:root {
    color-scheme: dark;
    --bg: #090b16;
    --bg-soft: #12162a;
    --text: #f3f6ff;
    --muted: #a8b2d4;
    --line: rgba(255,255,255,.08);
    --card: rgba(17, 21, 40, .82);
    --glass: rgba(255,255,255,.07);
    --primary: #7c5cff;
    --secondary: #11d3ff;
    --pink: #ff4fa7;
    --green: #66e6a7;
    --orange: #ffb74d;
    --danger: #ff6b6b;
    --shadow: 0 24px 80px rgba(0, 0, 0, .35);
    --radius: 28px;
    --bg-gradient:
      radial-gradient(circle at top left, rgba(124,92,255,.35), transparent 30%),
      radial-gradient(circle at top right, rgba(17,211,255,.25), transparent 28%),
      radial-gradient(circle at bottom center, rgba(255,79,167,.18), transparent 30%),
      linear-gradient(180deg, #080a12 0%, #0c1020 100%);
    --header-bg: rgba(9,11,22,.55);
    --nav-link: #e9efff;
    --badge-bg: rgba(255,255,255,.09);
    --badge-border: rgba(255,255,255,.08);
    --badge-text: #fff;
    --secondary-btn-text: #fff;
    --secondary-btn-bg: linear-gradient(135deg, rgba(255,255,255,.1), rgba(255,255,255,.05));
    --secondary-btn-border: rgba(255,255,255,.1);
    --mini-bg: rgba(255,255,255,.05);
    --mini-border: rgba(255,255,255,.08);
    --preview-border: rgba(255,255,255,.12);
    --preview-shadow: 0 14px 40px rgba(0,0,0,.2);
    --color-a: linear-gradient(180deg, rgba(124,92,255,.18), rgba(255,255,255,.04));
    --color-b: linear-gradient(180deg, rgba(17,211,255,.14), rgba(255,255,255,.04));
    --color-c: linear-gradient(180deg, rgba(255,79,167,.14), rgba(255,255,255,.04));
    --nested-bg: rgba(255,255,255,.04);
    --timeline-bg: rgba(255,255,255,.04);
    --timeline-border: rgba(255,255,255,.06);
    --label-text: #dde5ff;
    --input-bg: rgba(255,255,255,.04);
    --input-text: #fff;
    --input-border: rgba(255,255,255,.1);
    --select-option-bg: #11162a;
    --select-option-text: #f3f6ff;
    --success-bg: rgba(102,230,167,.12);
    --success-border: rgba(102,230,167,.35);
    --success-text: #cbffe4;
    --error-bg: rgba(255,107,107,.12);
    --error-border: rgba(255,107,107,.35);
    --error-text: #ffd4d4;
    --text-link: #9ed6ff;
    --table-border: rgba(255,255,255,.08);
    --th-text: #c9d5ff;
    --td-text: #edf2ff;
    --log-bg: rgba(255,255,255,.04);
    --log-border: rgba(255,255,255,.07);
    --footer-bg: rgba(8,10,18,.8);
    --code-text: #c4e8ff;
}
html[data-theme="light"] {
    color-scheme: light;
    --bg: #f5f7fb;
    --bg-soft: #ffffff;
    --text: #162033;
    --muted: #66738f;
    --line: rgba(22, 32, 51, .10);
    --card: rgba(255, 255, 255, .92);
    --glass: rgba(255, 255, 255, .72);
    --primary: #6b5cff;
    --secondary: #14b8ff;
    --pink: #ff5ea8;
    --green: #43d39e;
    --orange: #ffb347;
    --danger: #ff6b6b;
    --shadow: 0 24px 80px rgba(30, 41, 59, .12);
    --bg-gradient:
      radial-gradient(circle at top left, rgba(107,92,255,.14), transparent 30%),
      radial-gradient(circle at top right, rgba(20,184,255,.12), transparent 28%),
      radial-gradient(circle at bottom center, rgba(255,94,168,.10), transparent 30%),
      linear-gradient(180deg, #f9fbff 0%, #eef3ff 100%);
    --header-bg: rgba(255,255,255,.78);
    --nav-link: #34425f;
    --badge-bg: rgba(107,92,255,.08);
    --badge-border: rgba(107,92,255,.10);
    --badge-text: #24314d;
    --secondary-btn-text: var(--text);
    --secondary-btn-bg: linear-gradient(135deg, rgba(255,255,255,.92), rgba(245,247,251,.96));
    --secondary-btn-border: rgba(22,32,51,.10);
    --mini-bg: rgba(255,255,255,.84);
    --mini-border: rgba(22,32,51,.08);
    --preview-border: rgba(22,32,51,.10);
    --preview-shadow: 0 14px 40px rgba(30,41,59,.08);
    --color-a: linear-gradient(180deg, rgba(107,92,255,.10), rgba(255,255,255,.86));
    --color-b: linear-gradient(180deg, rgba(20,184,255,.10), rgba(255,255,255,.86));
    --color-c: linear-gradient(180deg, rgba(255,94,168,.10), rgba(255,255,255,.86));
    --nested-bg: rgba(22,32,51,.03);
    --timeline-bg: rgba(255,255,255,.82);
    --timeline-border: rgba(22,32,51,.08);
    --label-text: #22304d;
    --input-bg: #ffffff;
    --input-text: var(--text);
    --input-border: rgba(22,32,51,.12);
    --select-option-bg: #ffffff;
    --select-option-text: #162033;
    --success-bg: rgba(67,211,158,.12);
    --success-border: rgba(67,211,158,.32);
    --success-text: #17684d;
    --error-bg: rgba(255,107,107,.12);
    --error-border: rgba(255,107,107,.30);
    --error-text: #a73838;
    --text-link: #4f46e5;
    --table-border: rgba(22,32,51,.08);
    --th-text: #52627f;
    --td-text: #1f2b44;
    --log-bg: rgba(255,255,255,.84);
    --log-border: rgba(22,32,51,.07);
    --footer-bg: rgba(255,255,255,.72);
    --code-text: #2563eb;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: inherit; text-decoration: none; }
code { color: var(--code-text); }
body { min-height: 100vh; position: relative; overflow-x: hidden; transition: background-color .25s ease, color .25s ease; }
.page-bg {
    position: fixed; inset: 0; z-index: -2;
    background: var(--bg-gradient);
}
.container { width: min(1220px, calc(100% - 32px)); margin: 0 auto; }
.site-header { position: sticky; top: 0; z-index: 50; backdrop-filter: blur(18px); background: var(--header-bg); border-bottom: 1px solid var(--line); }
.topbar { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: flex; align-items: center; gap: 14px; }
.brand-mark {
    width: 44px; height: 44px; border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--pink));
    box-shadow: 0 0 30px rgba(124,92,255,.4);
}
.brand strong { display: block; font-size: 18px; }
.brand small { color: var(--muted); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.main-nav { display: flex; flex-wrap: wrap; gap: 18px; align-items:center; }
.main-nav a { color: var(--nav-link); opacity: .95; transition: .25s ease; }
.main-nav a:hover { color: var(--text); transform: translateY(-1px); }
.theme-toggle {
    appearance: none; border: 1px solid var(--line); background: var(--card); color: var(--text);
    border-radius: 999px; min-height: 42px; padding: 0 16px; display: inline-flex; align-items: center; gap: 10px;
    font-weight: 700; cursor: pointer; box-shadow: 0 10px 25px rgba(0,0,0,.08); transition: transform .2s ease, background .25s ease, border-color .25s ease;
}
.theme-toggle:hover { transform: translateY(-1px); }
.theme-toggle .theme-icon { font-size: 16px; line-height: 1; }
.main-content { padding: 36px 0 60px; }
.card {
    background: var(--card); border: 1px solid var(--line);
    border-radius: var(--radius); box-shadow: var(--shadow); padding: 28px;
}
.glass { background: linear-gradient(180deg, color-mix(in srgb, var(--card) 92%, transparent), color-mix(in srgb, var(--glass) 100%, transparent)); }
.nested { padding: 20px; box-shadow: none; background: var(--nested-bg); }
.hero { display: grid; grid-template-columns: 1.15fr .85fr; gap: 26px; align-items: stretch; }
.hero h1 { font-size: clamp(36px, 5vw, 64px); line-height: 1.02; margin: 16px 0 18px; }
.hero p { color: var(--muted); font-size: 18px; line-height: 1.65; }
.badge, .chip {
    display: inline-flex; align-items: center; gap: 8px; padding: 9px 14px;
    border-radius: 999px; background: var(--badge-bg); border: 1px solid var(--badge-border);
    color: var(--badge-text); font-size: 13px; font-weight: 700; letter-spacing: .02em;
