/* ============================================
   RHINOLAB 3D BLOG — GLOBAL STYLES
   Koyu tema, Inter font, gradient vurgular
   ============================================ */

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

/* === CSS CUSTOM PROPERTIES === */
:root {
  --bg-primary: #0f172a;
  --bg-card: #1e293b;
  --bg-card-alt: #1a2332;
  --bg-card-gradient: linear-gradient(145deg, #1e293b, #1a2332);
  --border: #334155;
  --border-hover: #60a5fa;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-heading: #f8fafc;
  --accent-blue: #60a5fa;
  --accent-blue-dark: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #a78bfa;
  --accent-pink: #f472b6;
  --accent-green: #22c55e;
  --accent-green-light: #4ade80;
  --accent-yellow: #eab308;
  --accent-orange: #f97316;
  --gradient-hero: linear-gradient(135deg, #1e3a5f 0%, #0f172a 50%, #1a1a2e 100%);
  --gradient-brand: linear-gradient(135deg, #3b82f6, #8b5cf6);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
  --radius-card: 16px;
  --radius-small: 12px;
  --radius-pill: 50px;
  --max-width: 1200px;
  --nav-height: 70px;
}

/* === RESET === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', sans-serif;
  background: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.8;
  min-height: 100vh;
}
a { color: var(--accent-blue); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--accent-purple-light); }
img { max-width: 100%; display: block; }


/* === NAVIGATION === */
.main-nav {
  position: fixed;
  top: 32px;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 30px;
  background: transparent;
  transition: background 0.3s, box-shadow 0.3s;
}
.main-nav.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  border-bottom: 1px solid rgba(51,65,85,0.5);
}
.nav-brand {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-logo {
  height: 36px;
  width: auto;
  border-radius: 6px;
  -webkit-text-fill-color: initial;
}

/* === TOP BAR === */
.top-bar {
  background: linear-gradient(90deg, #1a1a2e, #16213e);
  border-bottom: 1px solid var(--border);
  padding: 6px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1001;
  height: 32px;
}
.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.top-bar-logo {
  height: 20px;
  width: auto;
  border-radius: 3px;
}
.top-bar strong {
  color: var(--accent-purple-light);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--accent-blue); }

/* Mega Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a { cursor: pointer; }
.mega-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(30, 41, 59, 0.98);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  min-width: 680px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  z-index: 100;
}
.nav-dropdown:hover .mega-dropdown,
.nav-dropdown.active .mega-dropdown { display: block; }
.mega-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.mega-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-small);
  color: var(--text-secondary);
  font-size: 0.88rem;
  transition: background 0.2s;
}
.mega-item:hover {
  background: rgba(96,165,250,0.1);
  color: var(--text-primary);
}
.mega-item .mega-icon { font-size: 1.2rem; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
}
.hamburger span {
  width: 26px;
  height: 2.5px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: calc(var(--nav-height) + 32px);
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.98);
  backdrop-filter: blur(16px);
  padding: 30px;
  overflow-y: auto;
  z-index: 999;
}
.mobile-menu.active { display: block; }
.mobile-menu a {
  display: block;
  padding: 14px 0;
  color: var(--text-secondary);
  font-size: 1.05rem;
  font-weight: 500;
  border-bottom: 1px solid rgba(51,65,85,0.3);
}
.mobile-menu a:hover { color: var(--accent-blue); }
.mobile-cat-title {
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-top: 20px;
  margin-bottom: 8px;
}


/* === HERO SECTION === */
.hero {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: var(--gradient-hero);
  margin-top: calc(var(--nav-height) + 32px);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(37,99,235,0.3), rgba(139,92,246,0.2), rgba(244,114,182,0.2));
  opacity: 0.6;
}
.hero-content { position: relative; z-index: 2; padding: 60px 20px; max-width: 800px; }
.hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #60a5fa, #a78bfa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
  line-height: 1.2;
}
.hero p { font-size: 1.15rem; color: var(--text-muted); max-width: 650px; margin: 0 auto 24px; }
.hero-badge {
  display: inline-block;
  background: rgba(96,165,250,0.15);
  border: 1px solid rgba(96,165,250,0.3);
  color: var(--accent-blue);
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-cta {
  display: inline-block;
  padding: 14px 36px;
  background: var(--gradient-brand);
  color: #fff;
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--radius-pill);
  transition: transform 0.3s, box-shadow 0.3s;
}
.hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.4);
  color: #fff;
}

