24px;
    text-align: center;
}
.app-main { margin: 0 auto; max-width: 1060px; padding: 48px 24px 96px; }
.app-page-head {
    align-items: flex-end;
    display: flex;
    gap: 24px;
    justify-content: space-between;
    margin-bottom: 30px;
}
.app-page-head h1 { font-size: clamp(2rem, 5vw, 3.25rem); letter-spacing: -.05em; line-height: 1; margin: 5px 0; }
.app-page-head p { color: var(--muted); margin: 0; }
.card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: 0 8px 28px rgba(29,20,75,.05);
    padding: 25px;
}
.card-grid { display: grid; gap: 18px; grid-template-columns: repeat(2, minmax(0,1fr)); }
.student-card, .subject-card, .plan-item {
    align-items: center;
    display: flex;
    gap: 16px;
    justify-content: space-between;
}
.student-card + .student-card, .plan-item + .plan-item { border-top: 1px solid var(--line); margin-top: 16px; padding-top: 16px; }
.student-avatar {
    align-items: center;
    background: var(--brand-soft);
    border-radius: 14px;
    color: var(--brand);
    display: flex;
    font-size: 1.15rem;
    font-weight: 850;
    height: 50px;
    justify-content: center;
    width: 50px;
}
.student-info { display: grid; flex: 1; }
.student-info span, .subject-card p, .meta { color: var(--muted); font-size: .8rem; }
.student-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-left: auto; }
.button-danger { background: #a6293f; border: 1px solid #a6293f; color: #fff; }
.button-danger:hover { background: #861e31; border-color: #861e31; }
.delete-student-card { max-width: 520px; }
.delete-student-card > p:not(.eyebrow):not(.form-error) { color: var(--muted); line-height: 1.65; }
.form-grid { align-items: end; display: grid; gap: 14px; grid-template-columns: 1fr 1fr auto; }
.form-grid .field { margin: 0; }
.section-stack { display: grid; gap: 22px; }
.subject-card { align-items: flex-start; min-height: 190px; flex-direction: column; }
.subject-card h2 { margin: 0; }
.subject-card p { flex: 1; margin: 8px 0; }
.subject-card .diagnostic-progress { color: var(--ink); font-size: .78rem; line-height: 1.45; }
.subject-actions { display: flex; flex-wrap: wrap; gap: 9px; width: 100%; }

.loading-card, .empty-state, .error-state { padding: 70px 24px; text-align: center; }
.spinner {
    animation: spin .8s linear infinite;
    border: 3px solid var(--brand-soft);
    border-radius: 50%;
    border-top-color: var(--brand);
    display: inline-block;
    height: 34px;
    width: 34px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.progress-track { background: var(--line); border-radius: 999px; height: 8px; overflow: hidden; }
.progress-bar { background: linear-gradient(90deg, var(--brand), #8a72f0); height: 100%; }
.question-card { margin: 0 auto; max-width: 760px; }
.question-number { color: var(--muted); font-size: .78rem; font-weight: 750; }
.question-card h2 { font-size: clamp(1.4rem, 4vw, 2.05rem); letter-spacing: -.025em; margin: 24px 0; }
.exam-source { align-items: center; background: #f0ebff; border: 1px solid #d8ccff; border-radius: 12px; color: #382376; display: flex; flex-wrap: wrap; gap: 8px 16px; justify-content: space-between; margin: 16px 0; padding: 12px 15px; }
.exam-source a { color: #5533b8; font-weight: 800; }
.notebook-review-card { border-left: 5px solid var(--amber); margin: 0 auto; max-width: 900px; }
.notebook-review-header { align-items: flex-start; display: flex; gap: 20px; justify-content: space-between; }
.notebook-review-header h2 { margin: 5px 0 0; }
.notebook-status { background: #ede8ff; border-radius: 999px; color: #5533b8; font-size: .82rem; font-weight: 900; padding: 8px 12px; white-space: nowrap; }
.notebook-status.approved { background: #dcf8ec; color: #087354; }
.notebook-status.revisionrequired { background: #ffe8ec; color: #9d263b; }
.notebook-status.pendingreview { background: #fff2ce; color: #765000; }
.notebook-status.notsent { background: #efedf5; color: #655f74; }
.notebook-grade { align-items: center; background: var(--surface-tint); border-radius: 14px; display: flex; gap: 16px; margin: 18px 0; padding: 16px; }
.notebook-grade strong { color: var(--brand); font-size: 1.35rem; }
.notebook-review-card blockquote { background: #f7f4ff; border-left: 4px solid var(--brand); border-radius: 0 12px 12px 0; color: var(--ink); margin: 14px 0; padding: 16px; }
.notebook-upload { border-top: 1px solid var(--line); display: grid; gap: 14px; margin-top: 22px; padding-top: 20px; }
.notebook-upload label { display: grid; gap: 4px; }
.notebook-upload label span { color: var(--muted); font-size: .9rem; }
.notebook-upload input[type=file] { background: #fff; border: 1px dashed #afa4cc; border-radius: 12px; color: var(--ink); padding: 14px; width: 100%; }
.notebook-upload .button { justify-self: start; }
.options { display: grid; gap: 10px; }
.option-button {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 13px;
    color: var(--ink);
    cursor: pointer;
    min-height: 52px;
    padding: 13px 16px;
    text-align: left;
}
.option-button:hover, .option-button.selected { background: var(--brand-soft); border-color: var(--brand); color: var(--brand-dark); }
.question-footer { align-items: center; display: flex; justify-content: space-between; margin-top: 25px; }
.inline-error { color: var(--danger); font-size: .82rem; }

.result-hero {
    background: linear-gradient(145deg, var(--brand-dark), #37249a);
    border-radius: 28px;
    color: white;
    display: grid;
    gap: 28px;
    grid-template-columns: 1fr auto;
    padding: 38px;
}
.result-hero h1 { margin: 0; }
.result-score { align-items: center; display: grid; text-align: center; }
.result-score strong { color: #94ead5; font-size: 3rem; line-height: 1; }
.stats-grid { display: grid; gap: 14px; grid-template-columns: repeat(3,1fr); }
.stat-card strong { display: block; font-size: 1.6rem; }
.stat-card span { color: var(--muted); font-size: .78rem; }
.gap-list { display: flex; flex-wrap: wrap; gap: 9px; }
.gap-chip { background: var(--amber-soft); border-radius: 999px; color: var(--amber); font-size: .8rem; font-weight: 750; padding: 8px 12px; }

