:root {
  --bg-primary: hsl(230, 25%, 8%);
  --bg-secondary: hsl(230, 25%, 12%);
  --bg-tertiary: hsl(230, 25%, 15%);
  --border-glass: hsla(230, 20%, 80%, 0.08);
  --border-glass-focus: hsla(235, 100%, 70%, 0.3);
  
  --primary: hsl(250, 100%, 75%);
  --primary-glow: hsla(250, 100%, 75%, 0.15);
  --secondary: hsl(190, 100%, 65%);
  --secondary-glow: hsla(190, 100%, 65%, 0.15);
  
  --success: hsl(145, 90%, 60%);
  --warning: hsl(40, 95%, 60%);
  --danger: hsl(355, 95%, 65%);
  
  --text-primary: hsl(220, 30%, 95%);
  --text-secondary: hsl(220, 20%, 70%);
  --text-muted: hsl(220, 15%, 50%);
  
  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Consolas, monospace;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

/* Aurora Backdrop glow */
.aurora-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 80% 20%, hsla(260, 80%, 50%, 0.12) 0%, transparent 50%),
    radial-gradient(circle at 10% 80%, hsla(190, 80%, 50%, 0.1) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

/* Navbar */
.navbar {
  max-width: 1400px;
  margin: 1.5rem auto 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(20, 22, 35, 0.4);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  width: 40px;
  height: 40px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.4);
}

.logo-text h1 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(90deg, #fff, var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo-text span {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

.github-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  padding: 0.5rem 1rem;
  border-radius: 10px;
  color: var(--text-primary) !important;
  transition: all 0.2s !important;
}

.github-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Hero Section */
.hero {
  max-width: 1400px;
  margin: 4rem auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -1.5px;
  margin-bottom: 1.5rem;
}

.gradient-text {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.badge-pill {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  background: rgba(138, 92, 246, 0.1);
  border: 1px solid rgba(138, 92, 246, 0.2);
  color: var(--primary);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
}

.btn {
  padding: 0.85rem 1.75rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), hsl(250, 100%, 65%));
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(138, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(138, 92, 246, 0.45);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.15);
}

/* Glass Card */
.glass-card {
  background: rgba(25, 28, 45, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.hero-visual {
  padding: 0;
  overflow: hidden;
}

.visual-header {
  background: rgba(0, 0, 0, 0.2);
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-glass);
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.window-dot.red { background-color: var(--danger); }
.window-dot.yellow { background-color: var(--warning); }
.window-dot.green { background-color: var(--success); }

.window-title {
  margin-left: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.hero-visual pre {
  padding: 1.5rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  overflow-x: auto;
}

.keyword { color: hsl(275, 100%, 75%); }
.string { color: hsl(145, 90%, 65%); }

/* Sections */
.section {
  max-width: 1400px;
  margin: 6rem auto;
  padding: 0 2rem;
}

.section.alt-bg {
  background: rgba(255, 255, 255, 0.01);
  padding: 5rem 2rem;
  border-radius: 30px;
}

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

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
}

.section-header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

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

.arch-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow: hidden;
  transition: all 0.3s;
}

.arch-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.15);
}

.card-glow {
  position: absolute;
  top: -80px;
  right: -80px;
  width: 150px;
  height: 150px;
  filter: blur(40px);
  border-radius: 50%;
  opacity: 0.15;
  pointer-events: none;
}

.card-glow.purple { background-color: var(--primary); }
.card-glow.blue { background-color: var(--secondary); }
.card-glow.green { background-color: var(--success); }
.card-glow.orange { background-color: var(--warning); }

.arch-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
}

.component-pill {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-glass);
  padding: 0.4rem 0.8rem;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  display: inline-block;
  width: max-content;
  color: var(--secondary);
}

.arch-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

/* Tabs System */
.tab-system {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.tab-buttons {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-glass);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.tab-btn:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.tab-btn.active {
  color: var(--primary);
  background: rgba(138, 92, 246, 0.1);
  border-color: var(--primary);
}

.tab-panel {
  display: none;
  animation: fadeIn 0.4s ease;
}

.tab-panel.active {
  display: block;
}

.tab-panel h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.panel-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.feature-list li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: "✦";
  position: absolute;
  left: 0;
  color: var(--secondary);
}

/* Terminal */
.terminal {
  max-width: 800px;
  margin: 0 auto;
  padding: 0;
  background: hsl(230, 25%, 4%);
}

.terminal-body {
  padding: 2rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.8;
}

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

.prompt {
  color: var(--primary);
  margin-right: 0.5rem;
  font-weight: 700;
}

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

.output-line.success {
  color: var(--success);
}

/* Footer */
footer {
  text-align: center;
  padding: 4rem 2rem;
  border-top: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.85rem;
}

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

/* Media Queries */
@media (max-width: 968px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }
  
  .hero-content h1 {
    font-size: 2.75rem;
  }
  
  .hero-actions {
    justify-content: center;
  }
  
  .navbar {
    margin: 1rem;
    padding: 1rem;
  }
  
  .nav-links {
    display: none;
  }
}