/* ============================================================
   BELAJAR-V2.CSS — Revisi halaman Belajar (gaya classroom)
   Dipakai oleh: belajar.html (katalog) & belajar-detail.html (kelas)
   Mobile-first; breakpoint 680px & 1024px mengikuti desktop.css
   ============================================================ */

/* ===== HERO RINGKAS ===== */
.kl-hero { background:var(--tosca); color:var(--white); padding:2rem var(--pad) 2.25rem; }
.kl-hero-title {
  font-family:'Arial Black',Arial,sans-serif;
  font-size:2.2rem; font-weight:900; line-height:1.05;
  text-transform:uppercase; margin:.35rem 0 .5rem;
}
.kl-hero-sub { font-size:.9rem; opacity:.92; max-width:34rem; }

/* ===== LAYOUT KATALOG: SIDEBAR + LIST ===== */
.kl-body { padding:2rem var(--pad) 2.5rem; }
.kl-layout { max-width:var(--max); margin:0 auto; }

.kl-side-title {
  font-family:'Arial Black',Arial,sans-serif;
  font-size:.95rem; font-weight:900; text-transform:uppercase;
  line-height:1.3; margin-bottom:.75rem;
}
.kl-cats { display:flex; flex-wrap:wrap; gap:.5rem; margin-bottom:1.75rem; }
.kl-cat {
  display:inline-block; padding:.45rem 1rem;
  border:1.5px solid var(--tosca); border-radius:999px;
  color:var(--tosca); font-size:.8rem; font-weight:700;
  cursor:pointer; background:transparent; transition:background .15s,color .15s;
}
.kl-cat.is-active, .kl-cat:hover { background:var(--tosca); color:var(--white); }

/* Kartu kelas */
.kl-list { display:flex; flex-direction:column; gap:1.25rem; }
.kl-card {
  background:var(--white); border-radius:12px; overflow:hidden;
  box-shadow:0 2px 10px rgba(0,0,0,.06); cursor:pointer;
  transition:transform .15s, box-shadow .15s;
}
.kl-card:hover { transform:translateY(-2px); box-shadow:0 6px 18px rgba(0,0,0,.1); }
.kl-card-cover { position:relative; }
.kl-card-cover img { width:100%; aspect-ratio:16/10; object-fit:cover; }
.kl-card-badge {
  position:absolute; top:.6rem; left:.6rem;
  background:rgba(0,0,0,.65); color:var(--white);
  font-size:.68rem; font-weight:700; padding:.25rem .6rem; border-radius:999px;
}
.kl-card-body { padding:1rem 1.1rem 1.2rem; }
.kl-card-title {
  font-family:'Arial Black',Arial,sans-serif;
  font-size:1.05rem; font-weight:900; text-transform:uppercase;
  line-height:1.25; margin-bottom:.4rem;
}
.kl-card-desc { font-size:.83rem; color:var(--gray); line-height:1.6; }

/* ===== TESTIMONI ===== */
.kl-voices { background:var(--tosca); color:var(--white); padding:2.5rem var(--pad); }
.kl-voices-eyebrow { color:rgba(255,255,255,.75); margin-bottom:.4rem; }
.kl-voices-title {
  font-family:'Arial Black',Arial,sans-serif;
  font-size:1.8rem; font-weight:900; line-height:1.1;
  text-transform:uppercase; margin-bottom:1.75rem;
}
.kl-voice { margin-bottom:1.5rem; }
.kl-voice:last-child { margin-bottom:0; }
.kl-voice-head { display:flex; align-items:center; gap:.6rem; margin-bottom:.5rem; }
.kl-voice-avatar {
  width:36px; height:36px; border-radius:50%;
  background:var(--orange); color:var(--black);
  display:flex; align-items:center; justify-content:center;
  font-weight:900; font-size:.85rem; flex-shrink:0;
}
.kl-voice-name { font-weight:700; font-size:.9rem; }
.kl-voice-text { font-size:.85rem; line-height:1.7; opacity:.92; }

