/* ISC213 — Islamic Financial Transactions.
   Shared stylesheet for the hand-written study pages (cheat sheets, mindmap,
   practice exams). Tokens match the lecture slide-breakdown pages so the whole
   course reads as one design; light is the base, dark overrides on
   html[data-theme="dark"] only. No !important — see docs/styles/README notes on
   the standalone page pattern. */

:root {
  --bg: #F6F1E4;
  --bg-panel: #FFFDF7;
  --ink: #1E2B22;
  --ink-soft: #4A5A4F;
  --line: #D8CFB4;
  --emerald: #16423C;
  --emerald-soft: #E4EDE7;
  --gold: #A9791E;
  --gold-bright: #C99A2E;
  --card-shadow: 0 1px 0 rgba(30, 43, 34, 0.06);
  --quiz-correct: #2E6B4F;
  --quiz-wrong: #A5432E;
  --violet: #7A6A9B;
  --pattern-opacity: 0.05;
}

html[data-theme="dark"] {
  --bg: #10201B;
  --bg-panel: #16281F;
  --ink: #EDE6D3;
  --ink-soft: #B7C2B4;
  --line: #2C3F32;
  --emerald: #7FC9AE;
  --emerald-soft: #1B3128;
  --gold: #E0B84C;
  --gold-bright: #F0CB6A;
  --card-shadow: 0 1px 0 rgba(0, 0, 0, 0.3);
  --quiz-correct: #6FBE96;
  --quiz-wrong: #E08067;
  --violet: #AC9BD0;
  --pattern-opacity: 0.08;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: 'Inter', sans-serif;
  line-height: 1.55;
  transition: background 0.3s ease, color 0.3s ease;
}

h1,
h2,
h3,
.display {
  font-family: 'Fraunces', serif;
}

.arabic {
  font-family: 'Amiri', serif;
  direction: rtl;
}

.motif-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, var(--gold) 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: var(--pattern-opacity);
}

/* ---------- Top bar ---------- */
header.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--line);
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  backdrop-filter: blur(6px);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand .mark {
  color: var(--gold);
  font-size: 1.3rem;
}

.brand-text {
  font-family: 'Fraunces', serif;
  font-weight: 600;
  font-size: 1.05rem;
}

.brand-sub {
  color: var(--ink-soft);
  font-size: 0.8rem;
}

.bar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

#themeToggle,
.pill-btn {
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 14px;
  font-family: 'Inter', sans-serif;
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.2s, transform 0.15s;
}

#themeToggle:hover,
.pill-btn:hover {
  background: var(--emerald-soft);
}

#themeToggle:active,
.pill-btn:active {
  transform: scale(0.96);
}

/* ---------- Hero ---------- */
.hero {
  max-width: 980px;
  margin: 0 auto;
  padding: 56px 24px 32px;
}

.hero .bismillah {
  color: var(--gold);
  font-size: 1.1rem;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.9rem);
  line-height: 1.12;
  margin: 0 0 10px;
  font-weight: 600;
}

.hero p.lede {
  color: var(--ink-soft);
  font-size: 1.05rem;
  max-width: 680px;
}

.hero-meta {
  display: flex;
  gap: 22px;
  margin-top: 22px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.hero-meta strong {
  color: var(--ink);
  font-family: 'Fraunces', serif;
  font-size: 1.15rem;
  display: block;
}

/* ---------- Table of contents ---------- */
nav.toc {
  max-width: 980px;
  margin: 0 auto 40px;
  padding: 0 24px;
}

nav.toc .toc-inner {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 18px 20px;
}

nav.toc .toc-label {
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--gold);
  margin-bottom: 10px;
  font-weight: 600;
}

nav.toc ol {
  columns: 2;
  column-gap: 24px;
  margin: 0;
  padding-left: 18px;
  font-size: 0.88rem;
}

nav.toc li {
  margin-bottom: 6px;
  break-inside: avoid;
}

nav.toc a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px dotted var(--line);
}

nav.toc a:hover {
  color: var(--gold);
}

/* ---------- Sections ---------- */
main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

section.slide {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 30px 32px;
  margin-bottom: 22px;
  box-shadow: var(--card-shadow);
  scroll-margin-top: 90px;
}

