:root {
  --navy: #0b2545;
  --navy-dark: #071a33;
  --gold: #c9a34a;
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #1c2530;
  --muted: #64748b;
  --border: #e2e8f0;
  --success: #1a7f4e;
  --danger: #c0392b;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a { color: var(--navy); text-decoration: none; }
a:hover { text-decoration: underline; }

.navbar {
  background: linear-gradient(90deg, var(--navy), var(--navy-dark));
  color: #fff;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

.navbar .brand { font-weight: 700; font-size: 1.1rem; color: #fff; display: flex; align-items: center; gap: 0.5rem; }
.navbar .brand .badge { background: var(--gold); color: var(--navy-dark); font-size: 0.7rem; padding: 2px 8px; border-radius: 20px; font-weight: 700; }
.navbar nav a { color: #dbe4f0; margin-left: 1.2rem; font-size: 0.92rem; }
.navbar nav a:hover { color: #fff; text-decoration: none; }
.navbar .user-info { color: #b9c6da; font-size: 0.85rem; margin-right: 0.5rem; }

.container { max-width: 1080px; margin: 0 auto; padding: 1.5rem; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.25rem;
}

.card h2, .card h3 { margin-top: 0; }

.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }

.btn {
  display: inline-block;
  background: var(--navy);
  color: #fff;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: none;
}
.btn:hover { background: var(--navy-dark); text-decoration: none; color: #fff; }
.btn-gold { background: var(--gold); color: var(--navy-dark); font-weight: 600; }
.btn-gold:hover { background: #b8923d; color: var(--navy-dark); }
.btn-outline { background: transparent; color: var(--navy); border: 1px solid var(--navy); }
.btn-outline:hover { background: var(--navy); color: #fff; }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.82rem; }
.btn-danger { background: var(--danger); }

form p { margin: 0.6rem 0; }
label { font-weight: 600; font-size: 0.88rem; display: block; margin-bottom: 0.2rem; }
input[type=text], input[type=password], input[type=email], input[type=number],
input[type=date], input[type=datetime-local], input[type=file], input[type=url],
textarea, select {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.92rem;
  font-family: inherit;
  background: #fff;
}
textarea { resize: vertical; }

table { width: 100%; border-collapse: collapse; display: block; overflow-x: auto; white-space: nowrap; }
th, td { text-align: left; padding: 0.6rem 0.5rem; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
th { color: var(--muted); font-weight: 600; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }

.badge-pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 600;
}
.pill-ok { background: #e3f5ea; color: var(--success); }
.pill-warn { background: #fdf1e0; color: #a9660f; }
.pill-danger { background: #fbe6e3; color: var(--danger); }
.pill-muted { background: #eef1f5; color: var(--muted); }

.messages { list-style: none; padding: 0; margin: 0 0 1rem 0; }
.messages li { padding: 0.7rem 1rem; border-radius: 8px; margin-bottom: 0.5rem; font-size: 0.9rem; }
.messages .success { background: #e3f5ea; color: var(--success); }
.messages .error { background: #fbe6e3; color: var(--danger); }
.messages .info { background: #e6effb; color: #1c5aa8; }

.muted { color: var(--muted); font-size: 0.88rem; }
.mt-0 { margin-top: 0; }
.flex { display: flex; align-items: center; gap: 0.75rem; }
.flex-between { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.tabs { display: flex; gap: 0.4rem; margin-bottom: 1.25rem; flex-wrap: wrap; }
.tabs a { padding: 0.5rem 1rem; border-radius: 6px; background: #fff; border: 1px solid var(--border); color: var(--text); font-size: 0.88rem; }
.tabs a.active { background: var(--navy); color: #fff; border-color: var(--navy); }

.auth-wrap { max-width: 400px; margin: 4rem auto; }
.auth-wrap .card { text-align: left; }
.center { text-align: center; }

.list-plain { list-style: none; padding: 0; margin: 0; }
.list-plain li { padding: 0.6rem 0; border-bottom: 1px solid var(--border); }
.list-plain li:last-child { border-bottom: none; }

.timer { font-weight: 700; font-size: 1.1rem; color: var(--danger); }

.stat { text-align: center; }
.stat .num { font-size: 1.8rem; font-weight: 700; color: var(--navy); }
.stat .label { color: var(--muted); font-size: 0.82rem; }

/* Kuis bergaya Kahoot/Quizizz */
.quiz-progress { display: flex; gap: 0.3rem; margin-bottom: 1.2rem; flex-wrap: wrap; }
.quiz-progress .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--border); }
.quiz-progress .dot.answered { background: var(--gold); }
.quiz-question-card { border-radius: 14px; }
.quiz-question-card .q-num { display: inline-block; background: var(--navy); color: #fff; font-weight: 700; font-size: 0.78rem; padding: 3px 10px; border-radius: 20px; margin-bottom: 0.6rem; }
.kahoot-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; margin-top: 1rem; }
@media (max-width: 560px) { .kahoot-grid { grid-template-columns: 1fr; } }
.kahoot-choice {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 1.1rem 1.3rem;
  border-radius: 12px;
  cursor: pointer;
  color: #fff;
  font-weight: 700;
  font-size: 1.02rem;
  border: 3px solid transparent;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
  box-shadow: 0 2px 0 rgba(0,0,0,0.15);
  user-select: none;
}
.kahoot-choice:hover { transform: translateY(-2px); box-shadow: 0 4px 0 rgba(0,0,0,0.18); }
.kahoot-choice.selected { border-color: #fff; box-shadow: 0 0 0 3px rgba(255,255,255,0.6), 0 4px 0 rgba(0,0,0,0.18); transform: translateY(-2px); }
.kahoot-choice input[type=radio] { position: absolute; opacity: 0; pointer-events: none; }
.kahoot-shape { font-size: 1.4rem; line-height: 1; flex-shrink: 0; }
.kahoot-a { background: linear-gradient(135deg, #e74c3c, #c0392b); }
.kahoot-b { background: linear-gradient(135deg, #2980b9, #1c5aa8); }
.kahoot-c { background: linear-gradient(135deg, #f1c40f, #d4a70a); color: #1c2530; }
.kahoot-d { background: linear-gradient(135deg, #27ae60, #1e8449); }

.leaderboard-medal { font-size: 1.3rem; }