/* ============================================
   GLOBAL STYLES
   ============================================ */

/* Import Professional Font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ============================================
   CSS Variables
   ============================================ */
:root {
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

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

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1400px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
  min-height: 100vh;
}

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

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

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

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

/* Fix hover text visibility in dark mode */
.card:hover .card-title,
.card:hover .card-description,
.card:hover h3,
.card:hover h4,
.card:hover p,
.card:hover li {
  color: inherit;
}

strong {
  font-weight: var(--font-weight-semibold);
}

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container-wide {
  max-width: var(--container-2xl);
}

.container-narrow {
  max-width: var(--container-lg);
}

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

/* ============================================
   Grid System
   ============================================ */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ============================================
   Components
   ============================================ */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: white;
}

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

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

.btn-ghost {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-color);
}

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

/* Cards */
.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.card:hover::before {
  opacity: 1;
}

/* Glassmorphism effect for special cards */
.card-glass {
  background: rgba(22, 22, 22, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

body.light-mode .card-glass {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.card-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.card-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: 0.875rem;
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
}

.badge-success {
  background-color: rgba(34, 197, 94, 0.15);
  color: #22c55e;
}

.badge-error {
  background-color: rgba(239, 68, 68, 0.15);
  color: #ef4444;
}

.badge-info {
  background-color: rgba(59, 130, 246, 0.15);
  color: #3b82f6;
}

/* Divider */
.divider {
  height: 1px;
  background-color: var(--border-color);
  margin: var(--spacing-xl) 0;
}

/* Server IP Box */
.server-ip-box {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: 'Monaco', 'Courier New', monospace;
  font-size: 1.125rem;
  margin: var(--spacing-lg) 0;
}

.server-ip-text {
  flex: 1;
  color: var(--accent-primary);
  font-weight: var(--font-weight-medium);
}

.copy-btn {
  padding: var(--spacing-sm);
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: white;
}

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

/* Status Indicator */
.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.95rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

.status-online .status-dot {
  background-color: #22c55e;
}

.status-offline .status-dot {
  background-color: #ef4444;
}

/* ============================================
   Utility Classes
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }

.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }

/* ============================================
   Gallery
   ============================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  aspect-ratio: 16/9;
  background-color: var(--bg-tertiary);
  cursor: pointer;
  transition: transform var(--transition-base);
}

.gallery-item:hover {
  transform: scale(1.02);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--spacing-md);
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  color: white;
  transform: translateY(100%);
  transition: transform var(--transition-base);
}

body.light-mode .gallery-overlay {
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
}

.gallery-item:hover .gallery-overlay {
  transform: translateY(0);
}

.gallery-overlay p {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  color: white;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  :root {
    font-size: 14px;
  }

  section {
    padding: var(--spacing-xl) 0;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .server-ip-box {
    flex-direction: column;
    text-align: center;
  }
  
  .gallery-grid {
    grid-template-columns: 1fr;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.75rem;
  }
  
  .hero-content {
    padding: var(--spacing-lg);
  }
}

@media (max-width: 480px) {
  .btn {
    width: 100%;
  }
  
  .navbar-logo {
    font-size: 1.1rem;
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .server-ip-box {
    font-size: 1rem;
  }
}

/* Tablet optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Large desktop optimizations */
@media (min-width: 1920px) {
  :root {
    font-size: 18px;
  }
  
  .container-2xl {
    max-width: 1600px;
  }
}