/* =========================================================
   Aplikasi Ujian — UPTD BLK Metro
   Kerangka: kop surat resmi lembaga di atas setiap layar.
   Satu warna aksi (biru dinas), sudut tegas, tanpa bayangan.
   ========================================================= */
:root {
  --ground: #f1f2ef;
  --surface: #ffffff;
  --surface-2: #f6f7f4;
  --surface-3: #eceee9;
  --line: #d8dcd5;
  --line-strong: #b9bfb6;
  --ink: #16201b;
  --ink-2: #3a453f;
  --muted: #5e6962;

  --primary: #173c63;
  --primary-hover: #0f2d4c;
  --primary-soft: #e4ebf2;
  --primary-ink: #ffffff;

  --ok: #1d6a44;
  --ok-soft: #e2f0e7;
  --warn: #8a5a00;
  --warn-fill: #e8b33c;
  --warn-soft: #f8eed6;
  --danger: #b0261b;
  --danger-soft: #f8e6e3;

  --r: 4px;
  --r-lg: 6px;
  --font: "Segoe UI Variable Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--ground);
  color: var(--ink);
  font: 15px/1.5 var(--font);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { margin: 0 0 .5em; line-height: 1.2; letter-spacing: -0.01em; color: var(--ink); }
h1 { font-size: 1.75rem; font-weight: 700; }
h2 { font-size: 1.25rem; font-weight: 650; }
h3 { font-size: 1rem; font-weight: 650; }
p { margin: 0 0 .75em; }
a { color: var(--primary); }
code { font-size: .9em; background: var(--surface-3); padding: 1px 5px; border-radius: 3px; }
.muted { color: var(--muted); }
.small { font-size: .85rem; }
.hidden { display: none !important; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ---------- Kop (identitas lembaga) ---------- */
.kop { display: flex; align-items: center; gap: 12px; min-width: 0; }
.kop-logo { width: 30px; height: auto; flex: none; display: block; }
.kop-text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.kop-text span { font-size: .8rem; color: var(--muted); }
.kop-text strong { font-size: .95rem; font-weight: 650; color: var(--ink); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kop.lg .kop-logo { width: 40px; }
.kop.lg .kop-text span { font-size: .85rem; }
.kop.lg .kop-text strong { font-size: 1.05rem; }

.kop-bar {
  background: var(--surface);
  border-bottom: 3px solid var(--primary);
  padding: 14px max(16px, calc((100% - 1120px) / 2));
  display: flex; align-items: center; gap: 16px;
}
/* Deretan logo mitra (sumber 908x192 px). Tinggi maksimal 96 px CSS = 1:1 di layar 2x,
   jadi gambar tidak pernah diperbesar melebihi resolusi aslinya. */
.mitra { display: block; height: 80px; width: auto; max-width: 100%; flex: none; image-rendering: auto; }
.mitra.sm { height: 40px; }
.admin-top .mitra { height: 46px; }
@media (max-width: 600px) {
  /* 300 px CSS x 3 (layar HP terpadat) = 900 px <= 908 px asli: tidak pernah diperbesar */
  .kop-bar .mitra { height: auto; width: 100%; max-width: 300px; }
  .topbar .mitra { display: none; }
  .admin-top .mitra { height: 36px; }
}

/* ---------- Komponen dasar ---------- */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: 20px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  min-height: 38px; padding: 7px 14px;
  border: 1px solid var(--line-strong); border-radius: var(--r);
  background: var(--surface); color: var(--ink);
  font: inherit; font-weight: 600; cursor: pointer; text-decoration: none; white-space: nowrap;
  transition: background-color .12s, border-color .12s, color .12s;
}
.btn:hover { background: var(--surface-2); border-color: var(--muted); }
.btn:active { background: var(--surface-3); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn.success { background: var(--ok); border-color: var(--ok); color: #fff; }
.btn.success:hover { background: #155636; }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger:hover { background: #8f1d14; }
.btn.ghost-danger { color: var(--danger); }
.btn.ghost-danger:hover { background: var(--danger-soft); border-color: var(--danger); }
.btn.warn { color: var(--warn); border-color: #d9c08a; background: var(--surface); }
.btn.warn:hover { background: var(--warn-soft); }
.btn.warn.on { background: var(--warn-fill); border-color: var(--warn-fill); color: #2b1d00; }
.btn.sm { min-height: 30px; padding: 3px 10px; font-size: .85rem; }
.btn.lg { min-height: 46px; padding: 10px 22px; font-size: 1rem; }

label { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 5px; color: var(--ink-2); }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%; min-height: 40px; padding: 8px 11px;
  border: 1px solid var(--line-strong); border-radius: var(--r);
  background: var(--surface); color: var(--ink); font: inherit;
}
textarea { resize: vertical; min-height: 80px; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-soft); }
input[type=file] { font: inherit; font-size: .9rem; }
.field { margin-bottom: 14px; }
.check { display: flex; gap: 9px; align-items: center; font-weight: 500; color: var(--ink); }
.check input { width: 17px; height: 17px; accent-color: var(--primary); flex: none; }

.alert { padding: 10px 12px; border-radius: var(--r); font-size: .92rem; margin: 12px 0; border-left: 3px solid; }
.alert.error { background: var(--danger-soft); color: #7d1a12; border-color: var(--danger); }
.alert.info { background: var(--primary-soft); color: #13324f; border-color: var(--primary); }
.alert.warn { background: var(--warn-soft); color: #5f3e00; border-color: var(--warn-fill); }

.badge { display: inline-block; padding: 1px 7px; border-radius: 3px; font-size: .78rem; font-weight: 650; white-space: nowrap; line-height: 1.6; }
.badge.gray { background: var(--surface-3); color: var(--ink-2); }
.badge.blue { background: var(--primary-soft); color: var(--primary); }
.badge.green { background: var(--ok-soft); color: var(--ok); }
.badge.red { background: var(--danger-soft); color: var(--danger); }
.badge.yellow { background: var(--warn-soft); color: var(--warn); }

/* Tabel */
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: 9px 12px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { background: var(--surface-2); font-weight: 650; color: var(--ink-2); position: sticky; top: 0; z-index: 1; white-space: nowrap; }
tbody tr:hover td { background: #fafbf9; }
tbody tr:last-child td { border-bottom: 0; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: var(--r-lg); background: var(--surface); max-height: 70vh; }
td.num, th.num { text-align: right; }
.ok { color: var(--ok); font-weight: 650; }
.no { color: var(--danger); font-weight: 650; }

/* Modal */
.modal-bg { position: fixed; inset: 0; background: rgba(14, 22, 30, .5); display: flex; align-items: flex-start; justify-content: center; padding: 48px 16px; z-index: 50; overflow: auto; }
.modal { background: var(--surface); border-radius: var(--r-lg); width: min(920px, 100%); box-shadow: 0 18px 50px rgba(0, 0, 0, .25); }
.modal.narrow { width: min(460px, 100%); }
.modal-head { display: flex; align-items: center; gap: 10px; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.modal-head h2 { margin: 0; flex: 1; font-size: 1.15rem; }
.modal-body { padding: 20px; }
.modal-foot { padding: 14px 20px; border-top: 1px solid var(--line); display: flex; justify-content: flex-end; gap: 8px; background: var(--surface-2); border-radius: 0 0 var(--r-lg) var(--r-lg); }

.toast-box { position: fixed; top: 16px; left: 50%; transform: translateX(-50%); z-index: 100; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast { background: var(--ink); color: #fff; padding: 10px 16px; border-radius: var(--r); box-shadow: 0 8px 24px rgba(0, 0, 0, .2); font-size: .92rem; max-width: min(560px, 92vw); white-space: pre-line; }
.toast.error { background: var(--danger); }
.toast.warn { background: #7a4f00; }

