:root {
  --teal-900: #0a4540;
  --teal-700: #0f6b63;
  --teal-600: #14837a;
  --teal-500: #1aa093;
  --teal-50: #e9f5f3;
  --gold: #c9a24b;
  --ink: #1f2a28;
  --muted: #6b7b78;
  --line: #e2e8e6;
  --bg: #f6f8f7;
  --card: #ffffff;
  --good: #1f9d57;
  --good-bg: #e7f6ee;
  --bad: #d2453a;
  --bad-bg: #fbeae8;
  --warn: #b87a16;
  --warn-bg: #fbf3e2;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(16,40,37,.05), 0 8px 24px rgba(16,40,37,.06);
}

/* ---------- dark theme ---------- */
[data-theme="dark"] {
  --teal-900: #7fe0d2;   /* headings / strong accents on dark */
  --teal-700: #54cdbd;   /* links */
  --teal-600: #1aa093;
  --teal-500: #1aa093;
  --teal-50:  #15302c;   /* subtle teal surface */
  --gold: #d8b562;
  --ink: #e7efed;
  --muted: #94a6a2;
  --line: #2a3a37;
  --bg: #0d1513;
  --card: #16211e;
  --good: #4ec98a;  --good-bg: #133026;
  --bad:  #f0756a;  --bad-bg:  #34211e;
  --warn: #e0a93c;  --warn-bg: #332a16;
  --shadow: 0 1px 2px rgba(0,0,0,.45), 0 8px 24px rgba(0,0,0,.45);
}
/* keep the header a deep teal (the teal vars are repurposed for text in dark mode) */
[data-theme="dark"] .topbar { background: linear-gradient(135deg, #0f3d39, #07241f); }
[data-theme="dark"] .badge.madhhab { background: #2a2540; color: #c4b5fd; }
[data-theme="dark"] .badge.soft { background: #20302d; color: var(--muted); }
[data-theme="dark"] .content blockquote { background: #221f12; }
[data-theme="dark"] .btn-ghost { background: var(--card); }
[data-theme="dark"] select.field { background: var(--card); color: var(--ink); }
[data-theme="dark"] .madhhab-pick { background: #211d33; border-color: #322a52; }
[data-theme="dark"] .madhhab-pick .lab { color: #c4b5fd; }
[data-theme="dark"] .q-feedback.good { color: #7fe0a8; }
[data-theme="dark"] .q-feedback.bad { color: #f3938a; }
[data-theme="dark"] .q-feedback.unknown { color: #e6c06a; }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Tajawal", system-ui, "Segoe UI", Tahoma, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  transition: background-color .2s ease, color .2s ease;
}
a { color: var(--teal-700); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: linear-gradient(135deg, var(--teal-700), var(--teal-900));
  color: #fff;
  box-shadow: 0 2px 12px rgba(10,69,64,.25);
}
.topbar-inner {
  max-width: 1060px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap;
}
.brand { display: flex; flex-direction: column; line-height: 1.3; }
.brand:hover { text-decoration: none; }
.brand-mark { font-weight: 800; font-size: 22px; color: #fff; letter-spacing: .5px; }
.brand-sub { font-size: 12px; color: #bfe4df; font-weight: 500; }
.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.topnav { display: flex; gap: 6px; flex-wrap: wrap; }
.topnav a {
  color: #d9efec; padding: 7px 14px; border-radius: 999px; font-weight: 500; font-size: 14px;
}
.topnav a:hover { background: rgba(255,255,255,.12); color: #fff; text-decoration: none; }
.topnav a.active { background: #fff; color: var(--teal-700); }
[data-theme="dark"] .topnav a.active { background: #e7efed; color: #0a4540; }

/* dark-mode toggle */
.theme-toggle {
  flex: none; cursor: pointer; width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.25); background: rgba(255,255,255,.1);
  color: #fff; font-size: 17px; line-height: 1; display: grid; place-items: center;
  font-family: inherit; transition: background .15s ease, transform .12s ease;
}
.theme-toggle:hover { background: rgba(255,255,255,.2); }
.theme-toggle:active { transform: scale(.92); }

