/*
Theme Name: Tech Aether - Astra Child
Theme URI: https://www.techaether.net
Description: Custom child theme for Tech Aether military & space technology blog
Author: Joseph Reed
Author URI: https://www.techaether.net
Template: astra
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: techaether-child
*/

/* ============================================
   CSS VARIABLES - DESIGN SYSTEM
   ============================================ */

:root {
  /* Dark Theme Colors */
  --primary-dark: #0a0e27;
  --secondary-dark: #1a1f3a;
  --accent-blue: #2e5c8a;
  --accent-teal: #4a9ca6;

  /* Text Colors */
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --text-dim: #5f6368;

  /* Border & Divider Colors */
  --border-subtle: #2d3748;
  --border-accent: #4a9ca6;

  /* Status Colors */
  --success: #34d399;
  --warning: #fbbf24;
  --danger: #f87171;

  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'Courier New', Courier, monospace;

  /* Spacing */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;

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

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);

  /* Content Width */
  --content-width: 720px;
  --site-width: 1400px;
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

body {
  background-color: var(--primary-dark);
  color: var(--text-primary);
  font-family: var(--font-primary);
  font-size: 18px;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a:hover {
  color: #6bc5cf;
  text-decoration: underline;
}

/* Selection */
::selection {
  background-color: var(--accent-blue);
  color: white;
}

/* ============================================
   HEADER STYLES
   ============================================ */

.site-header {
  background-color: var(--secondary-dark);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.site-branding .site-title {
  font-size: 28px;
  font-weight: 700;
  margin: 0;
  color: var(--text-primary);
}

.site-branding .site-description {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* Main Navigation */
.main-navigation {
  background-color: transparent;
}

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

.main-navigation a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  display: block;
  transition: color 0.2s ease;
}

.main-navigation a:hover {
  color: var(--accent-teal);
  text-decoration: none;
}

.main-navigation .current-menu-item a {
  color: var(--accent-teal);
  border-bottom: 2px solid var(--accent-teal);
}

/* ============================================
   HOMEPAGE STYLES
   ============================================ */

.homepage-hero {
  background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--primary-dark) 100%);
  padding: var(--spacing-2xl) var(--spacing-md);
  border-bottom: 1px solid var(--border-subtle);
}

.hero-content {
  max-width: var(--site-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero-featured-article {
  background-color: var(--secondary-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-featured-article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hero-newsletter-box {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-teal) 100%);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  text-align: center;
  color: white;
}

/* Latest Stories Grid */
.latest-stories {
  max-width: var(--site-width);
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.stories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.story-card {
  background-color: var(--secondary-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-subtle);
}

.story-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-teal);
}

.story-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.story-card-content {
  padding: var(--spacing-md);
}

.story-card-category {
  font-size: 12px;
  color: var(--accent-teal);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.story-card-title {
  font-size: 20px;
  font-weight: 600;
  margin: var(--spacing-xs) 0;
  color: var(--text-primary);
  line-height: 1.4;
}

.story-card-excerpt {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-top: var(--spacing-sm);
}

/* ============================================
   ARTICLE PAGE STYLES
   ============================================ */

.article-layout {
  max-width: var(--site-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
  display: grid;
  grid-template-columns: 250px 1fr 320px;
  gap: var(--spacing-xl);
  align-items: start;
}

/* Article Header */
.article-header {
  grid-column: 2;
  margin-bottom: var(--spacing-xl);
}

.article-category-label {
  font-size: 13px;
  color: var(--accent-teal);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-sm);
  display: inline-block;
}

.article-title {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.2;
  margin: var(--spacing-sm) 0;
  color: var(--text-primary);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 15px;
  color: var(--text-secondary);
  margin-top: var(--spacing-md);
}

.article-meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* BLUF Box */
.article-bluf {
  background-color: var(--secondary-dark);
  border-left: 4px solid var(--accent-blue);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0 var(--spacing-xl);
  border-radius: var(--radius-sm);
}

.article-bluf-label {
  font-size: 12px;
  color: var(--accent-blue);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-sm);
  display: block;
}

.article-bluf-content {
  font-size: 19px;
  line-height: 1.7;
  color: var(--text-primary);
  font-weight: 500;
}