}
.hero-actions, .form-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 24px; }
.btn {
    display: inline-flex; align-items: center; justify-content: center; min-height: 50px;
    padding: 0 22px; border-radius: 16px; border: 0; cursor: pointer; font-weight: 800;
    transition: transform .25s ease, box-shadow .25s ease, opacity .25s ease;
}
.btn:hover { transform: translateY(-2px) scale(1.01); }
.btn.primary { color: #fff; background: linear-gradient(135deg, var(--primary), var(--pink)); box-shadow: 0 14px 40px rgba(124,92,255,.35); }
.btn.secondary { color: var(--secondary-btn-text); background: var(--secondary-btn-bg); border: 1px solid var(--secondary-btn-border); }
.hero-stats, .admin-stats, .section-grid, .module-grid, .preview-grid { display: grid; gap: 16px; }
.hero-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 28px; }
.hero-stats div, .mini-stat {
    padding: 18px; border-radius: 20px; background: var(--mini-bg); border: 1px solid var(--mini-border);
}
.hero-stats strong, .mini-stat strong, .stat-card strong { display: block; font-size: 28px; margin-bottom: 6px; }
.hero-visual { position: relative; min-height: 480px; overflow: hidden; }
.dashboard-preview { position: relative; z-index: 2; }
.preview-row { display: flex; gap: 8px; margin-bottom: 18px; }
.dot { width: 12px; height: 12px; border-radius: 50%; display: inline-block; }
.dot.pink { background: var(--pink); }
.dot.blue { background: var(--secondary); }
.dot.green { background: var(--green); }
.preview-panel { border-radius: 24px; min-height: 92px; border: 1px solid var(--preview-border); box-shadow: var(--preview-shadow); }
.preview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-top: 18px; }
.gradient-a { background: linear-gradient(135deg, rgba(124,92,255,.9), rgba(17,211,255,.65)); }
.gradient-b { background: linear-gradient(135deg, rgba(255,79,167,.8), rgba(124,92,255,.7)); }
.gradient-c { background: linear-gradient(135deg, rgba(102,230,167,.75), rgba(17,211,255,.55)); }
.gradient-d { background: linear-gradient(135deg, rgba(255,183,77,.85), rgba(255,79,167,.65)); }
.gradient-e { background: linear-gradient(135deg, rgba(72,91,255,.7), rgba(102,230,167,.7)); }
.orb { position: absolute; border-radius: 999px; filter: blur(20px); opacity: .8; animation: float 7s ease-in-out infinite; }
.orb-1 { width: 200px; height: 200px; background: rgba(124,92,255,.25); top: 20px; right: 20px; }
.orb-2 { width: 180px; height: 180px; background: rgba(17,211,255,.2); bottom: 50px; left: 10px; animation-delay: 1.2s; }
.orb-3 { width: 130px; height: 130px; background: rgba(255,79,167,.22); bottom: 30px; right: 90px; animation-delay: 2.4s; }
.section-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); margin-top: 24px; }
.feature-card { min-height: 180px; }
.feature-card p, .roadmap p, .module-card p, .helper-text { color: var(--muted); line-height: 1.65; }
.color-a { background: var(--color-a); }
.color-b { background: var(--color-b); }
.color-c { background: var(--color-c); }
.roadmap { margin-top: 24px; }
.section-heading h1, .section-heading h2 { margin: 8px 0 0; font-size: clamp(28px, 4vw, 42px); }
.inline-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-top: 20px; }
.timeline-item { padding: 20px; border-radius: 20px; background: var(--timeline-bg); border: 1px solid var(--timeline-border); }
.timeline-item strong { display: block; margin-bottom: 10px; font-size: 18px; }
.timeline-item span { color: var(--muted); }
.auth-wrap { display: flex; justify-content: center; }
.auth-card { width: min(560px, 100%); }
.auth-card.wide { width: min(920px, 100%); }
.form-grid { display: grid; gap: 16px; margin-top: 18px; }
.form-grid.two-cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.form-grid .full { grid-column: 1 / -1; }
label span { display: block; margin-bottom: 10px; color: var(--label-text); font-weight: 700; }
input, textarea, select {
    width: 100%; min-height: 54px; border-radius: 16px; border: 1px solid var(--input-border);
    background: var(--input-bg); color: var(--input-text); padding: 0 16px; outline: none;
    color-scheme: dark;
}
html[data-theme="light"] input,
html[data-theme="light"] textarea,
html[data-theme="light"] select {
    color-scheme: light;
}
select option,
select optgroup {
    background: var(--select-option-bg);
    color: var(--select-option-text);
}
select option:checked {
    background: var(--primary);
    color: #ffffff;
}
textarea { padding: 14px 16px; min-height: 140px; resize: vertical; }
input:focus, textarea:focus, select:focus { border-color: rgba(17,211,255,.7); box-shadow: 0 0 0 4px rgba(17,211,255,.12); }
.alert { margin-bottom: 18px; padding: 16px 18px; border-radius: 18px; border: 1px solid transparent; }
.alert.success { background: var(--success-bg); border-color: var(--success-border); color: var(--success-text); }
.alert.error { background: var(--error-bg); border-color: var(--error-border); color: var(--error-text); }
.dashboard-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 24px; }
.panel { min-height: 240px; }
.stats-panel { display: grid; gap: 14px; align-content: start; }
.module-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.module-grid.compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.module-card-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.module-icon { font-size: 34px; }
.text-link { margin-top: 10px; display: inline-block; color: var(--text-link); font-weight: 700; }
.status-active { background: rgba(102,230,167,.14); }
.status-planned, .status-development { background: rgba(255,183,77,.16); }
.status-disabled { background: rgba(255,107,107,.14); }
.admin-stats { grid-template-columns: repeat(4, minmax(0, 1fr)); margin-bottom: 24px; }
.stat-card { min-height: 132px; display: flex; flex-direction: column; justify-content: end; }
.admin-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.second-row { margin-top: 24px; }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 14px 10px; border-bottom: 1px solid var(--table-border); }
th { color: var(--th-text); font-size: 14px; }
td { color: var(--td-text); }
.log-list { display: grid; gap: 14px; }
.log-item { padding: 16px; border-radius: 18px; background: var(--log-bg); border: 1px solid var(--log-border); }
.log-item p { margin: 8px 0; color: var(--muted); }
.site-footer { border-top: 1px solid var(--line); background: var(--footer-bg); padding: 36px 0; }
.footer-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.footer-grid p { color: var(--muted); line-height: 1.65; }
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-18px); }
}
@media (max-width: 1024px) {
    .hero, .dashboard-grid, .admin-layout, .timeline, .footer-grid, .section-grid, .module-grid, .module-grid.compact, .admin-stats { grid-template-columns: 1fr 1fr; }
    .hero { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
    .topbar { flex-direction: column; justify-content: center; padding: 14px 0; }
    .header-actions { flex-direction: column; width: 100%; }
    .main-nav { justify-content: center; }
    .hero-stats, .section-grid, .timeline, .dashboard-grid, .module-grid, .module-grid.compact, .admin-layout, .footer-grid, .admin-stats, .form-grid.two-cols { grid-template-columns: 1fr; }
    .card { padding: 22px; border-radius: 22px; }
    .hero h1 { font-size: 34px; }
}