.dashboard-grid { display: grid; gap: 20px; grid-template-columns: 1.1fr .9fr; }
.level-summary h2 { font-size: 2rem; margin: 5px 0; }
.level-number { color: var(--brand); font-size: 3.2rem; font-weight: 850; letter-spacing: -.06em; }
.plan-list { margin-top: 15px; }
.plan-item > div { display: grid; flex: 1; }
.plan-item small { color: var(--muted); }
.plan-number {
    align-items: center;
    background: var(--brand-soft);
    border-radius: 10px;
    color: var(--brand);
    display: flex;
    font-weight: 850;
    height: 36px;
    justify-content: center;
    width: 36px;
}
.plan-item.completed { background: var(--teal-soft); border-radius: 12px; padding: 12px; }
.plan-item.completed + .plan-item { margin-top: 4px; }
.plan-item.completed strong { text-decoration: line-through; text-decoration-thickness: 1px; }
.plan-number.completed { background: var(--teal); color: #082f2a; }
.map-area + .map-area { margin-top: 25px; }
.map-area h2 { font-size: 1.15rem; margin: 0 0 10px; }
.map-unit { border-left: 2px solid var(--brand-soft); margin-left: 8px; padding-left: 18px; }
.map-unit h3 { color: var(--muted); font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; }
.web-skill {
    align-items: center;
    border-top: 1px solid var(--line);
    display: flex;
    gap: 12px;
    justify-content: space-between;
    padding: 12px 0;
}
.web-skill:first-of-type { border-top: 0; }
.web-skill > div { display: grid; }
.web-skill small { color: var(--muted); }

.lesson-content {
    color: var(--muted);
    font-size: 1.06rem;
    line-height: 1.75;
    white-space: pre-line;
}
.lesson-media-section > .eyebrow { margin-bottom: 16px; }
.lesson-media-grid { display: grid; gap: 16px; }
.lesson-media-card { background: var(--surface-soft); border: 1px solid var(--line); border-radius: 16px; overflow: hidden; padding: 18px; }
.lesson-media-card h3 { font-size: 1rem; margin: 0 0 12px; }
.image-media { margin: 0; padding: 0; }
.image-media img { aspect-ratio: 16 / 9; display: block; object-fit: cover; width: 100%; }
.image-media figcaption { color: var(--muted); font-size: .78rem; padding: 11px 15px; }
.video-frame { aspect-ratio: 16 / 9; background: #0f0d18; border-radius: 12px; overflow: hidden; }
.video-frame iframe { border: 0; height: 100%; width: 100%; }
.lesson-media-card audio { width: 100%; }
.transcript { border-top: 1px solid var(--line); margin-top: 14px; padding-top: 10px; }
.transcript summary { color: var(--brand); cursor: pointer; font-size: .8rem; font-weight: 750; }
.transcript p { color: var(--muted); font-size: .85rem; white-space: pre-line; }
.ebook-media { align-items: center; display: flex; gap: 18px; justify-content: space-between; }
.ebook-media div { flex: 1; }.ebook-media p { color: var(--muted); font-size: .84rem; margin: 0; }
.feedback { border-radius: 14px; margin-top: 18px; padding: 16px; }
.feedback.correct { background: var(--teal-soft); color: #096458; }
.feedback.incorrect { background: var(--danger-soft); color: var(--danger); }

.toast {
    background: var(--ink);
    border-radius: 12px;
    bottom: 24px;
    box-shadow: var(--shadow);
    color: white;
    left: 50%;
    max-width: calc(100% - 30px);
    padding: 12px 18px;
    position: fixed;
    transform: translateX(-50%);
    z-index: 80;
}

@media (max-width: 850px) {
    .public-nav { display: none; }
    .site-header, .app-header { padding: 0 18px; }
    .hero, .map-showcase, .dashboard-grid { grid-template-columns: 1fr; }
    .hero { gap: 44px; min-height: auto; padding-top: 64px; }
    .level-preview { transform: none; }
    .value-strip { grid-template-columns: repeat(2,1fr); }
    .value-strip div:nth-child(3) { border-left: 0; }
    .feature-grid, .trust-grid { grid-template-columns: 1fr; }
    .trust-section { border-radius: 0; padding: 64px 28px; }
    .final-cta { align-items: flex-start; flex-direction: column; gap: 28px; margin-bottom: 60px; }
    .site-footer { grid-template-columns: 1fr; }
    .site-footer p:last-child { text-align: left; }
    .card-grid, .stats-grid { grid-template-columns: 1fr; }
    .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
    .header-actions .button-ghost { display: none; }
    .header-actions .button { padding: 9px 13px; }
    .section { padding: 72px 18px; }
    .hero h1 { font-size: 3rem; }
    .hero-actions { align-items: stretch; flex-direction: column; }
    .value-strip { border-left: 0; border-radius: 0; border-right: 0; margin: 0; padding: 20px 10px; }
    .value-strip div { padding: 8px 13px; }
    .value-strip div + div { border-left: 0; }
    .map-panel, .level-preview, .final-cta { border-radius: 20px; padding: 22px; }
    .auth-card { padding: 30px 22px; }
    .app-account span { display: none; }
    .app-main { padding: 34px 16px 80px; }
    .app-page-head { align-items: flex-start; flex-direction: column; }
    .result-hero { grid-template-columns: 1fr; padding: 26px; }
    .result-score { justify-content: start; text-align: left; }
    .student-card { align-items: flex-start; flex-wrap: wrap; }
    .student-actions { margin-left: 0; width: 100%; }
    .student-actions .button { flex: 1; }
    .notebook-review-header, .notebook-grade { align-items: flex-start; flex-direction: column; }
    .ebook-media { align-items: stretch; flex-direction: column; }
}

@media (prefers-color-scheme: dark) {
    :root {
        color-scheme: dark;
        --ink: #f1effa;
        --muted: #aaa7bb;
        --surface: #141221;
        --surface-soft: #1b1929;
        --surface-tint: #242039;
        --line: #343044;
        --brand: #927cff;
        --brand-dark: #d9d2ff;
        --brand-soft: #302a50;
        --teal: #72dbc4;
        --teal-soft: #173d39;
        --amber: #ffc56d;
        --amber-soft: #3c2d16;
        --danger: #ff9aae;
        --danger-soft: #44202a;
    }
    .site-header, .app-header { background: rgba(20,18,33,.94); }
    .level-preview { background: linear-gradient(160deg, #27205f, #0f0c20); }
    .button-primary { color: #fff; }
    .button-light { background: #fff; color: #21145f; }
    .locked { background: #33313d; color: #bab7c5; }
    .demo-banner { color: #ffd28d; }
}

/* Educational experience */
.today-card { min-width: 0; }
.today-progress { align-items: center; display: grid; gap: 8px; grid-template-columns: 1fr minmax(100px, 32%); margin: 16px 0 4px; }
.today-progress progress, .subject-progress-row progress { accent-color: var(--teal); height: 9px; width: 100%; }
.task-state { color: var(--muted); font-size: .69rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.plan-item.inprogress { background: var(--brand-soft); border-radius: 12px; padding: 12px; }
.plan-number.inprogress { background: var(--brand); color: white; }
.section-title-row { align-items: end; display: flex; gap: 20px; justify-content: space-between; }
.section-title-row h2 { margin: 0; }
.week-strip { display: grid; gap: 10px; grid-template-columns: repeat(7, minmax(0, 1fr)); overflow-x: auto; padding: 4px 2px 8px; }
.week-day { background: var(--surface-soft); border: 1px solid var(--line); border-radius: 15px; color: var(--ink); display: grid; gap: 3px; min-width: 92px; padding: 13px 10px; text-align: left; }
button.week-day { cursor: pointer; }
.week-day span, .week-day small, .week-day em { color: var(--muted); font-size: .7rem; font-style: normal; }
.week-day strong { font-size: 1.25rem; }
.week-day.today { border-color: var(--brand); }
.week-day.selected { background: var(--brand-soft); box-shadow: inset 0 0 0 1px var(--brand); }
.week-guidance { margin-bottom: 0; }

