/*
Theme Name: FreshBrain
Theme URI: https://freshbrain.org
Author: FreshBrain Team
Author URI: https://freshbrain.org
Description: A clean, fast, modern theme for FreshBrain.org — AI learning, tools, productivity, and digital skills.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 8.0
License: GPL v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: freshbrain
Tags: blog, education, minimal, clean, seo-friendly
*/

/* ==========================================================================
   0. CSS CUSTOM PROPERTIES
   ========================================================================== */
:root {
  /* Brand Colors */
  --color-primary:      #1a6cf6;
  --color-primary-dark: #1252c2;
  --color-primary-light:#e8f0fe;
  --color-accent:       #0ecb8a;
  --color-accent-dark:  #0aa370;

  /* Neutrals */
  --color-bg:           #fafafa;
  --color-surface:      #ffffff;
  --color-border:       #e8eaed;
  --color-border-light: #f1f3f4;

  /* Text */
  --color-text:         #1a1a2e;
  --color-text-muted:   #5f6368;
  --color-text-light:   #9aa0a6;

  /* Categories */
  --cat-ai-tools:       #1a6cf6;
  --cat-learn-ai:       #8b5cf6;
  --cat-productivity:   #0ecb8a;

  /* Typography */
  --font-heading: 'DM Serif Display', 'Georgia', serif;
  --font-body:    'Plus Jakarta Sans', 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;

  /* Scale */
  --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;
  --text-6xl:  3.75rem;

  /* 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 */
  --max-width:       1200px;
  --content-width:   780px;
  --sidebar-width:   300px;

  /* Shadows */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.10);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.12);

  /* Radii */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   400ms ease;
}

/* ==========================================================================
   1. RESET & BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input, textarea, select { font: inherit; }
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

/* ==========================================================================
   2. TYPOGRAPHY
   ========================================================================== */
h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl)); }
h2 { font-size: clamp(var(--text-2xl), 3.5vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

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

strong { font-weight: 700; }
em { font-style: italic; }

blockquote {
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-6);
  background: var(--color-primary-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-6) 0;
  font-size: var(--text-lg);
  color: var(--color-text);
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-border-light);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-primary-dark);
}

pre {
  background: var(--color-text);
  color: #e8eaed;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-6) 0;
}

pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: var(--text-sm);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--space-8) 0;
}

/* ==========================================================================
   3. LAYOUT UTILITIES
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container--narrow {
  max-width: var(--content-width);
}

.section {
  padding: var(--space-20) 0;
}

.section--sm {
  padding: var(--space-12) 0;
}

.section--lg {
  padding: var(--space-24) 0;
}

.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

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

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

.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;
}

/* ==========================================================================
   4. BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1.5;
}

.btn--primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26,108,246,0.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}
.btn--ghost:hover {
  background: var(--color-border-light);
  border-color: var(--color-border);
}

.btn--accent {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}
.btn--accent:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(14,203,138,0.3);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* ==========================================================================
   5. BADGES / TAGS
   ========================================================================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.badge--ai-tools    { background: #dbeafe; color: #1d4ed8; }
.badge--learn-ai    { background: #ede9fe; color: #6d28d9; }
.badge--productivity{ background: #d1fae5; color: #065f46; }
.badge--default     { background: var(--color-border-light); color: var(--color-text-muted); }

/* ==========================================================================
   6. SITE HEADER
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-4) 0;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  flex-shrink: 0;
}

.site-logo__mark {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: var(--text-lg);
  font-family: var(--font-body);
}

.site-logo__text {
  font-family: var(--font-body);
  font-weight: 800;
  font-size: var(--text-xl);
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.site-logo__text span {
  color: var(--color-primary);
}

/* Primary Navigation */
.primary-nav {
  display: flex;
  align-items: center;
}

.primary-nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.primary-nav a {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.primary-nav a:hover,
.primary-nav .current-menu-item > a,
.primary-nav .current_page_item > a {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* Header CTA */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

/* ==========================================================================
   7. HERO SECTION
   ========================================================================== */
.hero {
  padding: var(--space-24) 0 var(--space-20);
  background: linear-gradient(160deg, #f0f6ff 0%, #fafafa 60%, #f0fdf8 100%);
  overflow: hidden;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(26,108,246,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(14,203,138,0.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary-light);
  color: var(--color-primary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-6);
}

.hero__eyebrow::before {
  content: '●';
  font-size: 8px;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.1;
  margin-bottom: var(--space-6);
  letter-spacing: -0.03em;
}

.hero__title em {
  font-style: normal;
  color: var(--color-primary);
  position: relative;
}

.hero__description {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: 580px;
  margin-bottom: var(--space-8);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
}

.hero__stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
}

.hero__stat-number {
  display: block;
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-text);
  font-family: var(--font-body);
  letter-spacing: -0.03em;
}