/* === STATS BAR === */
.stats-bar {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 40px;
  padding: 24px 20px;
  background: rgba(30, 41, 59, 0.6);
  border-bottom: 1px solid var(--border);
}
.stat-item { text-align: center; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.85rem; color: var(--text-muted); }

/* === CONTAINER === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 50px 20px; }
.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 12px;
}
.section-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 36px;
}


/* === CATEGORY CARDS === */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.category-card {
  background: var(--bg-card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: all 0.3s;
  display: block;
  color: var(--text-secondary);
}
.category-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 30px rgba(96,165,250,0.12);
  transform: translateY(-4px);
  color: var(--text-secondary);
}
.category-icon { font-size: 2rem; margin-bottom: 12px; }
.category-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 6px;
}
.category-card p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 10px; }
.category-count {
  font-size: 0.8rem;
  color: var(--accent-blue);
  font-weight: 600;
}

/* === ARTICLE CARDS === */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.article-card {
  background: var(--bg-card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  border-color: var(--border-hover);
  box-shadow: 0 0 25px rgba(96,165,250,0.1);
  transform: translateY(-3px);
}
.article-card-badge {
  display: inline-block;
  background: rgba(96,165,250,0.12);
  color: var(--accent-blue);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
  align-self: flex-start;
}
.article-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}
.article-card h3 a { color: var(--text-primary); }
.article-card h3 a:hover { color: var(--accent-blue); }
.article-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 14px;
  flex: 1;
}
.article-meta {
  display: flex;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.article-meta span { display: flex; align-items: center; gap: 4px; }

/* Featured Cards */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.featured-card {
  background: var(--bg-card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}
.featured-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
}
.featured-card:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 0 30px rgba(139,92,246,0.15);
  transform: translateY(-4px);
}
.featured-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 10px;
}
.featured-card h3 a { color: var(--text-heading); }
.featured-card h3 a:hover { color: var(--accent-purple-light); }
.featured-card p { font-size: 0.9rem; color: var(--text-muted); }


/* === BRAND SECTION === */
.brand-section {
  background: var(--bg-card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 48px;
  text-align: center;
  margin: 40px 0;
}
.brand-section h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 16px;
}
.brand-values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 30px;
}
.brand-value { text-align: center; }
.brand-value-icon { font-size: 2rem; margin-bottom: 10px; }
.brand-value h4 { color: var(--text-primary); font-weight: 600; margin-bottom: 6px; }
.brand-value p { font-size: 0.88rem; color: var(--text-muted); }

/* === TAGS SECTION === */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.tag-pill {
  display: inline-block;
  padding: 8px 18px;
  background: rgba(96,165,250,0.08);
  border: 1px solid rgba(96,165,250,0.2);
  border-radius: var(--radius-pill);
  color: var(--accent-blue);
  font-size: 0.85rem;
  font-weight: 500;
  transition: all 0.3s;
}
.tag-pill:hover {
  background: rgba(96,165,250,0.15);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
}

/* === BREADCRUMB === */
.breadcrumb {
  padding: 20px 0;
  padding-top: calc(var(--nav-height) + 52px);
  font-size: 0.88rem;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent-blue); }
.breadcrumb .sep { margin: 0 8px; color: var(--border); }

/* === CATEGORY HEADER === */
.category-header {
  text-align: center;
  padding: 40px 0;
}
.category-header .cat-icon { font-size: 3rem; margin-bottom: 16px; }
.category-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 12px;
}
.category-header p { color: var(--text-muted); max-width: 600px; margin: 0 auto 12px; }
.category-header .cat-count {
  color: var(--accent-blue);
  font-weight: 600;
  font-size: 0.9rem;
}


