/* ============================================================
   Pages — course cards, course detail, lessons, exams, books,
   checkout, receipt, dashboard
   ============================================================ */

/* ---------- course card ---------- */
.ccard { display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--border-2); border-radius: var(--r-lg); overflow: hidden; box-shadow: var(--sh-1); transition: transform var(--t-med), box-shadow var(--t-med), border-color var(--t-med); }
.ccard:hover { transform: translateY(-6px); box-shadow: var(--sh-2); border-color: var(--primary-100); }
.cover { position: relative; aspect-ratio: 16/9; display: grid; place-items: center; color: #fff; overflow: hidden; }
.cover::after { content: ''; position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,.14) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.14) 1px, transparent 1px); background-size: 26px 26px; opacity: .5; }
.cover__ic { position: relative; z-index: 1; width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; background: rgba(255,255,255,.2); backdrop-filter: blur(6px); border: 1px solid rgba(255,255,255,.3); }
.cover__ic .ic { width: 30px; height: 30px; stroke-width: 1.6; }
.cover__badges { position: absolute; inset-block-start: 12px; inset-inline-start: 12px; display: flex; gap: 6px; flex-wrap: wrap; z-index: 2; }
.cover__icon-abs { position: absolute; inset-block-end: -18px; inset-inline-end: -14px; opacity: .18; z-index: 0; }
.cover__icon-abs .ic { width: 130px; height: 130px; stroke-width: 1.1; }
.c--med { background: linear-gradient(140deg, #0E7490, #0891B2 55%, #22D3EE); }
.c--pharm { background: linear-gradient(140deg, #15803D, #16A34A 55%, #4ADE80); }
.c--dent { background: linear-gradient(140deg, #6D28D9, #7C3AED 55%, #A78BFA); }
.c--slate { background: linear-gradient(140deg, #0F3F4C, #155E75 60%, #0891B2); }

.ccard__b { padding: var(--sp-4); display: flex; flex-direction: column; gap: 10px; flex: 1; }
.ccard__meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: .8rem; color: var(--fg-3); }
.ccard__meta .dot { width: 3px; height: 3px; border-radius: 50%; background: var(--fg-3); }
.ccard h3 { font-size: 1.06rem; line-height: 1.5; }
.ccard h3 a { color: var(--ink); }
.ccard h3 a:hover { color: var(--primary-700); }
.ccard__spec { font-size: .86rem; color: var(--fg-2); display: flex; align-items: center; gap: 7px; }
.ccard__f { margin-top: auto; padding-top: 12px; border-top: 1px dashed var(--border-2); display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.price { font-family: var(--f-head); font-weight: 800; font-size: 1.22rem; color: var(--ink); }
.price s { font-size: .82rem; color: var(--fg-3); font-weight: 500; margin-inline-start: 7px; }
.price--free { color: var(--accent-600); }

/* ---------- specialty tiles ---------- */
.sp-tile { position: relative; overflow: hidden; border-radius: var(--r-xl); padding: var(--sp-6) var(--sp-5); color: #fff; display: flex; flex-direction: column; gap: 12px; min-height: 230px; transition: transform var(--t-med); }
.sp-tile:hover { transform: translateY(-6px); }
.sp-tile h3 { color: #fff; font-size: 1.45rem; }
.sp-tile p { color: rgba(255,255,255,.9); font-size: .95rem; }
.sp-tile__ic { width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; background: rgba(255,255,255,.22); border: 1px solid rgba(255,255,255,.34); }
.sp-tile__ic .ic { width: 30px; height: 30px; }
.sp-tile__go { margin-top: auto; display: inline-flex; align-items: center; gap: 8px; font-weight: 700; font-family: var(--f-head); }

/* ---------- course detail ---------- */
.cd-hero { padding-block: var(--sp-6) var(--sp-7); border-bottom: 1px solid var(--border-2); background: var(--bg-alt); }
.cd-grid { display: grid; grid-template-columns: 1fr 372px; gap: clamp(1.5rem, 3vw, 2.5rem); align-items: start; }
.cd-side { position: sticky; top: 92px; display: flex; flex-direction: column; gap: var(--sp-4); }
.cd-title h1 { font-size: clamp(1.55rem, 3.2vw, 2.35rem); margin-block: 12px; }
.cd-facts { display: flex; gap: var(--sp-4); flex-wrap: wrap; margin-top: var(--sp-4); font-size: .9rem; color: var(--fg-2); }
.cd-facts span { display: inline-flex; align-items: center; gap: 7px; }
.cd-facts .ic { color: var(--primary); }
.buybox { border: 1.5px solid var(--border); border-radius: var(--r-xl); background: var(--surface); box-shadow: var(--sh-2); overflow: hidden; }
.buybox__b { padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-4); }
.buybox__list { display: flex; flex-direction: column; gap: 11px; font-size: .92rem; color: var(--fg-2); }
.buybox__list div { display: flex; gap: 10px; align-items: flex-start; }
.buybox__list .ic { color: var(--accent); margin-top: 3px; width: 18px; height: 18px; }

