/* Modern 2025 Theme - Based on CLAUDE.md Guidelines */

:root {
  /* Spacing scale */
  --space-2: 8px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  
  /* Border radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  
  /* Colors - Light mode */
  --bg-primary: #FAFAFA;
  --bg-secondary: #FFFFFF;
  --bg-tertiary: #F3F4F6;
  --text-primary: #0E0F12;
  --text-secondary: #4B5563;
  --text-muted: #9CA3AF;
  
  /* Accent color - Dark Blue */
  --accent-primary: #336699;
  --accent-hover: #2C5282;
  --accent-light: #4A7BA7;
  --accent-bg: rgba(51, 102, 153, 0.08);
  --accent-border: rgba(51, 102, 153, 0.2);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 8px 24px rgba(51, 102, 153, 0.15);
  
  /* Transitions */
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
}

/* Dark mode variables - ONLY applied when .dark-mode class is present */
body.dark-mode {
  --bg-primary: #0E0F12;
  --bg-secondary: #1A1B1E;
  --bg-tertiary: #25262B;
  --text-primary: #F3F4F6;
  --text-secondary: #D1D5DB;
  --text-muted: #6B7280;
  --accent-primary: #5B8FBF;
  --accent-hover: #7BA3CC;
  --accent-light: #8FB1D4;
  --accent-bg: rgba(91, 143, 191, 0.1);
  --accent-border: rgba(91, 143, 191, 0.25);
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 8px 24px rgba(91, 143, 191, 0.2);
}

/* Base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

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

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

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

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  overflow-wrap: break-word;
  hyphens: auto;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
  min-height: 44px;
  min-width: 44px;
  gap: var(--space-2);
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

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

/* Cards */
.card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

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

/* Generator cards with accent border */
.generator-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
  border-left: 4px solid var(--accent-primary);
  position: relative;
  overflow: hidden;
}

.generator-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--accent-primary), var(--accent-light));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.generator-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

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

/* Hero sections */
.hero-section {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
  padding: var(--space-20) 0;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, var(--accent-bg) 0%, transparent 70%);
  /* Animation removed for cleaner look */
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
}

.hero-title {
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-4);
}

/* Forms */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 600;
  color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-base);
  min-height: 44px;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: var(--accent-border);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

/* Sections with alternating backgrounds */
.section {
  padding: var(--space-16) 0;
}

.section:nth-child(even) {
  background: var(--bg-tertiary);
}

.section:last-child {
  padding-bottom: var(--space-12);
}

/* Grid layouts */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

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

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

/* Mobile first responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
  
  .hero-section {
    padding: var(--space-12) 0;
  }
  
  .section {
    padding: var(--space-12) 0;
  }
  
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

/* Loading states */
.skeleton {
  background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
  background-size: 200% 100%;
  animation: loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-md);
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Accessibility */
:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Empty states */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
}

.empty-state-icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
  opacity: 0.5;
}

.empty-state-title {
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.empty-state-description {
  color: var(--text-muted);
}

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

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent-primary); }