/* ============================================================================
   AXIOM Website — Premium Design System
   Modern dark mode with glassmorphism and vibrant accents
   ============================================================================ */

/* === IMPORTS === */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap");

/* === CSS VARIABLES (Design Tokens) === */
:root {
  /* Colors - Dark Theme (AXIOM OS - Cyberpunk) */
  --bg-primary: #050a08;
  --bg-secondary: #0a1410;
  --bg-tertiary: #10201a;
  --bg-glass: rgba(16, 32, 26, 0.7);

  /* Accent Colors */
  --accent-primary: #00ff88; /* Cyber Green */
  --accent-secondary: #b026ff; /* Electric Purple */
  --accent-tertiary: #00d9ff; /* Cyan */
  --accent-success: #00ff88;
  --accent-warning: #ffb800;

  /* Text Colors */
  --text-primary: #e8edf5;
  --text-secondary: #a8b2c4;
  --text-tertiary: #6b7a92;
  --text-code: #ff006e;

  /* Syntax Highlighting */
  --syntax-keyword: #ff006e;
  --syntax-type: #00d9ff;
  --syntax-function: #00ff88;
  --syntax-string: #ffb800;
  --syntax-comment: #6b7a92;
  --syntax-number: #7b2ff7;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 32px rgba(0, 217, 255, 0.3);

  /* Typography */
  --font-sans:
    "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "Courier New", monospace;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* === RESET & BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* === TYPOGRAPHY === */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

h1 {
  font-size: 3.5rem;
  font-weight: 800;
}
h2 {
  font-size: 2.5rem;
}
h3 {
  font-size: 1.75rem;
}
h4 {
  font-size: 1.25rem;
}
h5 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--space-md);
  color: var(--text-secondary);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--text-code);
  background: var(--bg-tertiary);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
}

/* === LAYOUT === */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-3xl) 0;
}

/* === HERO SECTION === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #0a0e1a 0%, #121824 50%, #1a2030 100%);
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(
      circle at 30% 50%,
      rgba(0, 217, 255, 0.1) 0%,
      transparent 50%
    ),
    radial-gradient(
      circle at 70% 50%,
      rgba(123, 47, 247, 0.1) 0%,
      transparent 50%
    );
  animation: heroGlow 20s ease-in-out infinite;
}

@keyframes heroGlow {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(-10%, -10%) scale(1.1);
  }
}

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

.hero h1 {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === BUTTONS === */
.btn {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: var(--bg-primary);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  border-color: var(--accent-primary);
  background: rgba(26, 32, 48, 0.9);
}

.btn-group {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* === NAVIGATION TABS === */
.tabs {
  display: flex;
  gap: var(--space-sm);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  padding: var(--space-sm);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-2xl);
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.tab {
  padding: var(--space-md) var(--space-lg);
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.tab:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
}

.tab.active {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  color: var(--bg-primary);
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

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

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

/* === GLASS CARDS === */
.card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: rgba(0, 217, 255, 0.2);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
}

/* === CODE BLOCKS === */
.code-block {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  overflow-x: auto;
  position: relative;
  margin: var(--space-lg) 0;
}

.code-block pre {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
  color: var(--text-primary);
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.code-language {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent-primary);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.copy-btn {
  padding: var(--space-sm) var(--space-md);
  background: rgba(0, 217, 255, 0.1);
  border: 1px solid rgba(0, 217, 255, 0.2);
  color: var(--accent-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.875rem;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background: rgba(0, 217, 255, 0.2);
}

.copy-btn.copied {
  background: rgba(0, 255, 136, 0.2);
  border-color: var(--accent-success);
  color: var(--accent-success);
}

/* === SYNTAX HIGHLIGHTING === */
.keyword {
  color: var(--syntax-keyword);
  font-weight: 600;
}
.type {
  color: var(--syntax-type);
}
.function {
  color: var(--syntax-function);
}
.string {
  color: var(--syntax-string);
}
.comment {
  color: var(--syntax-comment);
  font-style: italic;
}
.number {
  color: var(--syntax-number);
}

/* === MODAL === */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 14, 26, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.2s ease-out;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  max-width: 900px;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-2xl);
  position: relative;
  animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.modal-close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  background: rgba(255, 0, 110, 0.1);
  border: none;
  color: var(--accent-tertiary);
  font-size: 1.5rem;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: rgba(255, 0, 110, 0.2);
  transform: rotate(90deg);
}