/* ---------- curriculum ---------- */
.cur__m { border: 1px solid var(--border-2); border-radius: var(--r-md); overflow: hidden; background: var(--surface); }
.cur__m + .cur__m { margin-top: 12px; }
.cur__mh { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: var(--surface-2); }
.cur__mh b { flex: 1; font-family: var(--f-head); }
.lesson-row { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-top: 1px solid var(--border-2); transition: background var(--t-fast); }
.lesson-row:hover { background: var(--primary-050); }
.lesson-row__i { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; flex: none; background: var(--muted); color: var(--fg-2); font-size: .78rem; font-weight: 700; }
.lesson-row.is-done .lesson-row__i { background: var(--accent); color: #fff; }
.lesson-row.is-locked { opacity: .62; }
.lesson-row__t { flex: 1; font-size: .94rem; }
.lesson-row__d { font-size: .8rem; color: var(--fg-3); display: inline-flex; align-items: center; gap: 5px; }
.lesson-row .play { color: var(--primary); }

/* ---------- lesson player ---------- */
.lp { display: grid; grid-template-columns: 1fr 340px; gap: var(--sp-5); align-items: start; }
.lp__stage { border-radius: var(--r-xl); overflow: hidden; border: 1px solid var(--border-2); background: var(--surface); box-shadow: var(--sh-1); }
.lp__player { position: relative; aspect-ratio: 16/9; display: grid; place-items: center; color: #fff; }
.lp__player .big-play { width: 78px; height: 78px; border-radius: 50%; display: grid; place-items: center; background: rgba(255,255,255,.9); color: var(--primary-700); box-shadow: var(--sh-3); transition: transform var(--t-fast); }
.lp__player .big-play:hover { transform: scale(1.08); }
.lp__player .big-play .ic { width: 34px; height: 34px; }
.lp__tag { position: absolute; inset-block-start: 14px; inset-inline-start: 14px; background: rgba(6,46,43,.6); color: #fff; padding: 5px 13px; border-radius: var(--r-pill); font-size: .78rem; font-weight: 700; backdrop-filter: blur(4px); }
.lp__notes { padding: var(--sp-5); }
.lp__notes h2 { margin-bottom: var(--sp-3); }
.note-list { display: flex; flex-direction: column; gap: 11px; margin-top: var(--sp-4); }
.note-list li { display: flex; gap: 11px; align-items: flex-start; font-size: .95rem; color: var(--fg-2); }
.note-list .ic { color: var(--primary); margin-top: 3px; width: 18px; height: 18px; }
.lp__bar { display: flex; align-items: center; gap: 12px; padding: 14px var(--sp-5); border-top: 1px solid var(--border-2); background: var(--surface-2); flex-wrap: wrap; }
.lp__side { display: flex; flex-direction: column; gap: var(--sp-4); position: sticky; top: 92px; max-height: calc(100vh - 110px); overflow-y: auto; }

/* ---------- exams ---------- */
.exam-shell { display: grid; grid-template-columns: 1fr 292px; gap: var(--sp-5); align-items: start; }
.q-card { border: 1.5px solid var(--border); border-radius: var(--r-xl); background: var(--surface); box-shadow: var(--sh-2); overflow: hidden; }
.q-head { display: flex; align-items: center; gap: 12px; padding: var(--sp-4) var(--sp-5); background: var(--surface-2); border-bottom: 1px solid var(--border-2); flex-wrap: wrap; }
.q-body { padding: var(--sp-5); }
.q-text { font-family: var(--f-head); font-size: 1.15rem; font-weight: 700; color: var(--ink); margin-bottom: var(--sp-5); line-height: 1.6; }
.opts { display: flex; flex-direction: column; gap: 11px; }
.opt {
  display: flex; align-items: center; gap: 13px; padding: 14px 17px; border-radius: var(--r-md);
  border: 1.5px solid var(--border); background: var(--surface); text-align: start; font-size: .98rem;
  transition: all var(--t-fast); width: 100%;
}
.opt:hover { border-color: var(--primary); background: var(--primary-050); }
.opt.is-sel { border-color: var(--primary); background: var(--primary-050); color: var(--primary-700); font-weight: 600; }
.opt.is-right { border-color: var(--accent); background: var(--accent-050); color: #14532D; }
.opt.is-wrong { border-color: var(--danger); background: var(--danger-050); color: #991B1B; }
.opt__k { width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; flex: none; background: var(--muted); font-family: var(--f-head); font-weight: 800; font-size: .86rem; }
.opt.is-sel .opt__k { background: var(--primary); color: #fff; }
.opt.is-right .opt__k { background: var(--accent); color: #fff; }
.opt.is-wrong .opt__k { background: var(--danger); color: #fff; }
.opt .ic { margin-inline-start: auto; }
.opt.is-right .ic { color: var(--accent-600); }
.opt.is-wrong .ic { color: var(--danger); }

