/* ════════════════════════════════════════
   LITERATURE PAGE STYLES
   ════════════════════════════════════════ */

.literature-layout {
  width: 100%;
  max-width: none;
  margin: 0 auto;
  padding: var(--space-16) clamp(40px, 4.6vw, 84px) var(--space-20);
  box-sizing: border-box;
}

.literature-header {
  padding: var(--space-12) 0 var(--space-8);
  border-bottom: 1px solid var(--line);
}

.literature-header h1 {
  max-width: none;
  margin-top: var(--space-4);
  font-size: clamp(2.2rem, 6vw, 4rem);
  letter-spacing: 0;
}

.literature-lead {
  max-width: none;
  margin-top: var(--space-4);
  color: var(--ink-2);
  font-size: 1rem;
  line-height: 1.72;
}

.ai-note {
  margin: var(--space-7) 0 0;
  padding: var(--space-5) var(--space-6);
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: start;
  border: 1px solid var(--line-strong);
  border-radius: 3px;
  background: color-mix(in srgb, var(--accent) 5%, var(--surface));
  box-shadow: var(--shadow-sm);
}

.ai-note-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-sm);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  color: var(--accent);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.ai-note h2 {
  margin-bottom: var(--space-2);
  font-family: "Inter", system-ui, sans-serif;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.ai-note p {
  color: var(--ink-2);
  line-height: 1.68;
}

.literature-list {
  margin: var(--space-8) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: literature;
  display: grid;
  gap: var(--space-3);
}

.literature-list li {
  counter-increment: literature;
  position: relative;
  padding: var(--space-5) var(--space-6) var(--space-5) 72px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink-2);
  line-height: 1.68;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}

.literature-list li:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-md);
}

.literature-list li::before {
  content: counter(literature, decimal-leading-zero);
  font-family: "Inter", system-ui, sans-serif;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  position: absolute;
  top: var(--space-5);
  left: var(--space-6);
}

.literature-list a {
  color: var(--accent);
  overflow-wrap: anywhere;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.literature-list a:hover {
  text-decoration-thickness: 2px;
}

/* ── DESKTOP TWO-COLUMN LAYOUT ── */
@media (min-width: 900px) {
  .literature-list {
    grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
    gap: var(--space-4);
  }
}

/* ── RESPONSIVE ── */
@media (max-width: 560px) {
  .literature-layout { padding: var(--space-10) var(--space-4) var(--space-12); }
  .literature-header { padding-top: var(--space-7); }
  .ai-note {
    grid-template-columns: 1fr;
    padding: var(--space-4);
  }
  .literature-list li { padding: 44px var(--space-5) var(--space-5); }
  .literature-list li::before { top: var(--space-4); left: var(--space-5); }
}

/* ── DARK MODE OVERRIDES ── */
@media (prefers-color-scheme: dark) {
  .ai-note-mark { background: color-mix(in srgb, var(--accent) 15%, transparent); }
}