/* ========================================
   AgentMemory Landing Page Styles
   ======================================== */

/* CSS Variables */
:root {
  --primary: #6366F1;
  --primary-dark: #4F46E5;
  --secondary: #0F172A;
  --accent: #10B981;
  --background: #F8FAFC;
  --surface: #FFFFFF;
  --text-primary: #1E293B;
  --text-secondary: #64748B;
  --border: #E2E8F0;

  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease-out;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-primary);
  background: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: white;
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--background);
  border-color: var(--text-secondary);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

/* ========================================
   Navigation
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.navbar.scrolled {
  border-bottom-color: var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--secondary);
}

.logo span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-cta {
  padding: 10px 18px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--surface) 0%, var(--background) 100%);
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  text-align: center;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--secondary);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease-out;
}

.hero-subtitle {
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-ctas {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* Memory Network Animation */
.memory-network {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.memory-network::before,
.memory-network::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.memory-network::before {
  width: 600px;
  height: 600px;
  top: 10%;
  left: -10%;
}

.memory-network::after {
  width: 500px;
  height: 500px;
  bottom: 10%;
  right: -5%;
  animation-delay: 2s;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Network Nodes */
.network-nodes {
  position: absolute;
  inset: 0;
}

.node {
  position: absolute;
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.4;
  animation: nodeFloat 6s ease-in-out infinite;
}

.node:nth-child(1) { top: 20%; left: 15%; animation-delay: 0s; }
.node:nth-child(2) { top: 35%; left: 25%; animation-delay: 0.5s; }
.node:nth-child(3) { top: 15%; left: 40%; animation-delay: 1s; }
.node:nth-child(4) { top: 45%; left: 55%; animation-delay: 1.5s; }
.node:nth-child(5) { top: 25%; left: 70%; animation-delay: 2s; }
.node:nth-child(6) { top: 60%; left: 35%; animation-delay: 2.5s; }
.node:nth-child(7) { top: 50%; left: 80%; animation-delay: 3s; }
.node:nth-child(8) { top: 70%; left: 20%; animation-delay: 3.5s; }
.node:nth-child(9) { top: 80%; left: 60%; animation-delay: 4s; }
.node:nth-child(10) { top: 30%; left: 90%; animation-delay: 4.5s; }

@keyframes nodeFloat {
  0%, 100% { transform: translateY(0) scale(1); opacity: 0.4; }
  50% { transform: translateY(-15px) scale(1.2); opacity: 0.7; }
}

/* Connection Lines */
.connection-line {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.2;
  transform-origin: left center;
  animation: lineGlow 3s ease-in-out infinite;
}

.connection-line:nth-child(1) { top: 22%; left: 15%; width: 12%; transform: rotate(-5deg); animation-delay: 0s; }
.connection-line:nth-child(2) { top: 35%; left: 25%; width: 16%; transform: rotate(8deg); animation-delay: 1s; }
.connection-line:nth-child(3) { top: 18%; left: 40%; width: 18%; transform: rotate(-3deg); animation-delay: 2s; }
.connection-line:nth-child(4) { top: 45%; left: 55%; width: 14%; transform: rotate(5deg); animation-delay: 0.5s; }
.connection-line:nth-child(5) { top: 55%; left: 35%; width: 20%; transform: rotate(-8deg); animation-delay: 1.5s; }
.connection-line:nth-child(6) { top: 65%; left: 60%; width: 15%; transform: rotate(3deg); animation-delay: 2.5s; }

@keyframes lineGlow {
  0%, 100% { opacity: 0.15; }
  50% { opacity: 0.35; }
}

/* ========================================
   Problem Section
   ======================================== */
.problem {
  padding: 96px 24px;
  background: var(--surface);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--secondary);
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 64px;
}

.problem-card {
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition-normal);
  animation: fadeInUp 0.5s ease-out both;
}

.problem-card:nth-child(1) { animation-delay: 0.1s; }
.problem-card:nth-child(2) { animation-delay: 0.2s; }
.problem-card:nth-child(3) { animation-delay: 0.3s; }

.problem-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.problem-icon {
  width: 48px;
  height: 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
  transition: all var(--transition-fast);
}

.problem-card:hover .problem-icon {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.problem-icon i {
  width: 24px;
  height: 24px;
}

.problem-card-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 12px;
}

.problem-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.problem-transition {
  text-align: center;
  font-size: 20px;
  color: var(--secondary);
  font-weight: 500;
  padding: 32px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05) 0%, rgba(16, 185, 129, 0.05) 100%);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

/* ========================================
   Solution Section
   ======================================== */
.solution {
  padding: 96px 24px;
  background: var(--background);
}

/* Architecture Diagram */
.architecture {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
  flex-wrap: wrap;
}

