/* ==========================================================================
   Adesua UI — one stylesheet for website, student app, school and admin.
   Brand colours/fonts are CSS variables injected from Admin → Settings,
   so rebranding never needs a rebuild.
   ========================================================================== */

:root {
  --primary: #0B6E4F;
  --primary-rgb: 11 110 79;
  --primary-dark: #07523A;
  --accent: #F2B705;
  --accent-rgb: 242 183 5;
  --ink: #14201B;
  --ink-rgb: 20 32 27;
  --surface: #F7F5EF;
  --card: #FFFFFF;
  --muted: #5D6B65;
  --line: #E5E1D6;
  --line-strong: #D3CEC0;
  --danger: #C0352B;
  --danger-bg: #FCECEA;
  --success: #12804F;
  --success-bg: #E5F5EC;
  --warning-bg: #FFF5D6;
  --info-bg: #E8F1FB;
  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgb(var(--ink-rgb) / .06), 0 4px 16px rgb(var(--ink-rgb) / .05);
  --shadow-lg: 0 12px 40px rgb(var(--ink-rgb) / .12);
  --font-heading: "Bricolage Grotesque", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--font-body); font-size: 15px; line-height: 1.55;
  color: var(--ink); background: var(--surface); -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; vertical-align: middle; }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font-heading); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.02em; font-weight: 700; }
h1 { font-size: clamp(2rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.2rem); }
h3 { font-size: 1.2rem; }
h4 { font-size: 1rem; }
p { margin: 0 0 1em; }
hr { border: 0; border-top: 1px solid var(--line); margin: 1.5rem 0; }
code { background: rgb(var(--ink-rgb) / .06); padding: .1em .35em; border-radius: 5px; font-size: .9em; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.tiny { font-size: .75rem; }
.center { text-align: center; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }
.mt-0 { margin-top: 0 } .mb-0 { margin-bottom: 0 } .mt-1 { margin-top: .5rem } .mt-2 { margin-top: 1rem } .mt-3 { margin-top: 1.5rem } .mt-4 { margin-top: 2.5rem }
.mb-1 { margin-bottom: .5rem } .mb-2 { margin-bottom: 1rem } .mb-3 { margin-bottom: 1.5rem }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* Layout helpers ---------------------------------------------------------- */
.container { width: min(1160px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(720px, 100% - 32px); margin-inline: auto; }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.row.between { justify-content: space-between; }
.row.end { justify-content: flex-end; }
.stack > * + * { margin-top: 1rem; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
@media (max-width: 900px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
.grow { flex: 1; min-width: 0; }

/* Buttons --------------------------------------------------------------- */
.btn {
  --b: var(--primary); --t: #fff;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 18px; border-radius: 999px; border: 1.5px solid var(--b); background: var(--b); color: var(--t);
  font: 600 .95rem/1.2 var(--font-body); cursor: pointer; text-decoration: none !important; white-space: nowrap;
  transition: transform .12s ease, background .15s ease, box-shadow .15s ease;
}
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); box-shadow: 0 6px 18px rgb(var(--primary-rgb) / .25); }
.btn:active { transform: translateY(1px); }
.btn svg { width: 18px; height: 18px; }
.btn-accent { --b: var(--accent); --t: var(--ink); }
.btn-accent:hover { background: var(--accent); filter: brightness(.95); border-color: var(--accent); box-shadow: 0 6px 18px rgb(var(--accent-rgb) / .35); }
.btn-ghost { background: transparent; color: var(--ink); border-color: transparent; }
.btn-ghost:hover { background: rgb(var(--ink-rgb) / .06); border-color: transparent; box-shadow: none; }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--line-strong); }
.btn-outline:hover { background: rgb(var(--primary-rgb) / .06); border-color: var(--primary); box-shadow: none; }
.btn-light { --b: #fff; --t: var(--primary); }
.btn-light:hover { background: #fff; border-color: #fff; }
.btn-danger { --b: var(--danger); }
.btn-danger:hover { background: #a02a21; border-color: #a02a21; box-shadow: none; }
.btn-sm { padding: 7px 13px; font-size: .85rem; }
.btn-lg { padding: 14px 24px; font-size: 1.02rem; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .55; pointer-events: none; }
.link-btn { background: none; border: 0; padding: 0; color: var(--primary); font: inherit; cursor: pointer; }
.link-btn.danger { color: var(--danger); }