.timer {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; border-radius: var(--r-pill);
  background: var(--primary-050); color: var(--primary-700); font-family: var(--f-head); font-weight: 800;
  font-variant-numeric: tabular-nums; border: 1px solid var(--primary-100);
}
.timer.is-low { background: var(--danger-050); color: var(--danger); border-color: #FECACA; animation: pulse 1s infinite; }
@keyframes pulse { 50% { opacity: .55; } }
.qnav { display: grid; grid-template-columns: repeat(auto-fill, minmax(42px, 1fr)); gap: 8px; }
.qnav button {
  aspect-ratio: 1; border-radius: var(--r-sm); border: 1.5px solid var(--border); background: var(--surface);
  font-family: var(--f-head); font-weight: 700; font-size: .88rem; color: var(--fg-2); transition: all var(--t-fast);
}
.qnav button:hover { border-color: var(--primary); }
.qnav button.is-done { background: var(--primary-050); border-color: var(--primary-100); color: var(--primary-700); }
.qnav button.is-cur { background: var(--primary); border-color: var(--primary); color: #fff; }
.qnav button.is-flag::after { content: ''; position: absolute; }

.result-hero { text-align: center; padding: var(--sp-6) var(--sp-4); border-radius: var(--r-xl); color: #fff; }
.result-hero h2 { color: #fff; font-size: clamp(1.6rem, 4vw, 2.4rem); }
.result-hero p { color: rgba(255,255,255,.92); }
.result-hero .score-big { font-family: var(--f-head); font-size: clamp(3rem, 9vw, 4.6rem); font-weight: 800; line-height: 1; margin-block: 10px; }
.rg-ok { background: linear-gradient(140deg, #15803D, #16A34A 60%, #4ADE80); }
.rg-mid { background: linear-gradient(140deg, #B45309, #D97706 60%, #FBBF24); }
.rg-bad { background: linear-gradient(140deg, #991B1B, #DC2626 60%, #F87171); }
.review-item { border-radius: var(--r-lg); border: 1.5px solid var(--border-2); padding: var(--sp-4); background: var(--surface); }
.review-item.ok { border-inline-start: 5px solid var(--accent); }
.review-item.no { border-inline-start: 5px solid var(--danger); }
.explain { margin-top: 12px; padding: 13px 16px; border-radius: var(--r-md); background: var(--primary-050); font-size: .92rem; color: var(--primary-700); display: flex; gap: 10px; }
.explain .ic { flex: none; margin-top: 3px; }

/* ---------- books ---------- */
.bcard { display: flex; gap: var(--sp-4); padding: var(--sp-4); border-radius: var(--r-lg); background: var(--surface); border: 1px solid var(--border-2); box-shadow: var(--sh-1); transition: all var(--t-med); }
.bcard:hover { transform: translateY(-4px); box-shadow: var(--sh-2); border-color: var(--primary-100); }
.book { width: 96px; aspect-ratio: 3/4.2; border-radius: 4px 12px 12px 4px; flex: none; position: relative; overflow: hidden; display: flex; align-items: flex-end; padding: 10px; color: #fff; box-shadow: var(--sh-1), inset -3px 0 8px rgba(0,0,0,.15); }
.book::before { content: ''; position: absolute; inset-block: 0; inset-inline-start: 7px; width: 2px; background: rgba(255,255,255,.32); }
.book b { position: relative; font-family: var(--f-head); font-size: .78rem; line-height: 1.35; text-shadow: 0 1px 3px rgba(0,0,0,.35); }
.book--lg { width: 150px; }
.bcard__b { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 7px; }
.bcard__b h3 { font-size: 1.02rem; line-height: 1.5; }
.bcard__f { margin-top: auto; display: flex; align-items: center; gap: 10px; justify-content: space-between; flex-wrap: wrap; }