/* ---------- Halaman masuk peserta ---------- */
.auth {
  max-width: 1120px; margin: 0 auto; padding: 72px 32px 48px;
  display: grid; grid-template-columns: 1.15fr .85fr; column-gap: 64px; align-items: start;
  grid-template-areas: "intro form" "prep form";
}
.auth-intro { grid-area: intro; }
.auth .prep { grid-area: prep; }
.auth-form { grid-area: form; }
.auth h1 { font-size: 2.6rem; line-height: 1.1; letter-spacing: -0.025em; margin-bottom: 16px; max-width: 18ch; }
.auth-lead { font-size: 1.1rem; color: var(--ink-2); max-width: 46ch; margin-bottom: 28px; }
.prep { margin: 0; padding: 0; list-style: none; display: grid; gap: 0; max-width: 520px; border-top: 1px solid var(--line); }
.prep li { display: grid; grid-template-columns: 150px 1fr; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.prep b { font-weight: 650; }
.prep span { color: var(--ink-2); }
.auth-form { background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--primary); border-radius: var(--r-lg); padding: 28px; }
.auth-form h2 { font-size: 1.35rem; margin-bottom: 18px; }
.auth-form .btn { width: 100%; }
.auth-note { font-size: .85rem; color: var(--muted); margin: 14px 0 0; }
.site-foot { max-width: 1120px; margin: 0 auto; padding: 24px 32px 40px; color: var(--muted); font-size: .85rem; }
@media (max-width: 860px) {
  .auth { grid-template-columns: 1fr; grid-template-areas: "intro" "form" "prep"; row-gap: 28px; padding: 28px 16px; }
  .auth-lead { margin-bottom: 0; }
  .auth h1 { font-size: 2rem; }
  .prep li { grid-template-columns: 1fr; gap: 2px; }
  .site-foot { padding: 16px; }
}

/* ---------- Lobi & selesai ---------- */
.page { max-width: 1120px; margin: 0 auto; padding: 48px 32px; }
.page-head { margin-bottom: 28px; }
.page-head h1 { font-size: 2.1rem; letter-spacing: -0.02em; margin-bottom: 6px; }
.lobby-grid { display: grid; grid-template-columns: 380px 1fr; gap: 20px; align-items: start; }
.facts { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 0; }
.facts dt, .facts dd { padding: 9px 0; border-bottom: 1px solid var(--line); margin: 0; }
.facts dt { color: var(--muted); padding-right: 16px; }
.facts dd { font-weight: 600; text-align: right; }
.facts dt:last-of-type, .facts dd:last-of-type { border-bottom: 0; }
.rules { padding-left: 20px; margin: 0; }
.rules li { margin-bottom: 8px; padding-left: 4px; }
.start-bar { display: flex; align-items: flex-end; gap: 16px; flex-wrap: wrap; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
.start-bar .field { margin: 0; }
@media (max-width: 860px) {
  .page { padding: 24px 16px; }
  .lobby-grid { grid-template-columns: 1fr; }
  .page-head h1 { font-size: 1.6rem; }
}
.result { max-width: 560px; margin: 64px auto; text-align: center; }
.result h1 { font-size: 1.9rem; }
.score-big { font-size: 4.5rem; font-weight: 750; color: var(--primary); line-height: 1; margin: 12px 0 8px; letter-spacing: -0.03em; }

