/* ═══════════════════════════════════════════
   Eksamensdatabasen — Samfundsfag A (STX)
   Split-pane desktop / Stacked cards mobile
   ═══════════════════════════════════════════ */

/* ─── Reset ─── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

/* ─── Tokens ─── */
:root {
  color-scheme: light;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-s: 0.5rem;
  --space-m: 1rem;
  --space-l: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Typografi (fluid) */
  --step--2: clamp(0.65rem, 0.6rem + 0.2vw, 0.75rem);
  --step--1: clamp(0.8rem, 0.75rem + 0.25vw, 0.875rem);
  --step-0: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
  --step-1: clamp(1.1rem, 0.95rem + 0.5vw, 1.3rem);
  --step-2: clamp(1.4rem, 1.1rem + 0.9vw, 1.8rem);
  --step-3: clamp(1.8rem, 1.2rem + 1.8vw, 2.8rem);

  /* Radius */
  --radius-s: 0.5rem;
  --radius-m: 0.75rem;
  --radius-l: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-s: 0 1px 3px oklch(0 0 0 / 4%), 0 1px 2px oklch(0 0 0 / 3%);
  --shadow-m: 0 4px 12px oklch(0 0 0 / 6%), 0 2px 4px oklch(0 0 0 / 4%);
  --shadow-hover: 0 8px 24px oklch(0 0 0 / 10%), 0 2px 8px oklch(0 0 0 / 5%);

  /* Accent — Bordeaux */
  --accent: oklch(0.42 0.14 25);
  --accent-soft: oklch(0.52 0.10 25);
  --accent-mid: oklch(0.45 0.10 25);
  --accent-bg: light-dark(oklch(0.42 0.14 25 / 6%), oklch(0.42 0.14 25 / 15%));
  --accent-light: light-dark(oklch(0.42 0.14 25 / 10%), oklch(0.42 0.14 25 / 20%));

  /* Semantiske farver */
  --bg: light-dark(oklch(0.97 0.008 240), oklch(0.14 0.02 260));
  --card: light-dark(oklch(1 0 0), oklch(0.20 0.02 260));
  --border: light-dark(oklch(0.88 0.01 260), oklch(0.30 0.02 260));
  --text: light-dark(oklch(0.15 0.02 260), oklch(0.93 0.01 80));
  --muted: light-dark(oklch(0.50 0.02 260), oklch(0.65 0.01 260));
  --input-bg: light-dark(oklch(1 0 0), oklch(0.22 0.02 260));
  --highlight: light-dark(oklch(0.92 0.12 95), oklch(0.45 0.12 95));

  /* Pane widths */
  --list-width: 420px;
}

/* ─── Base ─── */
html, body {
  block-size: 100%;
  overflow: hidden;
}

body {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}


/* ════════════════════════════════════════════
   DESKTOP LAYOUT (split-pane, > 900px)
   ════════════════════════════════════════════ */

.app {
  display: flex;
  block-size: 100vh;
  block-size: 100dvh;
}

/* ─── Left pane ─── */
.list-pane {
  inline-size: var(--list-width);
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  block-size: 100%;
  background: var(--card);
  border-inline-end: none;
  box-shadow: 4px 0 16px oklch(0 0 0 / 6%);
  z-index: 1;
}

.list-top {
  background: var(--accent);
  color: oklch(1 0 0);
  padding-block: var(--space-l) 0.75rem;
  padding-inline: 1.75rem;
  flex-shrink: 0;
}

.list-header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-block-end: 0.75rem;

  & h1 {
    font-size: var(--step-1);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: oklch(1 0 0);
  }

  & span {
    font-size: var(--step--2);
    opacity: 0.65;
  }
}

.search-input {
  inline-size: 100%;
  padding-block: 0.55rem;
  padding-inline: 0.75rem;
  border: none;
  border-radius: var(--radius-s);
  font-family: inherit;
  font-size: var(--step--1);
  background: light-dark(oklch(1 0 0 / 92%), oklch(0.15 0.015 260 / 90%));
  color: var(--text);