/* ===== FAQ ===== */
.kl-faq { padding:2.5rem var(--pad); }
.kl-faq-inner { max-width:var(--max); margin:0 auto; }
.kl-faq-title {
  font-family:'Arial Black',Arial,sans-serif;
  font-size:1.8rem; font-weight:900; text-transform:uppercase;
  margin-bottom:1.25rem;
}
.kl-faq details {
  background:var(--white); border-radius:10px;
  margin-bottom:.75rem; overflow:hidden;
  border:1px solid var(--border);
}
.kl-faq summary {
  list-style:none; cursor:pointer;
  display:flex; justify-content:space-between; align-items:center; gap:1rem;
  padding:1rem 1.1rem;
  font-weight:700; font-size:.9rem; line-height:1.5;
}
.kl-faq summary::-webkit-details-marker { display:none; }
.kl-faq summary::after {
  content:'\25BE'; color:var(--tosca); font-size:1rem;
  transition:transform .2s; flex-shrink:0;
}
.kl-faq details[open] summary::after { transform:rotate(180deg); }
.kl-faq-a { padding:0 1.1rem 1.1rem; font-size:.85rem; color:var(--gray); line-height:1.7; }
.kl-faq-a p { margin-bottom:.75rem; }
.kl-faq-a p:last-child { margin-bottom:0; }

/* Banner promo: Untuk Anak-anak */
.kl-kids-promo {
  background:var(--tosca); color:#fff; border-radius:18px;
  padding:2rem 1.5rem; margin:0 var(--pad) 2.5rem; text-align:center;
}
.kl-kids-promo-eyebrow { font-size:.7rem; font-weight:700; letter-spacing:.1em; text-transform:uppercase; opacity:.85; margin-bottom:.5rem; }
.kl-kids-promo-title { font-family:'Arial Black',Arial,sans-serif; font-weight:900; font-size:1.4rem; margin-bottom:.6rem; }
.kl-kids-promo-desc { font-size:.88rem; line-height:1.6; opacity:.95; max-width:34rem; margin:0 auto 1.25rem; }
@media (min-width:900px){
  .kl-kids-promo { max-width:1180px; margin-left:auto; margin-right:auto; padding:2.5rem 3rem; }
}

/* Baris patron */
.kl-patron {
  text-align:center; padding:2rem var(--pad);
  background:var(--offwhite);
  font-size:.85rem; color:var(--gray);
}
.kl-patron a { color:var(--tosca); font-weight:700; }

/* ============================================================
   HALAMAN DETAIL KELAS
   ============================================================ */
.kd-body { padding:1.5rem var(--pad) 2.5rem; }
.kd-crumb { font-size:.75rem; color:var(--gray); margin-bottom:1rem; }
.kd-crumb a { color:var(--tosca); }

/* Player video */
.kd-player {
  background:#111; border-radius:12px; overflow:hidden;
  aspect-ratio:16/9; position:relative; margin-bottom:1rem;
  display:flex; align-items:center; justify-content:center;
}
.kd-player img { width:100%; height:100%; object-fit:cover; opacity:.85; }
.kd-play {
  position:absolute; width:64px; height:64px; border-radius:50%;
  background:var(--orange); border:none; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  font-size:1.4rem; color:var(--black);
}
.kd-now { font-size:.8rem; color:var(--gray); margin-bottom:1.25rem; }
.kd-now b { color:var(--black); }

/* Tabs */
.kd-tabs { display:flex; gap:.25rem; border-bottom:2px solid var(--border); margin-bottom:1.25rem; overflow-x:auto; }
.kd-tab {
  background:none; border:none; cursor:pointer;
  font-family:Arial,sans-serif; font-weight:700; font-size:.85rem;
  padding:.65rem 1rem; color:var(--gray);
  border-bottom:3px solid transparent; margin-bottom:-2px; white-space:nowrap;
}
.kd-tab.is-active { color:var(--tosca); border-bottom-color:var(--tosca); }
.kd-panel { display:none; font-size:.875rem; line-height:1.75; }
.kd-panel.is-active { display:block; }
.kd-panel p { margin-bottom:.85rem; }

/* Teacher notes */
.kd-notes {
  background:var(--white); border:1px solid var(--border);
  border-radius:12px; padding:1.25rem; margin-top:1.5rem;
}
.kd-notes-lbl { font-size:.68rem; letter-spacing:.12em; text-transform:uppercase; color:var(--tosca); font-weight:700; margin-bottom:.3rem; }
.kd-notes-title { font-family:'Arial Black',Arial,sans-serif; font-size:1.05rem; font-weight:900; margin-bottom:1rem; }
.kd-notes h4 { font-size:.9rem; margin:1rem 0 .4rem; }
.kd-notes p, .kd-notes li { font-size:.83rem; color:var(--gray); line-height:1.7; }
.kd-notes ul { padding-left:1.1rem; list-style:disc; display:flex; flex-direction:column; gap:.4rem; }