/* === ARTICLE LAYOUT (main + sidebar) === */
.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* Article Content */
.article-content {}
.article-header { margin-bottom: 32px; }
.article-header h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 16px;
  line-height: 1.3;
}
.article-info {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.article-info span { display: flex; align-items: center; gap: 4px; }
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  margin: 36px 0 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}
.article-body h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: #818cf8;
  margin: 28px 0 12px;
}
.article-body h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin: 20px 0 8px;
}
.article-body p {
  margin-bottom: 14px;
  color: var(--text-secondary);
  text-align: justify;
}
.article-body ul, .article-body ol {
  margin: 12px 0 18px 24px;
  color: var(--text-secondary);
}
.article-body li { margin-bottom: 8px; }
.article-body strong { color: var(--text-primary); }
.article-body blockquote {
  border-left: 4px solid var(--accent-purple);
  padding: 16px 20px;
  margin: 18px 0;
  background: rgba(139,92,246,0.06);
  border-radius: 0 var(--radius-small) var(--radius-small) 0;
  color: var(--text-secondary);
  font-style: italic;
}

/* === SIDEBAR === */
.sidebar {
  position: sticky;
  top: calc(var(--nav-height) + 20px);
  align-self: start;
}
.sidebar-box {
  background: var(--bg-card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  margin-bottom: 20px;
}
.sidebar-box h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.sidebar-link {
  display: block;
  padding: 8px 0;
  color: var(--text-muted);
  font-size: 0.88rem;
  border-bottom: 1px solid rgba(51,65,85,0.3);
  transition: color 0.2s;
}
.sidebar-link:hover { color: var(--accent-blue); }
.sidebar-link:last-child { border-bottom: none; }


/* === CONTENT BOXES === */
.box {
  padding: 18px 22px;
  border-radius: var(--radius-small);
  margin: 18px 0;
  font-size: 0.95rem;
  line-height: 1.7;
}
.box strong { display: block; margin-bottom: 6px; }
.box-info {
  background: rgba(96,165,250,0.08);
  border-left: 4px solid var(--accent-blue-dark);
}
.box-info strong { color: var(--accent-blue); }
.box-tip {
  background: rgba(34,197,94,0.08);
  border-left: 4px solid var(--accent-green);
}
.box-tip strong { color: var(--accent-green-light); }
.box-warning {
  background: rgba(234,179,8,0.08);
  border-left: 4px solid var(--accent-yellow);
}
.box-warning strong { color: #facc15; }
.box-purple {
  background: rgba(139,92,246,0.08);
  border-left: 4px solid var(--accent-purple);
}
.box-purple strong { color: var(--accent-purple-light); }
.box-rhinolab {
  background: linear-gradient(135deg, rgba(59,130,246,0.08), rgba(139,92,246,0.12));
  border-left: 4px solid var(--accent-purple);
  border: 1px solid rgba(139,92,246,0.2);
  border-left: 4px solid var(--accent-purple);
  position: relative;
}
.box-rhinolab strong { color: var(--accent-purple-light); }
.box-rhinolab::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
  border-radius: var(--radius-small) var(--radius-small) 0 0;
}

/* === TABLES === */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 18px 0;
  font-size: 0.92rem;
}
table th, table td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}
table th {
  background: linear-gradient(135deg, var(--accent-blue-dark), #6366f1);
  color: #fff;
  font-weight: 600;
}
table tr:nth-child(even) { background: rgba(51,65,85,0.3); }
table tr:hover { background: rgba(96,165,250,0.08); }

/* === COMPARE GRID === */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 18px 0;
}
.compare-card {
  background: rgba(30,41,59,0.8);
  border: 1px solid #475569;
  border-radius: var(--radius-small);
  padding: 20px;
}
.compare-card h4 { margin: 0 0 10px; color: var(--text-primary); }
.compare-card.highlight {
  border-color: var(--accent-green);
  background: rgba(34,197,94,0.05);
}

/* === CHECKLIST === */
.checklist { list-style: none; margin-left: 0 !important; }
.checklist li {
  padding: 8px 0 8px 32px;
  position: relative;
}
.checklist li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-green);
  font-weight: 700;
  font-size: 1.1rem;
}

/* === SECTION IMAGE DIVIDERS === */
.section-image {
  width: 100%;
  height: 110px;
  border-radius: var(--radius-card);
  margin: 40px 0 20px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  position: relative;
  overflow: hidden;
}
.section-image.si-1 { background: linear-gradient(135deg, #1e3a5f, #2563eb, #7c3aed); }
.section-image.si-2 { background: linear-gradient(135deg, #065f46, #059669, #34d399); }
.section-image.si-3 { background: linear-gradient(135deg, #7c2d12, #ea580c, #fbbf24); }
.section-image.si-4 { background: linear-gradient(135deg, #4c1d95, #7c3aed, #c084fc); }
.section-image span { position: relative; z-index: 2; text-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.section-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

