/* ============================================================
   ASHVA Tech — Main CSS Design System
   Primary: Brown  |  Secondary: Blue  |  Accent: Gold
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── CSS Custom Properties ─────────────────────────────────── */
:root {
  /* Browns */
  --brown-900: #3B1F0A;
  --brown-800: #5C2F0F;
  --brown-700: #7C4A1E;
  --brown-600: #A0622A;
  --brown-500: #C07830;
  --brown-400: #D4964E;
  --brown-300: #E8B87A;
  --brown-200: #F5D8B0;
  --brown-100: #FDF0E0;

  /* Blues */
  --blue-900: #0A1628;
  --blue-800: #0F2040;
  --blue-700: #1B3F72;
  --blue-600: #1E4E8C;
  --blue-500: #2E6AC8;
  --blue-400: #4D87E0;
  --blue-300: #7AADF0;
  --blue-200: #B8D4F8;
  --blue-100: #E8F1FD;

  /* Gold */
  --gold-500: #D4A853;
  --gold-400: #E8C070;
  --gold-300: #F5D88E;

  /* Backgrounds */
  --bg-base: #080604;
  --bg-deep: #0D0907;
  --bg-surface: #131009;
  --bg-elevated: #1A1510;
  --bg-card: rgba(255, 248, 235, 0.04);
  --bg-card-hover: rgba(255, 248, 235, 0.07);
  --bg-glass: rgba(255, 248, 235, 0.06);
  --bg-glass-border: rgba(255, 248, 235, 0.12);

  /* Text */
  --text-primary: #F5EFE6;
  --text-secondary: #C8BAA8;
  --text-muted: #8A7A68;
  --text-faint: #5A4E42;

  /* Gradients */
  --grad-brown: linear-gradient(135deg, var(--brown-800), var(--brown-600));
  --grad-blue: linear-gradient(135deg, var(--blue-800), var(--blue-600));
  --grad-hero: linear-gradient(135deg, #0D0907 0%, #1A1510 40%, #0F1E35 100%);
  --grad-card: linear-gradient(135deg, rgba(124,74,30,0.15) 0%, rgba(27,63,114,0.10) 100%);
  --grad-gold: linear-gradient(135deg, var(--gold-500), var(--gold-300));
  --grad-text-brown: linear-gradient(135deg, var(--brown-400), var(--gold-500));
  --grad-text-blue: linear-gradient(135deg, var(--blue-400), var(--blue-300));

  /* Borders */
  --border-subtle: rgba(255, 248, 235, 0.08);
  --border-medium: rgba(255, 248, 235, 0.15);
  --border-brown: rgba(192, 120, 48, 0.3);
  --border-gold: rgba(212, 168, 83, 0.4);
  --border-blue: rgba(46, 106, 200, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
  --shadow-xl: 0 16px 60px rgba(0,0,0,0.6);
  --shadow-brown: 0 8px 32px rgba(124,74,30,0.25);
  --shadow-blue: 0 8px 32px rgba(46,106,200,0.2);
  --shadow-gold: 0 4px 20px rgba(212,168,83,0.25);

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Typography */
  --font-display: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Z-index layers */
  --z-base: 0;
  --z-raised: 10;
  --z-floating: 20;
  --z-nav: 100;
  --z-modal: 200;
  --z-toast: 300;

  /* Nav height */
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ── Typography ─────────────────────────────────────────────── */
.font-display { font-family: var(--font-display); }
.font-mono { font-family: var(--font-mono); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-3xl { font-size: 1.875rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.text-6xl { font-size: 3.75rem; }
.text-7xl { font-size: 4.5rem; }

.text-gradient-brown {
  background: var(--grad-text-brown);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-blue {
  background: var(--grad-text-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-gold {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Layout Utilities ───────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-wide {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-sm {
  padding: var(--space-3xl) 0;
}

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-xl); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ── Section Headers ────────────────────────────────────────── */
.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--border-brown);
  background: rgba(124,74,30,0.15);
  color: var(--brown-300);
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Glassmorphism Card ─────────────────────────────────────── */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-card);
  opacity: 0;
  transition: opacity var(--transition-base);
  border-radius: inherit;
  pointer-events: none;
}