/* Cards, badges, alerts -------------------------------------------------- */
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: var(--shadow); }
.card-flat { box-shadow: none; }
.card-pad-0 { padding: 0; overflow: hidden; }
.card h3 { margin-bottom: .35em; }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.card-head h3 { margin: 0; }
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 3px 10px; border-radius: 999px; font-size: .75rem; font-weight: 600; background: rgb(var(--ink-rgb) / .07); color: var(--ink); }
.badge-primary { background: rgb(var(--primary-rgb) / .12); color: var(--primary-dark); }
.badge-accent { background: rgb(var(--accent-rgb) / .22); color: #6b5100; }
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-muted { background: rgb(var(--ink-rgb) / .05); color: var(--muted); }
.alert { padding: 13px 16px; border-radius: var(--radius-sm); margin-bottom: 18px; border: 1px solid transparent; font-size: .93rem; }
.alert ul { margin: 0; padding-left: 18px; }
.alert-success { background: var(--success-bg); color: #0b5c38; border-color: #bfe5cf; }
.alert-danger { background: var(--danger-bg); color: #8f241c; border-color: #f2c7c2; }
.alert-warning { background: var(--warning-bg); color: #6b5100; border-color: #f2df9e; }
.alert-info { background: var(--info-bg); color: #1d4c80; border-color: #c8dcf2; }

/* Forms ---------------------------------------------------------------- */
.field { margin-bottom: 16px; }
.field > label, .label { display: block; font-weight: 600; font-size: .88rem; margin-bottom: 6px; }
.hint { font-size: .8rem; color: var(--muted); margin-top: 5px; }
.error { font-size: .82rem; color: var(--danger); margin-top: 5px; }
.input, select.input, textarea.input {
  width: 100%; padding: 11px 13px; border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm);
  background: #fff; font: inherit; color: var(--ink); transition: border-color .15s, box-shadow .15s;
}
.input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px rgb(var(--primary-rgb) / .12); }
textarea.input { min-height: 110px; resize: vertical; }
.input-color { display: flex; gap: 8px; align-items: center; }
.input-color input[type=color] { width: 46px; height: 42px; border: 1.5px solid var(--line-strong); border-radius: var(--radius-sm); padding: 3px; background: #fff; cursor: pointer; }
.check { display: inline-flex; align-items: center; gap: 8px; font-weight: 500; cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--primary); }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 18px; }
.form-grid .full { grid-column: 1 / -1; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; margin-bottom: 18px; background: #fff; }
.fieldset legend { font-weight: 700; padding: 0 6px; font-family: var(--font-heading); }

/* Tables --------------------------------------------------------------- */
.table-wrap { overflow-x: auto; }
table.table { width: 100%; border-collapse: collapse; font-size: .92rem; }
.table th { text-align: left; font-size: .75rem; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); font-weight: 600; padding: 12px 14px; border-bottom: 1px solid var(--line); background: #FBFAF6; white-space: nowrap; }
.table td { padding: 12px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table tr:hover td { background: #FCFBF8; }
.table .actions { text-align: right; white-space: nowrap; }
.table .actions > * { margin-left: 10px; }
.empty { text-align: center; padding: 40px 20px; color: var(--muted); }
.empty svg { width: 40px; height: 40px; opacity: .4; margin-bottom: 8px; }