.map-legend { display: flex; flex-wrap: wrap; gap: 15px; margin: -10px 0 22px; }
.map-legend span { align-items: center; color: var(--muted); display: inline-flex; font-size: .75rem; gap: 6px; }
.map-legend span::before { background: var(--line); border-radius: 50%; content: ""; height: 9px; width: 9px; }
.map-legend .available::before { background: var(--brand); }
.map-legend .inprogress::before { background: var(--amber); }
.map-legend .completed::before { background: var(--teal); }
.map-node { background: transparent; border: 0; border-top: 1px solid var(--line); color: var(--ink); cursor: pointer; font: inherit; min-height: 78px; text-align: left; width: 100%; }
.map-node:hover:not(:disabled) { background: var(--surface-soft); }
.map-node:focus-visible { border-radius: 10px; outline: 3px solid rgba(95,63,230,.25); outline-offset: 2px; }
.map-node:disabled { cursor: not-allowed; opacity: .66; }
.node-marker { background: var(--line); border: 4px solid var(--surface); border-radius: 50%; box-shadow: 0 0 0 2px var(--line); flex: 0 0 auto; height: 18px; width: 18px; }
.map-node.available .node-marker { background: var(--brand); box-shadow: 0 0 0 2px var(--brand); }
.map-node.inprogress .node-marker { background: var(--amber); box-shadow: 0 0 0 2px var(--amber); }
.map-node.completed .node-marker { background: var(--teal); box-shadow: 0 0 0 2px var(--teal); }
.node-copy { display: grid; flex: 1; }
.node-copy small { color: var(--muted); }
.node-help { margin-top: 2px; }
.pill.available { background: var(--brand-soft); color: var(--brand); }
.pill.inprogress { background: var(--amber-soft); color: var(--amber); }
.pill.completed { background: var(--teal-soft); color: var(--teal); }
.pill.notstarted, .pill.locked { background: var(--surface-soft); color: var(--muted); }

.lesson-reading { margin: 0 auto; max-width: 860px; }
.lesson-hero { background: linear-gradient(145deg, var(--brand-dark), #3e2a9f); color: white; overflow: hidden; padding: 38px; position: relative; }
.lesson-hero::after { border: 32px solid rgba(255,255,255,.06); border-radius: 50%; content: ""; height: 180px; position: absolute; right: -70px; top: -80px; width: 180px; }
.lesson-hero .eyebrow { color: #aeeadd; }
.lesson-hero h2 { font-size: clamp(1.8rem, 4vw, 2.7rem); letter-spacing: -.04em; line-height: 1.12; margin: 0; max-width: 700px; }
.lesson-meta { display: flex; gap: 9px; margin-top: 22px; }
.lesson-meta span, .exercise-meta span { background: rgba(255,255,255,.13); border: 1px solid rgba(255,255,255,.17); border-radius: 999px; font-size: .73rem; font-weight: 780; padding: 5px 10px; }
.lesson-section { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 8px 28px rgba(29,20,75,.04); display: grid; gap: 18px; grid-template-columns: 42px 1fr; padding: 30px; }
.lesson-section h2 { font-size: 1.35rem; letter-spacing: -.025em; margin: 1px 0 14px; }
.lesson-section p { color: var(--muted); font-size: 1.02rem; line-height: 1.75; margin: 10px 0; max-width: 70ch; }
.lesson-section-icon { align-items: center; background: var(--brand-soft); border-radius: 12px; color: var(--brand); display: flex; font-weight: 900; height: 42px; justify-content: center; }
.lesson-section.example { background: var(--surface-tint); }
.lesson-section.notebook { border-left: 4px solid var(--amber); }
.lesson-section.next { border-left: 4px solid var(--teal); }
.lesson-step { border-left: 2px solid var(--line); padding-left: 13px; }
.exercise-meta { display: flex; gap: 7px; margin: 12px 0; }
.exercise-meta span { background: var(--surface-soft); border-color: var(--line); color: var(--muted); }
.exercise-stimulus { background: var(--surface-tint); border-left: 4px solid var(--brand); border-radius: 8px 15px 15px 8px; margin: 20px 0; padding: 18px 20px; }
.exercise-stimulus > span { color: var(--brand); font-size: .7rem; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.exercise-stimulus p { font-size: 1rem; line-height: 1.65; white-space: pre-line; }
.exercise-stimulus small { color: var(--muted); }
.lesson-option { position: relative; transition: border-color .15s, background .15s; }
.lesson-option.correct-answer { background: var(--teal-soft); border-color: var(--teal); color: var(--ink); }
.lesson-option.wrong-answer { background: var(--danger-soft); border-color: var(--danger); color: var(--ink); }
.image-media.featured { margin-inline: -18px; }
.image-media figcaption { display: grid; gap: 2px; }
.image-media figcaption small { color: var(--muted); opacity: .85; }

.day-heading { align-items: center; display: flex; gap: 28px; justify-content: space-between; }
.day-heading h2 { margin: 0; }
.daily-summary { display: grid; gap: 12px; grid-template-columns: repeat(4, minmax(90px, 1fr)); }
.daily-summary > div { background: var(--surface-soft); border-radius: 12px; display: grid; padding: 11px 13px; }
.daily-summary strong { font-size: 1.15rem; }
.daily-summary span { color: var(--muted); font-size: .68rem; }
.guardian-task-list, .attempt-list, .subject-progress-list { display: grid; gap: 10px; }
.guardian-task { align-items: center; border: 1px solid var(--line); border-radius: 14px; display: flex; gap: 14px; justify-content: space-between; padding: 14px; }
.guardian-task > div { display: grid; }
.guardian-task small, .guardian-activity summary span, .subject-progress-row span { color: var(--muted); font-size: .76rem; }
.task-subject { color: var(--brand); font-size: .68rem; font-weight: 850; text-transform: uppercase; }
.status-label { background: var(--surface-soft); border-radius: 999px; color: var(--muted); font-size: .7rem; font-weight: 800; padding: 5px 9px; white-space: nowrap; }
.guardian-task.completed .status-label { background: var(--teal-soft); color: var(--teal); }
.guardian-task.inprogress .status-label { background: var(--amber-soft); color: var(--amber); }
.guardian-activity { border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.guardian-activity summary { align-items: center; cursor: pointer; display: flex; gap: 16px; justify-content: space-between; list-style: none; padding: 16px; }
.guardian-activity summary > div { display: grid; }
.attempt-list { background: var(--surface-soft); border-top: 1px solid var(--line); padding: 14px; }
.attempt-detail { background: var(--surface); border-left: 4px solid var(--line); border-radius: 10px; padding: 14px; }
.attempt-detail.correct { border-left-color: var(--teal); }
.attempt-detail.incorrect { border-left-color: var(--danger); }
.attempt-detail p { margin: 7px 0; }
.attempt-detail dl { display: grid; gap: 7px; grid-template-columns: 1fr 1fr; }
.attempt-detail dl div { background: var(--surface-soft); border-radius: 8px; padding: 8px; }
.attempt-detail dt { color: var(--muted); font-size: .68rem; }
.attempt-detail dd { margin: 0; }
.subject-progress-row { align-items: center; display: grid; gap: 13px; grid-template-columns: minmax(170px, 1fr) minmax(130px, 2fr) 45px; }
.subject-progress-row > div { display: grid; }
.empty-state.compact { padding: 24px; }

