/* HeyTeacher design system — one sheet, light + dark, a calm grown-up skin and a playful student skin. */
@font-face { font-family: "Jakarta"; src: url("/fonts/plusjakartasans.woff2") format("woff2"); font-weight: 400 800; font-display: swap; }
@font-face { font-family: "Fredoka"; src: url("/fonts/fredoka.woff2") format("woff2"); font-weight: 400 700; font-display: swap; }

:root {
  --bg: #f6f5ff; --bg2: #ffffff; --ink: #191535; --ink2: #4a4668; --ink3: #8a86a8; --line: rgba(40, 30, 110, .10);
  --card: rgba(255, 255, 255, .78); --card-solid: #fff; --glass-blur: 18px;
  --brand: #5b4cf5; --brand2: #8b5cf6; --pink: #ff6fb5; --sun: #ffc94d; --mint: #22c9a0; --sky: #38bdf8; --coral: #ff7a59; --danger: #e5484d; --ok: #12a37f;
  --grad: linear-gradient(135deg, #5b4cf5 0%, #8b5cf6 45%, #ff6fb5 100%);
  --grad-soft: linear-gradient(135deg, rgba(91,76,245,.12), rgba(255,111,181,.12));
  --shadow: 0 1px 2px rgba(25,21,53,.04), 0 8px 24px rgba(60,40,180,.08);
  --shadow-lg: 0 2px 6px rgba(25,21,53,.05), 0 24px 60px rgba(60,40,180,.16);
  --r: 22px; --r-sm: 14px; --r-xs: 10px;
  --ease: cubic-bezier(.2, .8, .2, 1); --spring: cubic-bezier(.34, 1.56, .64, 1);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0c0a1d; --bg2: #141130; --ink: #f2f0ff; --ink2: #bdb8e0; --ink3: #8580ad; --line: rgba(200, 190, 255, .12);
    --card: rgba(26, 22, 58, .72); --card-solid: #18153a;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35); --shadow-lg: 0 30px 80px rgba(0,0,0,.5);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0c0a1d; --bg2: #141130; --ink: #f2f0ff; --ink2: #bdb8e0; --ink3: #8580ad; --line: rgba(200, 190, 255, .12);
  --card: rgba(26, 22, 58, .72); --card-solid: #18153a;
  --shadow: 0 1px 2px rgba(0,0,0,.3), 0 10px 30px rgba(0,0,0,.35); --shadow-lg: 0 30px 80px rgba(0,0,0,.5);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; min-height: 100vh; background: var(--bg); color: var(--ink); font: 400 15.5px/1.55 "Jakarta", system-ui, -apple-system, "Segoe UI", sans-serif; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
body::before { /* aurora mesh */
  content: ""; position: fixed; inset: -20vmax; z-index: -1; pointer-events: none;
  background:
    radial-gradient(40vmax 40vmax at 12% 8%, rgba(139, 92, 246, .20), transparent 60%),
    radial-gradient(36vmax 36vmax at 92% 12%, rgba(255, 111, 181, .16), transparent 60%),
    radial-gradient(40vmax 40vmax at 70% 95%, rgba(56, 189, 248, .14), transparent 60%),
    radial-gradient(30vmax 30vmax at 5% 90%, rgba(34, 201, 160, .12), transparent 60%);
  animation: drift 30s ease-in-out infinite alternate;
}
@keyframes drift { to { transform: translate3d(2vmax, -2vmax, 0) rotate(3deg); } }
@media (prefers-reduced-motion: reduce) { *, *::before { animation: none !important; transition: none !important; } }

a { color: var(--brand); text-decoration: none; } a:hover { text-decoration: underline; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .4em; letter-spacing: -.02em; }
h1 { font-size: clamp(28px, 4.2vw, 44px); font-weight: 800; }
h2 { font-size: clamp(20px, 2.4vw, 26px); font-weight: 750; }
h3 { font-size: 17px; font-weight: 700; }
p { margin: 0 0 .8em; }
.muted { color: var(--ink2); } .faint { color: var(--ink3); font-size: 13px; }
.grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.display { font-family: "Fredoka", "Jakarta", sans-serif; letter-spacing: -.01em; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 55%, transparent); outline-offset: 2px; border-radius: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- layout ---------- */
.wrap { width: min(1180px, 100% - 32px); margin: 0 auto; }
.grid { display: grid; gap: 18px; }
.g2 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); }
.g3 { grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; } .between { justify-content: space-between; } .end { justify-content: flex-end; }
.stack > * + * { margin-top: 14px; }
.sp { flex: 1; }

/* ---------- surfaces ---------- */
.card { background: var(--card); backdrop-filter: blur(var(--glass-blur)) saturate(1.4); -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(1.4); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; box-shadow: var(--shadow); }
.card.pad-lg { padding: 30px; }
.card.hover { transition: transform .35s var(--spring), box-shadow .3s var(--ease); cursor: pointer; }
.card.hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 999px; font-size: 12.5px; font-weight: 650; background: var(--grad-soft); color: var(--brand); border: 1px solid var(--line); white-space: nowrap; }
.chip.ok { background: rgba(18,163,127,.12); color: var(--ok); } .chip.warn { background: rgba(255,201,77,.18); color: #a46a00; } .chip.bad { background: rgba(229,72,77,.12); color: var(--danger); }
:root[data-theme="dark"] .chip.warn { color: var(--sun); }
.divider { height: 1px; background: var(--line); margin: 18px 0; border: 0; }