/* ---------- Halaman ujian ---------- */
.exam-page { user-select: none; -webkit-user-select: none; }
.topbar {
  background: var(--surface); border-bottom: 3px solid var(--primary);
  padding: 10px 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  position: sticky; top: 0; z-index: 10;
}
.topbar .who { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.topbar .title { font-weight: 650; }
.topbar .who .muted { font-size: .85rem; }
.timer-box { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.15; }
.timer-box small { font-size: .75rem; color: var(--muted); }
.timer { font-weight: 750; font-size: 1.35rem; color: var(--primary); letter-spacing: .01em; }
.timer.low { color: var(--danger); }
.exam-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 20px; padding: 24px; max-width: 1280px; margin: 0 auto; }
@media (max-width: 900px) { .exam-layout { grid-template-columns: 1fr; padding: 12px; } .topbar { padding: 8px 12px; } }
.q-card { padding: 28px 32px; }
.topbar .who .title, .topbar .who .muted { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 600px) {
  .q-card { padding: 18px 16px; }
  .topbar { flex-wrap: nowrap; gap: 10px; }
  .topbar .who { flex: 1; }
  .topbar .spacer { display: none; }
  .timer { font-size: 1.2rem; }
  .q-nav .spacer { display: none; }
  .q-nav .btn { flex: 1; padding-left: 8px; padding-right: 8px; }
  .q-nav .save-state { order: 5; width: 100%; text-align: center; }
}
.q-head { display: flex; align-items: baseline; gap: 8px; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--line); }
.q-no { font-size: 1.15rem; font-weight: 700; color: var(--ink); }
.q-text { font-size: 1.15rem; line-height: 1.6; white-space: pre-wrap; margin-bottom: 20px; max-width: 70ch; }
.q-image { max-width: 100%; max-height: 380px; border: 1px solid var(--line); margin-bottom: 20px; display: block; background: #fff; }
.options { display: flex; flex-direction: column; gap: 8px; max-width: 760px; }
.option {
  display: flex; gap: 14px; align-items: flex-start; text-align: left; width: 100%;
  border: 1px solid var(--line-strong); border-radius: var(--r); background: var(--surface);
  padding: 12px 14px; cursor: pointer; font: inherit; color: inherit;
  transition: background-color .12s, border-color .12s;
}
.option:hover { border-color: var(--primary); background: #f8fafc; }
.option .letter {
  flex: none; width: 30px; height: 30px; border-radius: 3px;
  border: 1px solid var(--line-strong); display: grid; place-items: center;
  font-weight: 700; color: var(--ink-2); background: var(--surface-2);
}
.option .otext { padding-top: 4px; white-space: pre-wrap; font-size: 1.02rem; }
.option.selected { border-color: var(--primary); background: var(--primary-soft); box-shadow: inset 3px 0 0 var(--primary); }
.option.selected .letter { background: var(--primary); border-color: var(--primary); color: #fff; }
.q-nav { display: flex; gap: 10px; margin-top: 28px; padding-top: 18px; border-top: 1px solid var(--line); flex-wrap: wrap; align-items: center; }
.save-state { font-size: .85rem; color: var(--muted); }
.save-state.err { color: var(--danger); font-weight: 600; }
.side-card h3 { margin-bottom: 4px; }
.nav-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 5px; margin: 12px 0 14px; }
.nav-grid button {
  border: 1px solid var(--line-strong); background: var(--surface); border-radius: 3px;
  padding: 7px 0; font: inherit; font-size: .9rem; font-weight: 650; cursor: pointer; color: var(--ink-2);
}
.nav-grid button:hover { border-color: var(--primary); }
.nav-grid button.answered { background: var(--primary); border-color: var(--primary); color: #fff; }
.nav-grid button.flagged { background: var(--warn-fill); border-color: var(--warn-fill); color: #2b1d00; }
.nav-grid button.current { outline: 2px solid var(--ink); outline-offset: 1px; }
.nav-grid button.locked { background: var(--surface-3); border-color: var(--surface-3); color: #a3aaa4; cursor: not-allowed; }
.nav-grid button.locked:hover { border-color: var(--surface-3); }
.seq-hint { margin: 14px 0 0; font-size: .9rem; color: var(--muted); }
.legend .l-lock::before { background: var(--surface-3); border-color: var(--surface-3); }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: .8rem; color: var(--muted); }
.legend span::before { content: ""; display: inline-block; width: 11px; height: 11px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; background: var(--surface); border: 1px solid var(--line-strong); }
.legend .l-ans::before { background: var(--primary); border-color: var(--primary); }
.legend .l-flag::before { background: var(--warn-fill); border-color: var(--warn-fill); }
.progress { height: 6px; background: var(--surface-3); border-radius: 3px; overflow: hidden; margin: 6px 0 16px; }
.progress > i { display: block; height: 100%; background: var(--primary); transition: width .2s; }