.arch-node {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  min-width: 160px;
  transition: all var(--transition-normal);
  animation: fadeInUp 0.5s ease-out both;
}

.arch-node:nth-child(1) { animation-delay: 0.1s; }
.arch-node:nth-child(3) { animation-delay: 0.2s; }
.arch-node:nth-child(5) { animation-delay: 0.3s; }

.arch-node:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.arch-node-icon {
  width: 48px;
  height: 48px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  color: var(--primary);
}

.arch-node-icon i {
  width: 24px;
  height: 24px;
}

.arch-node-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 4px;
}

.arch-node-code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
}

.arch-arrow {
  color: var(--text-secondary);
  animation: fadeInUp 0.5s ease-out 0.15s both;
}

.arch-arrow i {
  width: 20px;
  height: 20px;
}

/* Capabilities Grid */
.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.capability-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all var(--transition-normal);
  animation: fadeInUp 0.5s ease-out both;
}

.capability-card:nth-child(1) { animation-delay: 0.1s; }
.capability-card:nth-child(2) { animation-delay: 0.15s; }
.capability-card:nth-child(3) { animation-delay: 0.2s; }
.capability-card:nth-child(4) { animation-delay: 0.25s; }
.capability-card:nth-child(5) { animation-delay: 0.3s; }

.capability-card:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.capability-icon {
  width: 44px;
  height: 44px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
  transition: all var(--transition-fast);
}

.capability-card:hover .capability-icon {
  background: var(--accent);
  color: white;
  transform: scale(1.05);
}

.capability-icon i {
  width: 22px;
  height: 22px;
}

.capability-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 8px;
}

.capability-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ========================================
   Footer
   ======================================== */
.footer {
  padding: 48px 24px;
  background: var(--secondary);
  color: white;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 24px;
}

.footer-link {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: white;
  text-decoration: underline;
}

.footer-copy {
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   SDK Example Section
   ======================================== */
.sdk-example {
  padding: 96px 24px;
  background: var(--surface);
}

.code-block-wrapper {
  max-width: 700px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--background);
  border-bottom: 1px solid var(--border);
}

.code-lang {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  color: var(--primary);
  border-color: var(--primary);
}

.copy-btn.copied {
  color: var(--accent);
  border-color: var(--accent);
}

.copy-btn i {
  width: 14px;
  height: 14px;
}

.code-block-wrapper pre {
  margin: 0;
  padding: 24px;
  background: #0d1117;
  overflow-x: auto;
}

.code-block-wrapper code {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: #c9d1d9;
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing {
  padding: 96px 24px;
  background: var(--background);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 64px;
}

.pricing-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-card-featured {
  border-color: var(--primary);
  box-shadow: 0 0 0 1px var(--primary);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  font-size: 11px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-tier {
  font-size: 18px;
  font-weight: 600;
  color: var(--secondary);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 36px;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 8px;
}

.pricing-price span {
  font-size: 16px;
  font-weight: 400;
  color: var(--text-secondary);
}

.pricing-desc {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.pricing-features li i {
  width: 16px;
  height: 16px;
  color: var(--accent);
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
}

/* ========================================
   Documentation CTA Section
   ======================================== */
.docs-cta {
  padding: 96px 24px;
  background: var(--surface);
}

.docs-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  padding: 48px;
  background: linear-gradient(135deg, var(--secondary) 0%, #1a2744 100%);
  border-radius: var(--radius-lg);
}

.docs-cta-icon {
  width: 64px;
  height: 64px;
  background: rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.docs-cta-icon i {
  width: 32px;
  height: 32px;
}

.docs-cta-text {
  flex-grow: 1;
}

.docs-cta-title {
  font-size: 24px;
  font-weight: 700;
  color: white;
  margin-bottom: 8px;
}

.docs-cta-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
}

.docs-cta-actions {
  display: flex;
  gap: 16px;
  flex-shrink: 0;
}

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

@media (max-width: 768px) {
  .docs-cta-inner {
    flex-direction: column;
    text-align: center;
    padding: 32px;
  }

  .docs-cta-actions {
    flex-direction: column;
    width: 100%;
  }

  .docs-cta-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-card {
    padding: 24px;
  }
}
  .nav-links {
    display: none;
  }

  .problem-grid,
  .capabilities-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

  .hero {
    padding: 100px 24px 60px;
  }

  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }

  .hero-ctas .btn {
    width: 100%;
    max-width: 280px;
  }

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

  .problem,
  .solution {
    padding: 64px 24px;
  }

  .problem-transition {
    font-size: 16px;
    padding: 24px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .problem-card,
  .capability-card,
  .arch-node {
    padding: 20px;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: 16px;
  }
}

/* Intersection Observer Animation */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}