/*
Theme Name: AI WP Builder
Theme URI: https://netadx.ai/ai-wp-builder
Author: NetADX AI Architecture Team
Author URI: https://netadx.ai
Description: Lightweight, high-performance WordPress visual builder theme featuring direct-manipulation editing, systematic design tokens, and clean semantic markup.
Version: 2.5.7
Requires at least: 6.2
Requires PHP: 8.2
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: ai-wp-builder
Tags: full-site-editing, custom-colors, custom-typography, flexible-header, responsive-layout, clean-code
*/

/* ==========================================================================
   AI WP Builder - Modern Semantic CSS Reset & Design Tokens
   ========================================================================== */

:root {
  /* System Fonts */
  --ai-font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --ai-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  /* Fallback Base Spacing & Container */
  --ai-container-max: 1200px;
  --ai-container-padding: 1.5rem;
  --ai-radius-sm: 0.25rem;
  --ai-radius-md: 0.5rem;
  --ai-radius-lg: 0.75rem;
  --ai-radius-xl: 1rem;
  --ai-radius-full: 9999px;

  /* Typography Scale */
  --ai-text-xs: 0.75rem;
  --ai-text-sm: 0.875rem;
  --ai-text-base: 1rem;
  --ai-text-lg: 1.125rem;
  --ai-text-xl: 1.25rem;
  --ai-text-2xl: 1.5rem;
  --ai-text-3xl: 1.875rem;
  --ai-text-4xl: 2.25rem;
  --ai-text-5xl: 3rem;
  --ai-text-6xl: 3.75rem;
  
  /* Line Heights */
  --ai-leading-tight: 1.2;
  --ai-leading-normal: 1.5;
  --ai-leading-relaxed: 1.75;
}

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

html {
  font-family: var(--ai-font-sans);
  font-size: 16px;
  line-height: var(--ai-leading-normal);
  color: var(--ai-text-main, #1e293b);
  background-color: var(--ai-bg-body, #ffffff);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  letter-spacing: -0.02em;
  color: var(--ai-text-main, #0f172a);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

a {
  color: var(--ai-primary, #2563eb);
  text-decoration: none;
  transition: color 0.15s ease-in-out;
}

a:hover {
  color: var(--ai-primary-hover, #1d4ed8);
}

/* ==========================================================================
   Semantic Layout Helpers
   ========================================================================== */

.ai-container {
  width: 100%;
  max-width: var(--ai-container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--ai-container-padding);
  padding-right: var(--ai-container-padding);
}

.ai-grid {
  display: grid;
  gap: 2rem;
}

.ai-grid-2 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 768px) {
  .ai-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.ai-grid-3 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

@media (min-width: 768px) {
  .ai-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.ai-flex {
  display: flex;
}

.ai-items-center {
  align-items: center;
}

.ai-justify-between {
  justify-content: space-between;
}

.ai-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  padding: 0.75rem 1.5rem;
  border-radius: var(--ai-radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease-in-out;
  text-decoration: none;
}

.ai-btn-primary {
  background-color: var(--ai-primary, #2563eb);
  color: var(--ai-primary-contrast, #ffffff);
}

.ai-btn-primary:hover {
  background-color: var(--ai-primary-hover, #1d4ed8);
  color: var(--ai-primary-contrast, #ffffff);
}

.ai-btn-secondary {
  background-color: var(--ai-surface, #f8fafc);
  color: var(--ai-text-main, #1e293b);
  border-color: var(--ai-border, #e2e8f0);
}

.ai-btn-secondary:hover {
  background-color: var(--ai-border, #e2e8f0);
}