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

:root {
  --bg: #f6efe4;
  --surface: #fffaf3;
  --ink: #3a2416;
  --muted: #7a5c48;
  --line: #ead9c6;
  --primary: #6f3e22;
  --primary-2: #c17a3a;
  --primary-soft: #f3dfc8;
  --accent: #e2a045;
  --accent-soft: #ffe8c2;
  --danger: #b42318;
  --ok: #3f7a3a;
  --shadow: 0 12px 32px rgba(90, 48, 24, .10);
  --radius: 20px;
  --sidebar: 268px;
  --font: "Poppins", "Segoe UI", sans-serif;
  --display: "Fredoka", "Poppins", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--font);
  background:
    radial-gradient(900px 420px at 100% -10%, rgba(226,160,69,.18), transparent 50%),
    radial-gradient(700px 380px at -10% 100%, rgba(111,62,34,.08), transparent 45%),
    var(--bg);
  color: var(--ink);
  line-height: 1.6;
}
a { color: inherit; }
button, input, select, textarea { font-family: inherit; }
img { max-width: 100%; }
h1, h2, .brand, .side-brand, .topbar h1 {
  font-family: var(--display);
}

.app-hidden { display: none !important; }

.auth-wrap {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
}
.hero {
  background:
    radial-gradient(1000px 460px at -8% -12%, rgba(226,160,69,.35), transparent 52%),
    radial-gradient(700px 360px at 100% 110%, rgba(255,232,194,.18), transparent 46%),
    linear-gradient(165deg, #2a160e 0%, #6f3e22 48%, #8a4e28 100%);
  color: #fff8ee;
  padding: 48px 56px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: auto -80px -80px auto;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.brand {
  display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 22px; letter-spacing: -.02em;
}
.logo-mark {
  width: 42px; height: 42px; border-radius: 12px;
  background: linear-gradient(135deg, #f2c36b, #c17a3a);
  color: #3a2416; display: grid; place-items: center; font-weight: 800;
  font-family: var(--display);
  box-shadow: 0 8px 20px rgba(0,0,0,.22);
}
.hero h1 {
  font-size: clamp(32px, 4.5vw, 52px);
  line-height: 1.12;
  letter-spacing: -.03em;
  max-width: 640px;
  margin: 28px 0 16px;
}
.hero p.lead { font-size: 18px; opacity: .88; max-width: 520px; }
.hero-stats { display: flex; gap: 28px; margin-top: 36px; }
.hero-stats b { display: block; font-size: 26px; }
.hero-stats span { font-size: 13px; opacity: .75; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.chip {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  padding: 6px 12px; border-radius: 999px; font-size: 13px;
}

.auth-panel {
  display: flex; align-items: center; justify-content: center;
  padding: 32px 24px;
  background: #fffaf3;
}
.auth-card { width: 100%; max-width: 420px; }
.auth-card h2 { font-size: 26px; letter-spacing: -.02em; margin-bottom: 6px; font-family: var(--display); }
.auth-card .sub { color: var(--muted); margin-bottom: 22px; }
.tabs { display: flex; gap: 8px; background: var(--bg); padding: 5px; border-radius: 12px; margin-bottom: 20px; }
.tabs button {
  flex: 1; border: 0; background: transparent; padding: 9px; border-radius: 9px;
  cursor: pointer; font-weight: 600; color: var(--muted);
}
.tabs button.active { background: #fff; color: var(--ink); box-shadow: var(--shadow); }
label { display: block; font-size: 13px; font-weight: 600; margin: 12px 0 6px; }
input, select {
  width: 100%; padding: 12px 14px; border-radius: 12px;
  border: 1.5px solid var(--line); background: #fff; font-size: 15px;
  outline: none; transition: border .15s, box-shadow .15s;
}
input:focus, select:focus { border-color: var(--primary-2); box-shadow: 0 0 0 4px var(--primary-soft); }
input[type="radio"], input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  margin: 0;
  pointer-events: none;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 0; cursor: pointer; font-weight: 700; border-radius: 12px;
  padding: 12px 16px; transition: transform .12s, filter .12s;
}
.btn:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn-primary { background: var(--primary); color: #fff8ee; width: 100%; margin-top: 16px; }
.btn-accent { background: var(--accent); color: #3a2416; }
.btn-ghost { background: var(--bg); color: var(--ink); border: 1px solid var(--line); }
.btn-sm { padding: 8px 12px; font-size: 13px; border-radius: 10px; width: auto; }
.demo-box {
  margin-top: 18px; background: #f6efe4; border: 1px dashed var(--line);
  border-radius: 12px; padding: 12px 14px; font-size: 13px; color: var(--muted);
}
.demo-box code { background: #fff; padding: 1px 6px; border-radius: 6px; color: var(--ink); }
.err { color: var(--danger); font-size: 13px; margin-top: 8px; min-height: 18px; }