/* === INLINE IMAGE PLACEHOLDERS === */
.inline-img {
  width: 100%;
  height: 90px;
  border-radius: var(--radius-small);
  margin: 18px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  position: relative;
  overflow: hidden;
}
.inline-img.ii-filament { background: linear-gradient(135deg, #1e40af, #3b82f6, #93c5fd); }
.inline-img.ii-printer { background: linear-gradient(135deg, #064e3b, #10b981, #6ee7b7); }
.inline-img.ii-edu { background: linear-gradient(135deg, #78350f, #f59e0b, #fde68a); }
.inline-img.ii-deco { background: linear-gradient(135deg, #581c87, #a855f7, #d8b4fe); }
.inline-img.ii-tools { background: linear-gradient(135deg, #0c4a6e, #0ea5e9, #7dd3fc); }
.inline-img.ii-settings { background: linear-gradient(135deg, #831843, #ec4899, #fbcfe8); }
.inline-img.ii-hobby { background: linear-gradient(135deg, #365314, #84cc16, #d9f99d); }
.inline-img span { position: relative; z-index: 2; text-shadow: 0 4px 12px rgba(0,0,0,0.3); }
.inline-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='0.05' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
}


/* === STEP GUIDE === */
.step-guide { margin: 24px 0; }
.step {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}
.step-number {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-brand);
  border-radius: 50%;
  color: #fff;
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}
.step-content { flex: 1; }
.step-content h4 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 4px;
}
.step-content p { color: var(--text-muted); font-size: 0.92rem; }

/* === PREV/NEXT NAVIGATION === */
.prev-next {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 40px 0;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}
.prev-next a {
  display: block;
  background: var(--bg-card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  padding: 20px;
  transition: all 0.3s;
}
.prev-next a:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}
.prev-next .label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.prev-next .title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}
.prev-next .next { text-align: right; }

/* === SHARE SECTION === */
.share-section {
  margin: 30px 0;
  padding: 20px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.share-section h3 {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.share-buttons { display: flex; gap: 10px; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 500;
  color: #fff;
  transition: opacity 0.3s;
}
.share-btn:hover { opacity: 0.85; color: #fff; }
.share-btn.twitter { background: #1da1f2; }
.share-btn.facebook { background: #1877f2; }
.share-btn.linkedin { background: #0a66c2; }
.share-btn.whatsapp { background: #25d366; }

/* === FOOTER === */
.main-footer {
  border-top: 1px solid var(--border);
  padding: 50px 20px 30px;
  background: rgba(15, 23, 42, 0.6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.footer-col h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.footer-col p { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 8px; }
.footer-col a {
  display: block;
  color: var(--text-muted);
  font-size: 0.88rem;
  padding: 4px 0;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--accent-blue); }
.footer-bottom {
  text-align: center;
  padding: 24px 0 0;
  margin-top: 30px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}
.footer-brand {
  font-weight: 700;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}


/* === RESPONSIVE === */
@media (max-width: 1024px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .article-layout { grid-template-columns: 1fr 280px; gap: 24px; }
  .mega-dropdown { min-width: 500px; }
  .mega-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-values { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .hero h1 { font-size: 2rem; }
  .hero { min-height: 380px; }
  .categories-grid { grid-template-columns: 1fr; }
  .articles-grid { grid-template-columns: 1fr; }
  .featured-grid { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .compare-grid { grid-template-columns: 1fr; }
  .prev-next { grid-template-columns: 1fr; }
  .stats-bar { flex-direction: column; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .brand-values { grid-template-columns: 1fr; }
  .share-buttons { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 1.6rem; }
  .hero-content { padding: 40px 16px; }
  .container { padding: 30px 16px; }
  .section-title { font-size: 1.4rem; }
  .article-header h1 { font-size: 1.5rem; }
  .category-header h1 { font-size: 1.5rem; }
  .main-nav { padding: 0 16px; }
  .section-image { height: 80px; font-size: 1.4rem; }
  .inline-img { height: 70px; font-size: 1.2rem; }
  .top-bar { font-size: 0.7rem; }
  .top-bar-logo { height: 16px; }
  .nav-logo { height: 28px; }
}