.glass-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-brown);
  box-shadow: var(--shadow-brown);
  transform: translateY(-4px);
}

.glass-card:hover::before {
  opacity: 1;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 14px 28px;
  border-radius: var(--radius-full);
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all var(--transition-bounce);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), transparent);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before { opacity: 1; }

.btn-primary {
  background: var(--grad-brown);
  color: #fff;
  box-shadow: var(--shadow-brown);
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 40px rgba(124,74,30,0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--border-brown);
  transform: translateY(-2px);
}

.btn-blue {
  background: var(--grad-blue);
  color: #fff;
  box-shadow: var(--shadow-blue);
}

.btn-blue:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 40px rgba(46,106,200,0.4);
}

.btn-gold {
  background: var(--grad-gold);
  color: var(--brown-900);
  box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
  transform: translateY(-2px) scale(1.02);
}

.btn-sm { padding: 10px 20px; font-size: 0.85rem; }
.btn-lg { padding: 18px 36px; font-size: 1.05rem; }

/* ── Badge ──────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.badge-brown { background: rgba(124,74,30,0.3); color: var(--brown-300); border: 1px solid var(--border-brown); }
.badge-blue { background: rgba(46,106,200,0.2); color: var(--blue-300); border: 1px solid var(--border-blue); }
.badge-gold { background: rgba(212,168,83,0.2); color: var(--gold-400); border: 1px solid var(--border-gold); }
.badge-green { background: rgba(52,199,89,0.15); color: #34C759; border: 1px solid rgba(52,199,89,0.3); }
.badge-red { background: rgba(255,59,48,0.15); color: #FF3B30; border: 1px solid rgba(255,59,48,0.3); }

/* ── Decorative elements ────────────────────────────────────── */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
  background-size: 100px 100px;
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.glow-brown { background: radial-gradient(circle, rgba(160,98,42,0.3), transparent 70%); }
.glow-blue { background: radial-gradient(circle, rgba(46,106,200,0.25), transparent 70%); }
.glow-gold { background: radial-gradient(circle, rgba(212,168,83,0.2), transparent 70%); }

/* ── Wave Separator ─────────────────────────────────────────── */
.wave-separator {
  width: 100%;
  overflow: hidden;
  line-height: 0;
  position: relative;
}

.wave-separator svg { display: block; }

/* ── Star / Dot divider ─────────────────────────────────────── */
.divider {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin: var(--space-2xl) 0;
  color: var(--text-faint);
}

.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-subtle);
}

/* ── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-surface); }
::-webkit-scrollbar-thumb { background: var(--brown-700); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--brown-600); }

/* ── Selection ──────────────────────────────────────────────── */
::selection { background: rgba(124,74,30,0.4); color: var(--text-primary); }

/* ── Focus ──────────────────────────────────────────────────── */
:focus-visible { outline: 2px solid var(--brown-500); outline-offset: 3px; border-radius: 4px; }

/* ── Particles Canvas ───────────────────────────────────────── */
#particles-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
}

/* ── Page wrapper ───────────────────────────────────────────── */
.page-wrapper {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

/* ── Tag pills ──────────────────────────────────────────────── */
.tag-pill {
  display: inline-flex;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.tag-pill:hover {
  background: rgba(124,74,30,0.2);
  border-color: var(--border-brown);
  color: var(--brown-300);
}

/* ── Utility classes ─────────────────────────────────────────── */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-primary-color { color: var(--text-primary); }
.text-secondary-color { color: var(--text-secondary); }
.text-muted-color { color: var(--text-muted); }
.text-brown { color: var(--brown-400); }
.text-gold { color: var(--gold-400); }
.text-blue { color: var(--blue-400); }
.fw-400 { font-weight: 400; }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fw-800 { font-weight: 800; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }
.w-full { width: 100%; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .container, .container-wide { padding: 0 var(--space-lg); }
  .section { padding: var(--space-3xl) 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .text-7xl { font-size: 3rem; }
  .text-6xl { font-size: 2.5rem; }
  .text-5xl { font-size: 2rem; }
  .hide-mobile { display: none !important; }
}

@media (max-width: 480px) {
  .container, .container-wide { padding: 0 var(--space-md); }
  .section { padding: var(--space-2xl) 0; }
}