/* =========================================================
   XXXIII.IO — INSTITUTIONAL INFRASTRUCTURE FABRIC
   THEME: ULTRA-ELITE LIQUID WHITE GLASS & INSTITUTIONAL PRECISION
   ========================================================= */

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

:root {
  /* Canvas & Glass Material */
  --bg-canvas: #F4F7FC;
  --bg-canvas-subtle: #EEF2F8;
  --bg-glass-card: rgba(255, 255, 255, 0.78);
  --bg-glass-elevated: rgba(255, 255, 255, 0.92);
  --bg-glass-highlight: rgba(255, 255, 255, 0.98);
  --border-glass: rgba(255, 255, 255, 0.95);
  --border-subtle: rgba(226, 232, 240, 0.85);

  /* Typography */
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-light: #94A3B8;

  /* Institutional Accents */
  --accent-cobalt: #2563EB;
  --accent-emerald: #10B981;
  --accent-gold: #D97706;
  --accent-violet: #8B5CF6;
  --accent-cyan: #06B6D4;

  /* Shadows */
  --shadow-soft: 0 10px 30px -10px rgba(15, 23, 42, 0.04), 0 4px 6px -2px rgba(15, 23, 42, 0.02);
  --shadow-elevated: 0 20px 45px -12px rgba(15, 23, 42, 0.08), 0 8px 16px -4px rgba(15, 23, 42, 0.03);
  --shadow-glow-blue: 0 0 35px -5px rgba(37, 99, 235, 0.18);

  /* Fonts */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  background-image: 
    radial-gradient(at 15% 15%, rgba(37, 99, 235, 0.05) 0px, transparent 50%),
    radial-gradient(at 85% 20%, rgba(16, 185, 129, 0.05) 0px, transparent 50%),
    radial-gradient(at 50% 65%, rgba(217, 119, 6, 0.04) 0px, transparent 55%);
  background-attachment: fixed;
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
}

/* Header */
.xxxiii-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  background: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.03);
  padding: 0 32px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.brand-badge {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.2);
}

.brand-text h1 {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-text p {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-item-btn {
  background: transparent;
  border: none;
  padding: 8px 16px;
  border-radius: 10px;
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-item-btn:hover, .nav-item-btn.active {
  background: rgba(255, 255, 255, 0.95);
  color: var(--text-primary);
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-glass);
}

.btn-pill {
  padding: 8px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary {
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.15);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.25);
}

/* Hero Section */
.hero-wrapper {
  max-width: 1440px;
  margin: 0 auto;
  padding: 48px 32px 32px;
}

.hero-box {
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass);
  border-radius: 28px;
  padding: 48px;
  box-shadow: var(--shadow-elevated);
  position: relative;
  overflow: hidden;
}

.hero-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #2563EB 0%, #10B981 50%, #D97706 100%);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.2);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent-cobalt);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 20px;
}

.hero-h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.hero-h1 span {
  background: linear-gradient(135deg, #0F172A 0%, #2563EB 50%, #10B981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 820px;
  margin-bottom: 32px;
}

.hero-kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.hero-kpi-card {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow-soft);
}

.kpi-lbl {
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.kpi-val {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
}

.kpi-desc {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* Stacks Grid */
.main-content {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 32px 64px;
}

.section-header {
  margin-bottom: 28px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
}

.sec-title {
  font-size: 26px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.sec-sub {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.stacks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 24px;
  margin-bottom: 48px;
}

.stack-card {
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 32px;
  box-shadow: var(--shadow-soft);
  transition: all 0.25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

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

.stack-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--accent-cobalt);
  display: inline-block;
  margin-bottom: 12px;
}

.stack-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.stack-overview {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 20px;
}

.features-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.feature-item svg {
  flex-shrink: 0;
  color: var(--accent-emerald);
  margin-top: 3px;
}

.stack-meta-box {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.price-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 32px;
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(24px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.price-card.featured {
  background: var(--bg-glass-elevated);
  border-color: rgba(37, 99, 235, 0.4);
  box-shadow: var(--shadow-glow-blue);
  position: relative;
}

.price-card.featured::before {
  content: 'MOST POPULAR';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-cobalt);
  color: #FFFFFF;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 100px;
}

/* Footer */
.xxxiii-footer {
  border-top: 1px solid var(--border-glass);
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px);
  padding: 48px 32px;
  margin-top: 64px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}