/* EDUAI curriculum preview — builds on /landing.css (colours, nav, buttons). */
.cur main { position: relative; z-index: 1; max-width: var(--max); margin: 0 auto; padding: 36px clamp(16px, 4vw, 32px) 80px; }
.cur-loading { color: var(--muted); }
.cur-footer { max-width: var(--max); margin: 0 auto; padding: 32px clamp(16px, 4vw, 32px) 48px; color: var(--muted); font-size: 13px; border-top: 1px solid var(--line); }
.cur h1 { margin: 10px 0 12px; font-size: clamp(28px, 3.6vw, 46px); }
.cur h2 { font-size: 24px; margin: 0 0 6px; letter-spacing: -.01em; }
.cur h3 { font-size: 17px; margin: 0 0 8px; }
.cur-lede { color: #c3cfe8; max-width: 760px; font-size: 17px; }
.cur-note { display: inline-flex; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; background: rgba(13, 24, 48, .6); }
.cur-stats { display: flex; flex-wrap: wrap; gap: 14px 34px; margin: 24px 0 28px; }
.cur-stats b { display: block; font-size: 28px; font-weight: 800; }
.cur-stats span { color: var(--muted); font-size: 13px; }

.seg-toggle { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 4px; background: rgba(13, 24, 48, .7); gap: 4px; }
.seg-toggle button { border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 14px; padding: 8px 16px; border-radius: 999px; cursor: pointer; }
.seg-toggle button.on { background: linear-gradient(135deg, var(--cyan), var(--violet)); color: #041022; font-weight: 700; }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; margin: 8px 0 26px; }
.legend { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--muted); }

.quarter { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); padding: 24px; margin: 0 0 22px; }
.quarter-head { display: grid; grid-template-columns: auto 1fr; gap: 6px 16px; align-items: start; margin-bottom: 18px; }
.q-badge { width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; font-weight: 800; font-size: 18px; color: #041022; background: linear-gradient(135deg, var(--cyan), var(--teal)); grid-row: span 2; }
.quarter:nth-of-type(2) .q-badge { background: linear-gradient(135deg, var(--teal), var(--gold)); }
.quarter:nth-of-type(3) .q-badge { background: linear-gradient(135deg, var(--gold), var(--violet)); }
.quarter:nth-of-type(4) .q-badge { background: linear-gradient(135deg, var(--violet), var(--cyan)); }
.q-dq { color: var(--gold); font-size: 14px; }
.q-outcome { color: #c3cfe8; font-size: 14px; margin: 4px 0 0; }
.lesson-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 12px; }
.lesson-card { display: block; text-decoration: none; border: 1px solid var(--line); border-radius: 14px; padding: 14px; background: rgba(5, 11, 24, .55); transition: border-color .2s, transform .15s; min-height: 120px; }
.lesson-card:hover, .lesson-card:focus-visible { border-color: rgba(34, 211, 238, .6); transform: translateY(-2px); }
.lesson-card .num { font-size: 12px; color: var(--muted); display: flex; justify-content: space-between; gap: 8px; }
.lesson-card .t { font-weight: 700; margin: 6px 0 6px; line-height: 1.3; }
.lesson-card .dq { font-size: 13px; color: var(--muted); }
.lesson-card.full { border-color: rgba(245, 185, 66, .45); background: linear-gradient(160deg, rgba(245, 185, 66, .09), rgba(5, 11, 24, .6)); }
.badge { font-size: 11px; font-weight: 700; letter-spacing: .04em; border-radius: 999px; padding: 2px 8px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.badge.b-full { color: #041022; background: var(--gold); border-color: var(--gold); }
.badge.b-code { color: var(--cyan); border-color: rgba(34, 211, 238, .5); }
.coming { color: var(--muted); font-size: 14px; border: 1px dashed var(--line); border-radius: 14px; padding: 18px; }