@media (max-width: 760px) {
    .today-progress { grid-template-columns: 1fr; }
    .plan-item { align-items: flex-start; flex-wrap: wrap; }
    .plan-item .button, .plan-item .tag { margin-left: 52px; }
    .week-strip { grid-template-columns: repeat(7, 105px); }
    .day-heading { align-items: stretch; flex-direction: column; }
    .daily-summary { grid-template-columns: repeat(2, 1fr); }
    .subject-progress-row { grid-template-columns: 1fr 55px; }
    .subject-progress-row progress { grid-column: 1 / -1; grid-row: 2; }
    .lesson-section { grid-template-columns: 34px 1fr; padding: 22px 18px; }
    .lesson-section-icon { height: 34px; }
}

@media (max-width: 520px) {
    .lesson-hero { padding: 28px 21px; }
    .question-card { padding: 21px 18px; }
    .question-card h2 { font-size: 1.35rem; }
    .map-node { align-items: flex-start; flex-wrap: wrap; padding: 15px 4px; }
    .map-node .pill { margin-left: 30px; }
    .guardian-activity summary { align-items: flex-start; flex-direction: column; }
    .attempt-detail dl { grid-template-columns: 1fr; }
}


@media (prefers-color-scheme: dark) {
    .lesson-hero { background: linear-gradient(145deg, #27205f, #17132d); }
}

/* Trefos visual system — color communicates subject, state and learning intent. */
:root {
    --sky: #176fc1;
    --sky-soft: #e3f2ff;
    --coral: #c8425a;
    --coral-soft: #ffe7ec;
    --violet-glow: rgba(95, 63, 230, .13);
    --teal-glow: rgba(22, 139, 125, .11);
    --card-shadow: 0 12px 35px rgba(40, 27, 88, .08);
}

::selection { background: var(--brand-soft); color: var(--brand-dark); }

body {
    background:
        radial-gradient(circle at 8% 4%, var(--violet-glow), transparent 27rem),
        radial-gradient(circle at 94% 30%, var(--teal-glow), transparent 28rem),
        var(--surface);
}

.site-header, .app-header {
    box-shadow: 0 5px 24px rgba(39, 25, 89, .055);
}

.app-header::after {
    background: linear-gradient(90deg, var(--brand), var(--sky), var(--teal), var(--amber));
    bottom: -1px;
    content: "";
    height: 2px;
    left: 0;
    opacity: .65;
    position: absolute;
    right: 0;
}

.brand-mark {
    background: linear-gradient(145deg, #795cff 0%, var(--brand) 52%, #35218c 100%);
    box-shadow: 0 7px 18px rgba(95, 63, 230, .28);
}

.button-primary {
    background: linear-gradient(135deg, #7154f5, var(--brand) 58%, #4b2bc4);
    box-shadow: 0 10px 24px rgba(95,63,230,.25);
}
.button-primary:hover { background: linear-gradient(135deg, #6548ed, #5032d4 58%, #4020b3); }
.button-secondary:hover { background: var(--brand-soft); border-color: rgba(95,63,230,.35); }

.hero::before {
    background: var(--coral-soft);
    border-radius: 50%;
    content: "";
    filter: blur(1px);
    height: 145px;
    left: -90px;
    opacity: .65;
    position: absolute;
    top: 105px;
    width: 145px;
    z-index: -1;
}
.hero { position: relative; }
.hero h1 span {
    background: linear-gradient(95deg, var(--brand), var(--sky) 48%, var(--teal));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.level-preview {
    background:
        radial-gradient(circle at 95% 5%, rgba(62, 205, 177, .23), transparent 38%),
        linear-gradient(155deg, #32266f, #17132f 62%, #102e38);
    box-shadow: 0 28px 75px rgba(35, 24, 91, .23);
}
.level-card:first-of-type { border-left: 4px solid #9e8cff; }
.level-card:nth-of-type(2) { border-left: 4px solid #65ddc2; }
.next-card { box-shadow: 0 12px 28px rgba(4, 8, 28, .22); }

.value-strip {
    background: linear-gradient(110deg, var(--brand-soft), var(--sky-soft) 50%, var(--teal-soft));
    border-color: rgba(95, 63, 230, .15);
    box-shadow: var(--card-shadow);
}
.value-strip div:nth-child(1) strong { color: var(--brand); }
.value-strip div:nth-child(2) strong { color: var(--sky); }
.value-strip div:nth-child(3) strong { color: var(--teal); }
.value-strip div:nth-child(4) strong { color: var(--amber); }

.feature-card {
    box-shadow: var(--card-shadow);
    overflow: hidden;
    position: relative;
    transition: transform .2s ease, box-shadow .2s ease;
}
.feature-card:hover { box-shadow: 0 18px 42px rgba(40, 27, 88, .13); transform: translateY(-3px); }
.feature-card::before { background: var(--brand); content: ""; height: 5px; left: 0; position: absolute; right: 0; top: 0; }
.feature-card:nth-child(2)::before { background: var(--sky); }
.feature-card:nth-child(3)::before { background: var(--teal); }
.feature-card:nth-child(2) > span { color: var(--sky); }
.feature-card:nth-child(3) > span { color: var(--teal); }
.map-panel { background: linear-gradient(145deg, var(--surface-soft), var(--sky-soft)); box-shadow: var(--card-shadow); }
.trust-section {
    background:
        radial-gradient(circle at 10% 0, rgba(117, 91, 255, .42), transparent 38%),
        radial-gradient(circle at 95% 100%, rgba(22, 139, 125, .35), transparent 36%),
        #181232;
}
.final-cta { background: linear-gradient(120deg, #6847ee, #4930c2 48%, #176d89 115%); box-shadow: 0 24px 55px rgba(62, 38, 163, .24); }