/* Stage 2.15: multi-institution registration helpers */
.auth-card.wide-card{max-width:860px;width:100%;}
.form-grid .full-row{grid-column:1/-1;}
.table-wrap form .btn{padding:8px 12px;border-radius:12px;}

/* Stage 2.17: live ecosystem preview on homepage */
.live-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.ecosystem-widget {
    position: relative;
    min-height: 560px;
    overflow: hidden;
    padding: 22px;
}
.ecosystem-window {
    position: relative;
    z-index: 2;
    display: grid;
    gap: 16px;
}
.ecosystem-window-dots { margin-bottom: 2px; }
.ecosystem-main-card {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 18px;
    align-items: stretch;
    padding: 20px;
    border-radius: 26px;
    border: 1px solid var(--preview-border);
    background:
        radial-gradient(circle at top left, rgba(124,92,255,.18), transparent 40%),
        radial-gradient(circle at bottom right, rgba(17,211,255,.16), transparent 40%),
        var(--mini-bg);
    box-shadow: var(--preview-shadow);
}
.ecosystem-main-card h2 {
    margin: 12px 0 8px;
    font-size: clamp(22px, 3vw, 34px);
    line-height: 1.08;
}
.ecosystem-main-card p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}
.ecosystem-status {
    min-width: 132px;
    border-radius: 22px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: linear-gradient(135deg, rgba(102,230,167,.18), rgba(17,211,255,.12));
    border: 1px solid rgba(102,230,167,.24);
    text-align: center;
}
.ecosystem-status strong {
    font-size: 34px;
    line-height: 1;
}
.ecosystem-status span {
    margin-top: 8px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}
.ecosystem-card-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}
.ecosystem-card {
    min-height: 142px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 10px;
    padding: 18px;
    border-radius: 24px;
    border: 1px solid var(--preview-border);
    background: var(--mini-bg);
    box-shadow: var(--preview-shadow);
    transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
    overflow: hidden;
    position: relative;
}
.ecosystem-card::before {
    content: '';
    position: absolute;
    inset: -40% -20% auto auto;
    width: 130px;
    height: 130px;
    border-radius: 999px;
    opacity: .45;
    filter: blur(6px);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}
.ecosystem-card:hover {
    transform: translateY(-3px);
    border-color: rgba(17,211,255,.45);
    box-shadow: 0 18px 48px rgba(0,0,0,.16);
}
.ecosystem-card strong,
.ecosystem-card small,
.ecosystem-icon {
    position: relative;
    z-index: 1;
}
.ecosystem-card strong {
    font-size: 17px;
}
.ecosystem-card small {
    color: var(--muted);
    line-height: 1.45;
}
.ecosystem-icon {
    width: 44px;
    height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: rgba(255,255,255,.10);
    border: 1px solid var(--line);
    font-size: 22px;
}
.accent-blue::before { background: linear-gradient(135deg, rgba(124,92,255,.9), rgba(17,211,255,.75)); }
.accent-cyan::before { background: linear-gradient(135deg, rgba(17,211,255,.8), rgba(102,230,167,.7)); }
.accent-violet::before { background: linear-gradient(135deg, rgba(124,92,255,.85), rgba(255,79,167,.65)); }
.accent-pink::before { background: linear-gradient(135deg, rgba(255,79,167,.8), rgba(255,183,77,.72)); }
.accent-green::before { background: linear-gradient(135deg, rgba(102,230,167,.8), rgba(17,211,255,.56)); }
.accent-orange::before { background: linear-gradient(135deg, rgba(255,183,77,.86), rgba(255,79,167,.62)); }
.accent-mint::before { background: linear-gradient(135deg, rgba(102,230,167,.78), rgba(124,92,255,.54)); }
.ecosystem-bottom {
    display: grid;
    grid-template-columns: 1.25fr .75fr;
    gap: 14px;
}
.ecosystem-feed,
.ecosystem-module-list {
    padding: 18px;
    border-radius: 24px;
    border: 1px solid var(--preview-border);
    background: var(--mini-bg);
    box-shadow: var(--preview-shadow);
}
.ecosystem-feed > strong,
.ecosystem-module-list > strong {
    display: block;
    margin-bottom: 12px;
}
.ecosystem-feed-row {
    display: grid;
    gap: 5px;
    padding: 11px 0;
    border-top: 1px solid var(--line);
}
.ecosystem-feed-row:first-of-type { border-top: 0; padding-top: 0; }
.ecosystem-feed-row span {
    color: var(--text);
    font-weight: 800;
    font-size: 13px;
}
.ecosystem-feed-row em {
    color: var(--muted);
    font-style: normal;
    line-height: 1.45;
    font-size: 13px;
}
.ecosystem-module-list {
    display: grid;
    align-content: start;
    gap: 10px;
}
.ecosystem-module-list a {
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 10px 12px;
    border-radius: 16px;
    background: var(--nested-bg);
    border: 1px solid var(--line);
    color: var(--nav-link);
    font-weight: 700;
    font-size: 13px;
    transition: transform .2s ease, color .2s ease, border-color .2s ease;
}
.ecosystem-module-list a:hover {
    transform: translateX(2px);
    color: var(--text);
    border-color: rgba(17,211,255,.35);
}
@media (max-width: 1024px) {
    .ecosystem-widget { min-height: auto; }
}
@media (max-width: 720px) {
    .live-stats,
    .ecosystem-main-card,
    .ecosystem-card-grid,
    .ecosystem-bottom { grid-template-columns: 1fr; }
    .ecosystem-status { min-width: 0; }
    .ecosystem-widget { padding: 18px; }
}

