/*
 * IVKOVIC.DE — Full Newspaper Portal Stylesheet
 * ============================================================
 * All colors use CSS custom properties for dark-mode support.
 * Dark mode is toggled via .dark class on <body>.
 * ============================================================
 */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@600;700;800;900&family=Inter:wght@300;400;500;600;700&display=swap');

/* ── CSS Variables ───────────────────────────────────────── */

:root {
  /* ── Cosmic Deep Blue Theme (default) ──────────────────── */
  --bg: #141D33;
  --bg-gradient: linear-gradient(135deg, #141D33 0%, #251550 35%, #1B2D50 100%);
  --bg-card: rgba(255, 255, 255, 0.09);
  --bg-card-solid: #1A2340;
  --card-border: rgba(255, 255, 255, 0.12);
  --card-blur: blur(14px);
  --text: #EEF1F8;
  --text-secondary: #B8C6E0;
  --text-muted: #8595B5;
  --accent: #8B5CF6;
  --accent-hover: #7C3AED;
  --accent-secondary: #06B6D4;
  --border: rgba(139, 92, 246, 0.20);
  --border-light: rgba(255, 255, 255, 0.09);
  --nav-bg: rgba(20, 29, 51, 0.78);
  --sidebar-bg: rgba(255, 255, 255, 0.06);
  --skeleton-base: rgba(255, 255, 255, 0.07);
  --skeleton-shine: rgba(255, 255, 255, 0.14);
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.22);
  --shadow-hover: 0 8px 32px rgba(139, 92, 246, 0.22);
  --glow: 0 0 28px rgba(139, 92, 246, 0.18);
  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --max-width: 1520px;
}

body.dark {
  /* Dark mode — deeper but still luminous */
  --bg: #0E1528;
  --bg-gradient: linear-gradient(135deg, #0E1528 0%, #1A0E3A 35%, #122040 100%);
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-solid: #141C35;
  --card-border: rgba(255, 255, 255, 0.08);
  --text: #E6EBF4;
  --text-secondary: #A0B2D0;
  --text-muted: #6E80A0;
  --accent: #A78BFA;
  --accent-hover: #8B5CF6;
  --accent-secondary: #22D3EE;
  --border: rgba(167, 139, 250, 0.17);
  --border-light: rgba(255, 255, 255, 0.06);
  --nav-bg: rgba(14, 21, 40, 0.82);
  --sidebar-bg: rgba(255, 255, 255, 0.04);
  --skeleton-base: rgba(255, 255, 255, 0.06);
  --skeleton-shine: rgba(255, 255, 255, 0.12);
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 8px 32px rgba(167, 139, 250, 0.20);
  --glow: 0 0 28px rgba(167, 139, 250, 0.15);
}

/* ── Reset & Base ────────────────────────────────────────── */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background: var(--bg);
  background-image: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  transition: background 0.5s, color 0.3s;
  min-height: 100vh;
  position: relative;
}

/* Subtle animated gradient orbs in the background */
body::before {
  content: "";
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse 800px 800px at 15% 15%, rgba(139, 92, 246, 0.16) 0%, transparent 65%),
    radial-gradient(ellipse 700px 700px at 85% 40%, rgba(6, 182, 212, 0.12) 0%, transparent 65%),
    radial-gradient(ellipse 600px 600px at 45% 85%, rgba(139, 92, 246, 0.10) 0%, transparent 65%),
    radial-gradient(ellipse 450px 450px at 75% 10%, rgba(34, 211, 238, 0.08) 0%, transparent 60%);
  animation: orb-drift 25s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: 0;
}

@keyframes orb-drift {
  0%   { transform: translate(0, 0) rotate(0deg); }
  50%  { transform: translate(30px, -20px) rotate(2deg); }
  100% { transform: translate(-20px, 30px) rotate(-1deg); }
}

/* Ensure all content sits above the orbs */
body > * {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

ul, ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ── Top Bar ─────────────────────────────────────────────── */

.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  font-size: 0.8rem;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border-light);
  max-width: var(--max-width);
  margin: 0 auto;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

#theme-toggle {
  font-size: 1.3rem;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background 0.2s;
  color: var(--text-muted);
}