.auth-card {
    background:
        radial-gradient(circle at 100% 0, var(--sky-soft), transparent 13rem),
        var(--surface);
}
.app-shell {
    background:
        radial-gradient(circle at 8% 4%, var(--violet-glow), transparent 31rem),
        radial-gradient(circle at 94% 24%, var(--teal-glow), transparent 32rem),
        var(--surface-soft);
}
.app-main { max-width: 1120px; }
.app-page-head h1 {
    background: linear-gradient(98deg, var(--ink), var(--brand-dark));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.card { border-color: rgba(119, 103, 164, .2); box-shadow: var(--card-shadow); }

.student-card {
    background: linear-gradient(100deg, var(--surface-soft), transparent 62%);
    border-radius: 16px;
    padding: 13px;
}
.student-card + .student-card { border-top: 0; margin-top: 10px; padding-top: 13px; }
.student-card:nth-child(4n+2) .student-avatar { background: var(--sky-soft); color: var(--sky); }
.student-card:nth-child(4n+3) .student-avatar { background: var(--teal-soft); color: var(--teal); }
.student-card:nth-child(4n+4) .student-avatar { background: var(--coral-soft); color: var(--coral); }

.subject-card {
    --subject-accent: var(--brand);
    --subject-soft: var(--brand-soft);
    background: linear-gradient(145deg, var(--surface) 52%, var(--subject-soft));
    border-top: 5px solid var(--subject-accent);
    overflow: hidden;
    position: relative;
    transition: box-shadow .2s ease, transform .2s ease;
}
.subject-card:hover { box-shadow: 0 18px 42px rgba(40, 27, 88, .13); transform: translateY(-2px); }
.subject-card::after {
    border: 22px solid var(--subject-accent);
    border-radius: 50%;
    content: "";
    height: 80px;
    opacity: .045;
    position: absolute;
    right: -35px;
    top: -42px;
    width: 80px;
}
.subject-card:nth-child(4n+2) { --subject-accent: var(--sky); --subject-soft: var(--sky-soft); }
.subject-card:nth-child(4n+3) { --subject-accent: var(--teal); --subject-soft: var(--teal-soft); }
.subject-card:nth-child(4n+4) { --subject-accent: var(--coral); --subject-soft: var(--coral-soft); }
.subject-card h2 { color: var(--subject-accent); }

.level-summary {
    background: linear-gradient(145deg, var(--surface), var(--brand-soft));
    border-top: 5px solid var(--brand);
    overflow: hidden;
    position: relative;
}
.level-summary::after {
    border: 28px solid var(--brand);
    border-radius: 50%;
    content: "";
    height: 130px;
    opacity: .05;
    position: absolute;
    right: -55px;
    top: -60px;
    width: 130px;
}
.today-card { border-top: 5px solid var(--teal); }
.plan-item {
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 12px;
}
.plan-item + .plan-item { border-top: 1px solid var(--line); margin-top: 10px; padding-top: 12px; }
.plan-item.inprogress { border-color: rgba(95, 63, 230, .35); box-shadow: inset 4px 0 0 var(--brand); }
.plan-item.completed { border-color: rgba(22, 139, 125, .26); box-shadow: inset 4px 0 0 var(--teal); }
.plan-number { border-radius: 50%; }
.plan-number.completed { color: white; }

.week-day { transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease; }
.week-day:hover { border-color: var(--sky); transform: translateY(-2px); }
.week-day.today { background: var(--sky-soft); border-color: var(--sky); }
.week-day.selected { background: linear-gradient(145deg, var(--brand-soft), var(--sky-soft)); box-shadow: inset 0 0 0 1px var(--brand), 0 8px 18px rgba(95,63,230,.11); }

.map-unit { border-left: 3px solid var(--brand-soft); }
.map-node { border: 1px solid transparent; border-radius: 14px; margin: 7px 0; padding: 12px 10px; }
.map-node:hover:not(:disabled) { border-color: var(--line); box-shadow: 0 7px 18px rgba(40,27,88,.06); }
.map-node.available { background: linear-gradient(90deg, var(--brand-soft), transparent 75%); }
.map-node.inprogress { background: linear-gradient(90deg, var(--amber-soft), transparent 75%); }
.map-node.completed { background: linear-gradient(90deg, var(--teal-soft), transparent 75%); }

.lesson-hero {
    background:
        radial-gradient(circle at 92% 8%, rgba(63, 214, 183, .25), transparent 38%),
        linear-gradient(135deg, #2c1d73, #5e3fdd 54%, #176f82 130%);
    box-shadow: 0 20px 50px rgba(52, 33, 139, .23);
}
.lesson-section { --lesson-accent: var(--brand); border-left: 5px solid var(--lesson-accent); }
.lesson-section.overview { --lesson-accent: var(--brand); background: linear-gradient(110deg, var(--brand-soft), var(--surface) 30%); }
.lesson-section.concept { --lesson-accent: var(--sky); background: linear-gradient(110deg, var(--sky-soft), var(--surface) 30%); }
.lesson-section.example { --lesson-accent: var(--teal); background: linear-gradient(110deg, var(--teal-soft), var(--surface) 34%); }
.lesson-section.notebook { --lesson-accent: var(--amber); background: linear-gradient(110deg, var(--amber-soft), var(--surface) 34%); }
.lesson-section.next { --lesson-accent: var(--coral); background: linear-gradient(110deg, var(--coral-soft), var(--surface) 34%); }
.lesson-section .lesson-section-icon { background: var(--lesson-accent); color: white; box-shadow: 0 7px 16px color-mix(in srgb, var(--lesson-accent) 24%, transparent); }
.lesson-media-card { background: linear-gradient(145deg, var(--surface-soft), var(--surface)); box-shadow: 0 7px 20px rgba(40,27,88,.05); }
.image-media img { background: var(--surface-tint); }
.options { counter-reset: trefos-option; }
.option-button { align-items: center; display: flex; gap: 12px; transition: transform .15s ease, border-color .15s ease, background .15s ease; }
.option-button::before {
    align-items: center;
    background: var(--surface-soft);
    border: 1px solid var(--line);
    border-radius: 9px;
    content: counter(trefos-option, upper-alpha);
    counter-increment: trefos-option;
    display: inline-flex;
    flex: 0 0 32px;
    font-size: .75rem;
    font-weight: 850;
    height: 32px;
    justify-content: center;
}
.option-button:hover { transform: translateX(3px); }
.option-button.selected::before { background: var(--brand); border-color: var(--brand); color: white; }
.option-button.correct-answer::before { background: var(--teal); border-color: var(--teal); color: white; }
.option-button.wrong-answer::before { background: var(--danger); border-color: var(--danger); color: white; }
.notebook-review-card { background: linear-gradient(130deg, var(--amber-soft), var(--surface) 38%); }

.daily-summary > div { border-top: 3px solid var(--brand); }
.daily-summary > div:nth-child(2) { border-color: var(--sky); }
.daily-summary > div:nth-child(3) { border-color: var(--teal); }
.daily-summary > div:nth-child(4) { border-color: var(--coral); }
.guardian-task { background: linear-gradient(100deg, var(--surface-soft), var(--surface)); }
.guardian-task.completed { border-left: 4px solid var(--teal); }
.guardian-task.inprogress { border-left: 4px solid var(--amber); }

