@import url("https://fonts.googleapis.com/css2?family=Figtree:wght@400;500;600;700;800&family=Shantell+Sans:wght@600;700;800&display=swap");

:root {
  --biru: #1f4fe0; --biru-tua: #12309a; --biru-muda: #e7f1ff; --biru-garis: #cfe0ff; --langit: #5aa9ff;
  --tinta: #13235c; --abu: #566491; --abu-muda: #f5f8ff; --putih: #fff; --kuning: #ffd43b; --merah: #e5484d; --hijau: #18a058;
  --huruf: "Shantell Sans", "Figtree", system-ui, sans-serif;
  --isi: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius: 18px;
  --bayang: 0 1px 2px rgba(19, 35, 92, .06), 0 8px 24px rgba(19, 35, 92, .07);
  --bayang-angkat: 0 2px 4px rgba(19, 35, 92, .06), 0 16px 40px rgba(31, 79, 224, .14);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: var(--isi); color: var(--tinta); background: var(--abu-muda);
  font-size: 16px; line-height: 1.6; -webkit-font-smoothing: antialiased;
}
a { color: var(--biru); text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; color: inherit; }
[hidden] { display: none !important; }

.wrap { width: min(1120px, 100% - 40px); margin-inline: auto; }

/* ---------- Navbar ---------- */
.nav {
  position: sticky; top: 0; z-index: 20; background: rgba(255, 255, 255, .85);
  backdrop-filter: saturate(160%) blur(12px); border-bottom: 1px solid var(--biru-garis);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; color: var(--tinta); letter-spacing: -.01em; }
.brand img { width: 38px; height: 38px; }
.brand span b { color: var(--biru); }
.nav-right { display: flex; align-items: center; gap: 10px; min-width: 0; }
.chip {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 12px; border-radius: 999px;
  background: var(--biru-muda); color: var(--biru-tua); font-size: 14px; font-weight: 600;
  max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* ---------- Tombol & form ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 22px;
  border-radius: 12px; border: 1px solid transparent; font-weight: 700; font-size: 16px; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
  background: var(--biru); color: #fff; box-shadow: 0 6px 16px rgba(31, 79, 224, .25);
}
.btn:hover { background: var(--biru-tua); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .6; cursor: wait; transform: none; }
.btn-lg { padding: 15px 28px; font-size: 17px; border-radius: 14px; }
.btn-ghost { background: #fff; color: var(--tinta); border-color: var(--biru-garis); box-shadow: none; }
.btn-ghost:hover { background: var(--biru-muda); }
.btn-sm { padding: 8px 14px; font-size: 14px; border-radius: 10px; }
.btn-danger { background: #fff; color: var(--merah); border-color: #f5c9cb; box-shadow: none; }
.btn-danger:hover { background: #fff1f1; }
.btn-block { width: 100%; }

.field { display: grid; gap: 6px; margin-bottom: 16px; }
.field label { font-size: 14px; font-weight: 700; }
.input {
  width: 100%; padding: 13px 15px; border-radius: 12px; border: 1.5px solid var(--biru-garis); background: #fff;
  transition: border-color .15s, box-shadow .15s; outline: none;
}
.input:focus { border-color: var(--biru); box-shadow: 0 0 0 4px rgba(31, 79, 224, .12); }
textarea.input { min-height: 90px; resize: vertical; }
.hint { font-size: 13px; color: var(--abu); }
.alert { padding: 12px 14px; border-radius: 12px; font-size: 14px; font-weight: 600; margin-bottom: 16px; }
.alert-error { background: #fff1f1; color: #b4232a; border: 1px solid #f5c9cb; }
.alert-ok { background: #e9f8ef; color: #136c3c; border: 1px solid #bfe8cf; }