.gate { position: fixed; inset: 0; z-index: 40; background: #0e1b2a; color: #fff; display: flex; align-items: center; justify-content: center; padding: 24px; }
.gate .box { max-width: 520px; }
.gate h2 { font-size: 1.6rem; color: #fff; }
.gate p { color: #c9d3de; font-size: 1.02rem; margin-bottom: 24px; }
.gate .btn.primary { background: #fff; border-color: #fff; color: var(--primary); }
.gate .btn.primary:hover { background: #e4ebf2; }

/* ---------- Panel admin ---------- */
.admin-top { background: var(--surface); border-bottom: 1px solid var(--line); padding: 10px 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.admin-top .divider { width: 1px; align-self: stretch; background: var(--line); }
.admin-top .app-name { display: flex; flex-direction: column; line-height: 1.25; }
.admin-top .app-name span { font-size: .8rem; color: var(--muted); }
.admin-top .app-name b { font-weight: 650; }
.tabs { display: flex; gap: 2px; padding: 0 24px; background: var(--surface); border-bottom: 3px solid var(--primary); overflow-x: auto; overflow-y: hidden; scrollbar-width: none; }
.tabs::-webkit-scrollbar { display: none; }
td.cls { min-width: 170px; }
.toolbar select { max-width: 280px; }
.tabs button { border: 0; background: none; padding: 12px 14px 10px; font: inherit; font-weight: 600; color: var(--muted); cursor: pointer; border-bottom: 3px solid transparent; margin-bottom: -3px; white-space: nowrap; }
.tabs button:hover { color: var(--ink); }
.tabs button.active { color: var(--primary); border-bottom-color: var(--primary); background: var(--primary-soft); }
.admin-main { padding: 24px; max-width: 1400px; margin: 0 auto; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); margin-bottom: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); }
.stat { padding: 14px 18px; border-right: 1px solid var(--line); }
.stat:last-child { border-right: 0; }
.stat .v { font-size: 1.75rem; font-weight: 700; letter-spacing: -0.02em; line-height: 1.2; }
.stat .k { color: var(--muted); font-size: .85rem; }
.modal .stats .stat .v { font-size: 1.5rem; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
.toolbar input[type=text], .toolbar select { width: auto; min-width: 190px; }
.switch { display: inline-flex; align-items: center; gap: 10px; font-weight: 600; cursor: pointer; margin: 0; color: var(--ink); }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch .track { width: 42px; height: 24px; border-radius: 12px; background: var(--line-strong); position: relative; transition: background-color .15s; flex: none; }
.switch .track::after { content: ""; position: absolute; top: 3px; left: 3px; width: 18px; height: 18px; border-radius: 50%; background: #fff; transition: transform .15s; }
.switch input:checked + .track { background: var(--ok); }
.switch input:checked + .track::after { transform: translateX(18px); }
.switch input:focus-visible + .track { outline: 2px solid var(--primary); outline-offset: 2px; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 6px; vertical-align: 1px; }
.dot.on { background: var(--ok); }
.dot.off { background: var(--line-strong); }
.dot.away { background: var(--danger); animation: blink 1s infinite; }
@keyframes blink { 50% { opacity: .25; } }
@media (prefers-reduced-motion: reduce) { .dot.away { animation: none; } * { transition: none !important; } }
.qtext-cell { max-width: 440px; white-space: pre-wrap; }
.bar { height: 8px; background: var(--surface-3); border-radius: 2px; overflow: hidden; min-width: 80px; }
.bar > i { display: block; height: 100%; background: var(--primary); }
.opt-row { display: grid; grid-template-columns: 30px 1fr; gap: 8px; align-items: center; margin-bottom: 8px; }
.opt-row b { text-align: center; color: var(--ink-2); }
.preview-img { max-width: 220px; max-height: 140px; border: 1px solid var(--line); display: block; margin-top: 6px; }
.panel-title { font-size: 1.05rem; margin: 22px 0 10px; }
@media (max-width: 700px) { .admin-main { padding: 12px; } .admin-top, .tabs { padding-left: 12px; padding-right: 12px; } .stat { border-right: 0; border-bottom: 1px solid var(--line); } }