/* Pagination (Laravel default markup) */
nav[role=navigation] { margin-top: 16px; }
nav[role=navigation] .hidden { display: none; }
.pagination { display: flex; gap: 6px; list-style: none; padding: 0; margin: 16px 0 0; flex-wrap: wrap; }
.pagination li a, .pagination li span { display: inline-block; min-width: 36px; padding: 7px 11px; border-radius: 8px; border: 1px solid var(--line); background: #fff; text-align: center; font-size: .88rem; color: var(--ink); }
.pagination li.active span { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination li.disabled span { opacity: .45; }

/* Progress & mastery ---------------------------------------------------- */
.bar { height: 8px; border-radius: 99px; background: rgb(var(--ink-rgb) / .08); overflow: hidden; }
.bar > span { display: block; height: 100%; border-radius: 99px; background: var(--primary); transition: width .4s ease; }
.bar.accent > span { background: var(--accent); }
.bar-stack { display: flex; height: 10px; border-radius: 99px; overflow: hidden; background: rgb(var(--ink-rgb) / .08); }
.bar-stack .m { background: var(--primary); }
.bar-stack .l { background: var(--accent); }
.ring { --p: 0; --size: 120px; width: var(--size); height: var(--size); border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--primary) calc(var(--p) * 1%), rgb(var(--ink-rgb) / .08) 0); flex-shrink: 0; }
.ring::before { content: ""; grid-area: 1 / 1; width: calc(var(--size) - 22px); height: calc(var(--size) - 22px); border-radius: 50%; background: var(--card); }
.ring > span { grid-area: 1 / 1; position: relative; font: 700 1.6rem var(--font-heading); }
.ring.sm { --size: 64px; } .ring.sm > span { font-size: 1rem; } .ring.sm::before { width: calc(var(--size) - 12px); height: calc(var(--size) - 12px); }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: .8rem; color: var(--muted); }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 5px; vertical-align: -1px; }
.stat { padding: 18px 20px; }
.stat .v { font: 700 1.75rem/1.1 var(--font-heading); letter-spacing: -.02em; }
.stat .l { color: var(--muted); font-size: .85rem; margin-top: 4px; }

/* Brand ---------------------------------------------------------------- */
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none !important; }
.brand .brand-name { font: 700 1.35rem/1 var(--font-heading); letter-spacing: -.03em; }
.brand img.brand-logo { height: 36px; width: auto; }
.icon { width: 20px; height: 20px; flex-shrink: 0; }
.icon-box { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; background: rgb(var(--primary-rgb) / .1); color: var(--primary); flex-shrink: 0; }
.icon-box .icon { width: 22px; height: 22px; }

/* ==========================================================================
   Public website
   ========================================================================== */
.site-nav { position: sticky; top: 0; z-index: 40; background: rgb(247 245 239 / .88); backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid transparent; }
.site-nav.scrolled { border-color: var(--line); }
.site-nav .container { display: flex; align-items: center; gap: 24px; height: 70px; }
.site-nav .links { display: flex; gap: 4px; margin-left: auto; align-items: center; }
.site-nav .links a:not(.btn) { color: var(--ink); padding: 8px 12px; border-radius: 99px; font-weight: 500; font-size: .95rem; }
.site-nav .links a:not(.btn):hover { background: rgb(var(--ink-rgb) / .05); text-decoration: none; }
.nav-toggle { display: none; margin-left: auto; background: none; border: 0; padding: 8px; cursor: pointer; color: var(--ink); }
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav .links { display: none; position: absolute; top: 70px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--surface); padding: 12px 16px 20px; border-bottom: 1px solid var(--line); box-shadow: var(--shadow-lg); }
  .site-nav.open .links { display: flex; }
  .site-nav .links .btn { margin-top: 6px; }
}

