/* Claw Ecosystem - Unified Design System */
/* Main theme matching the main page */

:root {
  /* Core Colors */
  --bg: #0d0d0d;
  --surface: #161616;
  --surface-light: #1a1a1a;
  --border: #2a2a2a;
  --border-hover: #444;
  
  /* Accent Colors */
  --accent: #76b900; /* NVIDIA green / claw green */
  --accent2: #00a3e0; /* Blue accent */
  --accent-glow: rgba(118, 185, 0, 0.3);
  
  /* Text Colors */
  --text: #e8e8e8;
  --text-secondary: #d1d1d1;
  --muted: #888;
  --muted-light: #999;
  
  /* Category Colors */
  --official: #f0a500;
  --enterprise: #76b900;
  --community: #00a3e0;
  --chinese: #a371f7;
  --platform: #ff7b72;
  
  /* UI Elements */
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  
  /* Gradients */
  --gradient-header: linear-gradient(135deg, #111 0%, #1a1a1a 100%);
  --gradient-accent: linear-gradient(135deg, #76b900 0%, #5a9600 100%);
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 2.4rem; letter-spacing: -0.5px; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

a {
  color: var(--accent2);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* Header */
header {
  background: var(--gradient-header);
  border-bottom: 1px solid var(--border);
  padding: 2.5rem 2rem 2rem;
  text-align: center;
  position: relative;
}

header h1 {
  margin-bottom: 0.5rem;
}

header h1 span {
  color: var(--accent);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

header p {
  color: var(--muted);
  margin-top: 0.4rem;
  font-size: 1.05rem;
}

/* Navigation */
.nav-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.nav-link {
  color: var(--accent2);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.nav-link:hover {
  background: rgba(0, 163, 224, 0.1);
  color: var(--accent);
  transform: translateY(-1px);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: all var(--transition-normal);
  transform: translateX(-50%);
}

.nav-link:hover::after {
  width: 80%;
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: #8fd100;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

.btn-success {
  background: #238636;
  color: #fff;
}

.btn-success:hover {
  background: #2ea043;
}

/* Cards */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition-normal);
}

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

.card.featured {
  border-color: var(--enterprise);
  box-shadow: 0 0 0 1px rgba(118, 185, 0, 0.2);
}

/* Grid System */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  padding: 1.5rem 0;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minminmax(350px, 1fr));
}

/* Filters */
.filters {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  flex-wrap: wrap;
  padding: 1.5rem 0;
}

.filter-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 20px;
  padding: 0.4rem 1.2rem;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-normal);
}

.filter-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-official { background: rgba(240, 165, 0, 0.2); color: var(--official); }
.badge-enterprise { background: rgba(118, 185, 0, 0.2); color: var(--enterprise); }
.badge-community { background: rgba(0, 163, 224, 0.2); color: var(--community); }
.badge-chinese { background: rgba(163, 113, 247, 0.2); color: var(--chinese); }
.badge-platform { background: rgba(255, 123, 114, 0.2); color: var(--platform); }

/* Section Titles */
.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 3rem 0 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.section-title span {
  color: var(--accent);
}

/* Footer */
footer {
  background: var(--gradient-header);
  border-top: 1px solid var(--border);
  padding: 3rem 2rem;
  text-align: center;
  margin-top: 4rem;
}

footer p {
  color: var(--muted);
  margin-bottom: 0.5rem;
}

footer a {
  color: var(--accent2);
  margin: 0 0.5rem;
}

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

/* Loading State */
.loading {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--muted);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

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

/* Responsive */
@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  
  .container, .container-narrow {
    padding: 1rem;
  }
  
  header {
    padding: 2rem 1rem 1.5rem;
  }
  
  .nav-links {
    flex-direction: column;
    align-items: stretch;
  }
  
  .nav-link {
    text-align: center;
  }
  
  .grid {
    grid-template-columns: 1fr;
    padding: 1rem 0;
  }
  
  .filters {
    padding: 1rem 0;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-muted { color: var(--muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

.w-full { width: 100%; }