/* ==========================================================================
   திருச்சந்த விருத்தம் · Tiruchanda Viruttam — Saffron & Ochre Theme
   For Thirumalisai Āḻvār's 96 viruttam verses
   Layered on top of styles.css
   ========================================================================== */

:root {
  --tcv-saffron:       #9b4400;
  --tcv-saffron-mid:   #c45a00;
  --tcv-saffron-light: #e8a060;
  --tcv-saffron-pale:  rgba(155,68,0,0.10);
  --tcv-saffron-pale2: rgba(155,68,0,0.16);
  --tcv-ochre:         #7a3800;
  --tcv-blue:          #1c3f6e;
  --tcv-blue-pale:     rgba(28,63,110,0.09);
  --tcv-cream:         #f5e8c8;

  --accent-vermillion: var(--tcv-saffron);
  --accent-kumkum:     var(--tcv-saffron-mid);
  --accent-ochre:      var(--tcv-ochre);
  --accent-gold:       var(--tcv-saffron);
  --tp-flame:          var(--tcv-saffron);
  --tp-flame-mid:      var(--tcv-saffron-mid);
  --tp-flame-pale:     var(--tcv-saffron-pale);
  --tp-flame-pale2:    var(--tcv-saffron-pale2);
  --tp-gold:           var(--tcv-saffron);
}

body { background: #d9c99a; }

body::before {
  background-image:
    repeating-linear-gradient(0deg,
      transparent 0px, transparent 3px,
      rgba(120,60,0,0.03) 3px, rgba(120,60,0,0.03) 4px),
    repeating-linear-gradient(0deg,
      transparent 0px, transparent 60px,
      rgba(120,60,0,0.05) 60px, rgba(120,60,0,0.05) 61px,
      transparent 61px, transparent 140px,
      rgba(120,60,0,0.03) 140px, rgba(120,60,0,0.03) 142px),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.38 0 0 0 0 0.25 0 0 0 0 0.06 0 0 0 0.12 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.site-header { border-bottom-color: rgba(155,68,0,0.35); }
.site-logo .mark { color: var(--tcv-saffron); }
.wordmark-tamil { color: var(--tcv-saffron); }
.site-nav a { color: var(--tcv-blue); }
.site-nav a:hover { color: var(--tcv-saffron); }

/* Hero */
.tcv-hero {
  max-width: 860px; margin: 0 auto;
  padding: 3.5rem 1.5rem 2.5rem; text-align: center;
}
.tcv-title-tamil {
  font-family: var(--font-tamil);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800; color: var(--tcv-saffron);
  line-height: 1.1; margin-bottom: 0.4rem;
  text-shadow: 1px 1px 0 rgba(255,240,200,0.2);
}
.tcv-title-eng {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  color: var(--ink-secondary); letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}
.tcv-author {
  font-size: 0.85rem; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--tcv-ochre);
  margin-bottom: 1.75rem; opacity: 0.85;
}
.tcv-hero p {
  font-size: 1.05rem; line-height: 1.85;
  color: var(--ink-secondary); text-align: left;
  margin-bottom: 1rem;
}
.tcv-stats {
  display: flex; justify-content: center; gap: 2.5rem;
  margin: 1.5rem 0 0.5rem; flex-wrap: wrap;
}
.tcv-stat { text-align: center; }
.tcv-stat-num {
  font-family: var(--font-display); font-size: 2rem;
  font-weight: 700; color: var(--tcv-saffron); line-height: 1;
}
.tcv-stat-label {
  font-size: 0.72rem; letter-spacing: 0.15em;
  text-transform: uppercase; color: var(--ink-muted); margin-top: 0.25rem;
}
.tcv-divider {
  text-align: center; color: var(--tcv-saffron); opacity: 0.4;
  letter-spacing: 0.8em; padding-left: 0.8em;
  margin: 2rem 0; font-size: 1.1rem;
}

/* Philosophical banner */
.tcv-phil-banner {
  max-width: 700px; margin: 0 auto 2.5rem;
  padding: 1.1rem 1.5rem;
  background: linear-gradient(135deg, rgba(155,68,0,0.08), rgba(28,63,110,0.07));
  border: 1px solid rgba(155,68,0,0.28);
  border-radius: 4px; text-align: center;
  font-size: 0.95rem; line-height: 1.7;
  color: var(--ink-secondary); font-style: italic;
}
.tcv-phil-banner strong {
  font-style: normal; color: var(--tcv-blue);
}