/* ---------- checkout ---------- */
.co-grid { display: grid; grid-template-columns: 1fr 400px; gap: var(--sp-5); align-items: start; }
.co-items { display: flex; flex-direction: column; }
.co-item { display: flex; gap: var(--sp-3); align-items: center; padding: var(--sp-4); border-bottom: 1px solid var(--border-2); }
.co-item:last-child { border-bottom: 0; }
.co-thumb { width: 62px; height: 62px; border-radius: var(--r-md); flex: none; display: grid; place-items: center; color: #fff; }
.pay-opt { display: flex; align-items: center; gap: 12px; padding: 14px 16px; border-radius: var(--r-md); border: 1.5px solid var(--border); background: var(--surface); cursor: pointer; transition: all var(--t-fast); }
.pay-opt:hover { border-color: var(--primary); }
.pay-opt.is-on { border-color: var(--primary); background: var(--primary-050); }
.pay-opt .radio { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--border); flex: none; display: grid; place-items: center; }
.pay-opt.is-on .radio { border-color: var(--primary); }
.pay-opt.is-on .radio::after { content: ''; width: 11px; height: 11px; border-radius: 50%; background: var(--primary); }
.pay-opt__t { flex: 1; }
.pay-opt__t b { display: block; font-family: var(--f-head); font-size: .96rem; }
.pay-opt__t span { font-size: .8rem; color: var(--fg-3); }
.sum-row { display: flex; justify-content: space-between; gap: 12px; font-size: .93rem; color: var(--fg-2); padding-block: 7px; }
.sum-row--total { font-family: var(--f-head); font-size: 1.2rem; font-weight: 800; color: var(--ink); border-top: 1.5px dashed var(--border); margin-top: 8px; padding-top: 14px; }
.sum-row--total b { color: var(--primary-700); }
.coupon { display: flex; gap: 8px; }
.coupon .input { text-transform: uppercase; }

/* ---------- receipt ---------- */
.receipt { width: min(520px, 100%); margin-inline: auto; background: var(--surface); border: 1px solid var(--border-2); border-radius: var(--r-xl); padding: clamp(1.25rem, 4vw, 2rem); box-shadow: var(--sh-2); }
.receipt__h { text-align: center; padding-bottom: var(--sp-4); border-bottom: 1.5px dashed var(--border); }
.receipt__ok { width: 66px; height: 66px; border-radius: 50%; margin: 0 auto var(--sp-3); display: grid; place-items: center; background: var(--accent-050); color: var(--accent-600); border: 2px solid #BBF7D0; }
.receipt__ok .ic { width: 34px; height: 34px; }
.barcode { margin-top: var(--sp-4); text-align: center; font-family: var(--f-mono); letter-spacing: 4px; font-size: 1.1rem; background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 5px, transparent 5px 9px); height: 46px; border-radius: var(--r-xs); opacity: .85; }
.barcode + .mono { display: block; text-align: center; margin-top: 8px; font-size: .82rem; color: var(--fg-3); letter-spacing: 2px; }

/* ---------- dashboard ---------- */
.dash-grid { display: grid; grid-template-columns: 1fr 336px; gap: var(--sp-5); align-items: start; }
.mini { display: flex; gap: 12px; align-items: center; padding: 12px; border-radius: var(--r-md); border: 1px solid var(--border-2); background: var(--surface); transition: all var(--t-fast); }
.mini:hover { border-color: var(--primary); transform: translateY(-2px); }
.mini__ic { width: 44px; height: 44px; border-radius: 12px; flex: none; display: grid; place-items: center; color: #fff; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .cd-grid { grid-template-columns: 1fr; }
  .cd-side { position: static; }
  .co-grid { grid-template-columns: 1fr; }
  .dash-grid { grid-template-columns: 1fr; }
  .exam-shell { grid-template-columns: 1fr; }
  .lp { grid-template-columns: 1fr; }
  .lp__side { position: static; max-height: none; }
}
@media (max-width: 720px) {
  .bcard { flex-direction: column; }
  .book { width: 100%; max-width: 150px; }
  .modal__f { justify-content: stretch; }
  .modal__f .btn { flex: 1; }
  .q-body { padding: var(--sp-4); }
}
@media (max-width: 480px) {
  .co-item { flex-wrap: wrap; }
  .lp__bar { justify-content: center; }
}

/* ---------- print ---------- */
@media print {
  #topbar, #footer, .to-top, .toast-wrap, .no-print { display: none !important; }
  #app { padding: 0 !important; }
  .receipt { box-shadow: none; border: 0; width: 100%; max-width: 340px; }
  .barcode { opacity: 1; }
}

/* ---------- print scope: receipt only ---------- */
@media print {
  body { background: #fff; }
  .topbar, .footer, .to-top, .toast-wrap { display: none !important; }
  #app > section:not(:has(.print-area)) { display: none !important; }
  #app .print-area { padding: 0 !important; max-width: 100% !important; }
  .no-print { display: none !important; }
}