:root {
  /* Core SIH Palette (Light) */
  --bg-primary: #faf7f2;
  --bg-secondary: #f5ede0;
  --bg-card: #ffffff;
  --bg-card-alt: #fff8f0;
  
  --text-primary: #1a1208;
  --text-secondary: #6b5a40;
  --text-muted: #a3927a;
  
  --brand-burgundy: #2b1810;
  --brand-burgundy-light: #3b2314;
  --brand-gold: #b8922a;
  --brand-gold-muted: rgba(184, 146, 42, 0.4);
  --brand-red: #a31515;
  --brand-green: #16a34a;
  
  --border-color: rgba(184, 146, 42, 0.2);
  --border-hover: rgba(184, 146, 42, 0.4);
  
  /* Glassmorphism / Shadows */
  --glass-bg: rgba(250, 247, 242, 0.7);
  --glass-border: rgba(184, 146, 42, 0.15);
  --shadow-sm: 0 2px 10px rgba(43, 24, 16, 0.05);
  --shadow-md: 0 6px 24px rgba(43, 24, 16, 0.08);
  --shadow-lg: 0 12px 32px rgba(43, 24, 16, 0.12);
  
  --nav-backdrop-filter: blur(16px);
  --card-backdrop-filter: blur(8px);
}

[data-theme="dark"] {
  /* Core SIH Palette (Dark) */
  --bg-primary: #0f0a05;
  --bg-secondary: #1a1208;
  --bg-card: #1f140e;
  --bg-card-alt: #2b1810;
  
  --text-primary: #f7f3ec;
  --text-secondary: #dcc89a;
  --text-muted: #8c7a66;
  
  --border-color: rgba(184, 146, 42, 0.15);
  --border-hover: rgba(184, 146, 42, 0.5);
  
  --glass-bg: rgba(15, 10, 5, 0.75);
  --glass-border: rgba(184, 146, 42, 0.2);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.7);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  letter-spacing: -0.02em;
  transition: background-color 0.4s ease, color 0.4s ease;
}

/* Animations & Micro-interactions */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(184, 146, 42, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(184, 146, 42, 0); }
  100% { box-shadow: 0 0 0 0 rgba(184, 146, 42, 0); }
}

.fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* Observers for scroll animations */
.observe-target {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.observe-target.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Layout Utilities */
.container {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 24px;
}

.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--card-backdrop-filter);
  -webkit-backdrop-filter: var(--card-backdrop-filter);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

/* Base Typo */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  line-height: 1.1;
  font-weight: 800;
  letter-spacing: -0.04em;
}

a {
  color: var(--brand-gold);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover {
  text-decoration: underline;
}

/* Nav */
.nav {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 200;
  pointer-events: none;
}
.nav-left, .nav-right {
  pointer-events: all;
  display: flex;
  align-items: center;
  gap: 10px;
}
.nav-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--glass-bg);
  backdrop-filter: var(--nav-backdrop-filter);
  -webkit-backdrop-filter: var(--nav-backdrop-filter);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 6px 16px 6px 6px;
  box-shadow: var(--shadow-md);
}
.nav-logo-img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--brand-gold);
  background: var(--brand-burgundy);
  flex-shrink: 0;
  box-shadow: 0 0 12px var(--brand-gold-muted);
}
.nav-logo-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.nav-brand-text {
  font-size: .82rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -.02em;
  line-height: 1.1;
}
.nav-brand-sub {
  font-size: .58rem;
  font-weight: 500;
  color: var(--brand-gold);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.nav-links-pill {
  position: relative;
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--glass-bg);
  backdrop-filter: var(--nav-backdrop-filter);
  -webkit-backdrop-filter: var(--nav-backdrop-filter);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 5px;
  box-shadow: var(--shadow-sm);
}
.nav-highlighter {
  position: absolute;
  top: 5px;
  bottom: 5px;
  left: 0;
  width: 0;
  border-radius: 100px;
  background: rgba(184, 146, 42, 0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
}
.nav-links-pill a {
  position: relative;
  z-index: 1;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 5px 13px;
  border-radius: 100px;
  transition: all .2s;
}
.nav-links-pill a:hover, .nav-links-pill a.active {
  color: var(--text-primary);
}
.nav-links-pill a[style] {
  background: none !important;
}
.nav-btn {
  background: var(--glass-bg);
  backdrop-filter: var(--nav-backdrop-filter);
  -webkit-backdrop-filter: var(--nav-backdrop-filter);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  padding: 9px 18px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: all .2s;
  cursor: pointer;
}
.nav-btn:hover {
  background: rgba(184, 146, 42, 0.15);
  transform: translateY(-1px);
}
.nav-cta-btn {
  background: var(--brand-burgundy);
  color: #f0d080;
  border-radius: 100px;
  padding: 9px 20px;
  font-size: .75rem;
  font-weight: 700;
  text-decoration: none;
  transition: all .2s;
  border: 1px solid rgba(184, 146, 42, 0.3);
  box-shadow: var(--shadow-md);
}
.nav-cta-btn:hover {
  opacity: .9;
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  padding: 0;
}
.theme-toggle svg {
  width: 16px;
  height: 16px;
  fill: var(--text-primary);
}

/* Mobile Nav */
.mob-nav-toggle {
  display: none;
  background: var(--brand-burgundy);
  border: 1.5px solid var(--brand-gold);
  color: #f0d080;
  border-radius: 8px;
  padding: 7px 12px;
  font-size: 12px;
  cursor: pointer;
  align-items: center;
  gap: 6px;
  font-family: inherit;
  font-weight: 700;
  z-index: 500;
}
.mob-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 10, 5, 0.65);
  z-index: 480;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.mob-nav-sheet {
  display: flex;
  flex-direction: column;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-card-alt);
  border-radius: 20px 20px 0 0;
  border-top: 2px solid var(--brand-gold);
  padding: 20px 20px 40px;
  z-index: 490;
  transform: translateY(100%);
  transition: transform .3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0s .3s;
  visibility: hidden;
}
.mob-nav-sheet.open {
  transform: translateY(0);
  visibility: visible;
  transition: transform .3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0s;
}
.mob-nav-sheet a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: .92rem;
  font-weight: 600;
  padding: 11px 0;
  border-bottom: 1px solid var(--border-color);
}
.mob-nav-sheet a:last-child {
  border-bottom: none;
}
.mob-nav-sheet a:hover, .mob-nav-sheet a.active {
  color: var(--brand-gold);
}
.mob-nav-handle {
  width: 40px;
  height: 4px;
  background: var(--border-hover);
  border-radius: 2px;
  margin: 0 auto 18px;
}

@media(max-width: 850px) {
  .mob-nav-toggle { display: flex; pointer-events: auto; order: 3; margin-left: 6px; }
  .nav-links-pill { display: none; }
  .nav-right a.nav-btn { display: none; }
  .nav-right { order: 2; margin-left: auto; gap: 6px; }
}

@media(max-width: 480px) {
  .nav-brand-text { font-size: .75rem; }
  .nav-brand-sub { font-size: .5rem; }
  .nav-logo-img { width: 36px; height: 36px; }
  .nav-cta-btn { padding: 7px 12px; font-size: .7rem; border-radius: 100px; }
  .mob-nav-toggle { padding: 6px 10px; font-size: 11px; margin-left: 8px; }
  .nav-pill { padding: 4px 12px 4px 4px; gap: 8px; }
  .nav { padding: 0 12px; top: 12px; }
}

/* Globals for buttons */
button {
  font-family: inherit;
  outline: none;
}