/* Stage 3.3 — institution sync selector */
.auth-wrap-wide {
    align-items: flex-start;
}
.auth-card-wide,
.auth-card.auth-card-wide {
    width: min(920px, 100%);
}
.field-wide,
.form-grid .field-wide {
    grid-column: 1 / -1;
}
.institution-choice-form {
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--nested-bg);
}
.form-divider {
    display: flex;
    align-items: center;
    gap: 14px;
    margin: 26px 0 8px;
    color: var(--muted);
    font-weight: 800;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: .08em;
}
.form-divider::before,
.form-divider::after {
    content: '';
    height: 1px;
    flex: 1;
    background: var(--line);
}
.compact-empty {
    margin-top: 18px;
    padding: 18px;
    border: 1px dashed var(--line);
    border-radius: 20px;
    background: var(--nested-bg);
}
.compact-empty h2 {
    margin: 0 0 6px;
    font-size: 20px;
}

/* Stage 4.3 — Lessons module */
.classroom-stats .stat-card span { color: rgba(255,255,255,.9); font-weight: 800; }
.classroom-filter-card { margin-bottom: 24px; }
.classroom-filter {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr auto;
    gap: 14px;
    align-items: end;
}
.classroom-filter label span,
.classroom-editor label span,
.classroom-details-form label span,
.classroom-comment-form label span,
.classroom-grade-form label span { display:block; margin-bottom:10px; color:var(--label-text); font-weight:800; }
.classroom-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 24px;
}
.classroom-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 330px;
}
.classroom-card h2 { margin: 0; font-size: 23px; line-height: 1.2; }
.classroom-card p { color: var(--muted); line-height: 1.6; }
.classroom-meta,
.classroom-mini-stats,
.classroom-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.classroom-meta span,
.classroom-mini-stats span {
    display: inline-flex;
    align-items: center;
    min-height: 34px;
    padding: 7px 11px;
    border-radius: 999px;
    background: var(--nested-bg);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
    font-weight: 700;
}
.classroom-mini-stats.vertical { margin-top: 20px; flex-direction: column; align-items: flex-start; }
.classroom-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 24px;
    margin-bottom: 24px;
}
.classroom-main,
.classroom-side,
.classroom-section { margin-bottom: 24px; }
.classroom-side { align-self: start; position: sticky; top: 100px; }
.classroom-side h2 { margin-top: 0; }
.classroom-side .text-link { display: block; margin: 12px 0; }
.classroom-lead {
    padding: 18px;
    border-radius: 20px;
    background: var(--nested-bg);
    border: 1px solid var(--line);
    color: var(--muted);
    line-height: 1.7;
}
.classroom-content {
    margin-top: 18px;
    line-height: 1.75;
    font-size: 16px;
    color: var(--text);
}
.classroom-list { display: grid; gap: 14px; }
.classroom-list-item,
.classroom-task,
.classroom-submission-card,
.classroom-comment {
    padding: 18px;
    border-radius: 22px;
    background: var(--nested-bg);
    border: 1px solid var(--line);
}
.classroom-list-item {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 16px;
    align-items: start;
}
.classroom-list-item h3,
.classroom-task h3 { margin: 12px 0 8px; }
.classroom-list-item p,
.classroom-task p,
.classroom-submission-card p,
.classroom-comment p { color: var(--muted); line-height: 1.65; }
.classroom-task { display: grid; gap: 16px; }
.classroom-submissions { display: grid; gap: 12px; margin-top: 8px; }
.classroom-submission-card { display: grid; gap: 10px; }
.classroom-submission-card small,
.classroom-comment small { color: var(--muted); }
.classroom-files { display: grid; gap: 8px; }
.classroom-details-form {
    margin-top: 18px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: var(--nested-bg);
    padding: 0;
    overflow: hidden;
}
.classroom-details-form summary {
    cursor: pointer;
    padding: 18px 20px;
    font-weight: 900;
    color: var(--text);
}
.classroom-details-form form { padding: 0 20px 20px; }
.classroom-check {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 52px;
}
.classroom-check input { width: auto; min-height: auto; }
.classroom-check span { margin: 0 !important; }
.classroom-comments { display: grid; gap: 12px; }
.classroom-comment-form { margin-top: 18px; }
.classroom-grade-form { margin-top: 10px; }
.classroom-delete-form { margin-top: 4px; }
.btn.small,
.classroom-card .btn.small { min-height: 40px; padding: 0 15px; border-radius: 13px; font-size: 13px; }
.status-draft { background: rgba(255,183,77,.16); }
.status-published { background: rgba(102,230,167,.14); }
.status-archived { background: rgba(255,255,255,.08); }
.status-submitted { background: rgba(17,211,255,.14); }
.status-checked,
.status-accepted { background: rgba(102,230,167,.14); }
.status-needs_revision { background: rgba(255,183,77,.16); }
@media (max-width: 1024px) {
    .classroom-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .classroom-layout { grid-template-columns: 1fr; }
    .classroom-side { position: static; }
    .classroom-filter { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
    .classroom-grid,
    .classroom-filter,
    .classroom-list-item { grid-template-columns: 1fr; }
    .classroom-card { min-height: auto; }
}

/* Stage 4.2 — Lessons control patch */
.classroom-card-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}
.classroom-card-actions form,
.classroom-manage-actions form,
.classroom-file-row form,
.classroom-progress-form,
.classroom-delete-form { margin: 0; }
.classroom-manage-actions {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-end;
    min-width: 150px;
}
.classroom-inline-editor {
    width: min(560px, 100%);
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--card-bg);
    overflow: hidden;
}
.classroom-inline-editor summary {
    cursor: pointer;
    padding: 10px 12px;
    font-weight: 900;
    color: var(--text);
}
.classroom-inline-editor form { padding: 12px; }
.classroom-task-editor { margin-top: 10px; }
.classroom-progress-form {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}
.classroom-file-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: 14px;
    background: var(--card-bg);
    border: 1px solid var(--line);
}
.classroom-submission-table {
    display: grid;
    gap: 14px;
}
@media (max-width: 720px) {
    .classroom-manage-actions { align-items: stretch; }
    .classroom-inline-editor { width: 100%; }
    .classroom-file-row { align-items: flex-start; }
}

/* Stage 4.4 — Уроки: особистий кабінет, дедлайни, сповіщення */
.lessons-dashboard-stats {
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.lessons-workbench {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 18px;
    margin-top: 18px;
}

.lessons-workbench-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.lessons-workbench-card h2 {
    margin: 0;
    font-size: 1.15rem;
}

.compact-submission-card {
    margin-top: 4px;
    padding: 12px;
}

.classroom-side .text-link {
    display: block;
    margin: 6px 0;
}

.chip.status-overdue,
.chip.status-needs_revision {
    border-color: rgba(220, 38, 38, .35);
    background: rgba(220, 38, 38, .10);
}

.chip.status-submitted {
    border-color: rgba(245, 158, 11, .40);
    background: rgba(245, 158, 11, .12);
}

.chip.status-checked,
.chip.status-accepted,
.chip.status-published,
.chip.status-done {
    border-color: rgba(22, 163, 74, .35);
    background: rgba(22, 163, 74, .10);
}

[data-theme="dark"] .chip.status-overdue,
[data-theme="dark"] .chip.status-needs_revision {
    background: rgba(248, 113, 113, .14);
}