.hero { padding: clamp(40px, 7vw, 90px) 0 clamp(40px, 6vw, 70px); position: relative; overflow: hidden; }
.hero .container { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
@media (max-width: 900px) { .hero .container { grid-template-columns: 1fr; } }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 600; color: var(--primary-dark); background: rgb(var(--primary-rgb) / .1); padding: 6px 13px; border-radius: 99px; margin-bottom: 18px; }
.eyebrow::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.hero h1 { margin-bottom: 18px; }
.hero h1 em { font-style: normal; color: var(--primary); position: relative; white-space: nowrap; }
.hero h1 em::after { content: ""; position: absolute; left: 0; right: 0; bottom: .05em; height: .28em; background: rgb(var(--accent-rgb) / .55); z-index: -1; border-radius: 4px; }
.hero .lead { font-size: 1.12rem; color: var(--muted); max-width: 560px; margin-bottom: 26px; }
.hero-art { position: relative; }
.hero-art img { border-radius: 22px; box-shadow: var(--shadow-lg); }

/* Demo question card in the hero */
.demo-q { background: #fff; border-radius: 22px; padding: 24px; box-shadow: var(--shadow-lg); border: 1px solid var(--line); position: relative; }
.demo-q .meta { display: flex; justify-content: space-between; font-size: .78rem; color: var(--muted); margin-bottom: 12px; }
.demo-q .qtext { font-weight: 600; margin-bottom: 14px; }
.demo-q .opt { display: flex; gap: 12px; align-items: center; padding: 11px 13px; border: 1.5px solid var(--line); border-radius: 12px; margin-bottom: 8px; font-size: .93rem; }
.demo-q .opt b { width: 26px; height: 26px; border-radius: 8px; display: grid; place-items: center; background: rgb(var(--ink-rgb) / .06); font-size: .8rem; }
.demo-q .opt.ok { border-color: var(--success); background: var(--success-bg); }
.demo-q .opt.ok b { background: var(--success); color: #fff; }
.demo-q .tracker { display: flex; align-items: center; gap: 10px; margin-top: 14px; padding-top: 14px; border-top: 1px dashed var(--line-strong); font-size: .85rem; }
.dots { display: inline-flex; gap: 5px; }
.dots i { width: 22px; height: 8px; border-radius: 99px; background: rgb(var(--ink-rgb) / .1); }
.dots i.on { background: var(--primary); }
.float-badge { position: absolute; background: #fff; border-radius: 14px; padding: 10px 14px; box-shadow: var(--shadow-lg); font-size: .82rem; font-weight: 600; display: flex; align-items: center; gap: 8px; border: 1px solid var(--line); }
.float-badge.one { top: -18px; right: -10px; }
.float-badge.two { bottom: -20px; left: -16px; }
@media (max-width: 900px) { .float-badge.one { right: 8px; } .float-badge.two { left: 8px; } }

.stats-strip { border-block: 1px solid var(--line); background: #fff; }
.stats-strip .container { display: grid; grid-template-columns: repeat(3, 1fr); }
.stats-strip .s { padding: 24px 12px; text-align: center; }
.stats-strip .s + .s { border-left: 1px solid var(--line); }
.stats-strip .v { font: 800 1.8rem var(--font-heading); color: var(--primary); }
.stats-strip .l { font-size: .85rem; color: var(--muted); }
@media (max-width: 640px) { .stats-strip .container { grid-template-columns: 1fr; } .stats-strip .s + .s { border-left: 0; border-top: 1px solid var(--line); } }

.section { padding: clamp(50px, 8vw, 96px) 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head.center { margin-inline: auto; }
.section-head p { color: var(--muted); font-size: 1.05rem; }
.section.alt { background: #fff; border-block: 1px solid var(--line); }
.section.dark { background: var(--ink); color: #fff; }
.section.dark .muted, .section.dark .section-head p { color: rgb(255 255 255 / .7); }

.feature { padding: 26px; }
.feature .icon-box { margin-bottom: 16px; }
.feature p { color: var(--muted); margin: 0; font-size: .95rem; }

