/* ==========================================================================
   இன்னா நாற்பது · Iṉṉā Nāṟpatu — Deep Crimson & Thorn-Ash Theme
   40 ethical quatrains on what is painful · c. 1st–5th century CE
   Author: Kaḷḷāṭaṉār · Patiṉeṇkīḻkaṇakku collection

   Visual identity: The word iṉṉā (இன்னா) means "painful, harmful, unpleasant."
   These forty verses are Tamil ethical poetry at its most direct — a catalogue
   of what causes suffering, shame, and ruin. The tone is sharper than Nālaṭiyār,
   more satirical, with an edge of social critique.

   Palette: deep crimson (the sting of the unpleasant), ash-grey (what is left
   after ruin), thorn-brown (the sharp dry shrub — harmless-looking, painful to
   touch), with warm manuscript-ochre as accent.

   The mark: a thorn — a single sharp diagonal stroke with two small lateral
   spines. Simple, direct, uncomfortable. The shape of iṉṉā itself.
   ========================================================================== */

:root {
  /* ── Deep crimson (primary) ─────────────────────────── */
  --in-crimson:       #8a1a1a;
  --in-crimson-mid:   #6a1212;
  --in-crimson-bright:#b02828;
  --in-crimson-pale:  rgba(138, 26, 26, 0.10);
  --in-crimson-pale2: rgba(138, 26, 26, 0.05);

  /* ── Ash (secondary) ────────────────────────────────── */
  --in-ash:           #7a7270;
  --in-ash-mid:       #5a5250;
  --in-ash-pale:      rgba(122, 114, 112, 0.14);
  --in-ash-pale2:     rgba(122, 114, 112, 0.07);

  /* ── Thorn-brown (accent) ───────────────────────────── */
  --in-thorn:         #6a4018;
  --in-thorn-mid:     #8a5820;
  --in-thorn-pale:    rgba(106, 64, 24, 0.10);

  /* ── Warm ochre (verse numbers / highlights) ────────── */
  --in-ochre:         #b87820;
  --in-ochre-pale:    rgba(184, 120, 32, 0.12);

  /* ── Parchment base ─────────────────────────────────── */
  --in-parchment:     #ede0cc;
  --in-parchment-dark:#d8c8b0;

  /* ── Site overrides ─────────────────────────────────── */
  --accent-vermillion: var(--in-crimson);
  --accent-kumkum:     var(--in-crimson-mid);
  --accent-ochre:      var(--in-thorn);
  --accent-gold:       var(--in-ochre);
}

/* Body background: aged parchment with faint thorn-scratch texture */
body { background: #c8b8a8; }
body::before {
  background-image:
    repeating-linear-gradient(
      -30deg,
      transparent 0px, transparent 18px,
      rgba(138,26,26,0.018) 18px, rgba(138,26,26,0.018) 19px
    ),
    repeating-linear-gradient(
      0deg,
      transparent 0px, transparent 4px,
      rgba(106,64,24,0.012) 4px, rgba(106,64,24,0.012) 5px
    );
}

/* Header */
.site-header { border-bottom-color: rgba(138,26,26,0.22); }
.site-logo .mark { color: var(--in-crimson); }
.wordmark-tamil { color: var(--in-crimson); }
.site-nav a { color: var(--in-crimson-mid); }
.site-nav a:hover { color: var(--in-thorn); }
a { color: var(--in-crimson-mid); }
a:hover { color: var(--in-crimson); }

/* ---------------------------------------------------------------------------
   Hero
   --------------------------------------------------------------------------- */
.in-hero {
  text-align: center;
  padding: 3.5rem 1.5rem 2rem;
  max-width: 820px;
  margin: 0 auto;
}
.in-hero h1 {
  font-size: clamp(2.4rem, 6vw, 3.8rem);
  font-weight: 800;
  color: var(--in-crimson);
  line-height: 1.05;
  margin: 0.7rem 0 0.3rem;
}
.in-hero-roman {
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  font-style: italic;
  color: var(--in-ash-mid);
  letter-spacing: 0.04em;
  margin: 0 0 0.4rem;
}
.in-hero-meaning {
  font-size: 0.85rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--in-crimson-mid);
  margin: 0 0 1.2rem;
}
.in-hero p {
  font-size: 1.0rem;
  line-height: 1.85;
  color: #3a2820;
  margin: 0 0 0.8rem;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