[data-theme="dark"] .chip.status-submitted {
    background: rgba(251, 191, 36, .14);
}

[data-theme="dark"] .chip.status-checked,
[data-theme="dark"] .chip.status-accepted,
[data-theme="dark"] .chip.status-published,
[data-theme="dark"] .chip.status-done {
    background: rgba(74, 222, 128, .14);
}

/* Stage 4.5 — Уроки: звіти і контроль проходження */
.lessons-report-stats {
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}

.lessons-report-card {
    margin-top: 18px;
}

.classroom-report-table-wrap {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--card-bg);
}

.classroom-report-table {
    width: 100%;
    min-width: 920px;
    border-collapse: collapse;
    font-size: .92rem;
}

.classroom-report-table th,
.classroom-report-table td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
}

.classroom-report-table th {
    color: var(--muted);
    font-weight: 800;
    background: rgba(100, 116, 139, .06);
}

.classroom-report-table tbody tr:last-child td {
    border-bottom: 0;
}

.classroom-report-table small {
    color: var(--muted);
}

.classroom-report-matrix th:not(:first-child),
.classroom-report-matrix td:not(:first-child) {
    min-width: 150px;
}

@media print {
    body {
        background: #fff !important;
    }
    .lessons-no-print,
    .site-header,
    .site-footer,
    .main-nav,
    .mobile-nav,
    .theme-toggle,
    .alert {
        display: none !important;
    }
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        break-inside: avoid;
    }
    .classroom-report-table-wrap {
        overflow: visible !important;
        border: 0 !important;
    }
    .classroom-report-table {
        min-width: 0 !important;
        font-size: 11px;
    }
    .classroom-report-table th,
    .classroom-report-table td {
        padding: 8px;
    }
}

/* Stage 4.6 — Уроки: календар уроків і дедлайнів */
.lessons-calendar-filter {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

.lessons-calendar {
    display: grid;
    gap: 18px;
    margin-bottom: 24px;
}

.lessons-calendar-day {
    display: grid;
    grid-template-columns: 170px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
}

.lessons-calendar-day.is-today {
    border-color: rgba(124, 58, 237, .35);
}

.lessons-calendar-date {
    position: sticky;
    top: 90px;
    display: grid;
    gap: 6px;
    padding: 14px;
    border-radius: 18px;
    background: var(--nested-bg);
    border: 1px solid var(--line);
}

.lessons-calendar-date strong {
    font-size: 1.15rem;
}

.lessons-calendar-date span {
    color: var(--muted);
    font-weight: 800;
}

.lessons-calendar-events {
    display: grid;
    gap: 12px;
}

.lessons-calendar-event {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 14px;
    align-items: center;
    padding: 16px;
    border-radius: 20px;
    background: var(--nested-bg);
    border: 1px solid var(--line);
}

.lessons-calendar-event.deadline-event {
    border-left: 5px solid rgba(124, 58, 237, .45);
}

.lessons-calendar-event.lesson-event {
    border-left: 5px solid rgba(14, 165, 233, .35);
}

.lessons-calendar-event h3 {
    margin: 10px 0 6px;
    font-size: 1.05rem;
}

.lessons-calendar-event p,
.lessons-calendar-event small {
    color: var(--muted);
}

.lessons-calendar-event p {
    margin: 0 0 4px;
    line-height: 1.55;
}

@media (max-width: 760px) {
    .lessons-calendar-day,
    .lessons-calendar-event {
        grid-template-columns: 1fr;
    }
    .lessons-calendar-date {
        position: static;
    }
}

/* Stage 4.7 — lesson copying */
.classroom-copy-form .form-label{
    display:block;
    font-weight:800;
    color:var(--text, #14213d);
    margin:0 0 10px;
}
.classroom-checkbox-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
    gap:10px;
}
.classroom-checkbox-grid .form-label{
    grid-column:1 / -1;
}
.check-card{
    display:flex;
    align-items:center;
    gap:10px;
    padding:12px 14px;
    border:1px solid rgba(148,163,184,.35);
    border-radius:16px;
    background:rgba(255,255,255,.68);
    font-weight:700;
    color:var(--text, #14213d);
}
.check-card input{
    width:18px;
    height:18px;
    margin:0;
}
.check-card:has(input:disabled){
    opacity:.55;
    background:rgba(148,163,184,.12);
}

/* Profile закладу + відновлення пароля */
.institution-mini-logo {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    object-fit: cover;
    border: 1px solid var(--line);
    background: var(--nested-bg);
    display: block;
}
.table-title-link {
    color: var(--text-link);
    font-weight: 900;
}
.table-title-link:hover {
    text-decoration: underline;
}
.institution-profile-hero {
    display: grid;
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 28px;
    align-items: center;
    overflow: hidden;
    margin-bottom: 24px;
}
.institution-profile-logo-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    border-radius: 32px;
    background: var(--nested-bg);
    border: 1px solid var(--line);
}
.institution-profile-logo {
    width: 148px;
    height: 148px;
    border-radius: 30px;
    object-fit: cover;
    display: block;
    box-shadow: 0 18px 50px rgba(0,0,0,.12);
}
.institution-profile-main h1 {
    margin: 14px 0 10px;
    font-size: clamp(34px, 5vw, 58px);
    line-height: 1.05;
}
.institution-profile-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
}
.institution-profile-stats {
    margin: 24px 0;
}
.institution-profile-edit,
.institution-private-section,
.institution-members-card,
.institution-reviews {
    margin-top: 24px;
}
.switch-row {
    display: flex !important;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 18px;
    border: 1px solid var(--line);
    background: var(--nested-bg);
    min-height: 56px;
}
.switch-row input {
    width: 20px;
    height: 20px;
    margin: 0;
}
.compact-module-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
.institution-member-columns {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}
.institution-member-columns > div {
    border: 1px solid var(--line);
    background: var(--nested-bg);
    border-radius: 22px;
    padding: 18px;
}
.institution-member-columns h3 {
    margin: 0 0 14px;
}
.member-line {
    display: grid;
    gap: 4px;
    margin: 0;
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
}
.member-line:last-child {
    border-bottom: 0;
}
.member-line span {
    color: var(--muted);
    font-size: .92rem;
}
.institution-review-form {
    margin-bottom: 22px;
    padding: 18px;
    border: 1px solid var(--line);
    background: var(--nested-bg);
    border-radius: 24px;
}
.institution-review-list {
    display: grid;
    gap: 14px;
}
.review-item {
    position: relative;
    border: 1px solid var(--line);
    background: var(--nested-bg);
    border-radius: 22px;
    padding: 18px;
}
.review-item.is-hidden {
    opacity: .62;
}
.review-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 8px;
}
.review-head span {
    color: var(--orange);
    letter-spacing: .08em;
    white-space: nowrap;
}
.review-item p {
    color: var(--text);
    line-height: 1.6;
}
.review-item small {
    color: var(--muted);
}
.inline-review-action {
    margin-top: 12px;
}
.inline-review-action .btn {
    min-height: 40px;
    padding: 0 14px;
    border-radius: 12px;
}
@media (max-width: 860px) {
    .institution-profile-hero,
    .institution-member-columns {
        grid-template-columns: 1fr;
    }
    .institution-profile-logo-wrap {
        width: max-content;
    }
}