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 800px) { .steps { grid-template-columns: 1fr; } }
.step { position: relative; padding: 26px; border-radius: var(--radius); background: rgb(255 255 255 / .06); border: 1px solid rgb(255 255 255 / .12); }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%; background: var(--accent); color: var(--ink); font: 800 1rem var(--font-heading); margin-bottom: 16px; }
.step p { color: rgb(255 255 255 / .72); margin: 0; }

.plan { display: flex; flex-direction: column; padding: 28px; position: relative; }
.plan.featured { border: 2px solid var(--primary); box-shadow: 0 16px 40px rgb(var(--primary-rgb) / .16); }
.plan .ribbon { position: absolute; top: -12px; left: 24px; }
.plan .price { font: 800 2.4rem/1 var(--font-heading); letter-spacing: -.03em; margin: 12px 0 4px; }
.plan .price small { font: 500 .95rem var(--font-body); color: var(--muted); letter-spacing: 0; }
.plan ul { list-style: none; padding: 0; margin: 18px 0 24px; flex: 1; }
.plan li { display: flex; gap: 10px; padding: 6px 0; font-size: .94rem; }
.plan li svg { color: var(--primary); width: 18px; flex-shrink: 0; margin-top: 2px; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }
.check-list { list-style: none; padding: 0; margin: 0 0 24px; }
.check-list li { display: flex; gap: 10px; padding: 7px 0; }
.check-list svg { color: var(--primary); flex-shrink: 0; margin-top: 2px; }

.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.02rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--primary); transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 12px 0 0; color: var(--muted); }

.testimonial { padding: 26px; }
.testimonial blockquote { margin: 0 0 18px; font-size: 1.02rem; }
.testimonial .who { display: flex; gap: 12px; align-items: center; }
.avatar { width: 40px; height: 40px; border-radius: 50%; background: rgb(var(--primary-rgb) / .14); color: var(--primary-dark); display: grid; place-items: center; font-weight: 700; font-size: .85rem; overflow: hidden; flex-shrink: 0; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }

.cta-band { background: var(--primary); color: #fff; border-radius: 26px; padding: clamp(32px, 6vw, 60px); display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; position: relative; overflow: hidden; }
.cta-band::after { content: ""; position: absolute; right: -60px; top: -60px; width: 220px; height: 220px; border-radius: 50%; background: var(--accent); opacity: .9; }
.cta-band > * { position: relative; z-index: 1; }
.cta-band h2 { margin: 0 0 6px; }
.cta-band p { margin: 0; opacity: .85; }

.prose { font-size: 1.02rem; }
.prose h2 { margin-top: 1.6em; } .prose h3 { margin-top: 1.4em; }
.prose img { border-radius: 12px; }
.prose ul, .prose ol { padding-left: 1.3em; }

.site-footer { background: var(--ink); color: rgb(255 255 255 / .75); padding: 56px 0 28px; margin-top: 0; }
.site-footer a { color: rgb(255 255 255 / .75); }
.site-footer a:hover { color: #fff; }
.site-footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 32px; }
@media (max-width: 800px) { .site-footer .cols { grid-template-columns: 1fr 1fr; } }
.site-footer h4 { color: #fff; font-size: .95rem; margin-bottom: 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer li { padding: 4px 0; font-size: .92rem; }
.site-footer .brand { color: #fff; }
.site-footer .bottom { border-top: 1px solid rgb(255 255 255 / .12); margin-top: 40px; padding-top: 22px; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; font-size: .85rem; }

