:root {
  /* Unified Modern Color Palette */
  --primary-dark: #0f0f23;
  --primary-medium: #1a1a2e;
  --primary-light: #16213e;
  --accent-purple: #6c63ff;
  --accent-pink: #ff6b9d;
  --accent-cyan: #4ecdc4;
  --accent-orange: #ffa726;
  --text-primary: #ffffff;
  --text-secondary: #e1e5f2;
  --text-muted: #a5a5b8;
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.15);
  --card-bg: rgba(255, 255, 255, 0.08);
  --success: #10b981;
  --error: #ef4444;
  --warning: var(--accent-orange);
  --shadow-light: rgba(108, 99, 255, 0.15);
  --shadow-medium: rgba(0, 0, 0, 0.2);
  --shadow-heavy: rgba(0, 0, 0, 0.4);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bouncy: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 20%, var(--accent-purple) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, var(--accent-pink) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, var(--accent-cyan) 0%, transparent 50%),
    linear-gradient(
      135deg,
      var(--primary-dark) 0%,
      var(--primary-medium) 50%,
      var(--primary-light) 100%
    );
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

/* Navigation */
.nav-header {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  padding: 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--glass-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-header a {
  color: var(--text-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 500;
  font-size: 1rem;
  padding: 0.75rem 1.5rem;
  border-radius: 50px;
  transition: var(--transition-smooth);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid transparent;
}

.nav-header a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--glass-border);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

/* Cards */
.content-card {
  background: var(--glass-bg);
  border-radius: 24px;
  padding: 2.5rem;
  margin: 2rem 0;
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.1);
  animation: fadeInUp 0.6s ease-out;
  position: relative;
  overflow: hidden;
}

/* Buttons */
.action-button {
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-pink));
  color: var(--text-primary);
  border: none;
  padding: 1.2rem 2.5rem;
  border-radius: 50px;
  font-size: 1.1rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition-bouncy);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin: 2rem auto;
  font-family: inherit;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
  min-width: 160px;
}

.action-button::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-smooth);
}

.action-button:hover::before {
  left: 100%;
}

.action-button:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(108, 99, 255, 0.4);
}

.action-button:active {
  transform: translateY(-1px) scale(1.02);
}

/* Loading states */
.loading-spinner {
  color: var(--accent-purple);
  animation: spin 1s linear infinite;
  font-size: 1.5rem;
}

.loading {
  opacity: 0.6;
  pointer-events: none;
}

.loading .content-card {
  position: relative;
}

.loading .content-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.1);
  border-radius: inherit;
  animation: pulse 1.5s ease-in-out infinite;
}

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

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

@keyframes pulse {
  0%,
  100% {
    opacity: 0.4;
  }
  50% {
    opacity: 0.6;
  }
}

/* Media Queries */
@media (max-width: 768px) {
  .container {
    padding: 1.5rem;
  }

  .nav-header {
    padding: 1rem;
  }

  .nav-header a {
    padding: 0.6rem 1.2rem;
    font-size: 0.95rem;
  }

  .content-card {
    padding: 2rem;
    margin: 1.5rem 0;
  }

  .action-button {
    padding: 1rem 2rem;
    font-size: 1rem;
    min-width: 140px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 1rem;
  }

  .content-card {
    padding: 1.5rem;
  }

  .action-button {
    padding: 0.9rem 1.8rem;
    gap: 0.5rem;
  }
}