/* Verse grid */
.tcv-grid-section {
  max-width: 1080px; margin: 2rem auto;
  padding: 0 1.5rem 3rem;
}
.tcv-grid-title {
  text-align: center; font-family: var(--font-display);
  font-size: 0.82rem; letter-spacing: 0.35em;
  text-transform: uppercase; color: var(--tcv-saffron);
  margin-bottom: 2rem; font-weight: 500;
}
.tcv-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.1rem;
}
.tcv-card {
  display: block; position: relative;
  background: var(--bg-paper);
  background-image: repeating-linear-gradient(0deg,
    rgba(43,22,7,0.02) 0px, rgba(43,22,7,0.02) 1px,
    transparent 1px, transparent 8px);
  border: 1px solid rgba(155,68,0,0.28);
  border-radius: 4px; padding: 1.1rem 1.4rem 1.1rem 1.2rem;
  text-decoration: none; color: inherit;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
  box-shadow: 0 1px 3px rgba(26,14,7,0.07); overflow: hidden;
}
.tcv-card::before {
  content: ''; position: absolute;
  left: 0; top: 0; bottom: 0; width: 4px;
  background: linear-gradient(180deg, var(--tcv-saffron), var(--tcv-ochre));
  opacity: 0.45; transition: opacity 0.22s ease;
}
.tcv-card:hover { transform: translateY(-3px); box-shadow: 0 4px 16px rgba(26,14,7,0.14); border-color: rgba(155,68,0,0.52); }
.tcv-card:hover::before { opacity: 1; }
.tcv-card-header { display: flex; align-items: baseline; gap: 0.6rem; margin-bottom: 0.45rem; }
.tcv-card-num { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: var(--tcv-saffron); line-height: 1; min-width: 1.8rem; }
.tcv-card-label { font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--tcv-ochre); font-weight: 500; }
.tcv-card-incipit { font-family: var(--font-body); font-style: italic; font-size: 0.95rem; color: var(--ink-primary); margin-bottom: 0.25rem; }
.tcv-card-tamil { font-family: var(--font-tamil); font-size: 0.88rem; color: var(--ink-secondary); line-height: 1.5; }
.tcv-card-theme { display: inline-block; margin-top: 0.5rem; font-size: 0.67rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--tcv-blue); opacity: 0.72; }
.tcv-card-arrow { position: absolute; right: 0.9rem; top: 50%; transform: translateY(-50%); color: var(--tcv-saffron); opacity: 0; font-size: 1rem; transition: opacity 0.18s; }
.tcv-card:hover .tcv-card-arrow { opacity: 0.7; }

/* Verse page */
.tcv-pasuram-page { max-width: 780px; margin: 0 auto; padding: 2rem 1.5rem 4rem; }
.tcv-bc { display: flex; align-items: center; gap: 0.5rem; font-size: 0.875rem; color: var(--ink-muted); margin-bottom: 2rem; letter-spacing: 0.04em; flex-wrap: wrap; }
.tcv-bc a { color: var(--ink-secondary); text-decoration: none; }
.tcv-bc a:hover { color: var(--tcv-saffron); }
.tcv-bc .sep { opacity: 0.45; }

.tcv-metre-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(155,68,0,0.08); border: 1px solid rgba(155,68,0,0.24);
  border-radius: 20px; padding: 0.3rem 0.9rem;
  font-family: var(--font-display); font-size: 0.75rem;
  color: var(--tcv-saffron); letter-spacing: 0.1em; margin-bottom: 1rem;
}

.tcv-verse-card {
  position: relative; background: var(--bg-paper);
  background-image:
    linear-gradient(180deg, rgba(155,68,0,0) 0%, rgba(155,68,0,0.025) 50%, rgba(155,68,0,0) 100%),
    repeating-linear-gradient(0deg, rgba(43,22,7,0.02) 0px, rgba(43,22,7,0.02) 1px, transparent 1px, transparent 8px);
  border: 1px solid var(--border-medium); border-radius: 4px;
  padding: 3.5rem 3rem; box-shadow: var(--shadow-paper); overflow: hidden;
}
.tcv-verse-card::before, .tcv-verse-card::after {
  content: ''; position: absolute; top: 50%; transform: translateY(-50%);
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--bg-primary); border: 1.5px solid var(--border-strong);
  box-shadow: inset 0 1px 2px rgba(0,0,0,0.3);
}
.tcv-verse-card::before { left: 14px; }
.tcv-verse-card::after  { right: 14px; }

.tcv-verse-num { text-align: center; font-family: var(--font-display); font-size: 0.75rem; letter-spacing: 0.28em; text-transform: uppercase; color: var(--tcv-saffron); margin-bottom: 0.3rem; }
.tcv-incipit { text-align: center; font-family: var(--font-display); font-style: italic; font-size: 1.05rem; color: var(--tcv-saffron); margin-bottom: 2rem; letter-spacing: 0.03em; }