  &::placeholder { color: light-dark(oklch(0.50 0 0), oklch(1 0 0 / 55%)); }
  &:focus {
    outline: none;
  }
}

/* Meta-linje under søgning */
.search-meta {
  display: flex;
  justify-content: space-between;
  font-size: var(--step--2);
  color: oklch(1 0 0 / 55%);
  padding-block-start: 0.35rem;
}

/* ─── Liste-scroll ─── */
.list-scroll {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
}

/* ─── List-items ─── */
.list-item {
  padding-block: 0.85rem;
  padding-inline: 1.75rem;
  border-block-end: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.1rem;

  @media (hover: hover) {
    &:hover {
      background: var(--accent-bg);
    }
  }

  &.selected {
    background: var(--accent-bg);
    border-inline-start: 3px solid var(--accent);
    padding-inline-start: calc(1.75rem - 3px);
  }
}

/* Desktop: card-header er bare en usynlig wrapper */
.card-header {
  display: contents;
}

.item-tema {
  font-size: var(--step-0);
  font-weight: 700;
}

.item-meta {
  font-size: var(--step--2);
  color: var(--muted);
}

.item-bottom {
  display: flex;
  align-items: center;
  gap: var(--space-s);
  margin-block-start: 0.15rem;
}

.type-tag {
  font-size: var(--step--2);
  font-weight: 700;
  color: var(--accent-soft);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.rv-tag {
  font-size: var(--step--2);
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-bg);
  padding-block: 0.1rem;
  padding-inline: 0.35rem;
  border-radius: var(--radius-s);
}

/* ─── Right pane (detail) ─── */
.detail-pane {
  flex: 1;
  overflow-y: auto;
  background: var(--card);
  block-size: 100%;
}

.detail-inner {
  padding-block: 2rem 2.5rem;
  padding-inline: 2.5rem;
}

.detail-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  block-size: 100%;
  color: var(--muted);
  font-size: var(--step-0);
}

/* ─── Detail sections (matcher mockup-h1c) ─── */
.section-label {
  font-size: var(--step--2);
  font-weight: 700;
  color: var(--accent-mid);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-block-end: var(--space-s);
}

/* Spørgsmål */
.sp-section {
  margin-block-end: var(--space-xl);
}

.q-block {
  padding-block-end: 0.85rem;
  margin-block-end: 0.85rem;

  &:last-child { margin: 0; padding: 0; }
}

.q-nr {
  font-size: var(--step-0);
  font-weight: 800;
  color: var(--accent);
  margin-inline-end: 0.25rem;
}

.q-text {
  font-size: var(--step-0);
  line-height: 1.6;
}

/* Anvendt viden */
.viden-section {
  margin-block-end: var(--space-xl);
}

.viden-text {
  font-size: var(--step-0);
  line-height: 1.6;
}

/* Bilag */
.bilag-section {
  margin-block-end: var(--space-xl);
}

.bilag-row {
  display: flex;
  align-items: baseline;
  gap: var(--space-s);
  padding-block: 0.45rem;
  font-size: var(--step-0);
}

.bilag-nr {
  font-weight: 800;
  color: var(--accent);
  font-size: var(--step--2);
}

.bilag-kilde {
  color: var(--muted);
  font-size: var(--step--1);
}

/* Download-knapper */
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
  margin-block-start: var(--space-l);
}

.btn-hent {
  display: inline-flex;
  gap: 0.3rem;
  padding-block: 0.55rem;
  padding-inline: 1.1rem;
  background: var(--accent);
  color: oklch(1 0 0);
  border: none;
  border-radius: var(--radius-s);
  font-family: inherit;
  font-size: var(--step--1);
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;

  &:hover { opacity: 0.9; }
  &:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
}

.btn-hent--rv {
  background: var(--accent-soft);
}


/* ─── Highlight ─── */
mark {
  background: var(--highlight);
  padding-inline: 1px;
  border-radius: 2px;
  color: inherit;
}

/* ─── Empty state ─── */
.empty-state {
  text-align: center;
  padding-block: var(--space-2xl);
  color: var(--muted);

