:root {
  --bg: #0a0e17;
  --bg-secondary: #0f1419;
  --panel: #121821;
  --panel-hover: #1a1f2e;
  --border: #1f2937;
  --border-light: #374151;
  --text: #e5e7eb;
  --text-secondary: #d1d5db;
  --muted: #9ca3af;
  --accent: #38bdf8;
  --accent-hover: #0ea5e9;
  --accent-dark: #0284c7;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
}

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

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Animated background noise */
.noise {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.015;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='3' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' /%3E%3C/svg%3E");
  animation: grain 8s steps(10) infinite;
}

@keyframes grain {
  0%, 100% { transform: translate(0, 0); }
  10% { transform: translate(-5%, -10%); }
  20% { transform: translate(-15%, 5%); }
  30% { transform: translate(7%, -25%); }
  40% { transform: translate(-5%, 25%); }
  50% { transform: translate(-15%, 10%); }
  60% { transform: translate(15%, 0%); }
  70% { transform: translate(0%, 15%); }
  80% { transform: translate(3%, 35%); }
  90% { transform: translate(-10%, 10%); }
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  white-space: nowrap;
}

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

.logo-img {
  height: 60px;
  width: auto;
}

.title {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 600;
}

.subtitle {
  margin-left: auto;              /* ⬅ pushes subtitle to the right */
  padding-left: 1.5rem;
  border-left: 1px solid #ddd;    /* ⬅ divider */
  font-size: 0.95rem;
  color: #666;
}

/* Header */
header {
  position: relative;
  padding: 3rem 0;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 100%;
  background: radial-gradient(ellipse at top, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

header .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  animation: fadeInDown 0.8s ease-out;
}

.logo img {
  filter: drop-shadow(0 4px 12px rgba(56, 189, 248, 0.4));
  /* FIXED: Removed floating animation - logo now stays still */
}

.logo span {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  animation: fadeInDown 0.8s ease-out 0.2s both;
}

.subtitle {
  font-size: 1.25rem;
  color: var(--muted);
  font-weight: 400;
  animation: fadeInDown 0.8s ease-out 0.4s both;
}

/* Navigation */
nav {
  position: sticky;
  top: 0;
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: all 0.3s ease;
}

nav.scrolled {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

nav .container {
  display: flex;
  gap: 0.5rem;
  padding-top: 1rem;
  padding-bottom: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s ease;
  position: relative;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent);
  transform: translateX(-50%);
  transition: width 0.2s ease;
}

nav a:hover {
  color: var(--accent);
  background: rgba(56, 189, 248, 0.1);
}

nav a:hover::after {
  width: 50%;
}

nav a.active {
  color: var(--accent);
  background: rgba(56, 189, 248, 0.15);
}

nav a.active::after {
  width: 50%;
}

/* Main Content */
main {
  padding: 4rem 2rem;
  min-height: 60vh;
  animation: fadeIn 0.5s ease-out;
}

h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  background: linear-gradient(135deg, var(--text) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

h3 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: var(--accent);
  font-weight: 600;
}

h4 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text);
  font-weight: 600;
}

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Panels */
.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-top: 2rem;
  transition: all 0.3s ease;
}

.panel:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.panel-no-hover {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  margin-top: 2rem;
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  margin-top: 2rem;
}

.grid-2 {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  margin-top: 2rem;
}

.grid-3 {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  margin-top: 2rem;
}

/* Highlights */
.highlight {
  border-left: 4px solid var(--accent);
  padding: 1.5rem;
  margin: 2rem 0;
  background: linear-gradient(90deg, rgba(56, 189, 248, 0.1) 0%, transparent 100%);
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 500;
}

.callout {
  background: var(--panel);
  border: 1px solid var(--accent);
  border-radius: 12px;
  padding: 2rem;
  margin: 2rem 0;
}

.callout-success {
  border-color: var(--success);
  background: rgba(16, 185, 129, 0.05);
}

.callout-warning {
  border-color: var(--warning);
  background: rgba(245, 158, 11, 0.05);
}

/* Code Blocks */
pre {
  background: #020617;
  padding: 1.5rem;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 1.5rem 0;
}

code {
  font-family: var(--font-mono);
  color: var(--accent);
  background: rgba(56, 189, 248, 0.1);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

pre code {
  background: none;
  padding: 0;
}

.code-header {
  background: var(--panel);
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-bottom: none;
  border-radius: 8px 8px 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  font-weight: 600;
}

.code-header + pre {
  margin-top: 0;
  border-radius: 0 0 8px 8px;
}

.code-block {
  margin: 1.5rem 0;
}

/* Lists */
ul, ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

li {
  margin: 0.75rem 0;
  color: var(--text-secondary);
}

li strong {
  color: var(--text);
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: 0.75rem 0;
  padding-left: 2rem;
  position: relative;
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
  font-size: 1.2rem;
}

/* Stats */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.stat-card {
  text-align: center;
  padding: 2rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3);
}

.stat-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: var(--muted);
  font-size: 0.95rem;
}

/* Flow Diagram */
.flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin: 2rem 0;
  padding: 2rem;
  background: var(--panel);
  border-radius: 12px;
  border: 1px solid var(--border);
}

.flow-step {
  background: var(--bg);
  padding: 1rem 1.5rem;
  border-radius: 8px;
  border: 2px solid var(--accent);
  font-weight: 600;
  min-width: 120px;
  text-align: center;
  transition: all 0.3s ease;
}

.flow-step:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.3);
}

.flow-arrow {
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: bold;
}

/* Tags */
.tags {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 1rem 0;
}

.tag {
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border: 1px solid rgba(56, 189, 248, 0.2);
  transition: all 0.2s ease;
}

.tag:hover {
  background: rgba(56, 189, 248, 0.2);
  transform: translateY(-2px);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
  margin: 2rem 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2rem;
  padding-left: 1rem;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -2.5rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg);
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.5);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
  color: white;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
}

.btn-secondary {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
}

.btn-secondary:hover {
  background: var(--accent);
  color: white;
}

/* Comparison */
.comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}

.comparison-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
}

.comparison-header {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

/* Footer */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  margin-top: 4rem;
  padding: 3rem 0 1rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  color: var(--text);
  font-size: 1rem;
  margin-bottom: 1rem;
}

.footer-section p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.footer-section a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-section a:hover {
  color: var(--accent);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.5s ease-out;
}

.fade-in-up {
  animation: fadeInUp 0.5s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }
  
  header {
    padding: 2rem 0;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  main {
    padding: 2rem 0;
  }
  
  .grid, .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  
  .flow {
    flex-direction: column;
  }
  
  .flow-arrow {
    transform: rotate(90deg);
  }
  
  nav .container {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  nav a {
    text-align: center;
    width: 100%;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

a:focus,
button:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}