.shell { display: grid; grid-template-columns: var(--sidebar) 1fr; min-height: 100vh; }
.sidebar {
  background: linear-gradient(180deg, #2a160e 0%, #3d2418 100%);
  color: #f6efe4;
  padding: 22px 16px;
  display: flex; flex-direction: column;
  position: sticky; top: 0; height: 100vh;
}
.side-brand { display: flex; align-items: center; gap: 10px; padding: 4px 8px 12px; font-weight: 700; }
.mascot {
  width: 100%;
  height: 110px;
  object-fit: cover;
  border-radius: 14px;
  margin: 0 0 14px;
  border: 1px solid rgba(255,232,194,.25);
}
.nav { display: flex; flex-direction: column; gap: 4px; }
.nav button {
  text-align: left; background: transparent; border: 0; color: #ead9c6;
  padding: 11px 12px; border-radius: 11px; cursor: pointer; font-weight: 600; font-size: 14px;
  display: flex; align-items: center; gap: 10px;
}
.nav button:hover { background: rgba(255,255,255,.06); }
.nav button.active { background: rgba(226,160,69,.22); color: #ffe8c2; }
.side-foot { margin-top: auto; padding: 12px 8px 4px; }
.user-mini { display: flex; align-items: center; gap: 10px; }
.avatar {
  width: 38px; height: 38px; border-radius: 12px;
  background: linear-gradient(135deg, #e2a045, #6f3e22);
  display: grid; place-items: center; font-weight: 800; color: #fff; font-size: 13px;
}
.user-mini small { display: block; color: #d7b89a; font-size: 12px; }
.logout { margin-top: 12px; width: 100%; }

.main { padding: 28px 32px 48px; max-width: 1180px; }
.topbar { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 22px; }
.topbar h1 { font-size: 26px; letter-spacing: -.02em; }
.topbar p { color: var(--muted); }

.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.page-hero {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 18px;
  margin-bottom: 16px;
  display: block;
  box-shadow: var(--shadow);
}
.thumb-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 12px 0 18px; }
.thumb-row img {
  width: 100%; height: 140px; object-fit: cover; border-radius: 14px;
  border: 1px solid var(--line);
}
.course-card img.cover {
  width: 100%; height: 140px; object-fit: cover; border-radius: 12px; margin-bottom: 10px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
}
.stat b { font-size: 26px; letter-spacing: -.03em; display: block; }
.stat span { color: var(--muted); font-size: 13px; }
.progress {
  height: 8px; background: #ead9c6; border-radius: 99px; overflow: hidden; margin-top: 10px;
}
.progress > i { display: block; height: 100%; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 99px; }

.course-card { cursor: pointer; transition: transform .15s, box-shadow .15s; }
.course-card:hover { transform: translateY(-3px); box-shadow: 0 16px 40px rgba(90,48,24,.14); }
.subj-pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12px; font-weight: 700; padding: 4px 10px; border-radius: 99px;
}
.course-card h3 { margin: 10px 0 6px; font-size: 17px; font-family: var(--display); }
.course-card p { color: var(--muted); font-size: 13.5px; }
.meta { display: flex; gap: 12px; margin-top: 12px; font-size: 12px; color: var(--muted); }