/* Pengajar */
.kd-teacher {
  display:flex; gap:1rem; align-items:center;
  background:var(--white); border:1px solid var(--border);
  border-radius:12px; padding:1.1rem; margin-top:1.5rem;
}
.kd-teacher-photo {
  width:64px; height:64px; border-radius:50%;
  background:var(--tosca); color:var(--white); flex-shrink:0;
  display:flex; align-items:center; justify-content:center;
  font-family:'Arial Black',Arial,sans-serif; font-weight:900; font-size:1.2rem;
}
.kd-teacher-lbl { font-size:.68rem; letter-spacing:.12em; text-transform:uppercase; color:var(--gray); }
.kd-teacher-name { font-family:'Arial Black',Arial,sans-serif; font-weight:900; font-size:1rem; margin:.15rem 0 .25rem; }
.kd-teacher-bio { font-size:.8rem; color:var(--gray); line-height:1.6; }

/* Daftar sesi */
.kd-parts { margin-top:2rem; }
.kd-parts-title { font-family:'Arial Black',Arial,sans-serif; font-size:1.3rem; font-weight:900; text-transform:uppercase; margin-bottom:1rem; }
.kd-part {
  display:flex; align-items:center; gap:1rem;
  background:var(--white); border:1px solid var(--border);
  border-radius:10px; padding:.85rem 1rem; margin-bottom:.6rem;
  cursor:pointer; transition:border-color .15s;
}
.kd-part:hover, .kd-part.is-current { border-color:var(--tosca); }
.kd-part-num {
  width:34px; height:34px; border-radius:50%; flex-shrink:0;
  background:var(--offwhite); color:var(--tosca);
  display:flex; align-items:center; justify-content:center;
  font-family:'Arial Black',Arial,sans-serif; font-weight:900; font-size:.9rem;
}
.kd-part.is-current .kd-part-num { background:var(--tosca); color:var(--white); }
.kd-part-name { font-weight:700; font-size:.88rem; line-height:1.4; }
.kd-part-dur { margin-left:auto; font-size:.75rem; color:var(--gray); white-space:nowrap; }

/* ============================================================
   TABLET (≥680px)
   ============================================================ */
@media (min-width:680px) {
  .kl-layout, .kl-faq-inner { max-width:640px; }
  .kl-voices-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:1.5rem; }
  .kl-voice { margin-bottom:0; }
}

/* ============================================================
   DESKTOP (≥1024px)
   ============================================================ */
@media (min-width:1024px) {
  .kl-hero { padding:3rem 40px; }
  .kl-hero-inner { max-width:1180px; margin:0 auto; }
  .kl-hero-title { font-size:3rem; }

  .kl-body { padding:3rem 40px; }
  .kl-layout {
    max-width:1180px;
    display:grid; grid-template-columns:230px 1fr; gap:3rem;
    align-items:start;
  }
  .kl-side { position:sticky; top:90px; }
  .kl-cats { flex-direction:column; align-items:flex-start; margin-bottom:0; }
  .kl-cat { width:100%; text-align:left; }

  .kl-card { display:grid; grid-template-columns:300px 1fr; }
  .kl-card-cover img { height:100%; aspect-ratio:auto; min-height:180px; }
  .kl-card-body { padding:1.5rem 1.75rem; display:flex; flex-direction:column; justify-content:center; }
  .kl-card-title { font-size:1.25rem; }
  .kl-card-desc { font-size:.9rem; }

  .kl-voices { padding:4rem 40px; }
  .kl-voices-inner { max-width:1180px; margin:0 auto; }
  .kl-faq { padding:4rem 40px; }
  .kl-faq-inner { max-width:900px; }
  .kl-faq-title { font-size:2.2rem; }

  .kd-body { padding:2rem 40px 4rem; }
  .kd-inner { max-width:1180px; margin:0 auto; }
  .kd-grid { display:grid; grid-template-columns:1fr 340px; gap:2.5rem; align-items:start; }
  .kd-sidebar { position:sticky; top:90px; }
  .kd-parts { margin-top:0; }
}

/* ============================================================
   PLAYER VIEW — belajar-detail.html (revisi sesuai mockup player)
   ============================================================ */
.kv-page { min-height:100vh; display:flex; flex-direction:column; background:var(--white); }