/* Public institution profile/list refinements */
.institution-public-info {
    margin-top: 24px;
}
.institution-info-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}
.institution-info-row {
    display: grid;
    gap: 7px;
    padding: 16px 18px;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--nested-bg);
}
.institution-info-row.full {
    grid-column: 1 / -1;
}
.institution-info-row span {
    color: var(--muted);
    font-size: .92rem;
    font-weight: 800;
}
.institution-info-row strong {
    color: var(--text);
    line-height: 1.6;
    word-break: break-word;
}
.public-institutions-home,
.public-institutions-page {
    margin-top: 24px;
}
.public-institution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin-top: 20px;
}
.public-institution-grid.compact-public-grid {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}
.public-institution-card {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 16px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 26px;
    background: var(--nested-bg);
    box-shadow: 0 16px 38px rgba(15, 23, 42, .06);
}
.public-institution-card.compact-card {
    grid-template-columns: 64px minmax(0, 1fr);
}
.public-institution-logo-wrap {
    display: flex;
    align-items: flex-start;
    justify-content: center;
}
.public-institution-card .institution-mini-logo {
    width: 56px;
    height: 56px;
    border-radius: 18px;
}
.public-institution-body h2,
.public-institution-body h3 {
    margin: 0 0 8px;
    line-height: 1.18;
}
.public-institution-body h2 a,
.public-institution-body h3 a {
    color: var(--text);
}
.public-institution-body p {
    margin: 0;
    color: var(--muted);
    line-height: 1.55;
}
.public-institution-actions {
    margin-top: 16px;
}
.compact-meta {
    margin-top: 14px;
}
@media (max-width: 720px) {
    .institution-info-grid,
    .public-institution-card,
    .public-institution-card.compact-card {
        grid-template-columns: 1fr;
    }
    .public-institution-logo-wrap {
        justify-content: flex-start;
    }
}

/* Stage 4.11 — акуратні відступи між блоками профілю закладу */
.institution-profile-page {
    display: flex;
    flex-direction: column;
    gap: 32px;
}
.institution-profile-page > section,
.institution-profile-page > .admin-stats {
    margin-top: 0 !important;
    margin-bottom: 0 !important;
}
.institution-profile-page .institution-members-card,
.institution-profile-page .institution-reviews,
.institution-profile-page .institution-private-section,
.institution-profile-page .institution-public-info,
.institution-profile-page .institution-profile-edit {
    scroll-margin-top: 110px;
}
.institution-profile-page .institution-reviews {
    padding-top: 34px;
}
.institution-profile-page .institution-review-form {
    margin-top: 18px;
}
@media (max-width: 720px) {
    .institution-profile-page {
        gap: 22px;
    }
}

/* Stage 5.2 — tests inside lesson page */
.lesson-tests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 16px;
}
.lesson-test-card {
    border: 1px solid rgba(148, 163, 184, 0.22);
    border-radius: 22px;
    padding: 18px;
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 16px 42px rgba(15, 23, 42, 0.08);
    display: flex;
    flex-direction: column;
    gap: 16px;
}
[data-theme="dark"] .lesson-test-card,
body.dark .lesson-test-card {
    background: rgba(15, 23, 42, 0.62);
    border-color: rgba(148, 163, 184, 0.18);
}
.lesson-test-card h3 {
    margin: 10px 0 8px;
    font-size: 20px;
    line-height: 1.25;
}
.lesson-test-card p {
    color: var(--muted);
    line-height: 1.55;
}
.lesson-test-meta {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-top: 12px;
}
.lesson-test-meta span {
    border-radius: 14px;
    padding: 9px 10px;
    background: rgba(99, 102, 241, 0.08);
    color: var(--muted);
    font-size: 13px;
}
.lesson-test-meta b {
    color: var(--text);
}
.lesson-test-actions {
    margin-top: auto;
}
.lesson-test-actions .btn.small {
    min-height: 38px;
}
@media (max-width: 720px) {
    .lesson-test-meta {
        grid-template-columns: 1fr;
    }
}

/* Stage 2.1 — контрольований режим закладу для власника порталу */
.portal-owner-context,
.portal-context-selector {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.portal-owner-context {
    padding: 16px 18px;
    border: 1px solid rgba(124, 92, 255, 0.28);
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(124, 92, 255, 0.12), rgba(51, 186, 255, 0.08));
    box-shadow: 0 18px 46px rgba(31, 41, 55, 0.08);
}
.portal-owner-context > div:first-child {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex-wrap: wrap;
}
.portal-owner-context-label {
    display: inline-flex;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(124, 92, 255, 0.14);
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .04em;
}
.portal-owner-context-actions,
.portal-context-form {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.portal-owner-context-actions form,
.portal-context-selector form {
    margin: 0;
}
.portal-context-selector {
    padding: 24px;
}
.portal-context-selector h2 {
    margin: 8px 0 6px;
}
.portal-context-form label {
    font-weight: 700;
}
.portal-context-form select {
    min-width: min(360px, 76vw);
    min-height: 44px;
    padding: 10px 14px;
    border-radius: 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
}
.module-owner-note {
    margin-top: 10px;
    font-size: 13px;
}
@media (max-width: 760px) {
    .portal-owner-context,
    .portal-context-selector {
        align-items: stretch;
    }
    .portal-owner-context-actions,
    .portal-context-form {
        width: 100%;
        align-items: stretch;
        flex-direction: column;
    }
    .portal-owner-context-actions .btn,
    .portal-owner-context-actions form,
    .portal-owner-context-actions button,
    .portal-context-form select,
    .portal-context-form .btn {
        width: 100%;
    }
}

/* Stage 3: global portal administration */
.btn.danger { color: #fff; background: linear-gradient(135deg, #e5484d, #ff6b6b); box-shadow: 0 12px 30px rgba(229,72,77,.24); }
.btn-small { min-height: 38px; padding: 0 14px; border-radius: 12px; font-size: 13px; }
button:disabled, .btn:disabled { opacity: .45; cursor: not-allowed; transform: none !important; }
.status-pending, .status-planned, .status-development { background: rgba(255,183,77,.16); }
.status-blocked, .status-rejected, .status-hidden, .status-dismissed { background: rgba(255,107,107,.14); }
.status-archived, .status-cancelled, .status-closed { background: rgba(148,163,184,.16); }
.status-approved, .status-published, .status-resolved, .status-active { background: rgba(102,230,167,.14); }
.status-beta, .status-open { background: rgba(17,211,255,.14); }

.admin-nav {
    display: flex; gap: 10px; align-items: center; overflow-x: auto; padding: 10px;
    margin-bottom: 24px; border: 1px solid var(--line); border-radius: 22px;
    background: color-mix(in srgb, var(--card) 88%, transparent); box-shadow: 0 14px 40px rgba(0,0,0,.08);
    scrollbar-width: thin;
}
.admin-nav-link { min-width: max-content; display: inline-flex; align-items: center; gap: 8px; padding: 12px 15px; border-radius: 15px; color: var(--muted); }
.admin-nav-link:hover { color: var(--text); background: var(--nested-bg); }
.admin-nav-link.is-active { color: #fff; background: linear-gradient(135deg, var(--primary), var(--pink)); box-shadow: 0 10px 28px rgba(124,92,255,.26); }
.admin-nav-link span { font-size: 17px; }

