/* ============================================
   FOLD DB MARKETING WEBSITE - STYLES
   Premium Developer-Focused Design
   ============================================ */

/* CSS Variables */
:root {
  --primary: #6366f1;
  --primary-light: #818cf8;
  --primary-dark: #4f46e5;
  --accent: #22d3ee;
  --accent-secondary: #a855f7;

  --bg-dark: #0a0a0f;
  --bg-card: #111118;
  --bg-card-hover: #16161f;
  --bg-terminal: #0d1117;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --border-color: #1e293b;
  --border-glow: rgba(99, 102, 241, 0.3);

  --gradient-primary: linear-gradient(
    135deg,
    #6366f1 0%,
    #a855f7 50%,
    #22d3ee 100%
  );
  --gradient-glow: radial-gradient(
    circle at center,
    rgba(99, 102, 241, 0.15) 0%,
    transparent 70%
  );

  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Monaco, monospace;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  --shadow-glow: 0 0 60px rgba(99, 102, 241, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.4);

  --transition-fast: 0.15s ease;
  --transition-base: 0.25s ease;
  --transition-slow: 0.4s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

/* Background Animated Orbs */
.bg-orbs {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 20s ease-in-out infinite;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: var(--primary);
  top: -200px;
  right: -100px;
  animation-delay: 0s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: var(--accent-secondary);
  bottom: -150px;
  left: -100px;
  animation-delay: -7s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: var(--accent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -14s;
  opacity: 0.2;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(30px, -30px) scale(1.05);
  }
  50% {
    transform: translate(-20px, 20px) scale(0.95);
  }
  75% {
    transform: translate(20px, 10px) scale(1.02);
  }
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1rem 2rem;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-icon {
  font-size: 1.5rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.logo-accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.nav-github {
  display: flex;
  align-items: center;
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  transition: all var(--transition-fast);
}

.nav-github:hover {
  background: var(--bg-card-hover);
  color: var(--primary-light);
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.4);
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Section Containers */
.section-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

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

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8rem 2rem 4rem;
  position: relative;
}

.hero-container {
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.badge-icon {
  font-size: 1rem;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

/* Hero Terminal */
.hero-terminal {
  max-width: 700px;
  margin: 4rem auto 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-terminal);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-card), var(--shadow-glow);
  position: relative;
  z-index: 1;
}

.terminal-chrome {
  display: flex;
  align-items: center;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color);
}

.terminal-buttons {
  display: flex;
  gap: 8px;
}

.terminal-buttons span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.btn-close {
  background: #ff5f56;
}
.btn-minimize {
  background: #ffbd2e;
}
.btn-maximize {
  background: #27ca40;
}

.terminal-title {
  flex: 1;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.terminal-body {
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
}

.terminal-line {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.terminal-line.output {
  color: var(--text-secondary);
}

.terminal-line.indent {
  padding-left: 1.5rem;
}

.prompt {
  color: var(--accent);
  font-weight: 600;
}

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

.success {
  color: #27ca40;
}
.info {
  color: var(--accent);
}
.highlight {
  color: var(--primary-light);
}

.cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--accent);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
}
/* Features Section */
.features {
  padding: 8rem 0;
  position: relative;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-base);
}

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

.feature-highlight {
  grid-column: span 2;
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.1) 0%,
    rgba(168, 85, 247, 0.05) 100%
  );
  border-color: rgba(99, 102, 241, 0.3);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.feature-code {
  margin-top: 1.5rem;
  background: var(--bg-terminal);
  border-radius: var(--radius-md);
  padding: 1rem;
  overflow-x: auto;
}

.feature-code pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.6;
}

/* Code Examples Section */
.examples {
  padding: 8rem 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(99, 102, 241, 0.03) 50%,
    transparent 100%
  );
}

.examples-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.tab-btn.active {
  color: var(--text-primary);
  background: var(--bg-card);
  border-color: var(--primary);
}

.examples-content {
  position: relative;
}

.example-panel {
  display: none;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: start;
}

.example-panel.active {
  display: grid;
}

.example-description h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.example-description p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.example-features {
  list-style: none;
}

.example-features li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.example-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.example-code {
  background: var(--bg-terminal);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-color);
}

.code-lang {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.code-copy {
  padding: 0.35rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.example-code pre {
  padding: 1.5rem;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
  overflow-x: auto;
}

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

/* Syntax Highlighting */
.keyword {
  color: #c792ea;
}
.method {
  color: #82aaff;
}
.string {
  color: #c3e88d;
}
.number {
  color: #f78c6c;
}
.comment {
  color: #546e7a;
  font-style: italic;
}

/* Quick Start Section */
.quickstart {
  padding: 8rem 0;
}

.quickstart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.quickstart-step {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
  transition: all var(--transition-base);
}

.quickstart-step:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.5;
  margin-bottom: 1rem;
}

.quickstart-step h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.quickstart-step p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.step-code {
  background: var(--bg-terminal);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.step-code code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}

.quickstart-cta {
  text-align: center;
}

/* Architecture Section */
.architecture {
  padding: 8rem 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(168, 85, 247, 0.03) 50%,
    transparent 100%
  );
}

.arch-diagram {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
}

.arch-layer {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  text-align: center;
}

.arch-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.arch-items {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.arch-item {
  padding: 0.5rem 1rem;
  background: var(--bg-terminal);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.arch-client {
  border-color: var(--accent);
}
.arch-client .arch-item {
  color: var(--accent);
}

.arch-server {
  border-color: var(--primary);
}
.arch-server .arch-item {
  color: var(--primary-light);
}

.arch-storage {
  border-color: var(--accent-secondary);
}
.arch-storage .arch-item {
  color: var(--accent-secondary);
}

.arch-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
}

/* CTA Section */
.cta {
  padding: 8rem 0;
}

.cta-content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
  padding: 4rem;
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.1) 0%,
    rgba(168, 85, 247, 0.05) 100%
  );
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.cta-content::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: var(--gradient-glow);
  animation: rotate 20s linear infinite;
  z-index: 0;
}

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

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.cta-content h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.cta-content p {
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 4rem 0 2rem;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: 4rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-column h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer-column a {
  display: block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
  text-align: center;
  border-top: 1px solid var(--border-color);
  margin-top: 3rem;
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .feature-highlight {
    grid-column: span 1;
  }

  .example-panel.active {
    grid-template-columns: 1fr;
  }

  .example-description {
    order: 1;
  }

  .example-code {
    order: 2;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-mobile-toggle {
    display: flex;
  }

  .hero {
    padding-top: 6rem;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-stats {
    gap: 1.5rem;
  }

  .stat-divider {
    display: none;
  }

  .hero-terminal {
    margin-top: 2rem;
  }

  .terminal-body {
    font-size: 0.75rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

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

  .examples-tabs {
    gap: 0.25rem;
  }

  .tab-btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
  }

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

  .arch-items {
    flex-direction: column;
    gap: 0.5rem;
  }

  .footer-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .cta-content {
    padding: 2rem;
  }

  .cta-content h2 {
    font-size: 1.5rem;
  }
}