/* ---------- Login ---------- */
.auth {
  min-height: 100vh; display: grid; place-items: center; padding: 32px 20px;
  background:
    radial-gradient(600px 400px at 10% 0%, rgba(90, 169, 255, .22), transparent 70%),
    radial-gradient(500px 360px at 100% 100%, rgba(255, 212, 59, .22), transparent 70%),
    var(--abu-muda);
}
.auth-card {
  width: min(440px, 100%); background: #fff; border-radius: 24px; padding: 36px 32px 30px;
  box-shadow: var(--bayang-angkat); border: 1px solid var(--biru-garis);
}
.auth-card .maskot { width: 84px; height: 84px; margin: -78px auto 10px; filter: drop-shadow(0 10px 18px rgba(31, 79, 224, .25)); }
.auth-card .brand { justify-content: center; margin-bottom: 18px; }
.auth h1 { font-family: var(--huruf); font-size: 28px; line-height: 1.2; text-align: center; margin: 0 0 6px; }
.auth .sub { text-align: center; color: var(--abu); margin: 0 0 24px; font-size: 15px; }
.auth-foot { text-align: center; font-size: 13px; color: var(--abu); margin-top: 18px; }

/* ---------- Hero beranda ---------- */
.hero { padding: 48px 0 28px; }
.hero-card {
  position: relative; overflow: hidden; display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center;
  padding: 40px; border-radius: 28px; color: #fff;
  background: linear-gradient(135deg, var(--biru) 0%, #2f6bff 55%, var(--langit) 100%);
  box-shadow: var(--bayang-angkat);
}
.hero-card::after {
  content: ""; position: absolute; width: 380px; height: 380px; right: -120px; top: -160px; border-radius: 50%;
  background: rgba(255, 255, 255, .12);
}
.hero-card > * { position: relative; z-index: 1; }
.badge {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; font-size: 13px; font-weight: 700;
  background: rgba(255, 255, 255, .18); color: #fff; margin-bottom: 14px;
}
.badge-kuning { background: var(--kuning); color: var(--tinta); }
.hero h1 { font-family: var(--huruf); font-size: clamp(28px, 4.2vw, 44px); line-height: 1.15; margin: 0 0 10px; letter-spacing: -.01em; }
.hero p { margin: 0 0 22px; font-size: 17px; opacity: .92; max-width: 560px; }
.hero .maskot-hero { width: 190px; height: 190px; filter: drop-shadow(0 18px 30px rgba(0, 0, 0, .18)); animation: ngambang 5s ease-in-out infinite; }
@keyframes ngambang { 50% { transform: translateY(-10px) rotate(-3deg); } }
.hero .btn { background: #fff; color: var(--biru); box-shadow: 0 8px 20px rgba(0, 0, 0, .12); }
.hero .btn:hover { background: var(--kuning); color: var(--tinta); }

.progress-row { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; max-width: 460px; }
.progress { flex: 1; height: 10px; border-radius: 999px; background: rgba(255, 255, 255, .25); overflow: hidden; }
.progress > i { display: block; height: 100%; width: 0; border-radius: inherit; background: var(--kuning); transition: width .6s ease; }
.progress-row span { font-size: 14px; font-weight: 700; white-space: nowrap; }

/* ---------- Daftar materi ---------- */
.section { padding: 12px 0 64px; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section-head h2 { font-size: 24px; margin: 0; letter-spacing: -.01em; }
.section-head p { margin: 0; color: var(--abu); font-size: 15px; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.tab {
  padding: 9px 16px; border-radius: 999px; border: 1.5px solid var(--biru-garis); background: #fff; font-weight: 700; font-size: 14px; cursor: pointer;
}
.tab.aktif { background: var(--tinta); color: #fff; border-color: var(--tinta); }