/* lesson view */
.back { color: var(--muted); text-decoration: none; font-size: 14px; }
.back:hover { color: var(--ink); }
.lesson-meta { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.dq-big { font-size: 19px; color: var(--gold); margin: 8px 0 18px; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; border-bottom: 1px solid var(--line); margin: 22px 0 22px; }
.tabs button { border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 15px; padding: 10px 14px; border-bottom: 2px solid transparent; cursor: pointer; }
.tabs button.on { color: var(--ink); border-bottom-color: var(--cyan); font-weight: 700; }
.panel { display: grid; gap: 18px; }
.box { border: 1px solid var(--line); border-radius: var(--radius); background: var(--card); padding: 20px; }
.box ul { margin: 6px 0 0; padding-left: 20px; } .box li { margin: 4px 0; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 820px) { .two { grid-template-columns: 1fr; } }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font-size: 13px; border: 1px solid var(--line); border-radius: 999px; padding: 4px 10px; color: #c3cfe8; }
button.chip { background: rgba(34, 211, 238, .08); border-color: rgba(34, 211, 238, .4); color: var(--ink); cursor: pointer; font: inherit; font-size: 13px; text-align: left; }
button.chip:hover { background: rgba(34, 211, 238, .18); }

.flow { display: grid; gap: 10px; }
.flow-step { display: grid; grid-template-columns: 96px 1fr 1fr; gap: 14px; border: 1px solid var(--line); border-radius: 14px; padding: 14px; background: rgba(5, 11, 24, .5); }
@media (max-width: 820px) { .flow-step { grid-template-columns: 1fr; } }
.flow-time b { display: block; font-size: 18px; } .flow-time span { font-size: 12px; color: var(--cyan); text-transform: uppercase; letter-spacing: .06em; }
.flow-step h4 { margin: 0 0 4px; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; }
.flow-bar { display: flex; height: 12px; border-radius: 999px; overflow: hidden; margin: 6px 0 16px; }
.flow-bar i { display: block; height: 100%; }

/* slides */
.deck { position: relative; }
.slide { aspect-ratio: 16 / 9; border-radius: var(--radius); border: 1px solid rgba(34, 211, 238, .3); background: radial-gradient(900px 500px at 85% -20%, rgba(139, 92, 246, .28), transparent 60%), radial-gradient(700px 400px at -10% 120%, rgba(20, 184, 166, .22), transparent 60%), #071026; padding: clamp(20px, 5%, 64px); display: flex; flex-direction: column; justify-content: center; overflow: hidden; position: relative; }
.slide .s-kicker { color: var(--cyan); font-size: clamp(11px, 1.2vw, 15px); letter-spacing: .1em; text-transform: uppercase; }
.slide .s-title { font-size: clamp(22px, 3.6vw, 52px); font-weight: 800; line-height: 1.1; margin: 10px 0 18px; letter-spacing: -.01em; }
.slide ul { margin: 0; padding-left: 1.1em; font-size: clamp(15px, 2vw, 28px); color: #dbe5fb; }
.slide li { margin: .35em 0; }
.slide .s-foot { position: absolute; bottom: 4%; left: 5%; right: 5%; display: flex; justify-content: space-between; font-size: clamp(10px, 1vw, 13px); color: var(--muted); }
.deck-ctl { display: flex; align-items: center; gap: 10px; margin-top: 12px; flex-wrap: wrap; }
.deck-ctl button { border: 1px solid rgba(232, 238, 252, .28); background: transparent; color: var(--ink); border-radius: 999px; padding: 8px 14px; font: inherit; font-size: 14px; cursor: pointer; }
.deck-ctl button:hover { background: rgba(232, 238, 252, .08); }
.deck-ctl .count { color: var(--muted); font-size: 14px; min-width: 60px; text-align: center; }
.deck:fullscreen { background: #030712; display: flex; flex-direction: column; justify-content: center; padding: 3vh 4vw; }
.deck:fullscreen .slide { max-height: 86vh; width: min(100%, calc(86vh * 16 / 9)); margin: 0 auto; }
.deck:fullscreen .deck-ctl { justify-content: center; }
.thumbs { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0; }
.thumbs button { flex: 0 0 auto; width: 150px; text-align: left; border: 1px solid var(--line); border-radius: 10px; background: rgba(5, 11, 24, .6); color: var(--muted); font: inherit; font-size: 12px; padding: 8px; cursor: pointer; }
.thumbs button.on { border-color: var(--cyan); color: var(--ink); }