#theme-toggle:hover {
  background: var(--border-light);
}

/* ── Masthead ────────────────────────────────────────────── */

.masthead {
  text-align: center;
  padding: 20px 24px 12px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.masthead h1 {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: 4px;
  color: var(--text);
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.masthead .tagline {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 2px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* ── Navigation ──────────────────────────────────────────── */

.main-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  position: relative;
}

.nav-inner {
  display: flex;
  justify-content: center;
  gap: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.nav-link {
  display: block;
  padding: 12px 20px;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-secondary);
  transition: color 0.2s;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Double-rule decoration */
.double-rule {
  max-width: var(--max-width);
  margin: 0 auto;
  border: none;
  border-top: 1px solid var(--border);
  margin-top: 3px;
}

/* Hamburger for mobile */
.nav-toggle {
  display: none;
  font-size: 1.5rem;
  padding: 12px 20px;
  color: var(--text);
}

/* ── Layout Container ────────────────────────────────────── */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.main-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  margin-top: 28px;
}

.main-content {
  min-width: 0;
}

/* ── Hero Section ────────────────────────────────────────── */

.hero {
  margin-bottom: 32px;
}

.hero-main {
  display: block;
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  margin-bottom: 16px;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s;
}

.hero-main:hover {
  box-shadow: var(--shadow-hover);
}

.hero-img-wrap {
  width: 100%;
  height: 420px;
  overflow: hidden;
}

.hero-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 60px 30px 28px;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  color: #FFFFFF;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 10px 0 8px;
}

.hero-excerpt {
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hero-meta {
  display: flex;
  gap: 12px;
  font-size: 0.8rem;
  opacity: 0.75;
  margin-top: 8px;
}

.hero-secondary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.hero-sub {
  display: flex;
  gap: 14px;
  background: var(--bg-card);
  backdrop-filter: var(--card-blur);
  -webkit-backdrop-filter: var(--card-blur);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.2s, border-color 0.3s;
}

.hero-sub:hover {
  box-shadow: var(--shadow-hover), var(--glow);
  transform: translateY(-2px);
  border-color: rgba(139, 92, 246, 0.25);
}

.hero-sub-img {
  width: 180px;
  min-height: 130px;
  flex-shrink: 0;
  overflow: hidden;
}

.hero-sub-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-sub-body {
  padding: 14px 14px 14px 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.hero-sub-body h2 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 6px 0 4px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hero-sub-body .hero-meta {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* ── Article Grid ────────────────────────────────────────── */

.article-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* ── Article Card ────────────────────────────────────────── */

.card {
  background: var(--bg-card);
  backdrop-filter: var(--card-blur);
  -webkit-backdrop-filter: var(--card-blur);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.2s, border-color 0.3s;
}

.card:hover {
  box-shadow: var(--shadow-hover), var(--glow);
  transform: translateY(-4px);
  border-color: rgba(139, 92, 246, 0.25);
}

.card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-img-wrap {
  width: 100%;
  height: 180px;
  overflow: hidden;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

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

.card-body {
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card-meta-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.cat-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #FFFFFF;
}

.breaking-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  display: inline-block;
  animation: pulse-dot 1.5s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-excerpt {
  font-size: 0.83rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 10px;
  font-size: 0.73rem;
  color: var(--text-muted);
}

.card-source {
  font-weight: 600;
}

/* ── Sidebar ─────────────────────────────────────────────── */

.sidebar {
  position: sticky;
  top: 24px;
  align-self: start;
}

.sidebar-section {
  background: var(--sidebar-bg);
  backdrop-filter: var(--card-blur);
  -webkit-backdrop-filter: var(--card-blur);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 20px;
}

.sidebar-heading {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 8px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-list li {
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-list li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.sidebar-list a {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
  transition: color 0.2s;
}

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

.sidebar-time {
  display: block;
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.trending-list {
  counter-reset: trend;
}

.trending-list li {
  counter-increment: trend;
  padding-left: 28px;
  position: relative;
}

