/* =====================================================
   TinyToolWeb - static-pages.css (Standalone)
   Styles for About and Privacy pages
   ===================================================== */

/* =====================================================
   1) Design Tokens
   ===================================================== */

:root {
  /* Brand */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-light: #3b82f6;

  /* Status */
  --success: #10b981;
  --success-hover: #059669;
  --warning: #f59e0b;
  --error: #ef4444;
  --info: #3b82f6;

  /* Text (Light) */
  --text-dark: #1f2937;
  --text-medium: #4b5563;
  --text-light: #6b7280;
  --text-lighter: #9ca3af;

  /* Surfaces (Light) */
  --bg-body: #ffffff;
  --bg-surface: #ffffff;
  --bg-surface-hover: #f9fafb;
  --bg-light: #f9fafb;
  --bg-lighter: #f3f4f6;

  /* Borders */
  --border: #e5e7eb;
  --border-dark: #d1d5db;
  --border-focus: #2563eb;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow: 0 1px 3px 0 rgba(0,0,0,0.1), 0 1px 2px 0 rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);

  /* Gradient */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;
}

.dark {
  --text-dark: #ffffff;
  --text-medium: #e5e7eb;
  --text-light: #a1a1aa;
  --text-lighter: #71717a;

  --bg-body: #000000;
  --bg-surface: #0a0a0a;
  --bg-surface-hover: #171717;
  --bg-light: #0a0a0a;
  --bg-lighter: #171717;

  --border: #262626;
  --border-dark: #404040;
  --border-focus: #3b82f6;

  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.5);
  --shadow: 0 2px 4px 0 rgba(0,0,0,0.6), 0 1px 2px 0 rgba(0,0,0,0.4);
  --shadow-md: 0 4px 8px -1px rgba(0,0,0,0.6), 0 2px 4px -1px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 20px -3px rgba(0,0,0,0.7), 0 4px 6px -2px rgba(0,0,0,0.5);

  --gradient-primary: linear-gradient(135deg, #4c51bf 0%, #6b46c1 100%);
}

/* =====================================================
   2) Reset & Base
   ===================================================== */

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--bg-body);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* =====================================================
   3) Layout
   ===================================================== */

.container { 
  max-width: 1200px; 
  margin: 0 auto; 
  padding: 0 var(--spacing-md); 
  width: 100%; 
}

/* =====================================================
   4) Header
   ===================================================== */

header {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

.logo:hover { 
  color: var(--primary-hover); 
}

.back-link {
  color: var(--text-light);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-base);
}

.back-link:hover { 
  color: var(--primary); 
}

.theme-toggle {
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-medium);
  transition: all var(--transition-base);
}

.theme-toggle:hover { 
  background: var(--bg-surface-hover); 
  border-color: var(--border-dark); 
}

.theme-toggle svg { 
  width: 18px; 
  height: 18px; 
}

/* =====================================================
   5) Main Content
   ===================================================== */

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

/* =====================================================
   6) Footer
   ===================================================== */

footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border);
  padding: var(--spacing-xl) 0;
  margin-top: 3rem;
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  align-items: center;
  text-align: center;
}

.footer-content p {
  color: var(--text-light);
  margin: 0;
  font-size: 0.9375rem;
}

/* =====================================================
   7) About Page Styles
   ===================================================== */

.page-about .hero-section {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  margin-bottom: var(--spacing-xl);
}

.page-about .hero-section h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

.page-about .hero-description {
  font-size: 1.25rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
}

.page-about .content-section {
  margin-bottom: var(--spacing-xxl);
}

.page-about .content-section h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-dark);
}

.page-about .content-section p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-medium);
  margin-bottom: var(--spacing-md);
}

.page-about .content-section ul {
  margin-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.page-about .content-section li {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-medium);
  margin-bottom: var(--spacing-sm);
}

.page-about .values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.page-about .value-card {
  background: var(--bg-surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.page-about .value-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.page-about .value-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  color: var(--primary);
}

.page-about .value-card p {
  font-size: 1rem;
  color: var(--text-medium);
  line-height: 1.6;
}

.page-about .stats-section {
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-xxl);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.page-about .stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-xl);
}

.page-about .stat {
  text-align: center;
}

.page-about .stat-number {
  font-size: 3rem;
  font-weight: 800;
  display: block;
  margin-bottom: var(--spacing-xs);
}

.page-about .stat-label {
  font-size: 1.125rem;
  opacity: 0.9;
}

.page-about .cta-section {
  text-align: center;
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xxl);
  box-shadow: var(--shadow);
}

.page-about .cta-section h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

.page-about .cta-section p {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
}

.page-about .cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* =====================================================
   8) Privacy Page Styles
   ===================================================== */

.page-privacy .privacy-header {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--border);
}

.page-privacy .privacy-header h1 {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

.page-privacy .last-updated {
  font-size: 1rem;
  color: var(--text-light);
  font-style: italic;
}

.page-privacy .highlight-box {
  background: var(--bg-light);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.page-privacy .highlight-box p {
  font-size: 1.0625rem;
  color: var(--text-medium);
  margin: 0;
  line-height: 1.7;
}

.page-privacy .privacy-section {
  margin-bottom: var(--spacing-xxl);
}

.page-privacy .privacy-section h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  color: var(--text-dark);
  border-bottom: 2px solid var(--border);
  padding-bottom: var(--spacing-sm);
}

.page-privacy .privacy-section h3 {
  font-size: 1.5rem;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

.page-privacy .privacy-section p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-medium);
  margin-bottom: var(--spacing-md);
}

.page-privacy .privacy-section ul {
  margin-left: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.page-privacy .privacy-section li {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-medium);
  margin-bottom: var(--spacing-sm);
}

.page-privacy .privacy-section a {
  color: var(--primary);
  text-decoration: underline;
  transition: color var(--transition-base);
}

.page-privacy .privacy-section a:hover {
  color: var(--primary-hover);
}

/* =====================================================
   9) Responsive Design
   ===================================================== */

@media (max-width: 768px) {
  .page-about .hero-section h1 {
    font-size: 2rem;
  }

  .page-about .hero-description {
    font-size: 1rem;
  }

  .page-about .content-section h2 {
    font-size: 1.5rem;
  }

  .page-about .values-grid {
    grid-template-columns: 1fr;
  }

  .page-about .stats-grid {
    grid-template-columns: 1fr;
  }

  .page-about .stat-number {
    font-size: 2.5rem;
  }

  .page-about .cta-buttons {
    flex-direction: column;
  }

  .page-privacy .privacy-header h1 {
    font-size: 2rem;
  }

  .page-privacy .privacy-section h2 {
    font-size: 1.5rem;
  }

  .page-privacy .privacy-section h3 {
    font-size: 1.25rem;
  }

  .page-privacy .privacy-section p,
  .page-privacy .privacy-section li {
    font-size: 1rem;
  }
}