.hero__stat-label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ==========================================================================
   8. SECTION HEADER
   ========================================================================== */
.section-header {
  margin-bottom: var(--space-12);
}

.section-header--center {
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section-header__label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section-header__title {
  margin-bottom: var(--space-4);
}

.section-header__description {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   9. CATEGORY CARDS
   ========================================================================== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.category-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-8);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--cat-color, var(--color-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.category-card:hover::before { transform: scaleX(1); }

.category-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.category-card--ai-tools    { --cat-color: var(--cat-ai-tools); }
.category-card--learn-ai    { --cat-color: var(--cat-learn-ai); }
.category-card--productivity{ --cat-color: var(--cat-productivity); }

.category-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: var(--space-5);
  background: var(--cat-bg, var(--color-primary-light));
}

.category-card--ai-tools    .category-card__icon { background: #dbeafe; }
.category-card--learn-ai    .category-card__icon { background: #ede9fe; }
.category-card--productivity .category-card__icon { background: #d1fae5; }

.category-card__title {
  font-size: var(--text-xl);
  font-weight: 700;
  font-family: var(--font-body);
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.category-card__description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-5);
}

.category-card__count {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-light);
}

/* ==========================================================================
   10. ARTICLE CARDS
   ========================================================================== */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.article-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.article-card__image {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #e0f2fe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 2rem;
  overflow: hidden;
  position: relative;
}

.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card__image img {
  transform: scale(1.05);
}

.article-card__body {
  padding: var(--space-5) var(--space-6) var(--space-6);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.article-card__date {
  font-size: var(--text-xs);
  color: var(--color-text-light);
}

.article-card__title {
  font-size: var(--text-lg);
  font-weight: 700;
  font-family: var(--font-body);
  line-height: 1.35;
  margin-bottom: var(--space-3);
  color: var(--color-text);
  transition: color var(--transition-fast);
  letter-spacing: -0.01em;
}

.article-card:hover .article-card__title {
  color: var(--color-primary);
}

.article-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
  margin-bottom: var(--space-5);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.article-card__read-time {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.read-more-link {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  transition: gap var(--transition-fast);
}

.article-card:hover .read-more-link {
  gap: var(--space-2);
}

/* Featured Article Card (full width) */
.article-card--featured {
  grid-column: 1 / -1;
  flex-direction: row;
}

.article-card--featured .article-card__image {
  width: 45%;
  flex-shrink: 0;
  aspect-ratio: auto;
  min-height: 280px;
}

.article-card--featured .article-card__body {
  padding: var(--space-8);
}

.article-card--featured .article-card__title {
  font-size: var(--text-2xl);
}

/* ==========================================================================
   11. WHY FRESHBRAIN SECTION
   ========================================================================== */
.why-section {
  background: var(--color-text);
  color: #fff;
}

.why-section .section-header__label { color: var(--color-accent); }
.why-section .section-header__title { color: #fff; }
.why-section .section-header__description { color: #9aa0a6; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-12);
}

.feature-item {
  padding: var(--space-8);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.feature-item:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(26,108,246,0.4);
  transform: translateY(-2px);
}

.feature-item__icon {
  width: 48px;
  height: 48px;
  background: rgba(26,108,246,0.15);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: var(--space-5);
}

.feature-item__title {
  font-size: var(--text-lg);
  font-weight: 700;
  font-family: var(--font-body);
  color: #fff;
  margin-bottom: var(--space-2);
}

.feature-item__description {
  font-size: var(--text-sm);
  color: #9aa0a6;
  line-height: 1.7;
}

/* ==========================================================================
   12. NEWSLETTER SECTION
   ========================================================================== */
.newsletter-section {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #f0fdf8 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.newsletter-box {
  max-width: 560px;
  margin: 0 auto;
  text-align: center;
}

.newsletter-box__title {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
  margin-bottom: var(--space-4);
}

.newsletter-box__description {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
}

.newsletter-form {
  display: flex;
  gap: var(--space-3);
  max-width: 440px;
  margin: 0 auto var(--space-4);
}

.newsletter-form input[type="email"] {
  flex: 1;
  padding: var(--space-3) var(--space-5);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  background: #fff;
  transition: border-color var(--transition-fast);
  outline: none;
}

.newsletter-form input[type="email"]:focus {
  border-color: var(--color-primary);
}

.newsletter-trust {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
}

/* ==========================================================================
   13. SITE FOOTER
   ========================================================================== */
.site-footer {
  background: var(--color-text);
  color: #9aa0a6;
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand .site-logo__text {
  color: #fff;
}

.footer-brand__description {
  font-size: var(--text-sm);
  line-height: 1.7;
  margin-top: var(--space-4);
  color: #9aa0a6;
}

.footer-col__title {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  font-family: var(--font-body);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-5);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-col a {
  font-size: var(--text-sm);
  color: #9aa0a6;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: var(--text-sm);
}

.footer-bottom a {
  color: #9aa0a6;
  transition: color var(--transition-fast);
}

.footer-bottom a:hover { color: #fff; }

/* ==========================================================================
   14. PAGE HERO (inner pages)
   ========================================================================== */
.page-hero {
  padding: var(--space-16) 0 var(--space-12);
  background: linear-gradient(160deg, #f0f6ff 0%, #fafafa 100%);
  border-bottom: 1px solid var(--color-border);
}

.page-hero__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-4);
}

.page-hero__breadcrumb a {
  color: var(--color-primary);
  transition: opacity var(--transition-fast);
}

.page-hero__breadcrumb a:hover { opacity: 0.7; }

.page-hero__title {
  margin-bottom: var(--space-4);
}

.page-hero__description {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  max-width: 640px;
}

/* ==========================================================================
   15. BLOG ARCHIVE
   ========================================================================== */
.archive-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-12);
  align-items: start;
}

.archive-posts { }

.posts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  margin-top: var(--space-12);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 500;
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.pagination a:hover,
.pagination .current {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* ==========================================================================
   16. SIDEBAR
   ========================================================================== */
.sidebar {
  position: sticky;
  top: calc(var(--space-16) + var(--space-4));
}

.widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
}

.widget__title {
  font-size: var(--text-base);
  font-weight: 700;
  font-family: var(--font-body);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border-light);
  color: var(--color-text);
}

.widget-categories li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.widget-categories li:last-child { border-bottom: none; }

.widget-categories a {
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.widget-categories a:hover { color: var(--color-primary); }

.widget-categories .count {
  font-size: var(--text-xs);
  color: var(--color-text-light);
  background: var(--color-border-light);
  padding: 1px 8px;
  border-radius: var(--radius-full);
}

.widget-posts-list li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.widget-posts-list li:last-child { border-bottom: none; }

.widget-posts-list a {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  display: block;
  transition: color var(--transition-fast);
}

.widget-posts-list a:hover { color: var(--color-primary); }

.widget-posts-list .post-date {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  margin-top: var(--space-1);
}

/* ==========================================================================
   17. SINGLE POST
   ========================================================================== */
.single-layout {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-12);
  align-items: start;
}

.single-article { max-width: var(--content-width); }

.article-header {
  margin-bottom: var(--space-8);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.article-meta__author {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
}

.article-meta__avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: var(--text-xs);
  font-weight: 700;
}

.article-meta__separator {
  color: var(--color-border);
}

.article-meta__date,
.article-meta__read-time {
  font-size: var(--text-sm);
  color: var(--color-text-light);
}

.article-title {
  font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-6);
}

.article-intro {
  font-size: var(--text-xl);
  color: var(--color-text-muted);
  line-height: 1.6;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

/* Featured Image */
.article-featured-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #e0f2fe 100%);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: center;
}

.article-featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Table of Contents */
.toc {
  background: var(--color-border-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-8) 0;
}

.toc__title {
  font-size: var(--text-base);
  font-weight: 700;
  font-family: var(--font-body);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.toc ol {
  list-style: decimal;
  padding-left: var(--space-5);
  counter-reset: none;
}

.toc li {
  padding: var(--space-1) 0;
}

.toc a {
  font-size: var(--text-sm);
  color: var(--color-primary);
  transition: opacity var(--transition-fast);
}

.toc a:hover { opacity: 0.7; }

/* Article Content */
.entry-content {
  font-size: var(--text-lg);
  line-height: 1.8;
  color: var(--color-text);
}

.entry-content h2 {
  font-size: clamp(var(--text-2xl), 3vw, var(--text-3xl));
  margin: var(--space-10) 0 var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-light);
}

.entry-content h3 {
  font-size: var(--text-2xl);
  margin: var(--space-8) 0 var(--space-4);
}

.entry-content h4 {
  font-size: var(--text-xl);
  margin: var(--space-6) 0 var(--space-3);
  font-family: var(--font-body);
}

.entry-content ul,
.entry-content ol {
  margin: var(--space-4) 0 var(--space-6) var(--space-6);
}

.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }

.entry-content li {
  margin-bottom: var(--space-2);
}

.entry-content a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.entry-content a:hover { opacity: 0.8; }

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

/* FAQ Section */
.faq-section {
  margin: var(--space-10) 0;
}

.faq-section__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
  transition: background var(--transition-fast);
}

.faq-question:hover { background: var(--color-border-light); }

.faq-question .icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  transition: transform var(--transition-base);
}

.faq-item.is-open .faq-question .icon {
  transform: rotate(45deg);
}

.faq-answer {
  display: none;
  padding: 0 var(--space-6) var(--space-5);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

.faq-item.is-open .faq-answer { display: block; }

/* Related Posts */
.related-posts {
  margin: var(--space-12) 0;
  padding-top: var(--space-10);
  border-top: 1px solid var(--color-border);
}

.related-posts__title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-6);
}

.related-posts__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

/* Article Footer / Tags */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-8) 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-light);
}

.tag-link {
  padding: var(--space-1) var(--space-3);
  background: var(--color-border-light);
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  transition: all var(--transition-fast);
}

.tag-link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Share Buttons */
.share-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: var(--space-6) 0;
}

.share-buttons__label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
}

.share-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: opacity var(--transition-fast);
}

.share-btn:hover { opacity: 0.85; }
.share-btn--twitter { background: #1d9bf0; color: #fff; }
.share-btn--linkedin { background: #0a66c2; color: #fff; }
.share-btn--copy { background: var(--color-border-light); color: var(--color-text); }

/* ==========================================================================
   18. FORMS
   ========================================================================== */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,108,246,0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 140px;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-light);
}

/* ==========================================================================
   19. ABOUT PAGE
   ========================================================================== */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.about-image {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #e0f2fe 100%);
  border-radius: var(--radius-xl);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  margin-top: var(--space-12);
}

.value-card {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.value-card__icon {
  font-size: 2rem;
  margin-bottom: var(--space-3);
}

.value-card__title {
  font-size: var(--text-base);
  font-weight: 700;
  font-family: var(--font-body);
  margin-bottom: var(--space-2);
}

.value-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   20. PRIVACY POLICY
   ========================================================================== */
.policy-content {
  max-width: var(--content-width);
  margin: 0 auto;
}

.policy-content h2 {
  font-size: var(--text-2xl);
  margin: var(--space-10) 0 var(--space-4);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border-light);
}

.policy-content h2:first-child {
  border-top: none;
  padding-top: 0;
  margin-top: 0;
}

.policy-content p, .policy-content li {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.policy-content ul {
  list-style: disc;
  padding-left: var(--space-6);
  margin: var(--space-4) 0;
}

.policy-content li { margin-bottom: var(--space-2); }

/* ==========================================================================
   21. BREADCRUMBS
   ========================================================================== */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-4);
}

.breadcrumbs a {
  color: var(--color-primary);
  transition: opacity var(--transition-fast);
}

.breadcrumbs a:hover { opacity: 0.7; }

.breadcrumbs__separator { color: var(--color-border); }

/* ==========================================================================
   22. NOTICE / ALERT
   ========================================================================== */
.notice {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  margin: var(--space-6) 0;
  display: flex;
  gap: var(--space-3);
}

.notice--info {
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border: 1px solid #93c5fd;
}

.notice--success {
  background: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

/* ==========================================================================
   23. RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .archive-layout,
  .single-layout {
    grid-template-columns: 1fr;
  }

  .sidebar { position: static; }

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

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

  .related-posts__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .primary-nav,
  .header-cta { display: none; }

  .menu-toggle { display: flex; }

  .primary-nav.is-open {
    display: flex;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: var(--space-8);
    border-top: 1px solid var(--color-border);
    z-index: 99;
    overflow-y: auto;
  }

  .primary-nav.is-open ul {
    flex-direction: column;
    gap: var(--space-1);
    width: 100%;
  }

  .primary-nav.is-open a {
    font-size: var(--text-base);
    padding: var(--space-4);
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .article-card--featured {
    flex-direction: column;
  }

  .article-card--featured .article-card__image {
    width: 100%;
    min-height: 200px;
    aspect-ratio: 16/9;
  }

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

  .footer-grid { grid-template-columns: 1fr; }

  .hero__stats { display: none; }

  .newsletter-form {
    flex-direction: column;
  }

  .newsletter-form input[type="email"] {
    width: 100%;
  }

  .features-grid,
  .related-posts__grid {
    grid-template-columns: 1fr;
  }

  .posts-grid { grid-template-columns: 1fr; }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-3);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }

  .section { padding: var(--space-12) 0; }
  .section--lg { padding: var(--space-16) 0; }
}

/* ==========================================================================
   24. UTILITIES
   ========================================================================== */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0,0,0,0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* Skip link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  transition: top var(--transition-fast);
  z-index: 200;
}

.skip-link:focus { top: 0; }

/* WP Alignment */
.alignleft { float: left; margin: 0 var(--space-6) var(--space-4) 0; }
.alignright { float: right; margin: 0 0 var(--space-4) var(--space-6); }
.aligncenter { display: block; margin: var(--space-6) auto; }
.alignwide { margin-left: -var(--space-8); margin-right: -var(--space-8); }

/* Clearfix */
.clearfix::after { content: ''; display: table; clear: both; }