/* ---------- buttons ---------- */
.btn { --b: var(--grad); appearance: none; border: 0; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 700 15px/1 "Jakarta", sans-serif; padding: 13px 20px; border-radius: 999px; color: #fff; background: var(--b); box-shadow: 0 8px 22px rgba(91, 76, 245, .28);
  transition: transform .25s var(--spring), box-shadow .25s var(--ease), opacity .2s; text-decoration: none !important; white-space: nowrap; min-height: 46px; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(91, 76, 245, .35); }
.btn:active { transform: translateY(0) scale(.98); }
.btn[disabled] { opacity: .55; cursor: not-allowed; transform: none; }
.btn.ghost { background: transparent; color: var(--ink); box-shadow: none; border: 1.5px solid var(--line); }
.btn.ghost:hover { background: var(--grad-soft); }
.btn.soft { background: var(--grad-soft); color: var(--brand); box-shadow: none; }
.btn.danger { --b: linear-gradient(135deg, #e5484d, #ff6f61); box-shadow: 0 8px 22px rgba(229,72,77,.25); }
.btn.sm { padding: 9px 14px; font-size: 13.5px; min-height: 36px; } .btn.lg { padding: 17px 28px; font-size: 16.5px; min-height: 56px; }
.btn.block { width: 100%; }
.icon-btn { appearance: none; border: 1px solid var(--line); background: var(--card); color: var(--ink); width: 40px; height: 40px; border-radius: 12px; display: inline-grid; place-items: center; cursor: pointer; font-size: 18px; transition: background .2s; }
.icon-btn:hover { background: var(--grad-soft); }
.spinner { width: 18px; height: 18px; border-radius: 50%; border: 2.5px solid rgba(255,255,255,.4); border-top-color: #fff; animation: spin .7s linear infinite; }
.btn.ghost .spinner, .btn.soft .spinner { border-color: var(--line); border-top-color: var(--brand); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- forms ---------- */
.field { display: block; }
.field > span { display: block; font-size: 13.5px; font-weight: 650; color: var(--ink2); margin: 0 0 6px 2px; }
.input, select.input, textarea.input { width: 100%; font: 500 15.5px "Jakarta", sans-serif; color: var(--ink); background: var(--bg2); border: 1.5px solid var(--line); border-radius: var(--r-sm); padding: 13px 15px; transition: border-color .2s, box-shadow .2s; min-height: 48px; }
.input:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px rgba(91,76,245,.14); }
textarea.input { min-height: 110px; resize: vertical; }
.hint { font-size: 12.5px; color: var(--ink3); margin: 6px 2px 0; }
.err { color: var(--danger); font-size: 13.5px; font-weight: 600; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--ink2); cursor: pointer; }
.check input { width: 18px; height: 18px; accent-color: var(--brand); margin-top: 2px; flex: none; }
.hp { position: absolute !important; left: -10000px !important; width: 1px; height: 1px; opacity: 0; } /* bot trap field */
.pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill { appearance: none; border: 1.5px solid var(--line); background: var(--bg2); color: var(--ink2); padding: 9px 14px; border-radius: 999px; font: 600 14px "Jakarta", sans-serif; cursor: pointer; transition: all .2s var(--ease); }
.pill[aria-pressed="true"] { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(91,76,245,.25); }
.otp { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; max-width: 360px; }
.otp input { text-align: center; font: 700 24px "Fredoka", sans-serif; padding: 12px 0; }
.seg { display: inline-flex; background: var(--grad-soft); padding: 4px; border-radius: 999px; border: 1px solid var(--line); }
.seg button { appearance: none; border: 0; background: transparent; padding: 9px 16px; border-radius: 999px; font: 700 14px "Jakarta", sans-serif; color: var(--ink2); cursor: pointer; transition: all .25s var(--ease); }
.seg button[aria-pressed="true"] { background: var(--card-solid); color: var(--brand); box-shadow: var(--shadow); }

