* { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --pr: #1f4e8c;
  --pr2: #2d6fbf;
  --bg: #f4f6fa;
  --card: #ffffff;
  --ink: #1c2733;
  --muted: #67788c;
  --line: #dfe6ef;
  --ok: #1f9d55;
  --no: #d64545;
  --warn: #d98a1f;
  --radius: 12px;
}
body { font-family: "Segoe UI", system-ui, sans-serif; background: var(--bg); color: var(--ink); line-height: 1.55; }
a { color: var(--pr); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 0 16px; }

.topbar { background: var(--pr); color: #fff; }
.topbar-in { display: flex; justify-content: space-between; align-items: center; padding: 14px 16px; }
.brand { color: #fff; font-weight: 700; font-size: 1.15rem; }
.brand span { font-weight: 400; opacity: .85; font-size: .8rem; display: block; }
.topbar nav a { color: #fff; margin-left: 18px; opacity: .9; }
.topbar nav a:hover { opacity: 1; text-decoration: none; }

.hero { background: linear-gradient(135deg, var(--pr), var(--pr2)); color: #fff; border-radius: var(--radius); padding: 40px 28px; margin: 24px 0; }
.hero h1 { font-size: 1.7rem; margin-bottom: 10px; }
.hero p { opacity: .92; max-width: 720px; }
.hero-stats { display: flex; gap: 26px; margin-top: 22px; flex-wrap: wrap; }
.hero-stat { text-align: center; min-width: 76px; }
.hero-stat b { display: block; font-size: 1.7rem; line-height: 1.1; }
.hero-stat span { font-size: .8rem; opacity: .85; }

.dash-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; margin-top: 16px; }
.tile { display: flex; align-items: flex-start; gap: 14px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; position: relative; overflow: hidden; transition: box-shadow .15s, transform .15s; }
.tile::before { content: ''; position: absolute; inset: 0 auto 0 0; width: 6px; background: linear-gradient(var(--c1), var(--c2)); }
.tile:hover { box-shadow: 0 6px 18px rgba(31,78,140,.14); transform: translateY(-2px); text-decoration: none; }
.tile-ico { flex-shrink: 0; width: 52px; height: 52px; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-weight: 800; color: #fff; background: linear-gradient(135deg, var(--c1), var(--c2)); font-size: 1rem; }
.tile-body { min-width: 0; }
.tile h3 { font-size: 1.02rem; margin-bottom: 4px; color: var(--ink); }
.tile p { font-size: .85rem; color: var(--muted); margin-bottom: 10px; }
.tile-badge { background: #eef2f7; color: var(--ink); }

.section { margin: 26px 0; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.section-head h1 { font-size: 1.5rem; }
.section h2 { font-size: 1.25rem; margin-bottom: 6px; }
.muted { color: var(--muted); }
.mt { margin-top: 16px; }
.crumbs { font-size: .85rem; color: var(--muted); margin-top: 18px; }
.crumbs a { color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; margin-top: 14px; }
.grid.small { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; display: block; transition: box-shadow .15s, transform .15s; }
.card:hover { box-shadow: 0 6px 18px rgba(31,78,140,.14); transform: translateY(-2px); text-decoration: none; }
.card h3 { font-size: 1.05rem; margin-bottom: 6px; }
.card p { font-size: .9rem; margin-bottom: 10px; }

.badge { display: inline-block; background: #e7eef7; color: var(--pr); border-radius: 20px; padding: 3px 10px; font-size: .75rem; font-weight: 600; }
.badge.ok { background: #e2f5ea; color: var(--ok); }
.badge.no { background: #fde9e9; color: var(--no); }

.btn { display: inline-block; background: var(--pr); color: #fff; border: none; border-radius: 8px; padding: 10px 18px; font-size: .95rem; cursor: pointer; }
.btn:hover { background: var(--pr2); text-decoration: none; }
.btn-primary { background: var(--pr); }
.btn-outline { background: transparent; border: 1px solid var(--pr); color: var(--pr); }
.btn-outline:hover { background: var(--pr); color: #fff; }
button.btn[disabled] { opacity: .5; cursor: not-allowed; }

.progress { background: var(--line); height: 8px; border-radius: 8px; margin: 18px 0; overflow: hidden; }
.progress-bar { background: var(--pr2); height: 100%; transition: width .2s; }

.quiz-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.quiz-meta { display: flex; gap: 8px; align-items: center; margin-bottom: 12px; }
.question-text { font-size: 1.05rem; margin-bottom: 4px; }
.question-body { margin: 8px 0 14px; }
.diagram { background: #0f1b2a; color: #9fe8ff; font-family: Consolas, monospace; font-size: .85rem; padding: 14px; border-radius: 8px; overflow-x: auto; margin: 10px 0; line-height: 1.3; }

.options { display: grid; gap: 8px; margin: 14px 0; }
.option { display: flex; align-items: flex-start; gap: 10px; border: 1px solid var(--line); border-radius: 8px; padding: 11px 12px; cursor: pointer; }
.option:hover { border-color: var(--pr2); background: #f2f7fd; }
.option input { margin-top: 3px; }
.quiz-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 8px; flex-wrap: wrap; }

.result-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; text-align: center; }
.score-ring { margin: 18px auto; width: 160px; height: 160px; border-radius: 50%; display: flex; flex-direction: column; align-items: center; justify-content: center; border: 8px solid var(--line); }
.score-ring.good { border-color: var(--ok); }
.score-ring.mid { border-color: var(--warn); }
.score-ring.bad { border-color: var(--no); }
.score-num { font-size: 2.6rem; font-weight: 800; }
.score-sub { font-size: .85rem; color: var(--muted); }
.verdict { font-weight: 600; }
.good-text { color: var(--ok); } .mid-text { color: var(--warn); } .bad-text { color: var(--no); }