.trending-list li::before {
  content: counter(trend);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.source-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.source-chip {
  display: inline-block;
  padding: 4px 10px;
  background: var(--bg-card);
  backdrop-filter: var(--card-blur);
  border: 1px solid var(--card-border);
  border-radius: 20px;
  font-size: 0.7rem;
  color: var(--text-secondary);
  cursor: default;
  transition: border-color 0.2s;
}

.source-chip:hover {
  border-color: var(--accent);
}

/* ── Source Filter Chips (Category Page) ──────────────────── */

.source-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.filter-chip {
  padding: 6px 16px;
  border: 1px solid var(--card-border);
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  backdrop-filter: var(--card-blur);
  transition: all 0.2s;
}

.filter-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.filter-chip.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  color: #FFFFFF;
  border-color: transparent;
  box-shadow: 0 2px 10px rgba(139, 92, 246, 0.3);
}

/* ── Load More ───────────────────────────────────────────── */

.load-more-wrap {
  text-align: center;
  margin: 36px 0 20px;
}

.btn-load-more {
  padding: 12px 36px;
  background: var(--bg-card);
  backdrop-filter: var(--card-blur);
  border: 1px solid var(--card-border);
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text);
  transition: all 0.3s;
}

.btn-load-more:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--glow);
}

/* ── Article Detail Page ─────────────────────────────────── */

.article-detail {
  max-width: 820px;
  margin: 36px auto;
}

.article-detail-header {
  margin-bottom: 24px;
}

.article-detail-title {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 12px 0 16px;
}

.article-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-author {
  font-weight: 600;
  color: var(--text-secondary);
}

.article-detail-img {
  margin-bottom: 28px;
  border-radius: 10px;
  overflow: hidden;
}

.article-detail-img img {
  width: 100%;
  max-height: 480px;
  object-fit: cover;
}

.article-detail-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.btn-read-original {
  display: inline-block;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  color: #FFFFFF;
  border-radius: 8px;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.3s;
  box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-read-original:hover {
  box-shadow: 0 6px 25px rgba(139, 92, 246, 0.5);
  transform: translateY(-1px);
}

.share-buttons {
  display: flex;
  gap: 10px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.share-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.share-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.related-articles {
  max-width: 820px;
  margin: 48px auto 36px;
}

.related-articles h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 8px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

/* ── Category Page ───────────────────────────────────────── */

.category-header {
  margin: 28px 0 24px;
}

.category-header h2 {
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 800;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
  padding-bottom: 6px;
}

/* ── Original Article Badge & Styles ────────────────────── */

.original-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: #FFFFFF;
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

.article-badges {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.seo-score-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--accent-secondary);
  border: 1px solid var(--accent-secondary);
  background: rgba(6, 182, 212, 0.08);
}

.seo-score-value {
  font-size: 0.75rem;
  font-weight: 800;
}

.seo-score-label {
  opacity: 0.75;
}

/* Original article body — full HTML rendering */
.article-original-body {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-original-body h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--text);
}

.article-original-body h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  margin: 24px 0 10px;
  color: var(--text);
}

.article-original-body p {
  margin-bottom: 16px;
}

.article-original-body blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 20px;
  margin: 20px 0;
  font-style: italic;
  color: var(--text-muted);
}

.article-original-body ul,
.article-original-body ol {
  margin: 16px 0;
  padding-left: 24px;
  list-style: disc;
}

.article-original-body ol {
  list-style: decimal;
}

.article-original-body li {
  margin-bottom: 8px;
}

.article-original-body strong {
  color: var(--text);
  font-weight: 700;
}

/* Media gallery for generated images */
.original-media-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin: 28px 0;
}

.original-media-item {
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.3s, transform 0.2s;
}

.original-media-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.original-media-item img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Video player for generated video */
.original-video-wrap {
  margin: 28px 0;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.original-video-wrap video {
  width: 100%;
  display: block;
}

/* Card-level "Original" indicator */
.card .original-badge {
  font-size: 0.55rem;
  padding: 2px 7px;
}

/* ── Error / Empty States ────────────────────────────────── */

.error-state,
.empty-state {
  text-align: center;
  padding: 80px 20px;
}

.error-state h2,
.empty-state h2 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.error-state p,
.empty-state p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.btn-retry {
  display: inline-block;
  padding: 10px 28px;
  background: var(--accent);
  color: #FFFFFF;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: background 0.2s;
}