/* ---------- top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 40; backdrop-filter: blur(16px) saturate(1.5); -webkit-backdrop-filter: blur(16px) saturate(1.5); background: color-mix(in srgb, var(--bg) 72%, transparent); border-bottom: 1px solid var(--line); }
.topbar .wrap { display: flex; align-items: center; gap: 14px; height: 66px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font: 700 21px "Fredoka", sans-serif; color: var(--ink) !important; text-decoration: none !important; letter-spacing: -.01em; }
.logo .mark { width: 36px; height: 36px; }
.nav { display: flex; gap: 4px; margin-left: 12px; }
.nav a { padding: 9px 14px; border-radius: 12px; color: var(--ink2); font-weight: 650; font-size: 14.5px; text-decoration: none; transition: all .2s; display: inline-flex; gap: 7px; align-items: center; }
.nav a:hover { background: var(--grad-soft); color: var(--ink); }
.nav a[aria-current="page"] { background: var(--grad-soft); color: var(--brand); }
.lang { display: inline-flex; border: 1.5px solid var(--line); border-radius: 999px; overflow: hidden; }
.lang button { appearance: none; border: 0; background: transparent; padding: 7px 11px; font: 800 12.5px "Jakarta", sans-serif; color: var(--ink3); cursor: pointer; letter-spacing: .04em; }
.lang button[aria-pressed="true"] { background: var(--grad); color: #fff; }
.menu { position: relative; }
.menu-pop { position: absolute; right: 0; top: calc(100% + 8px); min-width: 230px; background: var(--card-solid); border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-lg); padding: 8px; animation: pop .22s var(--spring); z-index: 60; }
.menu-pop a, .menu-pop button { display: flex; width: 100%; gap: 10px; align-items: center; padding: 10px 12px; border-radius: 12px; color: var(--ink); font: 600 14.5px "Jakarta", sans-serif; background: none; border: 0; cursor: pointer; text-decoration: none; }
.menu-pop a:hover, .menu-pop button:hover { background: var(--grad-soft); }
@keyframes pop { from { opacity: 0; transform: translateY(-6px) scale(.97); } }

/* bottom tab bar on phones */
.tabbar { display: none; }
@media (max-width: 820px) {
  .nav { display: none; }
  .tabbar { display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 45; background: color-mix(in srgb, var(--bg2) 88%, transparent); backdrop-filter: blur(16px); border-top: 1px solid var(--line); padding: 6px 6px calc(6px + env(safe-area-inset-bottom)); justify-content: space-around; }
  .tabbar a { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 6px 2px; border-radius: 14px; color: var(--ink3); font-size: 11px; font-weight: 700; text-decoration: none; }
  .tabbar a span.i { font-size: 21px; line-height: 1; }
  .tabbar a[aria-current="page"] { color: var(--brand); background: var(--grad-soft); }
  main.app { padding-bottom: 96px; }
}
main.app { padding: 28px 0 60px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
.page-head h1 { margin: 0; }
.fade-up { animation: fadeUp .5s var(--ease) both; }
.fade-up:nth-child(2) { animation-delay: .05s } .fade-up:nth-child(3) { animation-delay: .1s } .fade-up:nth-child(4) { animation-delay: .15s }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } }

/* ---------- stats, rings, bars ---------- */
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat b { font: 700 30px/1.1 "Fredoka", sans-serif; letter-spacing: -.01em; }
.stat small { color: var(--ink3); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: .06em; }
.stat-ico { width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; font-size: 22px; background: var(--grad-soft); margin-bottom: 10px; }
.ring { --p: 0; --c: var(--brand); width: 64px; height: 64px; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--c) calc(var(--p) * 1%), color-mix(in srgb, var(--c) 14%, transparent) 0); position: relative; flex: none; }
.ring::after { content: ""; position: absolute; inset: 7px; border-radius: 50%; background: var(--card-solid); }
.ring span { position: relative; z-index: 1; font: 700 15px "Fredoka", sans-serif; }
.bar { height: 10px; border-radius: 999px; background: color-mix(in srgb, var(--brand) 12%, transparent); overflow: hidden; }
.bar > i { display: block; height: 100%; border-radius: inherit; background: var(--grad); transition: width .8s var(--ease); }
.spark { display: flex; align-items: flex-end; gap: 5px; height: 90px; }
.spark i { flex: 1; border-radius: 6px 6px 3px 3px; background: var(--grad); min-height: 4px; opacity: .9; transition: height .6s var(--ease); }
.spark i.zero { background: var(--line); }
table.t { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 14px; }
table.t th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink3); font-weight: 700; padding: 10px 12px; border-bottom: 1px solid var(--line); }
table.t td { padding: 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
table.t tr:last-child td { border-bottom: 0; }
.scroll-x { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ---------- avatars / mascot ---------- */
.avatar { width: 52px; height: 52px; border-radius: 18px; display: grid; place-items: center; font-size: 28px; background: var(--grad-soft); flex: none; border: 1px solid var(--line); }
.avatar.lg { width: 76px; height: 76px; font-size: 42px; border-radius: 26px; }
.mascot { width: 120px; height: 120px; flex: none; filter: drop-shadow(0 14px 24px rgba(91,76,245,.25)); }
.mascot .eye { animation: blink 5s infinite; transform-origin: center; transform-box: fill-box; }
@keyframes blink { 0%, 92%, 100% { transform: scaleY(1); } 95% { transform: scaleY(.1); } }
.float { animation: float 4s ease-in-out infinite; } @keyframes float { 50% { transform: translateY(-8px); } }