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
}

@media (prefers-color-scheme: dark) {
    :root {
        --sky: #78baff;
        --sky-soft: #163148;
        --coral: #ff9cac;
        --coral-soft: #43212b;
        --violet-glow: rgba(146, 124, 255, .12);
        --teal-glow: rgba(114, 219, 196, .08);
        --card-shadow: 0 13px 36px rgba(0, 0, 0, .22);
    }
    body { background-color: #11101c; }
    .app-page-head h1 { background: none; color: var(--ink); }
    .value-strip { background: linear-gradient(110deg, #282342, #172b3b 52%, #18352f); }
    .map-panel { background: linear-gradient(145deg, var(--surface-soft), #152b3d); }
    .subject-card { background: linear-gradient(145deg, var(--surface) 58%, var(--subject-soft)); }
    .lesson-section.overview, .lesson-section.concept, .lesson-section.example,
    .lesson-section.notebook, .lesson-section.next { background: linear-gradient(110deg, color-mix(in srgb, var(--lesson-accent) 13%, var(--surface)), var(--surface) 42%); }
    .option-button::before { background: var(--surface-tint); }
}

/* Reference-aligned Trefos interface. This final layer intentionally keeps the
   existing learning components while giving public and authenticated areas one
   calm, accessible visual language. */
:root {
    color-scheme: light;
    --background: #F8F7F2;
    --surface: #FFFFFF;
    --text-primary: #163D3A;
    --text-secondary: #55645E;
    --primary: #14665B;
    --primary-hover: #0F5148;
    --surface-soft: #E9F1E8;
    --highlight: #DCEC9A;
    --review: #B94F38;
    --border: #D6DED5;
    --ink: var(--text-primary);
    --muted: var(--text-secondary);
    --line: var(--border);
    --brand: var(--primary);
    --brand-dark: var(--primary-hover);
    --brand-soft: var(--surface-soft);
    --surface-tint: #F0F4EE;
    --teal: #14705F;
    --teal-soft: #E1F0E8;
    --amber: #765B00;
    --amber-soft: #F5EDC9;
    --danger: #A63E35;
    --danger-soft: #F7E7E3;
    --sky: #2D6772;
    --sky-soft: #E5F0F0;
    --coral: var(--review);
    --coral-soft: #F7E7E3;
    --violet-glow: transparent;
    --teal-glow: transparent;
    --shadow: 0 18px 48px rgba(22, 61, 58, .09);
    --card-shadow: 0 8px 24px rgba(22, 61, 58, .06);
}

html {
    background: var(--background);
    scroll-padding-top: 92px;
}

body {
    background: var(--background);
    color: var(--text-primary);
    font-family: "Inter", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    min-width: 320px;
    overflow-x: hidden;
}

.skip-link {
    background: var(--text-primary);
    border-radius: 0 0 10px 10px;
    color: #FFFFFF;
    font-weight: 750;
    left: 18px;
    padding: 11px 16px;
    position: fixed;
    top: 0;
    transform: translateY(-130%);
    transition: transform .15s ease;
    z-index: 100;
}

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

h1, h2, h3,
.brand,
.level-number,
.result-score strong {
    font-family: "Manrope", "Inter", ui-sans-serif, system-ui, sans-serif;
}

main, section, article, div {
    min-width: 0;
}

p, h1, h2, h3, strong, small, span, dd, dt {
    overflow-wrap: anywhere;
}

::selection {
    background: var(--highlight);
    color: var(--text-primary);
}

.site-header,
.app-header {
    background: rgba(248, 247, 242, .96);
    border-bottom: 1px solid var(--border);
    box-shadow: none;
    height: 84px;
    padding-inline: max(28px, calc((100vw - var(--content)) / 2));
}

.app-header::after,
.hero::before,
.subject-card::after,
.level-summary::after {
    display: none;
}

.brand {
    flex: 0 0 auto;
    line-height: 0;
}

.brand-logo {
    display: block;
    height: auto;
    max-width: 100%;
    object-fit: contain;
    width: 150px;
}

.brand-button {
    border-radius: 12px;
}

.public-nav {
    gap: 42px;
    margin-left: auto;
}

.public-nav a {
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: .94rem;
    font-weight: 600;
    padding: 10px 4px;
}

.public-nav a:hover {
    color: var(--primary);
}

.header-actions {
    border-left: 1px solid var(--border);
    margin-left: 42px;
    padding-left: 32px;
}

.button {
    border-radius: 13px;
    font-weight: 750;
    min-height: 46px;
    transition: background-color .16s ease, border-color .16s ease, color .16s ease, box-shadow .16s ease;
}

.button:hover {
    transform: none;
}

.button-primary {
    background: var(--primary);
    box-shadow: none;
    color: #FFFFFF;
}

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

.button-secondary {
    background: var(--surface);
    border-color: var(--border);
    color: var(--primary-hover);
}

.button-secondary:hover {
    background: var(--surface-soft);
    border-color: #AFC4B5;
}

.button-ghost {
    color: var(--primary-hover);
}

.button-ghost:hover {
    background: var(--surface-soft);
}

.button-light {
    background: #FFFFFF;
    color: var(--primary-hover);
}

.button-light:hover {
    background: var(--highlight);
}

.button:focus-visible,
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible,
.option-button:focus-visible {
    outline: 3px solid #86AA45;
    outline-offset: 3px;
}

.section {
    padding: 104px 28px;
}

.eyebrow {
    color: var(--primary);
    font-size: .75rem;
    letter-spacing: .22em;
}

.hero {
    align-items: center;
    gap: clamp(42px, 4vw, 58px);
    grid-template-columns: minmax(0, .9fr) minmax(500px, 1.1fr);
    min-height: 594px;
    padding-bottom: 38px;
    padding-top: 38px;
}

.hero-copy {
    max-width: 600px;
}

.hero h1 {
    color: var(--text-primary);
    font-size: clamp(3.25rem, 4.85vw, 4.35rem);
    letter-spacing: -.065em;
    line-height: 1.01;
}

.hero h1 span {
    background: none;
    color: inherit;
}

.hero-title-line {
    display: block;
}

.hero-text {
    color: var(--text-secondary);
    font-size: clamp(1.06rem, 1.4vw, 1.22rem);
    line-height: 1.62;
    margin: 26px 0 24px;
    max-width: 555px;
}

.hero-actions {
    margin-top: 4px;
}

.hero-actions .button-primary {
    min-width: 320px;
}

.button-large {
    min-height: 56px;
    padding: 14px 25px;
}

.supporting-copy {
    color: var(--text-secondary);
    margin: 11px 0 0;
}

.hero-facts {
    border-top: 1px solid var(--border);
    display: grid;
    gap: 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin: 32px 0 0;
    max-width: 560px;
    padding: 22px 0 0;
}