.admin-hero, .admin-page-head {
    display: flex; justify-content: space-between; gap: 24px; align-items: flex-end; margin-bottom: 24px;
    padding: 28px; border-radius: 28px; border: 1px solid var(--line);
    background: radial-gradient(circle at top right, rgba(17,211,255,.12), transparent 35%), radial-gradient(circle at bottom left, rgba(124,92,255,.18), transparent 42%), var(--card);
    box-shadow: var(--shadow);
}
.admin-hero h1, .admin-page-head h1 { margin: 10px 0 8px; font-size: clamp(30px, 4vw, 46px); }
.admin-hero p, .admin-page-head p { margin: 0; color: var(--muted); line-height: 1.6; max-width: 780px; }
.admin-hero-actions, .admin-page-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 12px; }
.admin-hero-actions form, .admin-page-actions form, .admin-row-actions form, .admin-panel-head form { margin: 0; }

.admin-kpi-grid { display: grid; grid-template-columns: repeat(6, minmax(0,1fr)); gap: 14px; margin-bottom: 24px; }
.admin-kpi-grid-small { grid-template-columns: repeat(4, minmax(0,1fr)); }
.admin-kpi {
    display: flex; min-height: 126px; flex-direction: column; justify-content: flex-end; gap: 7px;
    padding: 20px; border-radius: 22px; border: 1px solid var(--line); background: var(--card); box-shadow: 0 12px 34px rgba(0,0,0,.08);
}
a.admin-kpi:hover { transform: translateY(-3px); border-color: rgba(124,92,255,.35); }
.admin-kpi > span { font-size: 25px; margin-bottom: auto; }
.admin-kpi strong { font-size: 25px; overflow-wrap: anywhere; }
.admin-kpi small { color: var(--muted); line-height: 1.35; }

.admin-two-column { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 24px; }
.admin-section-gap { margin-top: 24px; }
.admin-panel { min-width: 0; }
.admin-panel h2 { margin: 4px 0 0; }
.admin-panel-head { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; margin-bottom: 18px; }
.admin-panel-head h2, .admin-panel-head h3 { margin: 8px 0 0; }
.admin-panel-head .text-link { margin: 0; white-space: nowrap; }

.admin-list { display: grid; gap: 10px; }
.admin-list-row { display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: 13px; padding: 14px; border-radius: 17px; background: var(--nested-bg); border: 1px solid var(--line); }
a.admin-list-row:hover { border-color: rgba(124,92,255,.34); transform: translateY(-1px); }
.admin-list-row strong, .admin-list-row small { display: block; }
.admin-list-row small { margin-top: 5px; color: var(--muted); line-height: 1.4; }
.admin-list-icon { width: 38px; height: 38px; display: inline-flex; align-items: center; justify-content: center; border-radius: 13px; background: var(--badge-bg); }
.admin-empty { padding: 24px; text-align: center; color: var(--muted); border: 1px dashed var(--line); border-radius: 18px; }

.admin-health-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-bottom: 18px; }
.admin-health-grid > div { padding: 15px; border-radius: 17px; background: var(--nested-bg); border: 1px solid var(--line); }
.admin-health-grid span, .admin-health-grid strong, .admin-health-grid small { display: block; }
.admin-health-grid span, .admin-health-grid small { color: var(--muted); font-size: 13px; }
.admin-health-grid strong { margin: 6px 0; overflow-wrap: anywhere; }
.admin-status-line { display: flex; align-items: center; gap: 10px; margin-top: 10px; color: var(--muted); }
.status-dot { flex: 0 0 auto; width: 10px; height: 10px; border-radius: 50%; background: #94a3b8; box-shadow: 0 0 0 5px rgba(148,163,184,.1); }
.status-dot.is-ok { background: var(--green); box-shadow: 0 0 0 5px rgba(102,230,167,.12); }
.status-dot.is-bad { background: var(--danger); box-shadow: 0 0 0 5px rgba(255,107,107,.12); }
.admin-check-list { display: grid; gap: 10px; }
.admin-check-list > div { display: grid; grid-template-columns: auto minmax(0,1fr) auto; align-items: center; gap: 12px; padding: 13px; border-radius: 15px; background: var(--nested-bg); }
.admin-check-list > div > span:last-child { color: var(--muted); }

.admin-table td > strong, .admin-table td > small { display: block; }
.admin-table td > small { color: var(--muted); margin-top: 5px; line-height: 1.35; }
.admin-table-wide { min-width: 1050px; }
.admin-row-actions { display: flex; flex-wrap: wrap; gap: 7px; align-items: center; }
.admin-inline-form { display: inline-flex; align-items: center; gap: 8px; min-width: 210px; }
.admin-inline-form select { min-height: 40px; }
.admin-user-agent { display: block; max-width: 290px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }

.admin-timeline { display: grid; gap: 4px; }
.admin-timeline-row { display: grid; grid-template-columns: 18px 1fr; gap: 12px; padding: 12px 0; }
.admin-timeline-row:not(:last-child) { border-bottom: 1px solid var(--line); }
.admin-timeline-dot { width: 10px; height: 10px; margin-top: 5px; border-radius: 50%; background: linear-gradient(135deg,var(--primary),var(--secondary)); box-shadow: 0 0 0 5px rgba(124,92,255,.1); }
.admin-timeline-row strong, .admin-timeline-row small { display: block; }
.admin-timeline-row small { color: var(--muted); margin-top: 5px; line-height: 1.4; }

.admin-filter-bar { display: flex; align-items: flex-end; flex-wrap: wrap; gap: 14px; margin-bottom: 24px; }
.admin-filter-bar label { min-width: 165px; flex: 0 1 220px; }
.admin-filter-bar label span { font-size: 13px; }
.admin-filter-grow { flex: 1 1 300px !important; }
.admin-filter-bar input, .admin-filter-bar select { min-height: 48px; }

.admin-pagination { display: flex; justify-content: center; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.admin-pagination a { min-width: 42px; min-height: 42px; display: inline-flex; align-items: center; justify-content: center; border-radius: 12px; background: var(--card); border: 1px solid var(--line); }
.admin-pagination a.is-current { color: #fff; background: linear-gradient(135deg,var(--primary),var(--pink)); }

.admin-card-stack { display: grid; gap: 18px; }
.admin-card-stack.compact { gap: 12px; }
.admin-request-card { display: grid; grid-template-columns: minmax(0,1fr) minmax(320px,.55fr); gap: 22px; }
.admin-request-card.is-highlighted { outline: 3px solid rgba(124,92,255,.35); }
.admin-request-main { display: grid; grid-template-columns: auto minmax(0,1fr); gap: 16px; }
.admin-request-icon { width: 52px; height: 52px; display: inline-flex; align-items: center; justify-content: center; border-radius: 17px; background: var(--badge-bg); font-size: 25px; }
.admin-request-title { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.admin-request-title h2 { margin: 0; }
.admin-request-actions { display: flex; flex-direction: column; align-items: stretch; gap: 10px; }
.admin-inline-review { display: flex; gap: 8px; align-items: center; }
.admin-inline-review input { min-height: 42px; }
.admin-note { padding: 13px 15px; margin-top: 12px; border-radius: 15px; background: var(--nested-bg); border-left: 4px solid var(--primary); color: var(--muted); line-height: 1.55; }