/* Auth pages */
.auth-wrap { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; }
.auth-side { background: var(--primary); color: #fff; padding: 48px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.auth-side::after { content: ""; position: absolute; width: 340px; height: 340px; border-radius: 50%; background: var(--accent); right: -120px; bottom: -120px; opacity: .95; }
.auth-side .brand { color: #fff; }
.auth-side blockquote { font: 600 1.6rem/1.3 var(--font-heading); margin: 0; max-width: 420px; position: relative; z-index: 1; letter-spacing: -.02em; }
.auth-main { display: grid; place-items: center; padding: 40px 20px; }
.auth-card { width: min(420px, 100%); }
.auth-card h1 { font-size: 1.9rem; }
@media (max-width: 860px) { .auth-wrap { grid-template-columns: 1fr; } .auth-side { display: none; } }
.tabs-inline { display: flex; background: rgb(var(--ink-rgb) / .06); border-radius: 99px; padding: 4px; margin-bottom: 18px; }
.tabs-inline label { flex: 1; text-align: center; padding: 9px; border-radius: 99px; cursor: pointer; font-weight: 600; font-size: .9rem; color: var(--muted); }
.tabs-inline input { display: none; }
.tabs-inline input:checked + label { background: #fff; color: var(--ink); box-shadow: var(--shadow); }

/* ==========================================================================
   Panels: student app, school dashboard and admin share this shell
   ========================================================================== */
.shell { display: grid; grid-template-columns: 252px 1fr; min-height: 100vh; }
.sidebar { background: #fff; border-right: 1px solid var(--line); padding: 18px 14px; position: sticky; top: 0; height: 100vh; overflow-y: auto; display: flex; flex-direction: column; }
.sidebar .brand { padding: 6px 10px 20px; }
.side-group { font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); font-weight: 700; padding: 16px 12px 6px; }
.side-link { display: flex; align-items: center; gap: 11px; padding: 9px 12px; border-radius: 10px; color: var(--ink); font-weight: 500; font-size: .93rem; margin-bottom: 1px; }
.side-link .icon { width: 19px; height: 19px; color: var(--muted); }
.side-link:hover { background: rgb(var(--ink-rgb) / .045); text-decoration: none; }
.side-link.active { background: rgb(var(--primary-rgb) / .1); color: var(--primary-dark); font-weight: 600; }
.side-link.active .icon { color: var(--primary); }
.side-link .count { margin-left: auto; font-size: .72rem; background: var(--accent); color: var(--ink); border-radius: 99px; padding: 1px 8px; font-weight: 700; }
.side-foot { margin-top: auto; padding-top: 16px; border-top: 1px solid var(--line); }
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar { height: 64px; display: flex; align-items: center; gap: 14px; padding: 0 28px; border-bottom: 1px solid var(--line); background: rgb(247 245 239 / .9); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 30; }
.topbar .title { font: 700 1.1rem var(--font-heading); }
.topbar .right-side { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.content { padding: 28px; flex: 1; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.page-head h1 { font-size: 1.75rem; margin: 0; }
.page-head p { margin: 4px 0 0; color: var(--muted); }
.menu-btn { display: none; background: none; border: 0; padding: 6px; cursor: pointer; color: var(--ink); }
.user-chip { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 12px; }
.user-chip .avatar { width: 34px; height: 34px; }
.user-chip .n { font-weight: 600; font-size: .88rem; line-height: 1.2; }
.user-chip .r { font-size: .75rem; color: var(--muted); }
.backdrop { display: none; }
@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; top: 0; z-index: 60; width: 270px; transform: translateX(-100%); transition: transform .22s ease; box-shadow: var(--shadow-lg); }
  .shell.nav-open .sidebar { transform: none; }
  .shell.nav-open .backdrop { display: block; position: fixed; inset: 0; background: rgb(0 0 0 / .35); z-index: 50; }
  .menu-btn { display: block; }
  .topbar { padding: 0 16px; }
  .content { padding: 20px 16px 96px; }
}

/* Student bottom tabs on phones */
.tabbar { display: none; }
@media (max-width: 960px) {
  .has-tabbar .tabbar { display: grid; grid-template-columns: repeat(4, 1fr); position: fixed; bottom: 0; left: 0; right: 0; background: #fff; border-top: 1px solid var(--line); z-index: 40; padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); }
  .tabbar a { display: flex; flex-direction: column; align-items: center; gap: 3px; font-size: .7rem; color: var(--muted); padding: 6px; font-weight: 600; text-decoration: none; }
  .tabbar a.active { color: var(--primary); }
  .tabbar .icon { width: 22px; height: 22px; }
}