/* Table of Contents (Left Sidebar) */
.article-toc {
  position: sticky;
  top: 100px;
  background-color: var(--secondary-dark);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.article-toc-title {
  font-size: 14px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
  letter-spacing: 0.5px;
}

.article-toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-toc li {
  margin-bottom: var(--spacing-xs);
}

.article-toc a {
  font-size: 14px;
  color: var(--text-secondary);
  display: block;
  padding: 6px 0;
  transition: color 0.2s ease;
}

.article-toc a:hover,
.article-toc a.active {
  color: var(--accent-teal);
  text-decoration: none;
}

/* Article Body */
.article-body {
  max-width: var(--content-width);
  grid-column: 2;
}

.article-body h2 {
  font-size: 32px;
  font-weight: 700;
  margin-top: 56px;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  line-height: 1.3;
}

.article-body h3 {
  font-size: 24px;
  font-weight: 600;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.article-body h4 {
  font-size: 20px;
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.article-body p {
  margin-bottom: 28px;
  line-height: 1.8;
}

.article-body ul,
.article-body ol {
  margin-bottom: 28px;
  padding-left: var(--spacing-lg);
}

.article-body li {
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.article-body blockquote {
  border-left: 4px solid var(--accent-blue);
  padding-left: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  font-style: italic;
  color: var(--text-secondary);
}

.article-body code {
  background-color: var(--secondary-dark);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--accent-teal);
}

.article-body pre {
  background-color: var(--secondary-dark);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-lg) 0;
  border: 1px solid var(--border-subtle);
}

.article-body pre code {
  background: none;
  padding: 0;
  color: var(--text-primary);
}

.article-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) 0;
}

.article-body figure {
  margin: var(--spacing-lg) 0;
}

.article-body figcaption {
  font-size: 14px;
  color: var(--text-dim);
  text-align: center;
  margin-top: var(--spacing-sm);
  font-style: italic;
}

/* Newsletter Inline Form */
.newsletter-inline {
  background: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-teal) 100%);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin: var(--spacing-xl) 0;
  text-align: center;
  color: white;
}

.newsletter-inline h3 {
  font-size: 22px;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
  color: white;
}

.newsletter-inline p {
  font-size: 16px;
  margin-bottom: var(--spacing-md);
  opacity: 0.95;
  color: white;
}

/* Resources Section */
.article-resources {
  background-color: var(--secondary-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
}

.article-resources h3 {
  font-size: 20px;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.article-resources-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.article-resources-list li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.article-resources-list li:last-child {
  border-bottom: none;
}

.article-resources-title {
  font-weight: 600;
  color: var(--accent-teal);
  font-size: 16px;
}

.article-resources-description {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}

.article-resources-disclosure {
  font-size: 12px;
  color: var(--text-dim);
  margin-top: var(--spacing-md);
  font-style: italic;
}

/* Sidebar (Right Column) */
.article-sidebar {
  position: sticky;
  top: 100px;
  grid-column: 3;
}

.sidebar-widget {
  background-color: var(--secondary-dark);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.sidebar-widget-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

/* ============================================
   FOOTER STYLES
   ============================================ */

.site-footer {
  background-color: var(--secondary-dark);
  border-top: 1px solid var(--border-subtle);
  padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-widgets {
  max-width: var(--site-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-widget-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.footer-widget ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-widget a {
  color: var(--text-secondary);
  font-size: 14px;
}

.footer-bottom {
  max-width: var(--site-width);
  margin: 0 auto;
  text-align: center;
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border-subtle);
  color: var(--text-dim);
  font-size: 14px;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1200px) {
  .article-layout {
    grid-template-columns: 1fr 320px;
  }

  .article-toc {
    display: none;
  }

  .article-header,
  .article-body {
    grid-column: 1;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 16px;
  }

  .hero-content {
    grid-template-columns: 1fr;
  }

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

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    position: static;
  }

  .article-title {
    font-size: 32px;
  }

  .article-body h2 {
    font-size: 26px;
    margin-top: var(--spacing-xl);
  }

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

  .main-navigation ul {
    flex-direction: column;
    gap: 0;
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.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); }