.admin-meta-list { display: grid; gap: 0; margin-top: 18px; }
.admin-meta-list > div { display: flex; justify-content: space-between; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.admin-meta-list > div span { color: var(--muted); }
.admin-meta-list > div strong { text-align: right; overflow-wrap: anywhere; }
.admin-check { display: flex !important; align-items: center; gap: 10px; }
.admin-check input { width: 20px; height: 20px; min-height: 20px; }
.admin-check span { margin: 0; }
.admin-separator { margin: 24px 0; border: 0; border-top: 1px solid var(--line); }

.admin-membership-card { display: grid; grid-template-columns: minmax(180px,1.2fr) repeat(3,minmax(130px,.8fr)) auto auto; gap: 12px; align-items: end; padding: 16px; border: 1px solid var(--line); border-radius: 18px; background: var(--nested-bg); }
.admin-membership-card > div strong, .admin-membership-card > div small { display: block; }
.admin-membership-card > div small { margin-top: 5px; color: var(--muted); }
.admin-membership-card input, .admin-membership-card select { min-height: 44px; }

.admin-module-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.admin-module-card { display: flex; flex-direction: column; }
.admin-module-card h2 { margin: 14px 0 8px; }
.admin-module-card p { color: var(--muted); line-height: 1.55; min-height: 50px; }
.admin-module-card-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.admin-module-icon { font-size: 36px; }
.admin-module-stats { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; margin: 8px 0 18px; }
.admin-module-stats span { display: block; padding: 11px; border-radius: 14px; background: var(--nested-bg); color: var(--muted); font-size: 12px; }
.admin-module-stats strong { display: block; color: var(--text); font-size: 16px; margin-bottom: 4px; }
.admin-module-card .form-grid.compact { margin-top: auto; grid-template-columns: repeat(2,minmax(0,1fr)); }
.admin-module-strip { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; }
.admin-module-strip > div { display: grid; grid-template-columns: auto 1fr; gap: 7px 10px; padding: 14px; border-radius: 16px; background: var(--nested-bg); border: 1px solid var(--line); }
.admin-module-strip > div > span { grid-row: 1/3; font-size: 27px; }
.admin-module-strip small { color: var(--muted); }

.admin-tabs { display: flex; gap: 10px; margin-bottom: 20px; }
.admin-tabs a { padding: 12px 18px; border-radius: 14px; background: var(--card); border: 1px solid var(--line); color: var(--muted); font-weight: 700; }
.admin-tabs a.is-active { color: #fff; background: linear-gradient(135deg,var(--primary),var(--pink)); }
.admin-moderation-card blockquote { margin: 18px 0; padding: 18px; border-radius: 18px; background: var(--nested-bg); border-left: 4px solid var(--secondary); line-height: 1.65; }
.admin-moderation-head { display: flex; justify-content: space-between; gap: 18px; }
.admin-moderation-head h2 { margin: 10px 0 5px; }
.admin-moderation-head p { margin: 0; color: var(--muted); }
.rating-stars { color: var(--orange); letter-spacing: 2px; }

.admin-storage-bar { height: 18px; overflow: hidden; border-radius: 999px; background: var(--nested-bg); border: 1px solid var(--line); }
.admin-storage-bar span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg,var(--green),var(--secondary),var(--primary)); }
.admin-toggle-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.admin-toggle { display: flex; align-items: flex-start; gap: 13px; padding: 17px; border: 1px solid var(--line); border-radius: 18px; background: var(--nested-bg); cursor: pointer; }
.admin-toggle input { width: 22px; height: 22px; min-height: 22px; margin-top: 1px; }
.admin-toggle span, .admin-toggle strong, .admin-toggle small { display: block; }
.admin-toggle span { margin: 0; }
.admin-toggle small { margin-top: 6px; color: var(--muted); line-height: 1.45; }
.admin-toggle-danger { margin-bottom: 18px; border-color: rgba(255,107,107,.25); }
.admin-sticky-save { position: sticky; bottom: 18px; z-index: 20; display: flex; justify-content: flex-end; margin-top: 20px; padding: 14px; border-radius: 18px; border: 1px solid var(--line); background: color-mix(in srgb,var(--card) 94%,transparent); backdrop-filter: blur(18px); box-shadow: 0 16px 40px rgba(0,0,0,.18); }

@media (max-width: 1120px) {
    .admin-kpi-grid { grid-template-columns: repeat(3,minmax(0,1fr)); }
    .admin-module-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .admin-membership-card { grid-template-columns: repeat(2,minmax(0,1fr)); }
    .admin-membership-card > div { grid-column: 1/-1; }
}
@media (max-width: 820px) {
    .admin-hero, .admin-page-head { align-items: stretch; flex-direction: column; }
    .admin-hero-actions, .admin-page-actions { justify-content: flex-start; }
    .admin-two-column, .admin-module-strip, .admin-toggle-grid { grid-template-columns: 1fr; }
    .admin-request-card { grid-template-columns: 1fr; }
    .admin-inline-review { flex-direction: column; align-items: stretch; }
}
@media (max-width: 620px) {
    .admin-kpi-grid, .admin-kpi-grid-small, .admin-module-grid { grid-template-columns: 1fr; }
    .admin-kpi { min-height: 105px; }
    .admin-nav { margin-left: -8px; margin-right: -8px; }
    .admin-request-main { grid-template-columns: 1fr; }
    .admin-request-title, .admin-moderation-head { align-items: flex-start; flex-direction: column; }
    .admin-membership-card { grid-template-columns: 1fr; }
    .admin-membership-card > div { grid-column: auto; }
    .admin-health-grid { grid-template-columns: 1fr; }
}

/* Admin pages are emitted after the shared header in the legacy layout. Keep them centered without changing old modules. */
body > .admin-nav,
body > .admin-hero,
body > .admin-page-head,
body > .admin-kpi-grid,
body > .admin-two-column,
body > form.admin-filter-bar,
body > section.admin-panel,
body > section.admin-card-stack,
body > section.admin-module-grid,
body > nav.admin-tabs,
body > nav.admin-pagination,
body > form.admin-settings-form {
    width: min(1540px, calc(100% - 32px));
    margin-left: auto;
    margin-right: auto;
}
body > .admin-nav { margin-top: 28px; }

/* Stage 4: institution administration */
.institution-admin-hero {
    background:
        radial-gradient(circle at 88% 12%, rgba(102,230,167,.16), transparent 34%),
        radial-gradient(circle at 8% 92%, rgba(17,211,255,.12), transparent 38%),
        var(--card);
}
.institution-admin-nav .admin-nav-link.is-active {
    background: linear-gradient(135deg, var(--secondary), var(--primary));
}
.form-grid.compact { gap: 12px; }
.admin-panel textarea { width: 100%; resize: vertical; }
.admin-panel .helper-text { line-height: 1.55; }
@media (max-width: 760px) {
    .institution-admin-nav { padding-bottom: 12px; }
    .admin-inline-form { min-width: 0; width: 100%; flex-direction: column; align-items: stretch; }
}