.slide-tag {
  font-size: 0.72rem;
  color: var(--gold);
  font-weight: 600;
  letter-spacing: 0.03em;
  margin-bottom: 6px;
  text-transform: uppercase;
}

section.slide h2 {
  font-size: 1.5rem;
  margin: 0 0 14px;
  font-weight: 600;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

section.slide h2 .num {
  color: var(--gold);
  font-size: 1rem;
  font-family: 'Inter', sans-serif;
  font-weight: 700;
}

section.slide h3 {
  font-size: 1.05rem;
  margin: 20px 0 8px;
  font-weight: 600;
  color: var(--emerald);
}

section.slide p {
  margin: 0 0 12px;
}

section.slide ul,
section.slide ol {
  margin: 0 0 12px;
  padding-left: 20px;
}

section.slide li {
  margin-bottom: 6px;
}

/* ---------- Callouts ---------- */
.callout {
  border-radius: 8px;
  padding: 14px 16px;
  margin: 14px 0;
  font-size: 0.92rem;
  border-left: 3px solid var(--gold);
  background: var(--emerald-soft);
}

.callout .callout-label {
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 6px;
  color: var(--gold);
}

.callout.mnemonic {
  border-left-color: var(--emerald);
}

.callout.mnemonic .callout-label {
  color: var(--emerald);
}

.callout.mistake {
  border-left-color: var(--quiz-wrong);
}

.callout.mistake .callout-label {
  color: var(--quiz-wrong);
}

.callout.evidence {
  border-left-color: var(--violet);
}

.callout.evidence .callout-label {
  color: var(--violet);
}

.quote {
  font-family: 'Fraunces', serif;
  font-style: italic;
  font-size: 1.02rem;
  padding: 10px 0 10px 16px;
  border-left: 2px solid var(--gold);
  margin: 10px 0;
}

.quote cite {
  display: block;
  font-family: 'Inter', sans-serif;
  font-style: normal;
  font-size: 0.78rem;
  color: var(--ink-soft);
  margin-top: 4px;
}

.term-row {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 4px 16px;
  padding: 8px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 0.92rem;
}

.term-row:last-child {
  border-bottom: none;
}

.term-row .term {
  font-weight: 600;
  color: var(--emerald);
}

/* ---------- Cheat-sheet cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
  margin: 14px 0;
}

.mini-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px 16px;
  background: var(--bg);
  font-size: 0.9rem;
}

.mini-card .mini-title {
  font-weight: 700;
  color: var(--emerald);
  margin-bottom: 6px;
  font-size: 0.95rem;
}

.mini-card .mini-key {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 8px;
}

.rule-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 12px 0;
}

.rule-table th,
.rule-table td {
  border: 1px solid var(--line);
  padding: 9px 11px;
  text-align: left;
  vertical-align: top;
}

.rule-table th {
  background: var(--emerald-soft);
  color: var(--emerald);
  font-weight: 700;
}

.rule-table caption {
  caption-side: top;
  text-align: left;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gold);
  padding-bottom: 6px;
}

.table-scroll {
  overflow-x: auto;
}

.verdict {
  display: inline-block;
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.verdict.halal {
  background: var(--quiz-correct);
  color: #fff;
}

.verdict.haram {
  background: var(--quiz-wrong);
  color: #fff;
}

.verdict.mixed {
  background: var(--gold);
  color: #fff;
}

/* ---------- Flashcards ---------- */
.flash-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 10px;
}

.flash {
  perspective: 1000px;
  height: 118px;
  cursor: pointer;
}

.flash-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.5s;
  transform-style: preserve-3d;
}

.flash.flipped .flash-inner {
  transform: rotateY(180deg);
}

.flash-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  font-size: 0.85rem;
}

.flash-front {
  background: var(--emerald-soft);
  font-weight: 600;
  color: var(--emerald);
}

