:root {
  --ink: #1f2430;
  --muted: #5c6472;
  --line: #e3e6ec;
  --bg: #f7f7f4;
  --card: #ffffff;
  --accent: #b03a2e; /* merah tenang */
  --accent-dark: #93291d;
  --indigo: #2e3a67;
  --ok: #1e7d46;
  --bad: #b03a2e;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Hiragino Sans", "Noto Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
.hidden { display: none !important; }
.brand { font-weight: 700; font-size: 1.25rem; letter-spacing: .02em; color: var(--indigo); }
.brand.center { text-align: center; margin-bottom: 1rem; }
.btn {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  padding: .5rem 1rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1rem;
}
.btn:hover { border-color: var(--muted); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); }
.btn.ghost { background: transparent; }
.btn.big { padding: .75rem 1.5rem; font-size: 1.05rem; }
.btn.wide { width: 100%; }
.error { color: var(--bad); }
.note { color: var(--muted); font-size: .95rem; }
.subtitle { color: var(--muted); margin-top: -.5rem; }

/* Landing */
.landing-head, .app-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 1rem 1.5rem; border-bottom: 1px solid var(--line); background: var(--card);
  flex-wrap: wrap; gap: .75rem;
}
.hero { max-width: 880px; margin: 0 auto; padding: 3rem 1.5rem; text-align: center; }
.hero h1 { font-size: 2.2rem; line-height: 1.25; margin-bottom: 1rem; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 640px; margin: 0 auto 1.5rem; }
.features { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin-top: 2.5rem; text-align: left; }
.feature { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.25rem; }
.feature h3 { margin-top: 0; }
.foot { text-align: center; color: var(--muted); padding: 1.5rem; font-size: .9rem; }

/* Auth */
.auth-wrap { max-width: 420px; margin: 4rem auto; padding: 0 1rem; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1.5rem; }
.auth-card label { display: block; margin: .75rem 0 .25rem; font-weight: 600; }
.auth-card input, #review-form input {
  width: 100%; padding: .6rem .75rem; border: 1px solid var(--line);
  border-radius: 8px; font-size: 1rem;
}
.auth-card .btn { margin-top: 1rem; }
.switch { text-align: center; color: var(--muted); }
.switch a { color: var(--accent); }

/* Aplikasi */
.tabs { display: flex; gap: .25rem; }
.tab { border: none; background: transparent; padding: .5rem .9rem; border-radius: 8px; cursor: pointer; font-size: 1rem; }
.tab.active { background: var(--indigo); color: #fff; }
.userbox { display: flex; align-items: center; gap: .75rem; }
.user-email { color: var(--muted); font-size: .95rem; }
.app-main { max-width: 880px; margin: 0 auto; padding: 1.5rem; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 1rem; margin: 1rem 0; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 1rem; text-align: center; }
.stat-num { font-size: 2rem; font-weight: 700; color: var(--indigo); }
.stat-label { color: var(--muted); font-size: .9rem; }
.actions { display: flex; gap: .75rem; flex-wrap: wrap; align-items: center; margin: 1rem 0; }

/* Daftar poin */
.point-list { list-style: none; padding: 0; display: grid; gap: .5rem; }
.point-list li {
  background: var(--card); border: 1px solid var(--line); border-radius: 10px;
  padding: .75rem 1rem; display: flex; justify-content: space-between; align-items: center;
  cursor: pointer; gap: 1rem;
}
.point-list li:hover { border-color: var(--muted); }
.point-name { font-weight: 600; }
.point-sub { color: var(--muted); font-size: .9rem; display: block; }
.badge { font-size: .8rem; padding: .15rem .6rem; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); white-space: nowrap; }
.badge.learned { background: #eef6f0; color: var(--ok); border-color: #cfe6d6; }
.badge.due { background: #fdf0ee; color: var(--bad); border-color: #f2d5d0; }
.structure { background: #f0f1f6; border-radius: 8px; padding: .75rem 1rem; font-weight: 600; }
.example { border-left: 3px solid var(--indigo); padding: .25rem 0 .25rem 1rem; margin: .75rem 0; }
.example .jp { font-size: 1.15rem; }
.example .ans { color: var(--accent); font-weight: 700; }
.example .id { color: var(--muted); }

/* Review */
.review-meta { color: var(--muted); }
.review-sentence { font-size: 1.5rem; line-height: 1.8; margin: 1rem 0; }
#review-form { display: flex; gap: .5rem; }
#review-form input { flex: 1; font-size: 1.15rem; }
.verdict { font-size: 1.25rem; font-weight: 700; }
.verdict.ok { color: var(--ok); }
.verdict.bad { color: var(--bad); }

/* Progres */
.prog-table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.prog-table th, .prog-table td { padding: .6rem .9rem; border-bottom: 1px solid var(--line); text-align: left; }
.prog-table th { background: #f0f1f6; }
.prog-table tr:last-child td { border-bottom: none; }