/* ---------- toasts, modal ---------- */
.toasts { position: fixed; z-index: 100; left: 50%; bottom: 24px; transform: translateX(-50%); display: grid; gap: 8px; width: min(440px, 100% - 32px); }
@media (max-width: 820px) { .toasts { bottom: 96px; } }
.toast { background: var(--ink); color: var(--bg); border-radius: 16px; padding: 13px 18px; font-weight: 600; box-shadow: var(--shadow-lg); animation: fadeUp .3s var(--spring); display: flex; gap: 10px; align-items: center; }
.toast.bad { background: var(--danger); color: #fff; } .toast.ok { background: var(--ok); color: #fff; }
.modal-bg { position: fixed; inset: 0; z-index: 90; background: rgba(12, 10, 29, .45); backdrop-filter: blur(6px); display: grid; place-items: center; padding: 16px; animation: fade .2s; }
@keyframes fade { from { opacity: 0 } }
.modal { width: min(560px, 100%); max-height: calc(100vh - 32px); overflow: auto; background: var(--card-solid); border-radius: 26px; padding: 26px; box-shadow: var(--shadow-lg); animation: pop .3s var(--spring); border: 1px solid var(--line); }

/* ---------- public: hero, auth ---------- */
.hero { padding: 64px 0 40px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: center; }
@media (max-width: 900px) { .hero { grid-template-columns: 1fr; padding-top: 32px; } }
.hero h1 { font-size: clamp(36px, 6vw, 64px); font-weight: 800; letter-spacing: -.035em; }
.hero p.lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--ink2); max-width: 560px; }
.hero-art { position: relative; aspect-ratio: 1 / .92; }
.hero-art .bubble { position: absolute; background: var(--card-solid); border: 1px solid var(--line); border-radius: 22px; padding: 14px 16px; box-shadow: var(--shadow-lg); font-weight: 600; font-size: 14px; max-width: 250px; }
.hero-art .b1 { top: 4%; left: 0; animation: float 5s ease-in-out infinite; }
.hero-art .b2 { top: 40%; right: 0; animation: float 6s ease-in-out infinite reverse; }
.hero-art .b3 { bottom: 4%; left: 10%; animation: float 5.5s ease-in-out infinite; }
.hero-art .orb { position: absolute; inset: 14% 16%; border-radius: 50%; background: radial-gradient(circle at 50% 50%, rgba(255,255,255,.95) 0 44%, rgba(255,255,255,.35) 45% 52%, transparent 53%), var(--grad); box-shadow: 0 40px 120px rgba(139, 92, 246, .45); display: grid; place-items: center; }
.hero-art .orb .mascot { width: 66%; height: 66%; filter: drop-shadow(0 16px 24px rgba(91,76,245,.35)); animation: float 4.5s ease-in-out infinite; }
.feature .stat-ico { width: 52px; height: 52px; font-size: 26px; border-radius: 16px; }
.price { position: relative; }
.price.best { border: 2px solid transparent; background: linear-gradient(var(--card-solid), var(--card-solid)) padding-box, var(--grad) border-box; }
.price .amount { font: 700 44px/1 "Fredoka", sans-serif; letter-spacing: -.02em; }
.price ul { list-style: none; padding: 0; margin: 16px 0 22px; } .price li { padding: 6px 0 6px 28px; position: relative; color: var(--ink2); }
.price li::before { content: "✓"; position: absolute; left: 0; top: 6px; width: 20px; height: 20px; border-radius: 50%; background: rgba(18,163,127,.14); color: var(--ok); font-size: 12px; font-weight: 800; display: grid; place-items: center; }
.auth { min-height: calc(100vh - 66px); display: grid; place-items: center; padding: 32px 0 60px; }
.auth .card { width: min(460px, 100%); padding: 32px; }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; margin-bottom: 22px; }
.footer { border-top: 1px solid var(--line); padding: 30px 0 50px; color: var(--ink3); font-size: 13.5px; margin-top: 50px; }
.notice { border-radius: 16px; padding: 14px 16px; background: var(--grad-soft); border: 1px solid var(--line); font-size: 14px; color: var(--ink2); }
.notice.warn { background: rgba(255, 201, 77, .14); } .notice.bad { background: rgba(229,72,77,.10); color: var(--danger); }

/* ---------- student skin ---------- */
.kid h1, .kid h2, .kid h3, .kid .btn { font-family: "Fredoka", "Jakarta", sans-serif; }
.kid h1 { font-weight: 600; }
.kid .btn { font-weight: 600; font-size: 16px; }
.kid-hero { display: flex; align-items: center; gap: 20px; padding: 26px; border-radius: 30px; background: var(--grad); color: #fff; box-shadow: 0 30px 60px rgba(91,76,245,.28); position: relative; overflow: hidden; }
.kid-hero::after { content: ""; position: absolute; width: 380px; height: 380px; right: -120px; top: -160px; border-radius: 50%; background: rgba(255,255,255,.12); }
.kid-hero .mascot { width: 104px; height: 104px; }
.kid-hero h1 { color: #fff; margin-bottom: 4px; }
.kid-hero .chips { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.kid-hero .chip { background: rgba(255,255,255,.2); color: #fff; border-color: rgba(255,255,255,.3); font-size: 14px; padding: 6px 13px; }
.tile { border-radius: 26px; padding: 22px; color: #fff; position: relative; overflow: hidden; cursor: pointer; min-height: 150px; display: flex; flex-direction: column; justify-content: space-between; transition: transform .35s var(--spring), box-shadow .3s; box-shadow: 0 16px 34px rgba(0,0,0,.12); text-decoration: none !important; }
.tile:hover { transform: translateY(-5px) rotate(-.5deg); box-shadow: 0 24px 46px rgba(0,0,0,.18); }
.tile .big { font-size: 40px; line-height: 1; }
.tile h3 { color: #fff; font-family: "Fredoka", sans-serif; font-size: 22px; font-weight: 600; margin: 0; }
.tile p { margin: 4px 0 0; opacity: .9; font-size: 14px; }
.tile::after { content: ""; position: absolute; width: 160px; height: 160px; right: -50px; bottom: -60px; background: rgba(255,255,255,.14); border-radius: 50%; }
.t-tutor { background: linear-gradient(135deg, #5b4cf5, #8b5cf6); } .t-books { background: linear-gradient(135deg, #ff7a59, #ff6fb5); }
.t-quiz { background: linear-gradient(135deg, #12b886, #38bdf8); } .t-class { background: linear-gradient(135deg, #f59f00, #ff7a59); }
.subj { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: 18px; background: var(--card); border: 1px solid var(--line); cursor: pointer; transition: all .25s var(--spring); font-weight: 650; text-align: left; font-family: inherit; font-size: 15px; color: var(--ink); width: 100%; }
.subj:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.subj[aria-pressed="true"] { border-color: var(--brand); box-shadow: 0 0 0 3px rgba(91,76,245,.18); }
.subj .ic { width: 42px; height: 42px; border-radius: 13px; display: grid; place-items: center; font-size: 21px; color: #fff; flex: none; }