.flash-back {
  background: var(--bg-panel);
  transform: rotateY(180deg);
  color: var(--ink);
}

/* ---------- Quiz / exam ---------- */
.quiz-q {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 14px;
  background: var(--bg);
  scroll-margin-top: 90px;
}

.quiz-q p.q-text {
  font-weight: 600;
  margin: 0 0 10px;
}

.quiz-q .q-src {
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px;
}

.quiz-opts {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-opt {
  text-align: left;
  border: 1px solid var(--line);
  background: var(--bg-panel);
  color: var(--ink);
  border-radius: 8px;
  padding: 9px 12px;
  cursor: pointer;
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  transition: background 0.15s, border-color 0.15s;
}

.quiz-opt:hover {
  border-color: var(--gold);
}

.quiz-opt.correct {
  background: var(--quiz-correct);
  border-color: var(--quiz-correct);
  color: #fff;
}

.quiz-opt.wrong {
  background: var(--quiz-wrong);
  border-color: var(--quiz-wrong);
  color: #fff;
}

.quiz-opt[disabled] {
  cursor: default;
}

.quiz-feedback {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--ink-soft);
  display: none;
}

.written-q {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 16px 18px;
  margin-bottom: 14px;
  background: var(--bg);
}

.written-q .q-text {
  font-weight: 600;
  margin: 0 0 10px;
}

.written-q .model-answer {
  border-top: 1px dashed var(--line);
  margin-top: 10px;
  padding-top: 10px;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

.written-q summary {
  cursor: pointer;
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

#scoreBar {
  position: sticky;
  bottom: 16px;
  margin: 16px auto 0;
  max-width: 320px;
  background: var(--emerald);
  color: var(--bg-panel);
  text-align: center;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* ---------- Mindmap ---------- */
.map-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
}

.map-branch {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--bg-panel);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}

.map-branch>summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 20px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-family: 'Fraunces', serif;
  font-size: 1.2rem;
  font-weight: 600;
}

.map-branch>summary::-webkit-details-marker {
  display: none;
}

.map-branch>summary::before {
  content: '+';
  color: var(--gold);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  width: 1ch;
}

.map-branch[open]>summary::before {
  content: '\2212';
}

.map-branch>summary .branch-num {
  color: var(--gold);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
}

.map-branch>summary .branch-count {
  margin-left: auto;
  font-family: 'Inter', sans-serif;
  font-size: 0.75rem;
  color: var(--ink-soft);
  font-weight: 400;
}

.map-body {
  padding: 0 20px 20px;
}

.node-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 6px;
}

.node-list .node {
  position: relative;
  padding: 8px 0 8px 20px;
  border-left: 1px solid var(--line);
}

.node-list .node::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 12px;
  height: 1px;
  background: var(--line);
}

.node-list .node>.node-label {
  font-weight: 600;
  color: var(--emerald);
}

.node-list .node>.node-note {
  display: block;
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.node-list .node-list {
  margin-top: 4px;
}

.map-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 8px;
}

.map-legend span::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  margin-right: 6px;
  vertical-align: baseline;
}

.map-legend .lg-halal::before {
  background: var(--quiz-correct);
}

.map-legend .lg-haram::before {
  background: var(--quiz-wrong);
}

.map-legend .lg-mixed::before {
  background: var(--gold);
}

footer {
  text-align: center;
  padding: 30px 24px 60px;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

@media (max-width: 600px) {
  section.slide {
    padding: 22px 18px;
  }

  nav.toc ol {
    columns: 1;
  }

  .term-row {
    grid-template-columns: 1fr;
  }

  header.topbar {
    flex-wrap: wrap;
  }
}

@media print {

  header.topbar,
  .map-controls,
  #scoreBar,
  .bar-actions {
    display: none;
  }

  body {
    background: #fff;
  }

  section.slide,
  .map-branch {
    break-inside: avoid;
    box-shadow: none;
  }

  .map-body {
    display: block;
  }
}