/* ============================================
   CSS VARIABLES - Define once, use everywhere
   ============================================ */
:root {
  /* Colors */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --white: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-hover: rgba(255, 255, 255, 0.15);
  --glass-bg-active: rgba(255, 255, 255, 0.25);
  --glass-border: rgba(255, 255, 255, 0.2);

  /* Spacing */
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;

  /* Typography */
  --font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
    sans-serif;

  /* Effects */
  --blur-amount: blur(20px);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-md: 0 20px 40px rgba(0, 0, 0, 0.3);
}

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

body {
  font-family: var(--font-family);
  background: var(--gradient-primary);
  min-height: 100vh;
  color: var(--white);
  overflow-x: hidden;
}

/* ============================================
   REUSABLE COMPONENTS
   ============================================ */

/* Home Button - Used across multiple pages */
.home-button {
  position: fixed;
  top: var(--spacing-md);
  left: var(--spacing-md);
  width: 50px;
  height: 50px;
  background: var(--glass-bg-hover);
  backdrop-filter: var(--blur-amount);
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  text-decoration: none;
  font-size: 1.5rem;
  transition: var(--transition-smooth);
  z-index: 100;
}

.home-button:hover {
  transform: translateY(-3px);
  background: var(--glass-bg-active);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Glass Card - Reusable glass morphism card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--blur-amount);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  background: var(--glass-bg-hover);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

/* Badge Component */
.badge {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--glass-bg-hover);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
}

.badge.live {
  background: rgba(239, 68, 68, 0.9);
  animation: pulse 2s ease-in-out infinite;
}

/* ============================================
   ANIMATIONS - Shared across all pages
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}

/* ============================================
   RESPONSIVE - Mobile adjustments
   ============================================ */
@media (max-width: 768px) {
  .home-button {
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    width: 45px;
    height: 45px;
  }
}