/* Thorn mark SVG */
.in-hero-mark {
  display: inline-block;
  margin-bottom: 0.8rem;
  filter: drop-shadow(0 2px 10px rgba(138,26,26,0.20));
}

/* Stat row */
.in-stat-row {
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  margin: 1.5rem 0 0.5rem;
  flex-wrap: wrap;
}
.in-stat { text-align: center; }
.in-stat-num {
  font-size: 1.85rem;
  font-weight: 700;
  color: var(--in-crimson);
  line-height: 1;
  margin-bottom: 0.2rem;
}
.in-stat-label {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--in-ash);
}

/* ---------------------------------------------------------------------------
   Context banner
   --------------------------------------------------------------------------- */
.in-context-banner {
  max-width: 760px;
  margin: 0 auto 3rem;
  background: var(--in-crimson-pale2);
  border: 1px solid rgba(138,26,26,0.14);
  border-left: 4px solid var(--in-crimson);
  border-radius: 0 6px 6px 0;
  padding: 1.1rem 1.5rem;
  font-size: 0.88rem;
  line-height: 1.8;
  color: #2a1818;
}
.in-context-banner strong { color: var(--in-crimson); }

/* ---------------------------------------------------------------------------
   Verse reader
   --------------------------------------------------------------------------- */
.in-verses-header {
  max-width: 820px;
  margin: 0 auto 1.5rem;
  padding: 0 1.5rem;
  text-align: center;
}
.in-verses-header h2 {
  font-size: 1.0rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--in-crimson);
  margin: 0 0 0.3rem;
}
.in-verses-header p {
  font-size: 0.85rem;
  color: var(--in-ash);
  font-style: italic;
  margin: 0;
}

/* Verse grid */
.in-verses-main {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1rem;
}
@media (max-width: 500px) {
  .in-verses-main { grid-template-columns: 1fr; }
}

/* Individual verse card */
.in-verse {
  background: var(--in-parchment);
  border: 1px solid rgba(138,26,26,0.13);
  border-radius: 6px;
  overflow: hidden;
}
.in-verse-header {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.55rem 1rem;
  background: var(--in-crimson-pale2);
  border-bottom: 1px solid rgba(138,26,26,0.10);
}
.in-verse-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--in-ochre);
  min-width: 2rem;
}
.in-verse-theme {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--in-ash-mid);
  flex: 1;
}
.in-verse-body { padding: 0 1rem 0.5rem; }

/* Layers */
.in-layer {
  margin: 0;
  border-bottom: 1px solid rgba(138,26,26,0.07);
}
.in-layer:last-child { border-bottom: none; }
.in-layer-toggle {
  display: block;
  width: 100%;
  padding: 0.5rem 0;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--in-ash-mid);
  cursor: pointer;
  user-select: none;
  list-style: none;
  position: relative;
  padding-right: 1rem;
}
.in-layer-toggle::-webkit-details-marker { display: none; }
.in-layer-toggle::after {
  content: "›";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.9rem;
  color: var(--in-crimson);
  transition: transform 0.15s;
}
details[open] > .in-layer-toggle::after { transform: translateY(-50%) rotate(90deg); }
.in-layer-content { padding: 0 0 0.8rem; }

.in-tamil-verse {
  font-size: 1.0rem;
  line-height: 2;
  color: #2a1010;
}
.in-translit-verse {
  font-size: 0.9rem;
  line-height: 2;
  color: #3a2020;
  font-style: italic;
}
.in-english-prose {
  font-size: 0.88rem;
  line-height: 1.78;
  color: #2a1818;
}
.in-note {
  font-size: 0.80rem;
  line-height: 1.72;
  color: #5a4040;
  font-style: italic;
}