.lesson-list { display: grid; gap: 12px; }
.module-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin: 30px 0 12px; }
.module-head:first-of-type { margin-top: 6px; }
.module-head h3 { margin: 0; font-size: 19px; letter-spacing: -.01em; }
.module-head span { color: var(--abu); font-size: 14px; font-weight: 600; white-space: nowrap; }
.lesson {
  display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; padding: 16px 20px;
  background: #fff; border-radius: var(--radius); border: 1px solid var(--biru-garis); color: var(--tinta);
  box-shadow: var(--bayang); transition: transform .15s ease, box-shadow .15s ease, border-color .15s;
}
.lesson:hover { transform: translateY(-2px); box-shadow: var(--bayang-angkat); border-color: var(--langit); }
.lesson .no {
  width: 44px; height: 44px; border-radius: 14px; display: grid; place-items: center; font-weight: 800;
  background: var(--biru-muda); color: var(--biru);
}
.lesson.selesai .no { background: var(--kuning); color: var(--tinta); }
.lesson h3 { margin: 0; font-size: 17px; line-height: 1.35; }
.lesson p { margin: 2px 0 0; color: var(--abu); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.lesson .meta { display: flex; align-items: center; gap: 10px; color: var(--abu); font-size: 14px; font-weight: 600; white-space: nowrap; }
.play {
  width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center; background: var(--biru); color: #fff;
}
.play svg { width: 14px; height: 14px; margin-left: 2px; }
.lesson.selesai .play { background: var(--hijau); }
.lesson.selesai .play svg { margin-left: 0; }

.empty {
  text-align: center; padding: 48px 24px; background: #fff; border-radius: var(--radius); border: 1.5px dashed var(--biru-garis); color: var(--abu);
}
.empty img { width: 90px; margin: 0 auto 12px; opacity: .9; }

/* ---------- Halaman materi ---------- */
.player-layout { display: grid; grid-template-columns: minmax(0, 1fr) 340px; gap: 28px; padding: 28px 0 64px; align-items: start; }
.back { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: 14px; margin-bottom: 14px; }
.video {
  position: relative; aspect-ratio: 16 / 9; border-radius: 20px; overflow: hidden; background: #0b1440; box-shadow: var(--bayang-angkat);
}
.video iframe, .video video { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.video video { background: #000; object-fit: contain; }
.lesson-info { margin-top: 22px; }
.lesson-info .kecil { color: var(--biru); font-weight: 700; font-size: 14px; }
.lesson-info h1 { font-size: clamp(22px, 3vw, 30px); line-height: 1.25; margin: 4px 0 10px; letter-spacing: -.01em; }
.lesson-info .desc { color: var(--abu); white-space: pre-line; margin: 0; }
.lesson-actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: space-between; align-items: center; margin-top: 22px; padding-top: 20px; border-top: 1px solid var(--biru-garis); }
.lesson-actions .kanan { display: flex; gap: 10px; flex-wrap: wrap; }
.btn-selesai.sudah { background: var(--hijau); box-shadow: 0 6px 16px rgba(24, 160, 88, .25); }

.sidebar {
  position: sticky; top: 88px; background: #fff; border-radius: var(--radius); border: 1px solid var(--biru-garis); box-shadow: var(--bayang);
  overflow: hidden;
}
.sidebar-head { padding: 16px 18px; border-bottom: 1px solid var(--biru-garis); }
.sidebar-head b { display: block; font-size: 15px; line-height: 1.35; }
.sidebar-head small { color: var(--abu); font-weight: 600; }
.sidebar-head .progress { background: var(--biru-muda); margin-top: 10px; height: 8px; }
.side-list { max-height: calc(100vh - 220px); overflow: auto; padding: 8px; }
.side-module { padding: 14px 10px 6px; font-size: 12px; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; color: var(--biru); }
.side-module:first-child { padding-top: 6px; }
.side-item { display: grid; grid-template-columns: 28px 1fr; gap: 10px; padding: 10px; border-radius: 12px; color: var(--tinta); font-size: 14px; line-height: 1.4; }
.side-item:hover { background: var(--abu-muda); }
.side-item.aktif { background: var(--biru-muda); font-weight: 700; }
.side-item .no { width: 28px; height: 28px; border-radius: 9px; display: grid; place-items: center; font-size: 12px; font-weight: 800; background: var(--abu-muda); color: var(--abu); }
.side-item.aktif .no { background: var(--biru); color: #fff; }
.side-item.selesai .no { background: var(--kuning); color: var(--tinta); }
.side-item small { display: block; color: var(--abu); font-weight: 500; }