/* chat */
.chat { display: grid; grid-template-rows: auto 1fr auto; height: calc(100vh - 66px - 56px); min-height: 520px; }
@media (max-width: 820px) { .chat { height: calc(100vh - 66px - 110px); } }
.chat-log { overflow-y: auto; padding: 18px 4px; display: flex; flex-direction: column; gap: 14px; scroll-behavior: smooth; }
.msg { max-width: min(680px, 88%); padding: 13px 17px; border-radius: 22px; line-height: 1.6; font-size: 15.5px; animation: fadeUp .3s var(--ease); word-wrap: break-word; }
.msg.me { align-self: flex-end; background: var(--grad); color: #fff; border-bottom-right-radius: 6px; }
.msg.ai { align-self: flex-start; background: var(--card-solid); border: 1px solid var(--line); border-bottom-left-radius: 6px; box-shadow: var(--shadow); }
.msg.ai p:last-child { margin-bottom: 0; } .msg ul, .msg ol { margin: .3em 0 .6em; padding-left: 1.3em; } .msg code { background: var(--grad-soft); padding: 1px 6px; border-radius: 6px; font-size: .92em; }
.msg h4 { margin: .4em 0 .3em; font-size: 15.5px; }
.typing { display: inline-flex; gap: 4px; } .typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--brand2); animation: bounce 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .15s } .typing i:nth-child(3) { animation-delay: .3s }
@keyframes bounce { 0%, 60%, 100% { transform: translateY(0); opacity: .5 } 30% { transform: translateY(-6px); opacity: 1 } }
.composer { display: flex; gap: 8px; align-items: flex-end; background: var(--card-solid); border: 1.5px solid var(--line); border-radius: 26px; padding: 8px; box-shadow: var(--shadow-lg); }
.composer textarea { flex: 1; border: 0; background: transparent; resize: none; font: 500 16px "Jakarta", sans-serif; color: var(--ink); padding: 10px 8px; max-height: 160px; min-height: 44px; outline: none; }
.composer .btn { min-height: 44px; padding: 0 18px; }
.rec { background: var(--danger) !important; color: #fff !important; animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { box-shadow: 0 0 0 10px rgba(229,72,77,.15); } }
.suggest { display: flex; gap: 8px; flex-wrap: wrap; margin: 6px 0 10px; }

/* library + reader */
.book { border-radius: 20px; aspect-ratio: 3 / 4; padding: 18px; color: #fff; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; cursor: pointer; box-shadow: 0 18px 40px rgba(0,0,0,.18), inset 8px 0 0 rgba(0,0,0,.12); transition: transform .35s var(--spring); border: 0; text-align: left; font-family: inherit; }
.book:hover { transform: translateY(-6px) rotate(-1deg); }
.book h3 { color: #fff; font-family: "Fredoka", sans-serif; font-size: 19px; font-weight: 600; margin: 0; }
.book .lock { position: absolute; inset: 0; background: rgba(12,10,29,.55); display: grid; place-items: center; font-size: 34px; backdrop-filter: blur(2px); }
.book .prog { height: 6px; border-radius: 9px; background: rgba(255,255,255,.3); overflow: hidden; } .book .prog i { display: block; height: 100%; background: #fff; }
.reader { position: fixed; inset: 0; z-index: 80; background: #0c0a1d; display: grid; grid-template-rows: auto 1fr auto; color: #fff; }
.reader header, .reader footer { display: flex; align-items: center; gap: 10px; padding: 10px 14px; background: rgba(255,255,255,.04); }
.reader .stage { overflow: auto; display: grid; place-items: center; padding: 12px; touch-action: pan-x pan-y pinch-zoom; }
.reader .stage img { max-width: 100%; max-height: 100%; border-radius: 6px; box-shadow: 0 20px 60px rgba(0,0,0,.6); background: #fff; transition: opacity .25s; }
.reader .stage.zoom img { max-width: none; max-height: none; width: 160%; }
.reader .icon-btn { background: rgba(255,255,255,.08); color: #fff; border-color: rgba(255,255,255,.12); }
.reader input[type=range] { flex: 1; accent-color: var(--pink); }
.toc { position: absolute; top: 56px; left: 10px; width: min(360px, 100% - 20px); max-height: 70vh; overflow: auto; background: #18153a; border-radius: 18px; padding: 8px; box-shadow: var(--shadow-lg); z-index: 2; }
.toc button { display: flex; width: 100%; justify-content: space-between; gap: 10px; padding: 10px 12px; color: #fff; background: none; border: 0; border-radius: 10px; text-align: left; font: 500 14px "Jakarta", sans-serif; cursor: pointer; }
.toc button:hover { background: rgba(255,255,255,.08); }

/* quiz */
.q-card { max-width: 720px; margin: 0 auto; }
.q-progress { display: flex; gap: 6px; margin-bottom: 18px; } .q-progress i { flex: 1; height: 8px; border-radius: 9px; background: var(--line); } .q-progress i.done { background: var(--grad); }
.q-text { font: 600 clamp(19px, 2.6vw, 24px)/1.4 "Fredoka", sans-serif; margin-bottom: 18px; }
.opt { display: flex; width: 100%; gap: 14px; align-items: center; text-align: left; padding: 16px 18px; border-radius: 18px; border: 2px solid var(--line); background: var(--card-solid); font: 600 16px "Jakarta", sans-serif; color: var(--ink); cursor: pointer; margin-bottom: 10px; transition: all .2s var(--spring); }
.opt:hover { border-color: var(--brand2); transform: translateX(4px); }
.opt .k { width: 34px; height: 34px; border-radius: 11px; display: grid; place-items: center; background: var(--grad-soft); color: var(--brand); font-weight: 800; flex: none; }
.opt[aria-pressed="true"] { border-color: var(--brand); background: color-mix(in srgb, var(--brand) 8%, var(--card-solid)); }
.opt.right { border-color: var(--ok); background: rgba(18,163,127,.10); } .opt.right .k { background: var(--ok); color: #fff; }
.opt.wrong { border-color: var(--danger); background: rgba(229,72,77,.08); } .opt.wrong .k { background: var(--danger); color: #fff; }
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 120; overflow: hidden; }
.confetti i { position: absolute; top: -20px; font-size: 26px; animation: fall 2.6s linear forwards; }
@keyframes fall { to { transform: translateY(110vh) rotate(720deg); } }
.score-big { font: 700 72px/1 "Fredoka", sans-serif; }

/* teacher / admin dense views */
.side-layout { display: grid; grid-template-columns: 240px 1fr; gap: 22px; }
@media (max-width: 960px) { .side-layout { grid-template-columns: 1fr; } }
.side { position: sticky; top: 86px; align-self: start; display: flex; flex-direction: column; gap: 4px; }
@media (max-width: 960px) { .side { position: static; flex-direction: row; overflow-x: auto; } }
.side a { padding: 11px 14px; border-radius: 14px; color: var(--ink2); font-weight: 650; text-decoration: none; display: flex; gap: 10px; align-items: center; white-space: nowrap; }
.side a:hover { background: var(--grad-soft); } .side a[aria-current="page"] { background: var(--card-solid); color: var(--brand); box-shadow: var(--shadow); }
.heat { display: inline-grid; place-items: center; min-width: 46px; padding: 4px 8px; border-radius: 9px; font-weight: 700; font-size: 13px; }
.code-box { font: 700 30px/1 "Fredoka", monospace; letter-spacing: .18em; padding: 16px 20px; border-radius: 18px; background: var(--grad-soft); border: 1px dashed var(--brand2); text-align: center; color: var(--brand); }
.qr { background: #fff; padding: 12px; border-radius: 18px; width: 220px; height: 220px; margin: 0 auto; display: grid; place-items: center; }
.qr svg { width: 100%; height: 100%; }
.empty { text-align: center; padding: 40px 20px; color: var(--ink2); }
.empty .big { font-size: 46px; margin-bottom: 8px; }
.skeleton { background: linear-gradient(90deg, var(--line), color-mix(in srgb, var(--line) 30%, transparent), var(--line)); background-size: 200% 100%; animation: shimmer 1.3s infinite; border-radius: 14px; min-height: 18px; }
@keyframes shimmer { to { background-position: -200% 0; } }
.banner { display: flex; gap: 12px; align-items: center; padding: 12px 16px; border-radius: 16px; margin-bottom: 18px; background: rgba(255,201,77,.16); border: 1px solid rgba(255,201,77,.4); font-weight: 600; font-size: 14px; }
.legal { max-width: 760px; } .legal h2 { margin-top: 1.4em; }

/* small phones: the bar keeps the mark, the language switch and the menu fully visible */
@media (max-width: 480px) {
  .topbar .wrap { gap: 8px; }
  .logo > span { display: none; }
  .topbar .btn.sm { padding: 8px 12px; }
  .kid-hero { padding: 20px; gap: 14px; }
  .kid-hero .mascot { width: 76px; height: 76px; }
  .kid-hero h1 { font-size: 26px; }
  .card { padding: 18px; }
}

/* ---------- Teman: the friendly copilot ---------- */
.teman-face { width: 64px; height: 64px; overflow: visible; }
.teman-face.sm { width: 44px; height: 44px; }
.teman-face .t-eye { animation: blink 4.5s infinite; transform-origin: center; transform-box: fill-box; }
.teman-face .t-star { animation: twinkle 2.4s ease-in-out infinite; transform-origin: 60px 10px; }
.teman-face .t-wave { animation: wave 2.8s ease-in-out infinite; transform-origin: 100px 72px; }
.teman-face .t-spark { animation: sparkle 3s ease-in-out infinite; }
@keyframes twinkle { 50% { transform: rotate(18deg) scale(1.15); } }
@keyframes wave { 0%, 60%, 100% { transform: rotate(0); } 70% { transform: rotate(-14deg); } 80% { transform: rotate(10deg); } 90% { transform: rotate(-8deg); } }
@keyframes sparkle { 0%, 100% { opacity: .35; } 50% { opacity: 1; } }
.teman-launch { position: fixed; right: 18px; bottom: 18px; z-index: 70; width: 78px; height: 78px; border-radius: 50%; border: 0; cursor: pointer; padding: 6px;
  background: radial-gradient(circle at 35% 30%, #fff 0 30%, #fff6d6 60%, #ffe3a3 100%); box-shadow: 0 14px 34px rgba(255, 138, 92, .45), 0 0 0 4px rgba(255,255,255,.7);
  animation: bob 3.2s ease-in-out infinite; transition: transform .3s var(--spring); }
.teman-launch:hover { transform: scale(1.08) rotate(-4deg); }
.teman-launch .teman-face { width: 100%; height: 100%; }
.teman-ping { position: absolute; top: 4px; right: 4px; width: 16px; height: 16px; border-radius: 50%; background: #ff6fb5; border: 3px solid #fff; animation: ping 2s infinite; }
@keyframes ping { 0% { box-shadow: 0 0 0 0 rgba(255,111,181,.6); } 80%, 100% { box-shadow: 0 0 0 12px rgba(255,111,181,0); } }
@keyframes bob { 50% { transform: translateY(-6px); } }
.teman-peek { position: fixed; right: 104px; bottom: 34px; z-index: 70; max-width: 290px; text-align: left; border: 0; cursor: pointer;
  background: #fff; color: #2a1d4f; font: 600 14.5px/1.45 "Fredoka", "Jakarta", sans-serif; padding: 14px 34px 14px 16px; border-radius: 22px 22px 6px 22px;
  box-shadow: 0 16px 40px rgba(60,40,180,.22); animation: pop .4s var(--spring); }
.teman-peek .x { position: absolute; top: 6px; right: 10px; color: #8a86a8; font-size: 12px; }
.teman-panel { position: fixed; right: 18px; bottom: 18px; z-index: 75; width: min(410px, calc(100vw - 24px)); height: min(640px, calc(100vh - 100px));
  display: grid; grid-template-rows: auto 1fr auto; background: var(--card-solid); border-radius: 28px; overflow: hidden;
  box-shadow: 0 30px 80px rgba(60,40,180,.30); border: 1px solid var(--line); animation: pop .35s var(--spring); }
.teman-head { display: flex; align-items: center; gap: 10px; padding: 12px 14px; color: #2a1d4f;
  background: linear-gradient(120deg, #ffe48a 0%, #ffb37a 45%, #ff8fc8 100%); }
.teman-head b { font: 700 19px "Fredoka", sans-serif; }
.teman-head .teman-sub { font-size: 12.5px; font-weight: 600; opacity: .8; }
.teman-head .icon-btn { background: rgba(255,255,255,.55); border-color: transparent; color: #2a1d4f; }
.teman-log { overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 10px;
  background: radial-gradient(circle at 10% 0%, rgba(255,201,77,.12), transparent 40%), radial-gradient(circle at 100% 100%, rgba(255,111,181,.10), transparent 45%); }
.tmsg { max-width: 92%; padding: 11px 14px; border-radius: 20px; font-size: 14.8px; line-height: 1.55; animation: fadeUp .3s var(--ease); word-wrap: break-word; }
.tmsg.bot { align-self: flex-start; background: var(--bg); border: 1px solid var(--line); border-bottom-left-radius: 6px; }
.tmsg.me { align-self: flex-end; background: linear-gradient(135deg, #ff8a5c, #ff6fb5); color: #fff; border-bottom-right-radius: 6px; font-weight: 600; }
.tmsg p { margin: 0 0 .4em; } .tmsg p:last-child { margin: 0; } .tmsg ul, .tmsg ol { margin: .2em 0 .4em; padding-left: 1.2em; }
.tm-actions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.tm-actions .btn { --b: linear-gradient(135deg, #ff8a5c, #ff6fb5); box-shadow: 0 6px 16px rgba(255,111,181,.3); }
.tm-chips { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 4px; }
.tm-chips .pill { font-size: 13.5px; padding: 8px 12px; }
.tm-chips .tm-hero { background: linear-gradient(135deg, #ffc94d, #ff8a5c); color: #2a1d4f; border-color: transparent; font-weight: 700; box-shadow: 0 6px 16px rgba(255,138,92,.35); animation: bob 2.6s ease-in-out infinite; }
.teman-compose { display: flex; gap: 8px; align-items: center; padding: 10px 12px; border-top: 1px solid var(--line); background: var(--card-solid); }
.teman-compose input { flex: 1; min-width: 0; border: 1.5px solid var(--line); background: var(--bg2); color: var(--ink); border-radius: 999px; padding: 11px 15px; font: 500 15px "Jakarta", sans-serif; }
.teman-compose input:focus { outline: none; border-color: #ff8a5c; box-shadow: 0 0 0 4px rgba(255,138,92,.16); }
.teman-compose .btn { --b: linear-gradient(135deg, #ff8a5c, #ff6fb5); min-width: 46px; }
.tm-choices { padding: 10px 12px; border-top: 1px solid var(--line); display: grid; gap: 10px; background: var(--card-solid); max-height: 46vh; overflow-y: auto; }
.tm-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.tm-grid .pill { padding: 9px 6px; font-size: 13.5px; }
.tm-wiz-foot { display: flex; justify-content: flex-end; padding: 0 12px 8px; background: var(--card-solid); }
.tm-choices .tm-wiz-foot { padding: 0; }
.tm-meter { height: 6px; margin: 0 14px 6px; border-radius: 9px; background: var(--line); overflow: hidden; }
.tm-meter i { display: block; height: 100%; width: 0; border-radius: inherit; transition: width .3s, background .3s; }
.tm-meter i.s1 { width: 33%; background: #ff6f61; } .tm-meter i.s2 { width: 66%; background: #ffc94d; } .tm-meter i.s3, .tm-meter i.s4 { width: 100%; background: #22c9a0; }
@media (max-width: 820px) {
  .teman-launch { bottom: 86px; right: 12px; width: 66px; height: 66px; }
  .teman-peek { bottom: 100px; right: 88px; max-width: calc(100vw - 110px); }
  .teman-panel { right: 8px; left: 8px; width: auto; bottom: 8px; height: calc(100vh - 80px); border-radius: 24px; }
}
@media (prefers-reduced-motion: reduce) { .teman-launch, .tm-hero { animation: none; } }