/* === RHINOLAB ÜRÜN KARTLARI === */
.rhinolab-products-section {
  margin: 40px 0;
  padding: 32px;
  background: linear-gradient(145deg, rgba(30,41,59,0.8), rgba(26,35,50,0.9));
  border: 1px solid rgba(139,92,246,0.25);
  border-radius: var(--radius-card);
  position: relative;
  overflow: hidden;
}
.rhinolab-products-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}
.products-header {
  text-align: center;
  margin-bottom: 24px;
}
.products-header h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 6px;
}
.products-header p {
  font-size: 0.88rem;
  color: var(--text-muted);
}
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.product-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  background: rgba(15,23,42,0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  transition: all 0.3s;
  color: var(--text-secondary);
}
.product-card:hover {
  border-color: var(--accent-purple);
  background: rgba(139,92,246,0.06);
  transform: translateY(-2px);
  color: var(--text-secondary);
}
.product-icon {
  font-size: 1.6rem;
  min-width: 40px;
  text-align: center;
}
.product-info {
  flex: 1;
  min-width: 0;
}
.product-info h4 {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
  line-height: 1.3;
}
.product-specs {
  font-size: 0.75rem;
  color: var(--text-muted);
}
.product-price {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent-green-light);
  margin-top: 2px;
}
.product-cta {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-purple-light);
  white-space: nowrap;
}
.products-footer {
  text-align: center;
  margin-top: 20px;
}
.products-all-link {
  display: inline-block;
  padding: 10px 28px;
  background: var(--gradient-brand);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--radius-pill);
  transition: transform 0.3s, box-shadow 0.3s;
}
.products-all-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(59,130,246,0.3);
  color: #fff;
}

@media (max-width: 768px) {
  .products-grid { grid-template-columns: 1fr; }
  .rhinolab-products-section { padding: 20px; }
}
@media (max-width: 480px) {
  .product-card { padding: 12px; gap: 10px; }
  .product-info h4 { font-size: 0.82rem; }
}


/* === RHINOLAB FİLAMENT KATALOG KARTLARI === */
.filament-catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}
.filament-catalog-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card-gradient);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
  color: var(--text-secondary);
}
.filament-catalog-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}
.filament-catalog-card:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 0 30px rgba(139,92,246,0.15);
  transform: translateY(-4px);
  color: var(--text-secondary);
}
.fcc-icon { font-size: 2rem; margin-bottom: 12px; }
.fcc-body { flex: 1; }
.fcc-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 6px;
}
.fcc-feature {
  font-size: 0.88rem;
  color: var(--accent-purple-light);
  font-weight: 500;
  margin-bottom: 12px;
}
.fcc-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
}
.fcc-cold {
  color: var(--accent-green-light);
  font-weight: 600;
}
.fcc-cta {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-blue);
}
.filament-catalog-card:hover .fcc-cta { color: var(--accent-purple-light); }

/* === FİLAMENT DETAY SAYFASI === */
.filament-hero {
  text-align: center;
  padding: 40px 20px;
  background: var(--gradient-hero);
  margin-top: calc(var(--nav-height) + 32px);
}
.filament-hero h1 {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #60a5fa, #a78bfa, #f472b6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.filament-hero .fh-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 20px;
}
.filament-hero .fh-badges {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}
.fh-badge {
  display: inline-block;
  background: rgba(96,165,250,0.12);
  border: 1px solid rgba(96,165,250,0.25);
  color: var(--accent-blue);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
}
.fh-badge.green { background: rgba(34,197,94,0.12); border-color: rgba(34,197,94,0.25); color: var(--accent-green-light); }
.fh-badge.purple { background: rgba(139,92,246,0.12); border-color: rgba(139,92,246,0.25); color: var(--accent-purple-light); }

.spec-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
  margin: 24px 0;
}
.spec-card {
  background: rgba(30,41,59,0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-small);
  padding: 20px;
  text-align: center;
}
.spec-card .sc-value {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.spec-card .sc-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--gradient-brand);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-pill);
  transition: transform 0.3s, box-shadow 0.3s;
  margin: 8px 4px;
}
.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59,130,246,0.4);
  color: #fff;
}

@media (max-width: 768px) {
  .filament-catalog-grid { grid-template-columns: 1fr; }
  .filament-hero h1 { font-size: 1.6rem; }
  .spec-cards { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .spec-cards { grid-template-columns: 1fr; }
}