.review { border: 1px solid var(--line); border-left: 5px solid var(--line); border-radius: 8px; padding: 16px; margin: 14px 0; background: var(--card); }
.review-ok { border-left-color: var(--ok); }
.review-wrong { border-left-color: var(--no); }
.review-head { display: flex; gap: 10px; align-items: center; margin-bottom: 8px; }
.optlist { list-style: none; margin: 10px 0; display: grid; gap: 4px; }
.optlist li { padding: 6px 8px; border-radius: 6px; }
.opt-kunci { background: #e2f5ea; }
.opt-salah { background: #fde9e9; }
.tag { font-size: .7rem; font-weight: 700; margin-left: 8px; color: var(--muted); }
.opt-kunci .tag { color: var(--ok); }
.opt-salah .tag { color: var(--no); }
.pembahasan { background: #f2f7fd; border-radius: 8px; padding: 10px 12px; font-size: .9rem; margin-top: 6px; }

.material-list { margin-top: 18px; }
.material { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.material h2 { font-size: 1.15rem; margin-bottom: 10px; color: var(--pr); }
.material-body p { margin: 8px 0; }
.material-body ul, .material-body ol { margin: 8px 0 8px 22px; }
.material-body table { border-collapse: collapse; width: 100%; margin: 10px 0; font-size: .9rem; }
.material-body th, .material-body td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; }
.material-body th { background: #e7eef7; }
.material-body code { background: #eef2f7; padding: 1px 6px; border-radius: 4px; font-size: .9em; }

.quiz-start { margin-top: 26px; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }

footer { color: var(--muted); font-size: .85rem; text-align: center; padding: 26px 16px 34px; border-top: 1px solid var(--line); margin-top: 30px; }

/* ================= AUTH ================= */
.auth-wrap { display: flex; justify-content: center; padding: 30px 0; }
.auth-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; width: 100%; max-width: 420px; }
.auth-card h1 { font-size: 1.4rem; margin-bottom: 16px; }
.alert { border-radius: 8px; padding: 10px 14px; margin-bottom: 14px; font-size: .9rem; }
.alert-error { background: #fde9e9; color: var(--no); border: 1px solid #f5c2c2; }

/* ================= FORM UMUM ================= */
.form-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; flex: 1; min-width: 0; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--muted); }
.form-group input, .form-group select, .form-group textarea {
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 12px; font-size: .95rem;
  font-family: inherit; background: #fff; width: 100%;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: 2px solid var(--pr2); border-color: transparent; }
.form-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* ================= TABEL ================= */
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); }
.table { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 560px; }
.table th, .table td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.table th { background: #e7eef7; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--pr); }
.table tr:last-child td { border-bottom: none; }
.table td.maxw { max-width: 320px; overflow-wrap: anywhere; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.actions form { margin: 0; }
.btn-sm { padding: 5px 10px; font-size: .8rem; }
.btn-danger { background: var(--no); }
.btn-danger:hover { background: #b93a3a; }

/* ================= ADMIN ================= */
.admin-nav { display: flex; gap: 6px; flex-wrap: wrap; margin: 16px 0; }
.admin-nav a { background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 7px 14px; font-size: .88rem; color: var(--pr); }
.admin-nav a:hover { text-decoration: none; border-color: var(--pr2); }
.admin-nav a.on { background: var(--pr); color: #fff; border-color: var(--pr); }
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 12px; margin-top: 14px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; text-align: center; }
.stat b { display: block; font-size: 1.7rem; color: var(--pr); }
.stat span { font-size: .82rem; color: var(--muted); }
.filter-bar { display: flex; align-items: center; gap: 8px; margin: 12px 0; flex-wrap: wrap; }
.filter-bar select { border: 1px solid var(--line); border-radius: 8px; padding: 7px 10px; }
.penilaian { background: #f2f7fd; border: 1px solid #cfe0f3; border-radius: var(--radius); padding: 16px; margin: 16px 0; text-align: left; }
.penilaian h2 { color: var(--pr); margin-bottom: 10px; }
.penilaian .table { background: transparent; min-width: 0; }
.penilaian .table td { border-bottom: 1px solid #dfe9f5; }

/* ================= RESPONSIVE ================= */
@media (max-width: 768px) {
  .topbar-in { flex-direction: column; gap: 10px; align-items: flex-start; }
  .topbar nav { display: flex; flex-wrap: wrap; gap: 8px 14px; }
  .topbar nav a { margin-left: 0; }
  .nav-user { order: 9; width: 100%; font-size: .82rem; opacity: .85; }
  .hero { padding: 26px 18px; }
  .hero h1 { font-size: 1.35rem; }
  .grid { grid-template-columns: 1fr; }
  .dash-grid { grid-template-columns: 1fr; }
  .score-ring { width: 130px; height: 130px; }
  .score-num { font-size: 2rem; }
  .quiz-nav { flex-direction: column; }
  .quiz-nav .btn { width: 100%; text-align: center; }
  .form-row { flex-direction: column; gap: 0; }
  .material-body table { display: block; overflow-x: auto; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 10px; }
  .material { padding: 14px; }
  .option { padding: 9px 10px; font-size: .92rem; }
  .diagram { font-size: .72rem; }
  .dash-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
  .tile { flex-direction: column; gap: 10px; padding: 14px; }
  .tile-ico { width: 44px; height: 44px; border-radius: 10px; font-size: .9rem; }
  .hero-stats { gap: 18px; }
}