/* Top bar */
.kv-bar {
  display:flex; align-items:center; gap:.75rem;
  padding:.6rem var(--pad);
  background:var(--white); border-bottom:1px solid var(--border);
  position:sticky; top:0; z-index:50; flex-wrap:wrap;
}
.kv-logo { height:34px; }
.kv-back {
  width:36px; height:36px; border-radius:50%;
  border:2px solid var(--tosca); background:transparent; color:var(--tosca);
  font-size:1rem; font-weight:700; cursor:pointer;
  display:flex; align-items:center; justify-content:center; flex-shrink:0;
}
.kv-session {
  position:relative;
}
.kv-session-pill {
  border:2px solid var(--tosca); border-radius:10px;
  background:transparent; cursor:pointer;
  padding:.3rem .9rem; text-align:left;
  font-family:Arial,sans-serif;
}
.kv-session-pill small { display:block; font-size:.62rem; color:var(--tosca); font-weight:700; }
.kv-session-pill b { font-size:.8rem; color:var(--tosca); }
.kv-session-menu {
  display:none; position:absolute; top:calc(100% + 6px); left:0; z-index:60;
  background:var(--white); border:1px solid var(--border); border-radius:10px;
  box-shadow:0 8px 24px rgba(0,0,0,.14); min-width:260px; overflow:hidden;
}
.kv-session.open .kv-session-menu { display:block; }
.kv-session-menu button {
  display:flex; justify-content:space-between; gap:1rem; width:100%;
  background:none; border:none; cursor:pointer; text-align:left;
  padding:.65rem .9rem; font-size:.8rem; font-family:Arial,sans-serif;
}
.kv-session-menu button:hover { background:var(--offwhite); }
.kv-session-menu button.is-current { color:var(--tosca); font-weight:700; }
.kv-session-menu button span:last-child { color:var(--gray); font-size:.72rem; white-space:nowrap; }

/* Tabs kanan */
.kv-tabs {
  display:flex; align-items:center; gap:.15rem;
  background:var(--offwhite); border-radius:8px; padding:.2rem;
  margin-left:auto; overflow-x:auto; max-width:100%;
}
.kv-tab {
  border:none; background:none; cursor:pointer;
  font-family:Arial,sans-serif; font-weight:700; font-size:.78rem;
  color:var(--gray); padding:.45rem .8rem; border-radius:6px; white-space:nowrap;
}
.kv-tab.is-active { background:var(--white); color:var(--tosca); box-shadow:0 1px 3px rgba(0,0,0,.12); }
.kv-avatar {
  width:36px; height:36px; border-radius:50%; flex-shrink:0;
  border:2px solid var(--tosca); color:var(--tosca);
  display:flex; align-items:center; justify-content:center;
  background:transparent; font-size:1rem;
}

/* Stage: video + panel */
.kv-stage { flex:1; display:flex; flex-direction:column; }
.kv-video { position:relative; background:#111; }
.kv-video img { width:100%; aspect-ratio:16/9; object-fit:cover; display:block; }
.kv-play {
  position:absolute; top:50%; left:50%; transform:translate(-50%,-50%);
  width:64px; height:64px; border-radius:50%;
  background:var(--orange); border:none; cursor:pointer;
  font-size:1.4rem; color:var(--black);
  display:flex; align-items:center; justify-content:center;
}
.kv-panel {
  position:relative; background:var(--white);
  border-top:1px solid var(--border);
  padding:1.25rem var(--pad) 2rem;
  overflow-y:auto;
}
.kv-panel-close {
  position:absolute; top:.9rem; right:.9rem;
  width:28px; height:28px; border-radius:50%;
  border:2px solid var(--tosca); color:var(--tosca); background:none;
  cursor:pointer; font-size:.8rem; font-weight:700; line-height:1;
}
.kv-pane { display:none; }
.kv-pane.is-active { display:block; }
.kv-pane-h { font-family:'Arial Black',Arial,sans-serif; font-size:1.15rem; font-weight:900; letter-spacing:.04em; margin-bottom:.25rem; }
.kv-pane-sub { font-size:.85rem; margin-bottom:1.1rem; }
.kv-pane h4 { font-size:.9rem; margin:1.1rem 0 .45rem; }
.kv-pane p, .kv-pane li { font-size:.85rem; line-height:1.75; color:#333; margin-bottom:.85rem; }
.kv-pane ul { padding-left:1.1rem; list-style:disc; }
.kv-pane li { margin-bottom:.5rem; }
.kv-hidden { display:none !important; }

/* Desktop: video kiri + panel kanan sejajar (di dalam frame) */
@media (min-width:1024px) {
  .kv-bar { padding:.6rem 1.25rem; flex-wrap:nowrap; gap:1rem; }
  .kv-stage { flex-direction:row; align-items:stretch; }
  .kv-video { flex:1.8; }
  .kv-video img { width:100%; height:100%; aspect-ratio:auto; object-fit:cover; }
  .kv-panel {
    flex:1; max-width:400px; border-top:none; border-left:1px solid var(--border);
    padding:1.5rem 1.5rem 2rem; max-height:560px; overflow-y:auto;
  }
  .kv-stage.panel-closed .kv-panel { display:none; }
  .kv-stage.panel-closed .kv-video { flex:1; }
  .kv-stage.panel-closed .kv-video img { aspect-ratio:16/9; height:auto; }
}