/* ---------- layout ---------- */
.view { max-width: 1060px; margin: 0 auto; padding: 28px 20px 60px; }
.footer { text-align: center; color: var(--muted); font-size: 12.5px; padding: 24px 20px 40px; }

.page-head { margin-bottom: 22px; }
.page-head h1 { font-size: 26px; margin: 0 0 6px; }
.page-head p { color: var(--muted); margin: 0; }

.crumbs { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.crumbs a { color: var(--muted); }
.crumbs span { margin: 0 6px; }

/* ---------- section blocks ---------- */
.section { margin-bottom: 34px; }
.section-title {
  display: flex; align-items: center; gap: 10px;
  font-size: 19px; font-weight: 800; color: var(--teal-900);
  padding-bottom: 10px; margin-bottom: 16px; border-bottom: 2px solid var(--teal-50);
}
.section-title .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--teal-500); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }

/* ---------- subject card ---------- */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px 18px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 8px;
  transition: transform .12s ease, box-shadow .12s ease; position: relative;
}
a.card:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(16,40,37,.12); }
.card h3 { margin: 0; font-size: 17px; color: var(--ink); }
.card .author { font-size: 13px; color: var(--muted); }
.card .meta { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }

.badge { font-size: 11.5px; font-weight: 700; padding: 3px 9px; border-radius: 999px; white-space: nowrap; }
.badge.ok { background: var(--good-bg); color: var(--good); }
.badge.quiz { background: var(--teal-50); color: var(--teal-700); }
.badge.none { background: var(--warn-bg); color: var(--warn); }
.badge.madhhab { background: #efeaff; color: #6b46c1; }
.badge.soft { background: #eef2f1; color: var(--muted); }

.progress-bar { height: 6px; background: var(--line); border-radius: 999px; overflow: hidden; margin-top: 6px; }
.progress-bar > i { display: block; height: 100%; background: var(--teal-500); border-radius: 999px; }

/* ---------- chapter list ---------- */
.chapter-list { display: flex; flex-direction: column; gap: 10px; }
.chapter-row {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 16px; display: flex; align-items: center; gap: 14px; box-shadow: var(--shadow);
}
a.chapter-row:hover { text-decoration: none; border-color: var(--teal-500); }
.chapter-row .num {
  width: 30px; height: 30px; flex: none; border-radius: 50%; background: var(--teal-50);
  color: var(--teal-700); font-weight: 800; display: grid; place-items: center; font-size: 14px;
}
.chapter-row .grow { flex: 1; min-width: 0; }
.chapter-row .ttl { font-weight: 700; }
.chapter-row .sub { font-size: 12.5px; color: var(--muted); }
.chapter-row .done { color: var(--good); font-weight: 700; font-size: 13px; }

/* ---------- content / summary ---------- */
.content {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 30px; box-shadow: var(--shadow);
}
.content h2 { color: var(--teal-900); font-size: 21px; margin: 28px 0 12px; }
.content h2:first-child { margin-top: 0; }
.content h3 { color: var(--teal-700); font-size: 17px; margin: 22px 0 8px; }
.content p { margin: 0 0 12px; }
.content ul, .content ol { margin: 0 0 14px; padding-right: 22px; }
.content li { margin-bottom: 6px; }
.content blockquote {
  margin: 0 0 14px; padding: 10px 16px; border-right: 4px solid var(--gold);
  background: #fcf9f0; border-radius: 0 10px 10px 0; font-family: "Amiri", serif; font-size: 18px;
}
.content .anchor { scroll-margin-top: 90px; }

.callout {
  border-radius: 14px; padding: 14px 16px; margin: 0 0 16px; font-size: 14.5px;
  display: flex; gap: 10px; align-items: flex-start;
}
.callout.warn { background: var(--warn-bg); color: #7a5210; border: 1px solid #f0dcae; }
.callout.info { background: var(--teal-50); color: var(--teal-900); border: 1px solid #cfe8e4; }
.callout .ic { font-size: 18px; flex: none; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  font-family: inherit; font-weight: 700; font-size: 15px; border: none;
  padding: 11px 22px; border-radius: 12px; transition: filter .12s ease;
}
.btn:hover { text-decoration: none; filter: brightness(1.05); }
.btn-primary { background: var(--teal-600); color: #fff; }
.btn-ghost { background: #fff; color: var(--teal-700); border: 1.5px solid var(--teal-500); }
.btn-soft { background: var(--teal-50); color: var(--teal-700); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }

/* ---------- quiz ---------- */
.quiz-wrap { max-width: 760px; margin: 0 auto; }
.quiz-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.quiz-progress { font-size: 13px; color: var(--muted); }
.q-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px 24px; box-shadow: var(--shadow); margin-bottom: 16px;
}
.q-title { font-weight: 700; font-size: 17px; margin: 0 0 16px; }
.q-num { color: var(--teal-600); font-weight: 800; }
.options { display: flex; flex-direction: column; gap: 10px; }
.opt {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px; cursor: pointer;
  border: 1.5px solid var(--line); border-radius: 12px; transition: border-color .1s, background .1s; font-size: 15px;
}
.opt:hover { border-color: var(--teal-500); }
.opt input { accent-color: var(--teal-600); width: 18px; height: 18px; flex: none; }
.opt.correct { border-color: var(--good); background: var(--good-bg); }
.opt.wrong { border-color: var(--bad); background: var(--bad-bg); }
.opt.disabled { pointer-events: none; }
.opt .tick { margin-inline-start: auto; font-weight: 800; }
.opt.correct .tick { color: var(--good); }
.opt.wrong .tick { color: var(--bad); }

.q-feedback { margin-top: 14px; padding: 12px 16px; border-radius: 12px; font-size: 14.5px; }
.q-feedback.good { background: var(--good-bg); color: #126e3c; }
.q-feedback.bad { background: var(--bad-bg); color: #9a2b22; }
.q-feedback.unknown { background: var(--warn-bg); color: #7a5210; }
.q-feedback a { font-weight: 700; }

.score-card {
  text-align: center; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow);
}
.score-ring { font-size: 44px; font-weight: 800; color: var(--teal-700); }
.score-card p { color: var(--muted); margin: 6px 0 0; }

/* ---------- empty / placeholder ---------- */
.empty {
  text-align: center; padding: 40px 24px; color: var(--muted);
  background: var(--card); border: 1px dashed var(--line); border-radius: var(--radius);
}
.empty .big { font-size: 40px; margin-bottom: 8px; }

/* ---------- settings ---------- */
.toggle-row {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); margin-bottom: 8px;
}
.switch { position: relative; width: 46px; height: 26px; flex: none; }
.switch input { display: none; }
.switch .track { position: absolute; inset: 0; background: var(--line); border-radius: 999px; transition: background .15s; cursor: pointer; }
.switch .track::before { content: ""; position: absolute; top: 3px; right: 3px; width: 20px; height: 20px; background: #fff; border-radius: 50%; transition: transform .15s; box-shadow: 0 1px 3px rgba(0,0,0,.2); }
.switch input:checked + .track { background: var(--teal-500); }
.switch input:checked + .track::before { transform: translateX(-20px); }

select.field {
  font-family: inherit; font-size: 15px; padding: 9px 14px; border-radius: 10px;
  border: 1.5px solid var(--teal-500); background: #fff; color: var(--ink); cursor: pointer;
}

.madhhab-pick { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; background: #efeaff; border: 1px solid #ddd2fb; padding: 12px 16px; border-radius: 14px; margin-bottom: 18px; }
.madhhab-pick .lab { font-weight: 700; color: #5b3fb0; }

@media (max-width: 560px) {
  .content { padding: 20px 18px; }
  .page-head h1 { font-size: 22px; }
  .topbar-inner { padding: 10px 14px; gap: 8px; }
  .brand-sub { display: none; }
  .brand-mark { font-size: 19px; }
  /* keep the nav on one compact row; scroll sideways instead of wrapping to a tall header */
  .topbar-right { width: 100%; gap: 8px; flex-wrap: nowrap; }
  .topnav {
    flex: 1; min-width: 0; gap: 4px; flex-wrap: nowrap;
    overflow-x: auto; -ms-overflow-style: none; scrollbar-width: none;
  }
  .topnav::-webkit-scrollbar { display: none; }
  .topnav a { padding: 6px 11px; font-size: 13px; white-space: nowrap; }
}