.footer { text-align: center; color: var(--abu); font-size: 13px; padding: 0 20px 36px; }
.footer a { font-weight: 700; }

/* ---------- Perjanjian ---------- */
.agree { padding: 40px 0 56px; }
.agree-card {
  width: min(760px, 100%); margin-inline: auto; background: #fff; border-radius: 24px; border: 1px solid var(--biru-garis);
  box-shadow: var(--bayang-angkat); overflow: hidden;
}
.agree-head { padding: 30px 32px 22px; border-bottom: 1px solid var(--biru-garis); display: grid; grid-template-columns: auto 1fr; gap: 18px; align-items: center; }
.agree-icon { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; background: var(--biru-muda); color: var(--biru); }
.agree-icon svg { width: 30px; height: 30px; }
.agree-head .badge { margin-bottom: 6px; }
.agree-head h1 { font-family: var(--huruf); font-size: clamp(22px, 3.4vw, 30px); line-height: 1.2; margin: 0 0 4px; }
.agree-head p { margin: 0; color: var(--abu); font-size: 15px; }
.agree-body { max-height: 52vh; overflow: auto; padding: 8px 32px 20px; background: linear-gradient(#fff, #fff) padding-box; }
.agree-body h3 { font-size: 16px; margin: 20px 0 6px; color: var(--tinta); }
.agree-body p, .agree-body li { color: #33406b; font-size: 15px; margin: 0 0 8px; }
.agree-body ul { padding-left: 20px; margin: 0 0 8px; }
.agree-body li::marker { color: var(--merah); }
.agree-foot { padding: 20px 32px 26px; border-top: 1px solid var(--biru-garis); background: var(--abu-muda); }
.agree-check { display: grid; grid-template-columns: 22px 1fr; gap: 12px; align-items: start; font-weight: 600; font-size: 15px; cursor: pointer; margin-bottom: 16px; }
.agree-check input { width: 20px; height: 20px; margin-top: 2px; accent-color: var(--biru); }
.agree-check.terkunci { opacity: .5; cursor: not-allowed; }
.agree-done { display: flex; align-items: center; gap: 10px; color: #136c3c; font-weight: 700; margin-bottom: 14px; }
.agree-done svg { width: 22px; height: 22px; }
@media (max-width: 640px) {
  .agree { padding: 16px 0 40px; }
  .agree-head { grid-template-columns: 1fr; padding: 24px 20px 18px; gap: 12px; }
  .agree-body { padding: 4px 20px 16px; max-height: 55vh; }
  .agree-foot { padding: 18px 20px 22px; }
}

.loading { display: grid; place-items: center; min-height: 50vh; color: var(--abu); }
.spinner { width: 34px; height: 34px; border-radius: 50%; border: 3px solid var(--biru-garis); border-top-color: var(--biru); animation: putar .8s linear infinite; }
@keyframes putar { to { transform: rotate(360deg); } }

@media (max-width: 900px) {
  .player-layout { grid-template-columns: 1fr; padding-top: 16px; }
  .sidebar { position: static; }
  .side-list { max-height: none; }
}
@media (max-width: 640px) {
  .wrap { width: min(1120px, 100% - 28px); }
  .nav .wrap { height: 60px; }
  .brand { font-size: 18px; }
  .brand img { width: 32px; height: 32px; }
  .chip { display: none; }
  .hero { padding: 20px 0 16px; }
  .hero-card { grid-template-columns: 1fr; padding: 28px 22px; border-radius: 22px; }
  .hero .maskot-hero { position: absolute; width: 96px; height: 96px; right: 14px; top: 14px; opacity: .95; }
  .hero h1 { padding-right: 84px; }
  .hero .btn { width: 100%; }
  .lesson { grid-template-columns: auto 1fr; padding: 14px; gap: 12px; }
  .lesson .meta { grid-column: 2; }
  .lesson .play { display: none; }
  .video { border-radius: 14px; margin-inline: -4px; }
  .lesson-actions .btn { flex: 1; }
  .lesson-actions .kanan { width: 100%; }
  .auth-card { padding: 32px 22px 24px; }
}
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }