/*
Theme Name: Woszczu - Silesia Modern
Theme URI: https://example.com/woszczu
Author: Your Name
Author URI: https://example.com
Description: A modern WordPress theme inspired by Silesian industrial heritage and contemporary European minimalism. Features clean typography with Newsreader font and a sophisticated blue accent color.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.4
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: woszczu
Tags: blog, design, minimal, modern, clean, responsive
*/

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */

:root {
  /* Colors - Light Mode */
  --color-primary: #137fec;
  --color-text: #1a1a1a;
  --color-text-light: #666666;
  --color-background: #ffffff;
  --color-background-alt: #f8f9fa;
  --color-border: #e0e0e0;

  /* Typography */
  --font-primary: 'Newsreader', Georgia, serif;
  --font-secondary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

  --font-size-xs: 0.875rem;
  /* 14px */
  --font-size-sm: 1rem;
  /* 16px */
  --font-size-base: 1.125rem;
  /* 18px */
  --font-size-lg: 1.5rem;
  /* 24px */
  --font-size-xl: 2rem;
  /* 32px */
  --font-size-2xl: 2.5rem;
  /* 40px */
  --font-size-3xl: 3rem;
  /* 48px */

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-xs: 0.5rem;
  /* 8px */
  --spacing-sm: 1rem;
  /* 16px */
  --spacing-md: 1.5rem;
  /* 24px */
  --spacing-lg: 2rem;
  /* 32px */
  --spacing-xl: 3rem;
  /* 48px */
  --spacing-2xl: 4rem;
  /* 64px */
  --spacing-3xl: 6rem;
  /* 96px */

  /* Border Radius */
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 12px;

  /* Layout */
  --container-width: 1280px;
  --content-width: 800px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* Dark Mode Colors */
body.dark-mode {
  --color-primary: #4a9eff;
  --color-text: #e8e8e8;
  --color-text-light: #a0a0a0;
  --color-background: #1a1a1a;
  --color-background-alt: #242424;
  --color-border: #333333;
}

/* ========================================
   Reset & Base Styles
   ======================================== */

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text);
  background-color: var(--color-background);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ========================================
   Typography
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: var(--font-size-2xl);
}

h3 {
  font-size: var(--font-size-xl);
}

h4 {
  font-size: var(--font-size-lg);
}

h5,
h6 {
  font-size: var(--font-size-base);
}

p {
  margin-bottom: var(--spacing-md);
}

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

a:hover {
  opacity: 0.8;
}

strong,
b {
  font-weight: 600;
}

em,
i {
  font-style: italic;
}

/* ========================================
   Layout Components
   ======================================== */

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

.content-wrapper {
  max-width: var(--content-width);
  margin: 0 auto;
}

/* ========================================
   Header & Navigation
   ======================================== */

.site-header {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-background);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.site-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin: 0;
}

.site-title a {
  color: var(--color-text);
}

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

.main-navigation a {
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.main-navigation a:hover,
.main-navigation .current-menu-item a {
  color: var(--color-primary);
}

/* ========================================
   Post Grid (Homepage)
   ======================================== */

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-3xl) 0;
}

.post-card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition-base);
}

.post-card:hover {
  transform: translateY(-4px);
}

.post-card-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: var(--spacing-md);
}

.post-card-content {
  flex: 1;
}

.post-card-meta {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.post-card-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
  line-height: var(--line-height-tight);
}

.post-card-title a {
  color: var(--color-text);
}

.post-card-excerpt {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

/* ========================================
   Featured Post (Hero)
   ======================================== */

.featured-post {
  margin: var(--spacing-3xl) 0;
  padding: var(--spacing-2xl);
  background-color: var(--color-background-alt);
  border-radius: var(--radius-lg);
}

.featured-post-image {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: var(--spacing-lg);
}

.featured-post-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

.featured-post-excerpt {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 800px;
}

/* ========================================
   Single Post
   ======================================== */

.single-post-header {
  text-align: center;
  margin: var(--spacing-3xl) 0 var(--spacing-2xl);
}

.single-post-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-md);
}

.single-post-meta {
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.single-post-image {
  width: 100%;
  max-height: 600px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-2xl);
}

.single-post-content {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-bottom: var(--spacing-3xl);
}

.single-post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  margin: var(--spacing-lg) 0;
}

.single-post-content blockquote {
  border-left: 4px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  font-style: italic;
  color: var(--color-text-light);
}

/* ========================================
   Footer
   ======================================== */

.site-footer {
  background-color: var(--color-background-alt);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
  border-top: 1px solid var(--color-border);
}

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

.footer-section h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-xs);
}

.footer-section a {
  color: var(--color-text-light);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  font-family: var(--font-secondary);
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

.footer-bottom-content {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.footer-bottom p {
  margin: 0;
}

/* Dark Mode Toggle */
.theme-toggle {
  background: none;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-xs) var(--spacing-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-secondary);
  font-size: var(--font-size-xs);
  color: var(--color-text);
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.theme-toggle-icon {
  font-size: 1.2em;
}

.social-links {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-md);
}

.social-links a {
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.social-links a:hover {
  color: var(--color-primary);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-align: center;
  border-radius: var(--radius);
  transition: all var(--transition-base);
  cursor: pointer;
  border: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: white;
}

/* ========================================
   Utilities
   ======================================== */

.text-center {
  text-align: center;
}

.mt-0 {
  margin-top: 0;
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-0 {
  margin-bottom: 0;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}