/*
Theme Name: AI Theme
Theme URI: https://example.com
Author: ThemeForge AI
Author URI: https://example.com
Description: A modern WordPress theme generated by ThemeForge AI
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ai-theme
Tags: custom-background, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready

This theme, like WordPress, is licensed under the GPL.
Use it to make something cool, have fun, and share what you've learned.
*/

/* ========================================
   CSS Custom Properties (Theme Tokens)
   ======================================== */
:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-secondary: #64748b;
  --color-accent: #f59e0b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  
  /* Neutral */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;
  --color-black: #000000;
  
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-serif: Georgia, 'Times New Roman', serif;
  --font-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  
  /* 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);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 0.125rem;
  --radius: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--space-4);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--color-gray-900);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
  margin-top: 0;
  margin-bottom: var(--space-4);
}

/* ========================================
   Layout
   ======================================== */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
}

@media (min-width: 640px) {
  .container {
    padding-left: var(--space-6);
    padding-right: var(--space-6);
  }
}

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky;
  top: 0;
  z-index: 50;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo img {
  max-height: 40px;
  width: auto;
}

.main-navigation ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-6);
}

.main-navigation a {
  color: var(--color-gray-700);
  font-weight: 500;
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.main-navigation a:hover,
.main-navigation a:focus {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .main-navigation {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--space-4);
  }
  
  .main-navigation.toggled {
    display: block;
  }
  
  .main-navigation ul {
    flex-direction: column;
    gap: var(--space-3);
  }
}

/* ========================================
   Content Area
   ======================================== */
.site-content {
  min-height: calc(100vh - 200px);
  padding: var(--space-8) 0;
}

.content-area {
  max-width: var(--container-lg);
  margin: 0 auto;
}

/* ========================================
   Posts & Articles
   ======================================== */
.post,
.page {
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-8);
  border-bottom: 1px solid var(--color-gray-200);
}

.post:last-child,
.page:last-child {
  border-bottom: none;
}

.entry-title {
  margin-bottom: var(--space-3);
}

.entry-title a {
  color: var(--color-gray-900);
}

.entry-title a:hover {
  color: var(--color-primary);
}

.entry-meta {
  color: var(--color-gray-500);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.entry-content {
  line-height: var(--leading-relaxed);
}

.entry-content img {
  border-radius: var(--radius-lg);
  margin: var(--space-6) 0;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-12) 0 var(--space-6);
}

.site-footer .container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
}

.site-footer h3 {
  color: var(--color-white);
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}

.site-footer a {
  color: var(--color-gray-300);
}

.site-footer a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-gray-700);
  text-align: center;
  font-size: var(--text-sm);
}

/* ========================================
   Buttons
   ======================================== */
.button,
button,
input[type="submit"],
input[type="button"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 500;
  line-height: 1;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.button-primary,
button.primary,
input[type="submit"] {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.button-primary:hover,
button.primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-white);
}

.button-secondary {
  background-color: var(--color-gray-200);
  color: var(--color-gray-800);
}

.button-secondary:hover {
  background-color: var(--color-gray-300);
}

/* ========================================
   Forms
   ======================================== */
input[type="text"],
input[type="email"],
input[type="url"],
input[type="password"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: var(--space-3);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background-color: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 500;
  color: var(--color-gray-700);
}

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

.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); }

.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); }

.hidden { display: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
  h1 { font-size: var(--text-3xl); }
  h2 { font-size: var(--text-2xl); }
  h3 { font-size: var(--text-xl); }
}