/* Theme Variables */
:root {
  /* Light Theme Colors */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #ffffff;
  --text-primary: #1d1d1f;
  --text-secondary: #555555;
  --text-tertiary: #888888;
  --border-color: rgba(0, 0, 0, 0.1);

  /* Glassmorphic Colors */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-bg-hover: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.2);

  /* Accent Colors - Blue-Gray */
  --accent-primary: #5b7c99;
  --accent-primary-light: #7a96b0;
  --accent-primary-dark: #3d5a7a;
  --accent-secondary: #8ba4bb;

  /* Semantic Colors */
  --success: #34c759;
  --warning: #ff9500;
  --danger: #ff3b30;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.2);
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-primary: #1d1d1f;
  --bg-secondary: #2a2a2c;
  --bg-tertiary: #424245;
  --text-primary: #ffffff;
  --text-secondary: #e0e0e0;
  --text-tertiary: #a0a0a0;
  --border-color: rgba(255, 255, 255, 0.1);

  --glass-bg: rgba(45, 45, 50, 0.6);
  --glass-bg-hover: rgba(60, 60, 65, 0.7);
  --glass-border: rgba(255, 255, 255, 0.15);

  --accent-primary: #5b8dc9;
  --accent-primary-light: #7aa8e0;
  --accent-primary-dark: #3d5a8a;
  --accent-secondary: #8bb4d9;
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

/* Glassmorphic Components */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
}

.glass-hover:hover {
  background: var(--glass-bg-hover);
  border-color: rgba(91, 124, 153, 0.3);
}

/* Buttons */
.btn-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  border-radius: 12px;
  padding: 10px 24px;
  font-weight: 500;
  transition: all 0.3s ease;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.btn-glass:hover {
  background: var(--glass-bg-hover);
  color: var(--accent-primary);
  border-color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-glass-accent {
  background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-primary-light) 100%);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 10px 24px;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-glass-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(91, 124, 153, 0.3);
  color: white;
}

/* Cards */
.glass-card {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 24px;
  transition: all 0.3s ease;
}

.glass-card:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 8px 32px rgba(91, 124, 153, 0.15);
  transform: translateY(-4px);
}

/* Links */
a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--accent-primary-light);
  text-decoration: none;
}

/* Responsive Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
}

p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Utilities */
.text-secondary {
  color: var(--text-secondary) !important;
}

.text-tertiary {
  color: var(--text-tertiary) !important;
}

.bg-secondary {
  background-color: var(--bg-secondary) !important;
}

.border-subtle {
  border-color: var(--border-color) !important;
}