/* Subject tiles */
.subject-tile { display: flex; flex-direction: column; gap: 14px; color: var(--ink); text-decoration: none !important; transition: transform .15s ease, box-shadow .15s ease; }
.subject-tile:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.subject-tile .top { display: flex; align-items: center; gap: 12px; }
.subject-tile .icon-box { background: color-mix(in srgb, var(--c, var(--primary)) 13%, transparent); color: var(--c, var(--primary)); }
.subject-tile h3 { margin: 0; font-size: 1.02rem; }

/* Practice ------------------------------------------------------------ */
.q-wrap { max-width: 760px; margin-inline: auto; }
.q-progress { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }
.q-progress .bar { flex: 1; }
.q-card { padding: clamp(20px, 4vw, 34px); }
.q-meta { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.q-body { font-size: 1.1rem; line-height: 1.6; margin-bottom: 22px; }
.q-body img, .q-img { max-height: 360px; border-radius: 10px; margin: 8px 0; }
.options { display: grid; gap: 10px; }
.option { display: flex; gap: 14px; align-items: center; padding: 14px 16px; border: 1.5px solid var(--line-strong); border-radius: 14px; cursor: pointer; background: #fff; transition: border-color .12s, background .12s; font-size: 1rem; }
.option:hover { border-color: var(--primary); }
.option input { display: none; }
.option .key { width: 32px; height: 32px; border-radius: 9px; display: grid; place-items: center; background: rgb(var(--ink-rgb) / .06); font-weight: 700; font-size: .88rem; flex-shrink: 0; }
.option:has(input:checked) { border-color: var(--primary); background: rgb(var(--primary-rgb) / .06); }
.option:has(input:checked) .key { background: var(--primary); color: #fff; }
.option.correct { border-color: var(--success); background: var(--success-bg); }
.option.correct .key { background: var(--success); color: #fff; }
.option.wrong { border-color: var(--danger); background: var(--danger-bg); }
.option.wrong .key { background: var(--danger); color: #fff; }
.option.locked { cursor: default; }
.option.locked:hover { border-color: inherit; }
.verdict { display: flex; gap: 14px; align-items: flex-start; padding: 18px; border-radius: 14px; margin-top: 20px; }
.verdict.ok { background: var(--success-bg); }
.verdict.no { background: var(--danger-bg); }
.verdict .icon { width: 26px; height: 26px; }
.verdict.ok .icon { color: var(--success); }
.verdict.no .icon { color: var(--danger); }
.explain { margin-top: 16px; padding: 18px; border-radius: 14px; background: rgb(var(--accent-rgb) / .14); border: 1px solid rgb(var(--accent-rgb) / .35); }
.explain h4 { margin-bottom: 6px; display: flex; gap: 8px; align-items: center; }
.mastery-note { display: flex; align-items: center; gap: 10px; margin-top: 14px; font-size: .9rem; color: var(--muted); }
.point { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 12px; margin-bottom: 8px; cursor: pointer; background: #fff; }
.point input { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--primary); }
.point:has(input:checked) { border-color: var(--primary); background: rgb(var(--primary-rgb) / .05); }
.point .marks { margin-left: auto; font-weight: 700; color: var(--primary); white-space: nowrap; }
.timer { font: 700 1.05rem var(--font-heading); font-variant-numeric: tabular-nums; padding: 6px 14px; border-radius: 99px; background: rgb(var(--ink-rgb) / .07); }
.timer.low { background: var(--danger-bg); color: var(--danger); }
.mock-nav { display: flex; flex-wrap: wrap; gap: 6px; }
.mock-nav a { width: 36px; height: 36px; border-radius: 9px; display: grid; place-items: center; border: 1.5px solid var(--line-strong); color: var(--ink); font-size: .82rem; font-weight: 600; text-decoration: none; background: #fff; }
.mock-nav a.done { background: var(--primary); color: #fff; border-color: var(--primary); }
.mock-q { scroll-margin-top: 90px; }
.answer-box { min-height: 180px; }

