/* ==========================================================================
   VM THOTTAM ASEEL GROUPS - THEME SYSTEM
   Strict modular rules: <= 300 lines
   Palette: Deep Obsidian (#07070b), Antique Gold (#d4af37), Crimson (#8b0000)
   ========================================================================== */

:root {
  /* Color Tokens */
  --bg-primary: #07070b;
  --bg-secondary: #0f0f15;
  --bg-card: rgba(20, 20, 28, 0.75);
  --bg-card-hover: rgba(28, 28, 40, 0.9);
  --bg-surface: #151520;

  /* Accent Gold & Crimson Tokens */
  --accent-gold: #d4af37;
  --accent-gold-light: #f3cf65;
  --accent-gold-dark: #aa820a;
  --accent-gold-glow: rgba(212, 175, 55, 0.35);

  --accent-crimson: #8b0000;
  --accent-crimson-light: #b22222;
  --accent-crimson-glow: rgba(139, 0, 0, 0.4);

  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.3);

  /* Parchment Colors for Ancient History */
  --parchment-bg: #f9f5ea;
  --parchment-text: #2c2416;
  --parchment-border: #d8c29d;

  /* Typography & Text */
  --text-main: #f5f5f7;
  --text-muted: #a0a0b0;
  --text-dim: #71717a;
  --border-subtle: rgba(212, 175, 55, 0.2);
  --border-focus: rgba(212, 175, 55, 0.6);

  /* Fonts */
  --font-tamil: 'Noto Sans Tamil', 'Mukta Malar', sans-serif;
  --font-ui: 'Outfit', sans-serif;
  --font-serif: 'Cinzel', 'Noto Serif Tamil', serif;

  /* Layout Standards (2-line gap, zero dead whitespace) */
  --section-py: clamp(1.2rem, 2.5vw, 1.8rem);
  --container-max: 1440px;
  --container-px: clamp(0.75rem, 3.5vw, 3.5rem);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;

  /* Transitions */
  --trans-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --trans-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-primary);
  color: var(--text-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  width: 100%;
}

body {
  font-family: var(--font-tamil);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  width: 100%;
  position: relative;
}

/* Cosmic / Heritage Subtle Ambient Mesh */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(circle at 15% 20%, rgba(139, 0, 0, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(15, 15, 25, 0.6) 0%, transparent 100%);
  pointer-events: none;
  z-index: -1;
}

/* Standardized Fluid Container (Zero Empty Gutter Model) */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

/* Section Rhythm Standard (Strict Two-Line Gap) */
.section-py {
  padding-top: var(--section-py);
  padding-bottom: var(--section-py);
}

/* Section Header Utility */
.section-head {
  text-align: center;
  margin-bottom: clamp(1.0rem, 2vw, 1.4rem);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.85rem;
  font-family: var(--font-ui);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent-gold);
  background: rgba(212, 175, 55, 0.1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  margin-bottom: 0.5rem;
}

.section-title {
  font-family: var(--font-tamil);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: #ffffff;
  line-height: 1.3;
}

.section-title span {
  color: var(--accent-gold);
  text-shadow: 0 0 20px var(--accent-gold-glow);
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 680px;
  margin: 0.4rem auto 0;
}

/* Buttons System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-tamil);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--trans-fast);
  border: none;
}

.btn-gold {
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-dark) 100%);
  color: #000000;
  font-weight: 700;
  box-shadow: 0 4px 18px var(--accent-gold-glow);
}

.btn-gold:hover {
  background: linear-gradient(135deg, var(--accent-gold-light) 0%, var(--accent-gold) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(212, 175, 55, 0.5);
}

.btn-crimson {
  background: linear-gradient(135deg, var(--accent-crimson) 0%, #5a0000 100%);
  color: #ffffff;
  box-shadow: 0 4px 18px var(--accent-crimson-glow);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.btn-crimson:hover {
  background: linear-gradient(135deg, var(--accent-crimson-light) 0%, var(--accent-crimson) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(178, 34, 34, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  background: rgba(212, 175, 55, 0.12);
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* Glass Card Baseline */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  transition: all var(--trans-smooth);
}

.glass-card:hover {
  border-color: var(--border-focus);
  box-shadow: 0 14px 40px rgba(212, 175, 55, 0.15);
}