.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.filters button, .kelas-tab {
  border: 1px solid var(--line); background: #fff; padding: 8px 12px; border-radius: 999px;
  cursor: pointer; font-weight: 600; font-size: 13px; color: var(--muted);
}
.filters button.active, .kelas-tab.active { background: var(--primary); color: #fff8ee; border-color: var(--primary); }

.lesson-wrap { display: grid; grid-template-columns: 280px 1fr; gap: 18px; }
.lesson-nav button {
  width: 100%; text-align: left; background: #fff; border: 1px solid var(--line);
  padding: 10px 12px; border-radius: 12px; margin-bottom: 8px; cursor: pointer; font-weight: 600;
}
.lesson-nav button.active { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }
.article h3 { margin: 16px 0 8px; font-family: var(--display); }
.article p, .article li { margin-bottom: 8px; }
.article ul, .article ol { padding-left: 18px; }
.formula {
  background: #3a2416; color: #fff8ee; padding: 14px 16px; border-radius: 12px;
  font-family: ui-monospace, Menlo, Consolas, monospace; margin: 12px 0;
}

.quiz-opt, .soal-blok label {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  margin: 8px 0;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1.5px solid var(--line);
  background: #fff;
  cursor: pointer;
  font-weight: 600;
  text-align: left;
}
.quiz-opt:has(input:checked),
.soal-blok label:has(input:checked) {
  border-color: var(--primary);
  background: var(--primary-soft);
}
.opt-huruf {
  min-width: 28px;
  font-weight: 800;
  color: var(--primary);
  text-align: left;
}
.opt-teks {
  flex: 1;
  text-align: center;
}
.quiz-opt:hover { border-color: var(--primary-2); }
.quiz-opt.picked { border-color: var(--primary); background: var(--primary-soft); }
.quiz-opt.correct { border-color: var(--ok); background: #e5f4e4; }
.quiz-opt.wrong { border-color: var(--danger); background: #fde8e6; }

.badge-row { display: flex; gap: 10px; flex-wrap: wrap; }
.badge {
  background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 10px 12px;
  min-width: 140px;
}
.badge.locked { opacity: .45; filter: grayscale(.6); }
.badge b { display: block; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 8px; text-align: left; border-bottom: 1px solid var(--line); }
th { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

.toast {
  position: fixed; bottom: 22px; right: 22px; background: #3a2416; color: #fff8ee;
  padding: 12px 16px; border-radius: 12px; box-shadow: var(--shadow); z-index: 50;
  animation: up .25s ease;
}
.part-tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.part-tabs button {
  border: 1px solid var(--line); background: #fff; padding: 10px 14px; border-radius: 12px;
  cursor: pointer; font-weight: 700; font-size: 13px; color: var(--muted);
}
.part-tabs button.active { background: var(--primary); color: #fff8ee; border-color: var(--primary); }
.part-mini { display: flex; gap: 6px; flex-wrap: wrap; }
.part-mini span {
  font-size: 11px; font-weight: 700; color: var(--muted);
  background: var(--bg); padding: 3px 8px; border-radius: 99px;
}
.part-mini span.ok { background: #e5f4e4; color: var(--ok); }
.media-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.media-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin: 12px 0 18px; }
.media-grid figure { margin: 0; background: #f6efe4; border-radius: 14px; overflow: hidden; border: 1px solid var(--line); }
.media-grid img { width: 100%; height: 180px; object-fit: contain; background: #fff; display: block; }
.media-grid figcaption { padding: 8px 10px; font-size: 12px; color: var(--muted); }
.video-wrap { position: relative; padding-bottom: 56.25%; height: 0; margin: 8px 0 18px; border-radius: 14px; overflow: hidden; background: #3a2416; }
.video-wrap iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.obj-list { padding-left: 18px; }
.obj-list li { margin: 8px 0; }
.kunci-item { padding: 12px; border-radius: 12px; background: #f6efe4; margin: 10px 0; border: 1px solid var(--line); }
.kunci-a { color: var(--ok); font-weight: 700; margin-top: 6px; }
.kunci-x { color: var(--muted); font-size: 13px; margin-top: 4px; }
.done-flag { margin-top: 16px; color: var(--ok); font-weight: 700; }
.match-board { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
textarea {
  width: 100%; padding: 12px 14px; border-radius: 12px; border: 1.5px solid var(--line);
  font-family: inherit; font-size: 14px; resize: vertical; margin-top: 8px;
}
textarea:focus { outline: none; border-color: var(--primary-2); box-shadow: 0 0 0 4px var(--primary-soft); }
@keyframes up { from { transform: translateY(12px); opacity: 0; } }