/* AI coach demo */
.chat { display: grid; gap: 10px; max-height: 460px; overflow-y: auto; padding-right: 4px; }
.msg { border-radius: 14px; padding: 12px 14px; max-width: 86%; white-space: pre-wrap; line-height: 1.5; font-size: 15px; }
.msg.me { justify-self: end; background: rgba(34, 211, 238, .14); border: 1px solid rgba(34, 211, 238, .35); }
.msg.ai { justify-self: start; background: rgba(139, 92, 246, .12); border: 1px solid rgba(139, 92, 246, .35); }
.msg.sys { justify-self: center; background: rgba(245, 185, 66, .1); border: 1px solid rgba(245, 185, 66, .4); font-size: 14px; }
.msg small { display: block; color: var(--muted); font-size: 11px; margin-bottom: 4px; letter-spacing: .05em; text-transform: uppercase; }
.chat-form { display: flex; gap: 8px; margin-top: 12px; }
.chat-form input, .demo-input { flex: 1; min-width: 0; border-radius: 999px; border: 1px solid var(--line); background: rgba(5, 11, 24, .7); color: var(--ink); padding: 11px 16px; font: inherit; font-size: 15px; }
.chat-form button, .run-btn { border: 0; border-radius: 999px; padding: 10px 18px; font: inherit; font-weight: 700; color: #041022; background: linear-gradient(135deg, var(--cyan), var(--violet)); cursor: pointer; }

/* code demo */
.code { margin: 0; border-radius: 14px; border: 1px solid var(--line); background: #030915; padding: 16px; overflow-x: auto; font: 13.5px/1.55 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: #d6e2ff; }
.code .cm { color: #6b7fa8; } .code .kw { color: #c4b5fd; } .code .st { color: #fbd38d; }
.out { border-radius: 14px; border: 1px solid rgba(20, 184, 166, .4); background: rgba(20, 184, 166, .06); padding: 16px; }
.bars { display: grid; gap: 8px; margin: 8px 0 4px; }
.bar-row { display: grid; grid-template-columns: 180px 1fr 60px; gap: 10px; align-items: center; font-size: 14px; }
@media (max-width: 600px) { .bar-row { grid-template-columns: 120px 1fr 52px; font-size: 13px; } }
.bar { height: 14px; border-radius: 999px; background: linear-gradient(90deg, var(--teal), var(--cyan)); }
.bar.hot { background: linear-gradient(90deg, var(--gold), #f97316); }
.verdict { margin-top: 12px; padding: 12px 14px; border-radius: 12px; background: rgba(245, 185, 66, .1); border: 1px solid rgba(245, 185, 66, .45); }
.words { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.w { font: 13px ui-monospace, Menlo, monospace; border-radius: 6px; padding: 2px 6px; border: 1px solid var(--line); }
.w.pos { border-color: rgba(249, 115, 22, .6); color: #fdba74; } .w.neg { border-color: rgba(20, 184, 166, .6); color: #5eead4; }

/* rubric */
.rubric { width: 100%; border-collapse: collapse; font-size: 14px; }
.rubric th, .rubric td { border: 1px solid var(--line); padding: 10px; vertical-align: top; text-align: left; }
.rubric th { color: var(--muted); font-weight: 600; background: rgba(5, 11, 24, .5); }
.rubric td:first-child { font-weight: 700; width: 16%; }
.table-wrap { overflow-x: auto; }
.cur .lang-switch { display: inline-flex; gap: 2px; border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.cur .lang-switch button { border: 0; background: transparent; color: var(--muted); font: inherit; font-size: 12px; padding: 4px 9px; border-radius: 999px; cursor: pointer; }
.cur .lang-switch button.on { background: rgba(232, 238, 252, .12); color: var(--ink); }
@media (prefers-reduced-motion: reduce) { .lesson-card { transition: none; } }
.year-h { margin: 34px 0 16px !important; font-size: 28px !important; }
.badge { display: inline-block; line-height: 1.6; }
.deck { max-width: 980px; }
.deck:fullscreen { max-width: none; }
@media (max-width: 640px) {
  .cur .logo small { display: none; }
  .cur .nav { gap: 8px; padding: 10px 12px; }
  .cur .nav-links { gap: 8px; }
  .cur .nav .btn-primary { padding: 8px 12px; font-size: 13px; white-space: nowrap; }
  .slide { aspect-ratio: auto; min-height: 240px; justify-content: flex-start; padding: 22px 20px 26px; }
  .slide .s-foot { display: none; }
  .tabs button { padding: 8px 10px; font-size: 14px; }
}
.cur .lang-switch button { white-space: nowrap; }