/* === EXPANDABLE SECTIONS === */
.expandable {
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  overflow: hidden;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
}

.expandable-header {
  padding: var(--space-lg);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-fast);
}

.expandable-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.expandable-icon {
  transition: transform var(--transition-base);
  font-size: 1.25rem;
}

.expandable.expanded .expandable-icon {
  transform: rotate(180deg);
}

.expandable-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.expandable.expanded .expandable-content {
  max-height: 2000px;
  padding: 0 var(--space-lg) var(--space-lg);
}

/* === SEARCH BAR === */
.search-container {
  margin-bottom: var(--space-xl);
}

.search-input {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-tertiary);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.search-input::placeholder {
  color: var(--text-tertiary);
}

/* === BADGES === */
.badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  background: rgba(0, 217, 255, 0.1);
  color: var(--accent-primary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-right: var(--space-sm);
}

.badge-warning {
  background: rgba(255, 184, 0, 0.1);
  color: var(--accent-warning);
}
.badge-success {
  background: rgba(0, 255, 136, 0.1);
  color: var(--accent-success);
}
.badge-danger {
  background: rgba(255, 0, 110, 0.1);
  color: var(--accent-tertiary);
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  h2 {
    font-size: 1.75rem;
  }
  h3 {
    font-size: 1.25rem;
  }

  .container {
    padding: 0 var(--space-md);
  }
  .section {
    padding: var(--space-2xl) 0;
  }

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

  .btn-group {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
  }

  .tabs {
    flex-wrap: nowrap;
    justify-content: flex-start;
  }

  .modal-content {
    width: 95%;
    padding: var(--space-lg);
  }
}

/* === UTILITIES === */
.text-center {
  text-align: center;
}
.text-gradient {
  background: linear-gradient(
    135deg,
    var(--accent-primary),
    var(--accent-secondary)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.mb-0 {
  margin-bottom: 0;
}
.mt-lg {
  margin-top: var(--space-lg);
}
.hidden {
  display: none;
}

/* === NAVBAR === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-md) 0;
  transition: all var(--transition-base);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.05em;
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
}

.nav-item {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-item:hover {
  color: var(--accent-primary);
}

.nav-item.active {
  color: var(--text-primary);
}

.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-primary);
  box-shadow: var(--shadow-glow);
}

/* === FOOTER === */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--space-3xl) 0 var(--space-xl);
  margin-top: var(--space-3xl);
}

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

.footer-col h4 {
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}

.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-sm);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  text-align: center;
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

/* === LANDING PAGE ADDITIONS === */
.stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}
.stats a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
.stats a:hover {
    color: var(--accent-primary);
}
.pulse {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--accent-success);
    border-radius: 50%;
    margin-right: var(--space-xs);
    box-shadow: 0 0 10px var(--accent-success);
    animation: pulse 2s infinite;
}
@keyframes pulse {
    0% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
    100% { opacity: 1; transform: scale(1); }
}

/* Ecosystem Grid */
.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}
.ecosystem-card {
    background: var(--bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-decoration: none;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    display: block;
}
.ecosystem-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
}
.ecosystem-card.featured {
    border-color: var(--accent-secondary);
    background: linear-gradient(145deg, var(--bg-tertiary), rgba(123, 47, 247, 0.1));
}
.card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}
.card-tagline {
    color: var(--accent-primary);
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}
.card-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}
.card-link {
    color: var(--text-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}
.featured-badge {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--accent-secondary);
    color: white;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
}

/* Principles Grid */
.principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}
.principle-item {
    text-align: center;
}
.principle-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
    background: var(--bg-glass);
    width: 80px;
    height: 80px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.05);
}

/* CTA Section */
.cta {
    padding: 100px 0;
}
.cta-box {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(123, 47, 247, 0.1));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.site-email {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255,255,255,0.1);
    background: var(--bg-primary);
    color: white;
    font-size: 1rem;
    width: 300px;
    max-width: 100%;
    margin-right: var(--space-sm);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; }
    .site-email { margin-bottom: var(--space-sm); width: 100%; }
}