.mob-bar, .mob-close { display: none; }
.nav-backdrop { display: none; }

@media (max-width: 980px) {
  .auth-wrap, .lesson-wrap { grid-template-columns: 1fr; }
  .hero { padding: 28px 18px; min-height: 220px; }
  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }

  .shell {
    display: block;
    min-height: 100vh;
  }
  .mob-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    position: sticky;
    top: 0;
    z-index: 40;
    height: 56px;
    padding: 0 12px;
    background: #2a160e;
    color: #ffe8c2;
    box-shadow: 0 2px 10px rgba(0,0,0,.15);
  }
  .mob-bar b { font-size: 16px; }
  .mob-hamburger {
    width: 40px; height: 40px;
    border: 0; border-radius: 10px;
    background: #c17a45; color: #fff;
    font-size: 20px; font-weight: 800; cursor: pointer;
  }
  .mob-close {
    display: block;
    background: transparent; border: 0; color: #ffe8c2;
    text-align: left; padding: 4px 8px 12px; font-weight: 700; cursor: pointer;
  }
  .nav-backdrop {
    display: none;
    position: fixed; inset: 0;
    background: rgba(20,10,5,.45);
    z-index: 45;
  }
  .sidebar {
    position: fixed;
    top: 0; left: 0; bottom: 0;
    width: min(80vw, 280px);
    height: 100vh;
    z-index: 50;
    transform: translateX(-105%);
    transition: transform .22s ease;
    overflow-y: auto;
    padding-top: 16px;
  }
  .shell.menu-open .sidebar { transform: translateX(0); }
  .shell.menu-open .nav-backdrop { display: block; }
  .main { padding: 16px 16px 36px; max-width: 100%; }
  .topbar { margin-bottom: 14px; }
  .topbar h1 { font-size: 22px; }
  .card { padding: 14px; }
}

.li-card { overflow: hidden; padding: 0; margin-bottom: 16px; }
.li-cover { height: 120px; background: linear-gradient(120deg,#e8d5a3,#f3efe4 55%,#c17a45); }
.li-cover img { width: 100%; height: 120px; object-fit: cover; display: block; }
.li-body { padding: 0 20px 20px; }
.li-ava {
  width: 96px; height: 96px; border-radius: 50%;
  object-fit: cover; border: 4px solid #fff;
  margin-top: -48px; background: #c17a45;
  box-shadow: 0 4px 14px rgba(0,0,0,.12);
}
.li-name { font-size: 22px; margin: 10px 0 2px; }
.li-role { color: #444; font-weight: 600; }
.li-meta { color: var(--muted); font-size: 13px; margin-top: 4px; }
.li-about { margin-top: 18px; }
.li-about p { white-space: pre-wrap; line-height: 1.65; color: #3b2a1d; }
.li-skills {
  margin-top: 16px; padding: 12px 14px;
  border: 1px solid var(--line); border-radius: 12px;
  font-size: 13px; color: #4a3728;
}