/* Admin specifics ----------------------------------------------------- */
.settings-nav { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 20px; }
.settings-nav a { padding: 8px 14px; border-radius: 99px; color: var(--ink); font-weight: 600; font-size: .88rem; background: #fff; border: 1px solid var(--line); }
.settings-nav a.active { background: var(--ink); color: #fff; border-color: var(--ink); }
.settings-nav a:hover { text-decoration: none; }
.preview-swatch { display: flex; gap: 10px; align-items: center; padding: 14px; border-radius: 12px; border: 1px dashed var(--line-strong); }
.img-preview { max-height: 64px; border-radius: 8px; border: 1px solid var(--line); padding: 4px; background: #fff; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 16px; }
.filters .input { width: auto; min-width: 150px; padding: 8px 12px; }
.opt-row { display: grid; grid-template-columns: 34px 1fr auto auto; gap: 10px; align-items: start; margin-bottom: 10px; }
.opt-row .key { width: 34px; height: 42px; display: grid; place-items: center; font-weight: 700; border-radius: 9px; background: rgb(var(--ink-rgb) / .06); }
.point-row { display: grid; grid-template-columns: 1fr 90px auto; gap: 10px; margin-bottom: 10px; }
.editor { background: #fff; border-radius: var(--radius-sm); }
.editor .ql-toolbar { border-radius: var(--radius-sm) var(--radius-sm) 0 0; border-color: var(--line-strong) !important; }
.editor .ql-container { border-radius: 0 0 var(--radius-sm) var(--radius-sm); border-color: var(--line-strong) !important; font: inherit; font-size: 1rem; min-height: 120px; }
.kpi-icon { width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; background: rgb(var(--primary-rgb) / .1); color: var(--primary); float: right; }
.code-block { background: var(--ink); color: #e6efe9; padding: 14px 16px; border-radius: 10px; font: .82rem/1.6 ui-monospace, SFMono-Regular, Menlo, monospace; overflow-x: auto; white-space: pre; }
.mini-chart { display: flex; align-items: flex-end; gap: 6px; height: 120px; padding-top: 10px; }
.mini-chart .col { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 6px; height: 100%; justify-content: flex-end; }
.mini-chart .col span { width: 100%; background: rgb(var(--primary-rgb) / .8); border-radius: 6px 6px 2px 2px; min-height: 3px; }
.mini-chart .col small { font-size: .68rem; color: var(--muted); }

/* KaTeX tweaks */
.katex { font-size: 1.05em; }

/* Two-column layouts set inline collapse to one column on tablets and phones */
@media (max-width: 900px) {
  .grid[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
  aside[style*="sticky"], .card[style*="sticky"] { position: static !important; }
}
@media (max-width: 640px) {
  .hide-sm { display: none; }
  .page-head h1 { font-size: 1.45rem; }
  .card { padding: 18px; }
}

/* Homepage additions (v0.0.4) */
.demo-explain { margin-top: 12px; padding: 12px 14px; border-radius: 12px; background: rgb(var(--accent-rgb) / .14); font-size: .86rem; line-height: 1.5; }
.feature-row { display: flex; gap: 16px; align-items: flex-start; padding: 6px 0; }
.feature-row h3 { font-size: 1.05rem; margin-bottom: 4px; }
.feature-row p { color: var(--muted); margin: 0; font-size: .95rem; }
.subject-list { list-style: none; padding: 0; margin: 0; columns: 2; column-gap: 20px; }
.subject-list li { display: flex; gap: 8px; align-items: center; padding: 6px 0; font-size: .95rem; break-inside: avoid; }
.subject-list .icon { width: 18px; height: 18px; }
@media (max-width: 520px) { .subject-list { columns: 1; } }