  & .big { font-size: var(--step-3); margin-block-end: var(--space-s); }
  & p { font-size: var(--step-0); }
}


/* ════════════════════════════════════════════
   MOBILE LAYOUT (< 900px): Stacked cards
   ════════════════════════════════════════════ */

/* Hide mobile-only elements on desktop */
.mobile-card-body { display: none; }
.card-chevron { display: none; }

@media (max-width: 900px) {
  html, body {
    overflow: auto;
    block-size: auto;
  }

  .app {
    display: block;
    block-size: auto;
  }

  /* Hide the detail pane entirely on mobile */
  .detail-pane { display: none; }

  /* Left pane becomes full-width header + card list */
  .list-pane {
    inline-size: 100%;
    block-size: auto;
    border-inline-end: none;
    background: var(--card);
    display: flex;
    flex-direction: column;
  }

  .list-top {
    position: sticky;
    inset-block-start: 0;
    z-index: 10;
    padding-block: var(--space-m) var(--space-s);
    padding-inline: var(--space-m);

    & h1 {
      font-size: var(--step-0);
      margin-block-end: var(--space-s);
    }
  }

  .search-box {
    margin-block-end: var(--space-xs);
  }

  .filters {
    gap: var(--space-xs);
  }

  .list-meta {
    margin-block-start: var(--space-xs);
    font-size: var(--step--2);
  }

  /* Card list becomes stacked cards */
  .list-scroll {
    padding-inline: var(--space-m);
    padding-block: var(--space-s);
    overflow: visible;
  }

  .list-item {
    background: var(--card);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-s);
    margin-block-end: var(--space-s);
    border-block-end: none;
    padding: 0;
    position: relative;
    -webkit-tap-highlight-color: transparent;

    &.selected {
      border-inline-start: none;
      background: var(--card);
    }

    & .card-header {
      padding-block: var(--space-m);
      padding-inline: var(--space-m);
      border-radius: var(--radius-m);
      display: flex;
      flex-direction: column;
      gap: 0.1rem;
      position: relative;
    }

    &.open .card-header {
      background: var(--accent-bg);
      border-radius: var(--radius-m) var(--radius-m) 0 0;
    }
  }

  /* Show card chevron on mobile */
  .card-chevron {
    display: inline-block;
    position: absolute;
    inset-block-start: var(--space-m);
    inset-inline-end: var(--space-m);
    font-size: var(--step--1);
    color: var(--muted);
    transition: transform 0.2s ease;
  }

  .list-item.open .card-chevron {
    transform: rotate(90deg);
  }

  /* Show inline card body on mobile when open */
  .mobile-card-body {
    display: none;
    padding-block: var(--space-m);
    padding-inline: var(--space-m);
    border-block-start: none;
  }

  .list-item.open .mobile-card-body {
    display: block;
  }


  /* Footer on mobile */
  .mobile-footer {
    display: block;
  }
}

/* Hide mobile footer on desktop */
.mobile-footer {
  display: none;
  text-align: center;
  padding-block: var(--space-xl);
  color: var(--muted);
  font-size: var(--step--1);
}

@media (max-width: 900px) {
  .mobile-footer { display: block; }
}

/* ─── Tilgængelighed ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

@media (prefers-contrast: more) {
  .list-item {
    box-shadow: 0 0 0 2px var(--text);
  }
}

/* ─── Print ─── */
@media print {
  .list-top, .card-chevron, .fav-btn { display: none !important; }
  .mobile-card-body { display: block !important; }
  .detail-pane { display: none !important; }
  .list-pane { inline-size: 100% !important; block-size: auto !important; }
  .list-scroll { overflow: visible !important; }
  .list-item { break-inside: avoid; box-shadow: none; border: 1px solid oklch(0.80 0 0); }
  body, html { overflow: visible; block-size: auto; }
}

/* ─── Scrollbar styling ─── */
.list-scroll, .detail-pane {
  scrollbar-width: thin;
  scrollbar-color: transparent transparent;
  transition: scrollbar-color 0.3s;

  &:hover {
    scrollbar-color: oklch(0.42 0.14 25 / 35%) transparent;
  }
}