/* ---------------------------------------------------------------------------
   Page header (about page)
   --------------------------------------------------------------------------- */
.in-page-header {
  background: var(--in-crimson-pale2);
  border-bottom: 1px solid rgba(138,26,26,0.14);
  padding: 2rem 1.5rem 1.5rem;
  text-align: center;
}
.in-page-header-inner { max-width: 720px; margin: 0 auto; }
.in-page-header h1 { font-size: 1.3rem; color: var(--in-crimson); margin: 0 0 0.4rem; }
.in-page-header p { font-size: 0.88rem; color: var(--in-ash); font-style: italic; margin: 0; }

/* ---------------------------------------------------------------------------
   About page body
   --------------------------------------------------------------------------- */
.in-about-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  font-size: 0.97rem;
  line-height: 1.82;
  color: #2a1818;
}
.in-about-body h2 {
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--in-crimson);
  margin: 2.5rem 0 0.7rem;
  border-bottom: 1px solid rgba(138,26,26,0.15);
  padding-bottom: 0.4rem;
}
.in-about-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 1rem 0;
}
.in-about-body th {
  text-align: left;
  padding: 0.5rem 0.8rem;
  background: var(--in-crimson-pale2);
  color: var(--in-crimson);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-bottom: 1px solid rgba(138,26,26,0.18);
}
.in-about-body td {
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid rgba(138,26,26,0.07);
  vertical-align: top;
}
.in-about-body tr:last-child td { border-bottom: none; }
.in-about-body blockquote {
  border-left: 3px solid var(--in-crimson);
  margin: 1.2rem 0;
  padding: 0.6rem 1.2rem;
  background: var(--in-crimson-pale2);
  font-style: italic;
  color: #3a1010;
  border-radius: 0 4px 4px 0;
}

/* ---------------------------------------------------------------------------
   Companion work panel
   --------------------------------------------------------------------------- */
.in-companion-panel {
  max-width: 820px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}
.in-companion-panel h2 {
  font-size: 1.0rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--in-crimson);
  text-align: center;
  margin-bottom: 1.2rem;
}
.in-companion-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 500px) { .in-companion-grid { grid-template-columns: 1fr; } }
.in-companion-card {
  background: var(--in-parchment);
  border: 1px solid rgba(138,26,26,0.12);
  border-radius: 6px;
  padding: 1.1rem 1.2rem;
}
.in-companion-card.current { border-color: var(--in-crimson); border-width: 2px; }
.in-companion-label {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--in-ash-mid);
  margin-bottom: 0.35rem;
}
.in-companion-tamil { font-size: 1.1rem; color: var(--in-crimson); margin-bottom: 0.1rem; }
.in-companion-roman { font-size: 0.82rem; font-style: italic; color: var(--in-ash-mid); margin-bottom: 0.4rem; }
.in-companion-desc { font-size: 0.82rem; line-height: 1.65; color: #3a2020; }

/* ---------------------------------------------------------------------------
   Padinenkeezhkanakku panel
   --------------------------------------------------------------------------- */
.in-pkk-panel {
  max-width: 820px;
  margin: 0 auto 3rem;
  padding: 0 1.5rem;
}
.in-pkk-panel h2 {
  font-size: 1.0rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--in-crimson);
  text-align: center;
  margin-bottom: 1.2rem;
}
.in-pkk-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 0.6rem;
}
.in-pkk-item {
  background: var(--in-parchment);
  border: 1px solid rgba(138,26,26,0.09);
  border-radius: 4px;
  padding: 0.65rem 0.9rem;
  font-size: 0.82rem;
}
.in-pkk-item.current {
  border-color: var(--in-crimson);
  background: var(--in-crimson-pale2);
}
.in-pkk-item-tamil { font-size: 0.92rem; color: var(--in-crimson); margin-bottom: 0.1rem; }
.in-pkk-item-roman { font-size: 0.75rem; color: var(--in-ash-mid); }

/* ---------------------------------------------------------------------------
   Responsive
   --------------------------------------------------------------------------- */
@media (max-width: 600px) {
  .in-stat-row { gap: 1.5rem; }
  .in-stat-num { font-size: 1.6rem; }
}