.tcv-panel-label { font-family: var(--font-display); font-size: 0.72rem; letter-spacing: 0.25em; text-transform: uppercase; color: var(--tcv-saffron); margin-bottom: 0.65rem; font-weight: 500; }
.tcv-tamil-panel { margin-bottom: 1.75rem; padding-bottom: 1.75rem; border-bottom: 1px solid var(--border-subtle); }
.tcv-tamil-text { font-family: var(--font-tamil); font-size: 1.875rem; line-height: 1.65; color: var(--ink-primary); font-weight: 600; white-space: pre-line; margin: 0; }
.tcv-listen-btn {
  display: inline-flex; align-items: center; gap: 0.45rem;
  margin-top: 0.85rem; padding: 0.45rem 0.9rem;
  background: rgba(155,68,0,0.07); border: 1px solid var(--tcv-saffron);
  border-radius: 20px; color: var(--tcv-saffron);
  font-family: var(--font-display); font-size: 0.8rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  cursor: pointer; transition: all 0.15s;
}
.tcv-listen-btn:hover { background: var(--tcv-saffron); color: var(--bg-paper); }

.tcv-collapsible { background: var(--bg-paper); border: 1px solid rgba(155,68,0,0.2); border-radius: 4px; margin-bottom: 0.75rem; overflow: hidden; }
.tcv-toggle { width: 100%; text-align: left; background: none; border: none; cursor: pointer; padding: 1rem 1.5rem; font-family: var(--font-display); font-size: 0.9rem; color: var(--ink-secondary); display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid rgba(155,68,0,0.12); transition: background 0.12s; }
.tcv-toggle:hover { background: rgba(155,68,0,0.06); }
.tcv-toggle .arrow { font-size: 0.75rem; transition: transform 0.2s; color: var(--tcv-saffron); }
.tcv-toggle.open .arrow { transform: rotate(180deg); }
.tcv-panel-body { padding: 1.2rem 1.5rem 1.4rem; display: none; }
.tcv-panel-body.open { display: block; }

.tcv-translit { font-family: var(--font-body); font-style: italic; font-size: 1.1rem; line-height: 1.65; color: var(--ink-secondary); white-space: pre-line; margin: 0; }
.tcv-english  { font-family: var(--font-display); font-size: 1.2rem; font-style: italic; line-height: 1.7; color: var(--ink-primary); white-space: pre-line; margin: 0; }
.tcv-urai     { font-family: var(--font-tamil); font-size: 1.05rem; line-height: 1.85; color: var(--ink-secondary); }
.tcv-alt      { font-family: var(--font-display); font-style: italic; font-size: 1.05rem; line-height: 1.7; color: var(--ink-secondary); white-space: pre-line; margin: 0; }
.tcv-theme    { font-family: var(--font-body); font-size: 0.975rem; line-height: 1.75; color: var(--ink-secondary); }
.tcv-note     { font-family: var(--font-body); font-size: 0.975rem; line-height: 1.8; color: var(--ink-secondary); }

/* 96-dot progress */
.tcv-progress { display: flex; justify-content: center; gap: 0.22rem; margin-bottom: 1.5rem; flex-wrap: wrap; max-width: 600px; margin-left: auto; margin-right: auto; }
.tcv-progress-dot { width: 7px; height: 7px; border-radius: 50%; background: rgba(155,68,0,0.18); transition: background 0.2s; }
.tcv-progress-dot.active  { background: var(--tcv-saffron); }
.tcv-progress-dot.visited { background: rgba(155,68,0,0.42); }

.tcv-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-top: 2.5rem; }
.tcv-nav-link { display: block; padding: 1.2rem 1.4rem; background: var(--bg-paper); border: 1px solid var(--border-subtle); border-radius: 4px; text-decoration: none; color: inherit; transition: all 0.2s ease; }
.tcv-nav-link:hover { border-color: var(--tcv-saffron); transform: translateY(-2px); box-shadow: var(--shadow-paper); }
.tcv-nav-link.next { text-align: right; }
.tcv-nav-link.disabled { opacity: 0.35; pointer-events: none; }
.tcv-nav-dir { font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--ink-muted); margin-bottom: 0.35rem; }
.tcv-nav-incipit { font-family: var(--font-display); font-style: italic; font-size: 0.85rem; color: var(--tcv-saffron); margin-bottom: 0.2rem; }
.tcv-nav-tamil { font-family: var(--font-tamil); font-size: 0.92rem; color: var(--ink-primary); line-height: 1.4; }

@media (max-width: 640px) {
  .tcv-grid { grid-template-columns: 1fr; gap: 0.9rem; }
  .tcv-verse-card { padding: 2.5rem 1.5rem; }
  .tcv-tamil-text { font-size: 1.5rem; }
  .tcv-nav { grid-template-columns: 1fr; }
}