/* Frame pembungkus player di dalam halaman kelas */
.kv-band { background:var(--tosca); padding:2rem var(--pad) 2.5rem; }
.kv-frame {
  background:var(--white); border-radius:14px; overflow:hidden;
  box-shadow:0 8px 28px rgba(0,0,0,.16);
}
.kv-frame .kv-bar { position:static; }
@media (min-width:1024px) {
  .kv-band { padding:3rem 40px 3.5rem; }
  .kv-frame { max-width:1180px; margin:0 auto; }
}

/* ============================================================
   HALAMAN KELAS (overview) — belajar-detail.html
   ============================================================ */
.ko-hero { background:var(--tosca); padding:2rem var(--pad) 2.5rem; }
.ko-hero-inner { display:flex; flex-direction:column; border-radius:14px; overflow:hidden; box-shadow:0 8px 28px rgba(0,0,0,.16); }
.ko-hero-card { background:var(--white); padding:1.5rem 1.4rem; }
.ko-hero-title {
  font-family:'Arial Black',Arial,sans-serif;
  font-size:1.6rem; font-weight:900; line-height:1.15;
  text-transform:uppercase; color:var(--tosca); margin-bottom:.35rem;
}
.ko-hero-teacher { font-size:.8rem; font-weight:700; margin-bottom:.75rem; }
.ko-hero-desc { font-size:.82rem; color:var(--gray); line-height:1.65; margin-bottom:.85rem; }
.ko-hero-meta { display:flex; gap:1.25rem; font-size:.78rem; font-weight:700; color:var(--tosca); margin-bottom:1.1rem; }
.ko-hero-btns { display:flex; flex-direction:column; align-items:flex-start; gap:.8rem; }
.ko-start {
  background:var(--tosca); color:var(--white); border:none; border-radius:999px;
  padding:.65rem 1.4rem; font-weight:700; font-size:.85rem; cursor:pointer;
  display:inline-flex; align-items:center; gap:.5rem;
}
.ko-start:hover { background:var(--tosca-dk); }
.ko-share { background:none; border:none; cursor:pointer; color:var(--tosca); font-size:.78rem; font-weight:700; padding:0; }
.ko-hero-img { flex:1; min-width:0; }
.ko-hero-img img { width:100%; height:100%; object-fit:cover; object-position:center; min-height:200px; }

/* Daftar sesi dengan sidebar */
.ko-item { display:flex; gap:1rem; padding-bottom:1.25rem; margin-bottom:1.25rem; border-bottom:1px solid var(--tosca); cursor:pointer; }
.ko-item:last-child { border-bottom:none; margin-bottom:0; }
.ko-item-thumb { width:130px; flex-shrink:0; border-radius:8px; overflow:hidden; }
.ko-item-thumb img { width:100%; aspect-ratio:3/2; object-fit:cover; }
.ko-item-meta { font-size:.72rem; font-weight:700; color:var(--tosca); margin-bottom:.25rem; }
.ko-item-title {
  font-family:'Arial Black',Arial,sans-serif;
  font-size:.95rem; font-weight:900; text-transform:uppercase;
  line-height:1.25; margin-bottom:.35rem;
}
.ko-item-title:hover { color:var(--tosca); }
.ko-item-desc { font-size:.8rem; color:var(--gray); line-height:1.6; }

/* Testimoni kartu putih berfoto (dipakai katalog & halaman kelas) */
.kl-voice { background:var(--white); border-radius:12px; padding:1.2rem; color:var(--black); }
.kl-voice-photo { width:40px; height:40px; border-radius:50%; object-fit:cover; flex-shrink:0; }
.kl-voice-name { font-weight:700; font-size:.88rem; color:var(--tosca); }
.kl-voice-meta { font-size:.68rem; color:var(--gray); }
.kl-voice-text { color:var(--black); opacity:1; }

@media (min-width:680px) {
  .ko-hero-inner { flex-direction:row; }
  .ko-hero-card { width:44%; flex-shrink:0; }
}

@media (min-width:1024px) {
  .ko-hero { padding:3rem 40px 3.5rem; }
  .ko-hero-inner { max-width:1180px; margin:0 auto; }
  .ko-hero-card { width:38%; padding:2rem 1.9rem; }
  .ko-hero-title { font-size:1.9rem; }
  .ko-item-thumb { width:170px; }
  .ko-item-title { font-size:1.05rem; }
}