.hero-facts div {
    padding-right: 24px;
}

.hero-facts div + div {
    border-left: 1px solid var(--border);
    padding-left: 24px;
}

.hero-facts dt {
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    height: 1px;
    overflow: hidden;
    position: absolute;
    white-space: nowrap;
    width: 1px;
}

.hero-facts dd {
    font-weight: 700;
    margin: 0;
}

.learning-demo {
    background: var(--surface-soft);
    border: 1px solid #E1E9DF;
    border-radius: 20px;
    padding: clamp(24px, 2.4vw, 32px);
}

.demo-heading h2 {
    font-size: clamp(1.75rem, 3vw, 2.45rem);
    letter-spacing: -.045em;
    line-height: 1.1;
    margin: 0;
}

.demo-heading > p:last-child {
    color: var(--text-secondary);
    font-size: 1.12rem;
    margin: 3px 0 0;
}

.demo-map {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    list-style: none;
    margin: 24px 0 18px;
    padding: 0;
}

.demo-node {
    background: rgba(255, 255, 255, .82);
    border: 1px solid var(--border);
    border-left: 6px solid var(--border);
    border-radius: 16px;
    display: grid;
    gap: 3px;
    min-height: 68px;
    padding: 12px 16px;
}

.demo-node strong {
    font-size: .96rem;
}

.demo-node span {
    color: var(--text-secondary);
    font-size: .76rem;
}

.demo-node.is-complete {
    border-left-color: #168B64;
}

.demo-node.is-complete span {
    color: #0D6A4B;
}

.demo-node.is-review {
    border-left-color: var(--review);
}

.demo-node.is-review span {
    color: #923928;
}

.demo-node.is-locked {
    border-left-color: #82908B;
    opacity: .78;
}

.demo-next-step {
    background: var(--highlight);
    border: 1px solid #CDDF7D;
    border-radius: 18px;
    padding: 16px 20px;
}

.demo-next-step p {
    color: var(--primary-hover);
    font-size: .71rem;
    font-weight: 800;
    letter-spacing: .2em;
    margin: 0 0 7px;
    text-transform: uppercase;
}

.demo-next-step h3 {
    font-size: 1.25rem;
    letter-spacing: -.025em;
    margin: 0;
}

.demo-next-step span {
    color: #48613C;
}

.demo-caption {
    color: var(--text-secondary);
    font-size: .72rem;
    margin: 13px 2px 0;
}

.clarity-section {
    background: var(--primary-hover);
    color: #FFFFFF;
}

.clarity-inner {
    margin: 0 auto;
    max-width: var(--content);
    padding: 56px 28px 62px;
}

.clarity-inner > header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -.045em;
    line-height: 1.1;
    margin: 0;
}

.clarity-inner > header p {
    color: #CCE0BC;
    font-family: "Manrope", "Inter", sans-serif;
    font-size: clamp(1.7rem, 3.4vw, 2.7rem);
    font-weight: 650;
    letter-spacing: -.035em;
    line-height: 1.15;
    margin: 1px 0 34px;
}

.clarity-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    list-style: none;
    margin: 0;
    padding: 0;
}

.clarity-steps li {
    display: grid;
    gap: 18px;
    grid-template-columns: auto 1fr;
    padding: 10px 34px;
}

.clarity-steps li:first-child {
    padding-left: 0;
}

.clarity-steps li + li {
    border-left: 1px solid rgba(255, 255, 255, .25);
}

.clarity-steps > li > span {
    color: var(--highlight);
    font-family: "Manrope", sans-serif;
    font-size: 1.45rem;
    font-weight: 800;
}

.clarity-steps h3 {
    color: #FFFFFF;
    font-size: 1.08rem;
    margin: 2px 0 7px;
}

.clarity-steps p {
    color: #D5E0DD;
    line-height: 1.45;
    margin: 0;
}

.section-heading {
    max-width: 760px;
}

.section-heading h2,
.map-copy h2,
.final-cta h2 {
    color: var(--text-primary);
    font-size: clamp(2rem, 4vw, 3.1rem);
}

.feature-section {
    padding-top: 112px;
}

.feature-grid {
    gap: 0;
}

.feature-card {
    background: transparent;
    border: 0;
    border-left: 1px solid var(--border);
    border-radius: 0;
    box-shadow: none;
    min-height: 225px;
    padding: 26px 34px;
}

.feature-card:first-child {
    border-left: 0;
}

.feature-card::before {
    display: none;
}

.feature-card:hover {
    box-shadow: none;
    transform: none;
}

.feature-card > span,
.feature-card:nth-child(2) > span,
.feature-card:nth-child(3) > span {
    color: var(--primary);
}

.feature-card h3 {
    margin-top: 42px;
}

.map-showcase {
    gap: clamp(42px, 7vw, 86px);
}

.map-panel {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    box-shadow: none;
}

.skill-row {
    border: 1px solid transparent;
}

.trust-section {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.trust-section .eyebrow {
    color: var(--primary);
}

.trust-grid p,
.legal-note {
    color: var(--text-secondary);
}

.legal-note {
    border-top-color: var(--border);
}

.final-cta {
    background: var(--primary);
    box-shadow: none;
    gap: 40px;
}

.final-cta .eyebrow {
    color: var(--highlight);
}

.final-cta h2 {
    color: #FFFFFF;
    font-size: clamp(1.8rem, 3.2vw, 2.55rem);
    max-width: 780px;
}

.final-cta p:not(.eyebrow) {
    color: #D7E6E2;
    margin-bottom: 0;
}

.final-cta-actions {
    display: grid;
    flex: 0 0 auto;
    gap: 10px;
}

.site-footer {
    background: var(--background);
}

.auth-dialog::backdrop {
    background: rgba(13, 45, 42, .58);
}

.auth-card {
    background: var(--surface);
    box-shadow: var(--shadow);
}

.auth-brand {
    margin-bottom: 20px;
}

.field input,
.field select,
select.input {
    border-color: #AEBBB5;
}

.app-shell {
    background: var(--background);
}

.app-header {
    background: rgba(248, 247, 242, .97);
}

.demo-banner {
    background: var(--highlight);
    color: #364B2F;
}

.app-main {
    max-width: 1160px;
}

.app-page-head h1 {
    background: none;
    color: var(--text-primary);
}

.card {
    border-color: var(--border);
    box-shadow: var(--card-shadow);
}

.student-card,
.subject-card,
.guardian-task {
    background: var(--surface);
}

.student-card + .student-card {
    border-top: 1px solid var(--border);
    margin-top: 8px;
}

.subject-card {
    border-top: 4px solid var(--subject-accent, var(--primary));
}

.subject-card:hover {
    box-shadow: 0 12px 30px rgba(22, 61, 58, .09);
    transform: none;
}

.subject-card h2 {
    color: var(--text-primary);
}

.level-summary {
    background: var(--surface);
    border-top: 4px solid var(--primary);
}