/* Teman v2: welcome cards, thinking, listen */
.teman-face.xs { width: 30px; height: 30px; animation: bob 1.2s ease-in-out infinite; }
.tm-thinking { display: inline-flex; align-items: center; gap: 8px; }
.tm-listen { margin-top: 8px; border: 0; background: rgba(255,138,92,.12); color: #c2410c; border-radius: 999px; padding: 4px 10px; font: 700 12px "Jakarta", sans-serif; cursor: pointer; }
:root[data-theme="dark"] .tm-listen { color: #ffb37a; }
.tm-welcome { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 4px; }
.tm-big { border: 0; cursor: pointer; text-align: left; border-radius: 18px; padding: 12px; display: flex; flex-direction: column; gap: 4px; color: #2a1d4f; font: 600 13.5px/1.3 "Fredoka", "Jakarta", sans-serif; transition: transform .25s var(--spring), box-shadow .25s; box-shadow: 0 6px 16px rgba(60,40,180,.10); }
.tm-big:hover { transform: translateY(-3px) rotate(-.6deg); box-shadow: 0 10px 24px rgba(60,40,180,.18); }
.tm-big span { font-size: 24px; } .tm-big b { font-weight: 700; } .tm-big small { font: 500 12px "Jakarta", sans-serif; opacity: .8; }
.tm-big-1 { grid-column: 1 / -1; background: linear-gradient(135deg, #ffd65a, #ff8a5c 60%, #ff6fb5); color: #2a1d4f; animation: bob 3s ease-in-out infinite; }
.tm-big-2 { background: #e9e5ff; } .tm-big-3 { background: #ffe3ef; } .tm-big-4 { background: #dcf7ee; }
:root[data-theme="dark"] .tm-big-2 { background: #2a2459; color: #f2f0ff; } :root[data-theme="dark"] .tm-big-3 { background: #3d2140; color: #f2f0ff; } :root[data-theme="dark"] .tm-big-4 { background: #173a33; color: #f2f0ff; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .tm-big-2 { background: #2a2459; color: #f2f0ff; } :root:not([data-theme="light"]) .tm-big-3 { background: #3d2140; color: #f2f0ff; } :root:not([data-theme="light"]) .tm-big-4 { background: #173a33; color: #f2f0ff; } }
.teman-compose .icon-btn { flex: none; }
.maint { background: linear-gradient(90deg, #ffc94d, #ff8a5c); color: #2a1d4f; text-align: center; font-weight: 700; padding: 8px 12px; font-size: 14px; }
.side-group { font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .08em; color: var(--ink3); padding: 12px 14px 4px; }
.link-btn { background: none; border: 0; padding: 0; color: var(--ink); cursor: pointer; font: inherit; text-align: left; }
.link-btn:hover { color: var(--brand); text-decoration: underline; }
.faded { opacity: .55; }