.btn-retry:hover {
  background: var(--accent-hover);
}

/* ── Footer ──────────────────────────────────────────────── */

.site-footer {
  margin-top: 48px;
  border-top: 1px solid var(--border);
  background: var(--nav-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 28px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.2s;
}

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

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── Responsive ──────────────────────────────────────────── */

/* Wide desktop — use the extra space */
@media (min-width: 1400px) {
  .article-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .main-layout {
    grid-template-columns: 1fr 340px;
  }

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

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

/* Tablet */
@media (max-width: 1024px) {
  .main-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }

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

  .hero-img-wrap {
    height: 320px;
  }

  .hero-title {
    font-size: 1.6rem;
  }
}

/* ── AI Tools Section Layout ─────────────────────────────── */

.ai-tools-layout {
  display: flex;
  max-width: var(--max-width);
  margin: 0 auto;
  min-height: calc(100vh - 320px);
  align-items: flex-start;
}

.ai-tools-sidebar {
  width: 240px;
  flex-shrink: 0;
  padding: 28px 0 40px;
  border-right: 1px solid var(--border-light);
  background: var(--sidebar-bg);
  position: sticky;
  top: 0;
  align-self: flex-start;
  min-height: calc(100vh - 320px);
}

.ai-tools-sidebar-title {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--text-muted);
  padding: 0 14px 14px;
  border-bottom: 1px solid var(--border-light);
  margin: 0 0 12px;
}

.ai-tools-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  margin: 5px 12px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--card-border);
  border-radius: 10px;
  background: transparent;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  white-space: nowrap;
}

.ai-tools-link:hover {
  color: var(--text);
  background: rgba(139, 92, 246, 0.08);
  border-color: rgba(139, 92, 246, 0.45);
  box-shadow: 0 2px 14px rgba(139, 92, 246, 0.13);
  transform: translateX(3px);
}

.ai-tools-link.active {
  color: var(--accent);
  background: rgba(139, 92, 246, 0.11);
  border-color: var(--accent);
  box-shadow: 0 0 18px rgba(139, 92, 246, 0.20);
  font-weight: 600;
}

.ai-tools-link-icon {
  font-size: 1rem;
  flex-shrink: 0;
  opacity: 0.85;
}

.ai-tools-main {
  flex: 1;
  min-width: 0;
}

/* Collapse sidebar to a horizontal tab-bar on mobile */
@media (max-width: 768px) {
  .ai-tools-layout {
    flex-direction: column;
  }

  .ai-tools-sidebar {
    width: 100%;
    min-height: unset;
    padding: 0;
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    display: flex;
    flex-direction: row;
    align-items: center;
    position: static;
  }

  .ai-tools-sidebar-title {
    display: none;
  }

  .ai-tools-link {
    flex: 1;
    justify-content: center;
    padding: 8px 10px;
    margin: 6px 5px;
    font-size: 0.78rem;
    border-radius: 8px;
    transform: none !important;
  }

  .ai-tools-link:hover,
  .ai-tools-link.active {
    transform: none !important;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .masthead h1 {
    font-size: 1.8rem;
    letter-spacing: 2px;
  }

  .masthead .tagline {
    font-size: 0.7rem;
  }

  /* Hamburger menu */
  .nav-toggle {
    display: block;
    text-align: center;
  }

  .nav-inner {
    display: none;
    flex-direction: column;
    align-items: center;
  }

  .nav-inner.open {
    display: flex;
  }

  .nav-link {
    padding: 10px 16px;
    width: 100%;
    text-align: center;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .hero-img-wrap {
    height: 240px;
  }

  .hero-title {
    font-size: 1.3rem;
  }

  .hero-excerpt {
    -webkit-line-clamp: 2;
  }

  .hero-sub {
    flex-direction: row;
  }

  .hero-sub-img {
    width: 120px;
    min-height: 100px;
  }

  .hero-sub-body h2 {
    font-size: 0.9rem;
  }

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

  .article-detail-title {
    font-size: 1.6rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .top-bar {
    flex-direction: column;
    gap: 4px;
  }

  .container {
    padding: 0 14px;
  }
}