.today-card {
    border-top: 4px solid #168B64;
}

.plan-item {
    background: #F6F8F4;
    border-color: var(--border);
}

.plan-item.inprogress {
    border-color: #D2BD6F;
    box-shadow: inset 4px 0 0 #9A7612;
}

.plan-item.completed {
    border-color: #B8D9CC;
    box-shadow: inset 4px 0 0 #168B64;
}

.plan-number {
    border-radius: 10px;
}

.plan-number.completed {
    color: #FFFFFF;
}

.week-day:hover {
    border-color: var(--primary);
    transform: none;
}

.week-day.today,
.week-day.selected {
    background: var(--surface-soft);
    border-color: var(--primary);
    box-shadow: inset 0 0 0 1px var(--primary);
}

.map-node {
    border-color: transparent;
}

.map-node:hover:not(:disabled) {
    border-color: var(--border);
    box-shadow: none;
}

.map-node.available {
    background: var(--surface-soft);
}

.map-node.inprogress {
    background: var(--amber-soft);
}

.map-node.completed {
    background: var(--teal-soft);
}

.lesson-hero {
    background: var(--primary-hover);
    border: 1px solid #0B4640;
    box-shadow: none;
}

.lesson-section,
.lesson-section.overview,
.lesson-section.concept,
.lesson-section.example,
.lesson-section.notebook,
.lesson-section.next {
    background: var(--surface);
}

.lesson-section .lesson-section-icon {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    box-shadow: none;
    color: var(--primary);
}

.lesson-media-card {
    background: #F6F8F4;
    box-shadow: none;
}

.image-media img {
    background: var(--surface-soft);
}

.option-button {
    color: var(--text-primary);
}

.option-button:hover {
    transform: none;
}

.option-button:hover,
.option-button.selected {
    background: var(--surface-soft);
    border-color: var(--primary);
}

.option-button::before {
    background: #F1F4EF;
    border-color: var(--border);
}

.notebook-review-card {
    background: var(--surface);
}

.result-hero {
    background: var(--primary-hover);
}

.result-score strong {
    color: var(--highlight);
}

.progress-bar {
    background: var(--primary);
}

.exam-source {
    background: var(--surface-soft);
    border-color: var(--border);
    color: var(--text-primary);
}

.exam-source a {
    color: var(--primary);
}

.daily-summary > div,
.daily-summary > div:nth-child(2),
.daily-summary > div:nth-child(3),
.daily-summary > div:nth-child(4) {
    border-color: var(--primary);
}

.guardian-task {
    background: var(--surface);
}

.guardian-task.completed {
    border-left-color: #168B64;
}

.guardian-task.inprogress {
    border-left-color: #8C6B0B;
}

.teacher-plan {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-left: 4px solid var(--primary);
    border-radius: 14px;
    margin-top: 18px;
    padding: 16px;
}

.teacher-plan-heading {
    align-items: flex-start;
    display: flex;
    gap: 14px;
    justify-content: space-between;
}

.teacher-plan-heading h3 {
    font-size: 1.05rem;
    margin: 0;
}

.teacher-assignment-label {
    background: var(--highlight);
    border-radius: 999px;
    color: var(--text-primary);
    display: inline-flex;
    font-size: .66rem;
    font-weight: 800;
    padding: 5px 9px;
    width: fit-content;
}

.plan-item.teacher-assigned {
    background: var(--surface);
}

.assignment-note {
    border-left: 3px solid var(--highlight);
    color: var(--text-primary) !important;
    margin-top: 5px;
    padding-left: 8px;
}

.adaptive-plan-heading {
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .08em;
    margin-top: 22px;
    padding-top: 18px;
    text-transform: uppercase;
}

.guardian-task.teacher-assigned {
    border-left: 4px solid var(--primary);
}

.guardian-task .teacher-assignment-label {
    margin: 4px 0 7px;
}

@media (max-width: 1000px) {
    .site-header,
    .app-header {
        padding-inline: 24px;
    }

    .hero {
        grid-template-columns: minmax(0, .9fr) minmax(440px, 1.1fr);
    }
}

@media (max-width: 900px) {
    .public-nav {
        display: none;
    }

    .header-actions {
        border-left: 0;
        margin-left: auto;
        padding-left: 18px;
    }

    .hero,
    .map-showcase,
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .hero {
        gap: 44px;
        min-height: auto;
        padding-bottom: 64px;
        padding-top: 64px;
    }

    .hero-copy {
        max-width: 680px;
    }

    .learning-demo {
        width: 100%;
    }

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

    .clarity-steps li,
    .clarity-steps li:first-child {
        padding: 22px 0;
    }

    .clarity-steps li + li {
        border-left: 0;
        border-top: 1px solid rgba(255, 255, 255, .25);
    }

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

    .feature-card,
    .feature-card:first-child {
        border-left: 0;
        border-top: 1px solid var(--border);
        min-height: 0;
        padding: 32px 0;
    }

    .feature-card:first-child {
        border-top: 0;
    }

    .feature-card h3 {
        margin-top: 18px;
    }

    .trust-section {
        border-radius: 20px;
    }

    .final-cta {
        align-items: flex-start;
    }
}

@media (max-width: 600px) {
    .site-header,
    .app-header {
        height: 72px;
        padding-inline: 18px;
    }

    .brand-logo {
        width: 112px;
    }

    .header-actions {
        gap: 6px;
        padding-left: 8px;
    }

    .header-actions .button-ghost {
        display: none;
    }

    .header-actions .button {
        font-size: .77rem;
        min-height: 44px;
        padding: 9px 12px;
    }

    .section {
        padding: 74px 18px;
    }

    .hero {
        padding-bottom: 48px;
        padding-top: 44px;
    }

    .hero h1 {
        font-size: clamp(2.75rem, 13vw, 3.45rem);
    }

    .hero-text {
        font-size: 1.02rem;
    }

    .hero-actions {
        align-items: stretch;
    }

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

    .hero-actions .button-primary {
        min-width: 0;
    }

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

    .hero-facts div {
        padding: 0;
    }

    .hero-facts div + div {
        border-left: 0;
        border-top: 1px solid var(--border);
        margin-top: 14px;
        padding: 14px 0 0;
    }

    .learning-demo {
        padding: 24px 20px;
    }

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

    .demo-node {
        min-height: 0;
    }

    .clarity-inner {
        padding: 48px 18px 52px;
    }

    .clarity-steps li {
        grid-template-columns: 42px 1fr;
    }

    .trust-section {
        border-left: 0;
        border-radius: 0;
        border-right: 0;
        margin-inline: 0;
    }

    .final-cta {
        border-radius: 0;
        margin-bottom: 48px;
        margin-inline: 0;
        padding: 46px 22px;
    }

    .final-cta-actions,
    .final-cta-actions .button {
        width: 100%;
    }

    .site-footer {
        padding-inline: 18px;
    }

    .app-main {
        padding: 34px 16px 72px;
    }

    .app-page-head {
        align-items: flex-start;
    }

    .card {
        border-radius: 16px;
        padding: 20px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: .01ms !important;
    }
}