/*
Theme Name: TechPractice Theme
Theme URI: https://techpractice.jp
Author: LifeFesta Inc.
Author URI: https://lifefesta.co.jp
Description: TechPractice - AI・マーケ・データの実践知メディア用カスタムテーマ
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: techpractice
Tags: blog, one-column, two-columns, custom-background, custom-logo, custom-menu, featured-images, threaded-comments, translation-ready, block-styles, wide-blocks
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 8.0
*/

/* ==========================================================================
   Base Styles - These are minimal styles as main CSS is in assets/css/main.css
   ========================================================================== */

/* Reset */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Root Variables */
:root {
  /* Primary Colors */
  --color-primary: #1E3A5F;
  --color-primary-dark: #152B47;
  --color-accent: #10B981;
  --color-accent-dark: #059669;

  /* Category Colors */
  --color-cat-ai: #8B5CF6;
  --color-cat-marketing: #F59E0B;
  --color-cat-data-analysis: #3B82F6;
  --color-cat-media-operation: #10B981;
  --color-cat-automation: #EC4899;

  /* Neutral Colors */
  --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;

  /* Typography */
  --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

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

/* Base Typography */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-gray-800);
  background-color: var(--color-gray-50);
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Screen Reader Text */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}

.screen-reader-text:focus {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  clip: auto !important;
  clip-path: none;
  color: var(--color-primary);
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  height: auto;
  left: 5px;
  line-height: normal;
  padding: 15px 23px 14px;
  text-decoration: none;
  top: 5px;
  width: auto;
  z-index: 100000;
}

/* Skip Link */
.skip-link {
  background-color: var(--color-primary);
  color: #fff;
  font-weight: 700;
  padding: 0.5rem 1rem;
}