:root {
  --bg: #f6f8f7; --card: #ffffff; --ink: #14201f; --muted: #5b6b69; --line: #dce4e2;
  --brand: #0f766e; --brand-ink: #ffffff; --soft: #e6f3f1; --good: #15803d; --bad: #b91c1c;
  --warn: #b45309; --chip: #eef2f1; --shadow: 0 1px 3px rgba(0,0,0,.08);
  --radius: 14px; --gut: 16px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0b1414; --card: #132120; --ink: #e6efee; --muted: #9db0ad; --line: #243634;
    --brand: #2dd4bf; --brand-ink: #062322; --soft: #10302d; --good: #4ade80; --bad: #f87171;
    --warn: #fbbf24; --chip: #1b2d2b; --shadow: none;
  }
}
:root[data-theme="dark"] {
  --bg: #0b1414; --card: #132120; --ink: #e6efee; --muted: #9db0ad; --line: #243634;
  --brand: #2dd4bf; --brand-ink: #062322; --soft: #10302d; --good: #4ade80; --bad: #f87171;
  --warn: #fbbf24; --chip: #1b2d2b; --shadow: none;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body {
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans Arabic", sans-serif;
  padding: env(safe-area-inset-top) 0 calc(64px + env(safe-area-inset-bottom));
  overflow-x: hidden; -webkit-text-size-adjust: 100%;
}
a { color: var(--brand); }
.top {
  position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 8px;
  padding: 10px var(--gut); background: var(--bg); border-bottom: 1px solid var(--line);
}
.brand { font-weight: 800; letter-spacing: .08em; text-decoration: none; color: var(--brand); }
.sync { margin-left: auto; font-size: 13px; color: var(--muted); }
main { max-width: 720px; margin: 0 auto; padding: var(--gut); outline: none; }
.tabs {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 5; display: flex;
  background: var(--card); border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}
.tabs a {
  flex: 1; text-align: center; padding: 6px 0 8px; font-size: 12px; color: var(--muted);
  text-decoration: none; display: flex; flex-direction: column; align-items: center;
}
.tabs a span { font-size: 20px; line-height: 1.3; }
.tabs a.on { color: var(--brand); font-weight: 700; }
h1 { font-size: 22px; margin: 4px 0 12px; }
h2 { font-size: 18px; margin: 18px 0 8px; }
h3 { font-size: 16px; margin: 14px 0 6px; }
.muted { color: var(--muted); }
.pad { padding: var(--gut); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; margin: 10px 0; box-shadow: var(--shadow); overflow-wrap: anywhere;
}
.card.tap { cursor: pointer; }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.grow { flex: 1; }
.btn {
  appearance: none; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  border-radius: 12px; padding: 12px 14px; font: inherit; font-weight: 600; cursor: pointer;
  min-height: 44px; touch-action: manipulation;
}
a.btn, a.chip { text-decoration: none; display: inline-block; }
a.btn.block { display: block; }
.btn.primary { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.btn.good { border-color: var(--good); color: var(--good); }
.btn.bad { border-color: var(--bad); color: var(--bad); }
.btn.block { display: block; width: 100%; text-align: left; margin: 8px 0; font-weight: 500; }
.btn.sel { outline: 3px solid var(--brand); }
.btn:disabled { opacity: .45; cursor: default; }
.rate { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 12px; }
.chips { display: flex; gap: 6px; overflow-x: auto; padding: 2px 0 8px; scrollbar-width: none; }
.chip {
  border: 1px solid var(--line); background: var(--chip); color: var(--ink); border-radius: 999px;
  padding: 6px 12px; font: inherit; font-size: 14px; white-space: nowrap; cursor: pointer;
}
.chip.on { background: var(--brand); color: var(--brand-ink); border-color: var(--brand); }
.badge {
  display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 999px;
  background: var(--chip); color: var(--muted); margin: 2px 4px 2px 0;
}
.badge.warn { color: var(--warn); }
.badge.good { color: var(--good); }
.bar { height: 8px; border-radius: 99px; background: var(--chip); overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--brand); }
.stat { font-size: 28px; font-weight: 800; }
.grid2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.heat { display: grid; grid-template-columns: repeat(12, 1fr); gap: 3px; }
.heat i { aspect-ratio: 1; border-radius: 3px; background: var(--chip); }
.heat i.on { background: var(--brand); }
.heat i.fz { background: #60a5fa; }
.lesson table, .card table { border-collapse: collapse; width: 100%; font-size: 14px; display: block; overflow-x: auto; }
.card th { white-space: nowrap; }
.lesson th, .lesson td, .card th, .card td { border: 1px solid var(--line); padding: 4px 6px; text-align: start; vertical-align: top; }
.lesson details { background: var(--soft); border-radius: 10px; padding: 6px 10px; margin: 6px 0; }
.lesson summary { cursor: pointer; font-weight: 600; }
.rtl, [dir="rtl"] { direction: rtl; text-align: right; }
.feedback { border-left: 4px solid var(--brand); padding-left: 10px; margin-top: 12px; }
.feedback.bad { border-color: var(--bad); }
.feedback.good { border-color: var(--good); }
.nav-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin: 10px 0; }
.nav-grid button { min-height: 40px; }
.nav-grid .done { background: var(--soft); }
.nav-grid .flag { border-color: var(--warn); color: var(--warn); }
.timer { font-variant-numeric: tabular-nums; font-weight: 700; }
.tl { border-left: 3px solid var(--line); margin-left: 8px; padding-left: 14px; }
.tl .card { position: relative; }
.tl .card::before {
  content: ""; position: absolute; left: -23px; top: 18px; width: 12px; height: 12px;
  border-radius: 50%; background: var(--brand);
}
.order-picked li { margin: 4px 0; }
input[type=text], input[type=url], input[type=password], input[type=search], textarea, select {
  width: 100%; font: inherit; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink);
}
textarea { min-height: 100px; }
label { display: block; margin: 10px 0 4px; font-weight: 600; }
.toast {
  position: fixed; left: 50%; bottom: calc(76px + env(safe-area-inset-bottom)); transform: translateX(-50%);
  background: var(--ink); color: var(--bg); padding: 8px 14px; border-radius: 99px; font-size: 14px;
  z-index: 9; max-width: calc(100% - 32px);
}