/* ============================================================
   Bastion — Marketing Site Styles
   ============================================================ */

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

/* ----------------------------------------------------------
   Design Tokens
   ---------------------------------------------------------- */
:root {
  --bg-primary: #1a1d23;
  --bg-surface: #13161c;
  --bg-elevated: #1e2128;
  --border: #2a2e38;
  --text-primary: #e2e5ed;
  --text-dimmed: #8690a5;
  --text-muted: #4a5068;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #a78bfa;
  --accent-blue: #3b82f6;
  --accent-blue-light: #60a5fa;
  --gradient: linear-gradient(135deg, #8b5cf6, #3b82f6);
  --success: #34d399;
  --warning: #fb923c;
  --error: #f87171;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --max-width: 1000px;
  --nav-height: 64px;
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img, svg {
  display: block;
  max-width: 100%;
}

/* ----------------------------------------------------------
   Utility Classes
   ---------------------------------------------------------- */
.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ----------------------------------------------------------
   Buttons
   ---------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  white-space: nowrap;
}

.btn-filled {
  background: var(--gradient);
  color: #fff;
}
.btn-filled:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(139, 92, 246, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--accent-purple);
  color: var(--accent-purple-light);
}

/* ----------------------------------------------------------
   Navigation
   ---------------------------------------------------------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(26, 29, 35, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-brand svg,
.nav-brand img {
  width: 32px;
  height: 32px;
}

.nav-brand span {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dimmed);
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--text-primary);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ----------------------------------------------------------
   Hero Section
   ---------------------------------------------------------- */
.hero {
  position: relative;
  padding: 140px 0 80px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.1) 0%, rgba(59, 130, 246, 0.05) 40%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dimmed);
  margin-bottom: 28px;
}
.badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.hero h1 {
  font-size: 56px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero .subtitle {
  max-width: 640px;
  margin: 0 auto 36px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--text-dimmed);
}

/* Install command box */
.install-box {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 56px;
}
.install-box .prompt {
  color: var(--accent-purple-light);
  user-select: none;
}
.install-box .copy-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-elevated);
  color: var(--text-dimmed);
  cursor: pointer;
  transition: all 0.2s;
  flex-shrink: 0;
}
.install-box .copy-btn:hover {
  border-color: var(--accent-purple);
  color: var(--text-primary);
}

/* ----------------------------------------------------------
   Pipeline Visualization
   ---------------------------------------------------------- */
.pipeline {
  margin-top: 8px;
}

.pipeline-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  padding: 0 12px;
}

.pipeline-node {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-dimmed);
  background: var(--bg-surface);
  white-space: nowrap;
}

.pipeline-node.accent {
  border-color: rgba(139, 92, 246, 0.35);
  color: var(--accent-purple-light);
  background: rgba(139, 92, 246, 0.06);
}

.pipeline-arrow {
  display: inline-flex;
  align-items: center;
  padding: 0 6px;
  color: var(--text-muted);
  font-size: 16px;
  flex-shrink: 0;
}

.pipeline-caption {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

/* ----------------------------------------------------------
   Section Shared
   ---------------------------------------------------------- */
section {
  padding: 80px 0;
}

.section-heading {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-subheading {
  font-size: 16px;
  color: var(--text-dimmed);
  margin-bottom: 48px;
}

/* ----------------------------------------------------------
   Problem / Solution
   ---------------------------------------------------------- */
.problem-solution {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.ps-card {
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
}

.ps-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.ps-card h3 .icon {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.ps-card.problem h3 .icon {
  background: var(--error);
}

.ps-card.solution h3 .icon {
  background: var(--success);
}

.ps-card p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dimmed);
}

/* ----------------------------------------------------------
   Feature Grid
   ---------------------------------------------------------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.feature-card:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 0 24px rgba(139, 92, 246, 0.08);
}

.feature-icon {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient);
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-dimmed);
}

/* ----------------------------------------------------------
   Quick Start / Code Blocks
   ---------------------------------------------------------- */
.quickstart {
  padding: 80px 0;
}

.quickstart-steps {
  display: flex;
  flex-direction: column;
  gap: 36px;
}

.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--gradient);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.step-content {
  flex: 1;
  min-width: 0;
}

.step-content h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 12px;
}

.code-block {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 24px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dimmed);
  white-space: pre;
}

.code-block .comment {
  color: var(--text-muted);
}

.code-block .key {
  color: var(--accent-purple-light);
}

.code-block .value {
  color: var(--accent-blue-light);
}

.code-block .string {
  color: var(--success);
}

.code-block .command {
  color: var(--text-primary);
}

.code-block .prompt-symbol {
  color: var(--accent-purple-light);
  user-select: none;
}

/* ----------------------------------------------------------
   Trilogy Section
   ---------------------------------------------------------- */
.trilogy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.trilogy-card {
  padding: 32px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--bg-surface);
  text-align: center;
  transition: border-color 0.25s ease;
}
.trilogy-card:hover {
  border-color: var(--border);
}
.trilogy-card.current {
  border-color: var(--accent-purple);
  background: rgba(139, 92, 246, 0.04);
}

.trilogy-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.trilogy-icon.forge {
  background: rgba(234, 88, 12, 0.12);
  color: #ea580c;
}
.trilogy-icon.lantern {
  background: rgba(79, 70, 229, 0.12);
  color: #4f46e5;
}
.trilogy-icon.bastion {
  background: rgba(139, 92, 246, 0.12);
  color: #8b5cf6;
}

.trilogy-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
}

.trilogy-card p {
  font-size: 14px;
  color: var(--text-dimmed);
  line-height: 1.6;
}

.trilogy-subtitle {
  text-align: center;
  font-size: 15px;
  color: var(--text-muted);
}

/* ----------------------------------------------------------
   Footer
   ---------------------------------------------------------- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-left {
  font-size: 14px;
  color: var(--text-dimmed);
}

.footer-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.footer-right a {
  font-size: 14px;
  color: var(--text-dimmed);
  transition: color 0.2s;
}
.footer-right a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  margin-top: 20px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

/* ----------------------------------------------------------
   Responsive — Tablet (768px)
   ---------------------------------------------------------- */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 38px;
  }

  .hero .subtitle {
    font-size: 16px;
  }

  .problem-solution {
    grid-template-columns: 1fr;
  }

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .trilogy-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
  }

  .pipeline-chain {
    gap: 0;
  }

  .nav-links {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ----------------------------------------------------------
   Responsive — Mobile (480px)
   ---------------------------------------------------------- */
@media (max-width: 480px) {
  .hero {
    padding: 120px 0 60px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero .subtitle {
    font-size: 15px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }

  .install-box {
    font-size: 12px;
    padding: 12px 14px;
    gap: 8px;
  }

  .pipeline-chain {
    flex-direction: column;
    gap: 4px;
  }

  .pipeline-arrow {
    transform: rotate(90deg);
  }

  section {
    padding: 56px 0;
  }

  .section-heading {
    font-size: 28px;
  }

  .step {
    flex-direction: column;
    gap: 12px;
  }
}