:root {
  --bg: #0f1117;
  --panel: #171a23;
  --panel-2: #1e222d;
  --border: #2a2f3c;
  --text: #e7e9ee;
  --muted: #9aa1b1;
  --accent: #4f8cff;
  --accent-2: #2dd4bf;
  --danger: #ff5d5d;
  --ok: #34d399;
  --warn: #fbbf24;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg); color: var(--text);
  font-family: "Segoe UI", Arial, sans-serif;
  direction: rtl;
}
body { min-height: 100vh; display: flex; flex-direction: column; }
main { flex: 1; width: 100%; max-width: 900px; margin: 0 auto; padding: 24px 18px 60px; }
h1, h2, h3 { line-height: 1.25; }
a { color: var(--accent); }

.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px; margin: 16px 0;
}
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; }
label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
input, select, textarea, button {
  font-family: inherit; font-size: 15px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text);
  padding: 10px 12px;
}
textarea { width: 100%; min-height: 140px; resize: vertical; direction: ltr; text-align: left; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); }
button {
  cursor: pointer; background: var(--accent); color: #fff; border: none; font-weight: 600;
}
button.secondary { background: var(--panel-2); border: 1px solid var(--border); color: var(--text); }
button:disabled { opacity: .5; cursor: not-allowed; }

.muted { color: var(--muted); }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border); }
.flag { background: rgba(255,93,93,.15); color: var(--danger); border-color: var(--danger); }
.ok { color: var(--ok); }
.warn { color: var(--warn); }

table { width: 100%; border-collapse: collapse; margin-top: 10px; }
th, td { text-align: right; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 14px; }
th { color: var(--muted); font-weight: 600; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 18px; border-bottom: 1px solid var(--border); background: var(--panel);
}
.topbar .brand { font-weight: 700; font-size: 18px; }

footer {
  text-align: center; color: var(--muted); font-size: 12px;
  padding: 14px; border-top: 1px solid var(--border);
}

/* Admin tabbed layout */
.admin-main { max-width: 1150px; }
.admin-layout { display: flex; gap: 18px; align-items: flex-start; }
.sidebar {
  position: sticky; top: 16px; flex: 0 0 210px;
  display: flex; flex-direction: column; gap: 6px;
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 10px;
}
.navbtn {
  text-align: right; width: 100%; cursor: pointer;
  background: transparent; border: 1px solid transparent; color: var(--text);
  padding: 11px 14px; border-radius: 10px; font-weight: 600; font-size: 15px;
}
.navbtn:hover { background: var(--panel-2); }
.navbtn.active { background: rgba(79,140,255,.15); border-color: var(--accent); color: #fff; }
.content { flex: 1; min-width: 0; }
.exambar {
  display: flex; gap: 12px; align-items: flex-end; flex-wrap: wrap;
  background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px;
}
.panel { display: none; }
.panel.active { display: block; }
@media (max-width: 720px) {
  .admin-layout { flex-direction: column; }
  .sidebar { position: static; flex: none; width: 100%; flex-direction: row; flex-wrap: wrap; }
  .navbtn { width: auto; flex: 1 1 auto; }
}

/* Exam */
.q-card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 22px; margin: 16px 0; }
.q-text { font-size: 18px; font-weight: 600; margin-bottom: 16px; }
.opt {
  display: block; padding: 12px 14px; margin: 8px 0; border: 1px solid var(--border);
  border-radius: 10px; cursor: pointer; background: var(--panel-2); transition: .12s;
}
.opt:hover { border-color: var(--accent); }
.opt.selected { border-color: var(--accent); background: rgba(79,140,255,.12); }
.opt input { display: none; }

.timer { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 20px; }
.timer.low { color: var(--danger); }
.banner { padding: 12px 16px; border-radius: 10px; margin: 12px 0; }
.banner.warn { background: rgba(251,191,36,.14); color: var(--warn); border: 1px solid var(--warn); }
.progress { color: var(--muted); font-size: 14px; }
.center { text-align: center; }
.big { font-size: 42px; font-weight: 800; }