/* ==========================================================================
   CALIBERSOFT - Ultra Design System & Stylesheet (Premium Enterprise)
   Replicated after nCube.com for CALIBERSOFTWAREs.com
   ========================================================================== */

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

:root {
  /* Color Palette */
  --primary: #E84F1C;
  --primary-hover: #D33F0F;
  --primary-light: rgba(232, 79, 28, 0.12);
  --primary-border: rgba(232, 79, 28, 0.3);
  --primary-glow: rgba(232, 79, 28, 0.25);
  
  --secondary: #0F171C;
  --secondary-light: #18232C;
  --secondary-surface: #1E2D39;
  
  --dark-bg: #0A0F13;
  --dark-surface: #121B22;
  --dark-card: #18242D;
  --dark-border: rgba(255, 255, 255, 0.09);
  
  --text-main: #19252A;
  --text-secondary: #4A5568;
  --text-muted: #718096;
  --text-white: #FFFFFF;
  
  --bg-light: #FFFFFF;
  --bg-alt: #F8FAFC;
  --bg-subtle: #F1F5F9;
  
  --border-light: #E2E8F0;
  --border-subtle: #EDF2F7;

  --accent-green: #10B981;
  --accent-blue: #3B82F6;
  --accent-purple: #8B5CF6;
  
  /* Typography */
  --font-heading: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-code: 'Fira Code', monospace;
  
  /* Transitions & Shadows */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 45px rgba(0, 0, 0, 0.14);
  --shadow-dark: 0 25px 60px rgba(0, 0, 0, 0.6);
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --container-max: 1240px;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--text-main);
  background-color: var(--bg-light);
  line-height: 1.65;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.22;
  color: var(--secondary);
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08);
  padding: 2px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo img {
  height: 36px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  position: relative;
  padding: 8px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

/* Nav Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 12px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-light);
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-item {
  display: block;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
}

.nav-dropdown-item:hover, .nav-dropdown-item.active {
  background-color: var(--bg-alt);
  color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-white);
  box-shadow: 0 4px 14px rgba(232, 79, 28, 0.35);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232, 79, 28, 0.45);
}

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

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

.btn-dark {
  background-color: var(--secondary);
  color: var(--text-white);
}

.btn-dark:hover {
  background-color: #000;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

/* Mobile Navigation Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--secondary);
  margin: 5px 0;
  transition: all var(--transition-fast);
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  height: 100vh;
  background-color: var(--secondary);
  color: var(--text-white);
  z-index: 2000;
  padding: 40px 24px;
  box-shadow: var(--shadow-dark);
  transition: right var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.mobile-drawer.active {
  right: 0;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}

.mobile-close-btn {
  background: none;
  border: none;
  color: #fff;
  font-size: 1.8rem;
  cursor: pointer;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
  overflow-y: auto;
}

.mobile-nav-links a {
  font-size: 1.1rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
}

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

.drawer-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.drawer-backdrop.active {
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  position: relative;
  background-color: var(--dark-bg);
  color: var(--text-white);
  padding: 160px 0 100px;
  overflow: hidden;
  background-image: radial-gradient(circle at 80% 20%, rgba(232, 79, 28, 0.22) 0%, transparent 45%),
                    radial-gradient(circle at 20% 80%, rgba(30, 43, 55, 0.6) 0%, transparent 55%);
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 840px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(232, 79, 28, 0.15);
  border: 1px solid rgba(232, 79, 28, 0.35);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 24px;
  letter-spacing: -1px;
  line-height: 1.15;
}

.hero-title span {
  color: var(--primary);
  background: linear-gradient(135deg, #FF6B3B 0%, #E84F1C 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  max-width: 700px;
  line-height: 1.6;
}

.hero-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.hero-stat-card {
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--dark-border);
  padding: 24px;
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  transition: transform var(--transition-fast);
}

.hero-stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 79, 28, 0.4);
}

.hero-stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
}

.hero-stat-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
}

.hero-grid-bg {
  position: absolute;
  top: 0;
  right: -10%;
  width: 60%;
  height: 100%;
  background-size: 40px 40px;
  background-image: linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  mask-image: radial-gradient(circle at center, black 0%, transparent 80%);
  z-index: 1;
}

/* ==========================================================================
   Section Components
   ========================================================================== */
.section {
  padding: 100px 0;
}

.section-alt {
  background-color: var(--bg-alt);
}

.section-dark {
  background-color: var(--dark-bg);
  color: var(--text-white);
}

.section-dark h2, .section-dark h3 {
  color: var(--text-white);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 60px;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

.section-dark .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   Client Marquee Ticker
   ========================================================================== */
.client-marquee {
  background-color: var(--secondary);
  padding: 40px 0;
  overflow: hidden;
  border-top: 1px solid var(--dark-border);
  border-bottom: 1px solid var(--dark-border);
}

.marquee-track {
  display: flex;
  align-items: center;
  gap: 60px;
  width: max-content;
  animation: marquee 30s linear infinite;
}

.marquee-item {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: all var(--transition-fast);
}

.marquee-item:hover {
  opacity: 1;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ==========================================================================
   Model Cards & Developer Cards
   ========================================================================== */
.models-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.model-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.model-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.model-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 24px;
}

.model-title {
  font-size: 1.35rem;
  margin-bottom: 14px;
}

.model-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--primary);
  font-size: 0.95rem;
}

.link-arrow:hover {
  gap: 12px;
}

.dev-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.dev-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.dev-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-border);
}

.dev-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.dev-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  object-fit: cover;
}

.dev-info h4 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.dev-role {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 700;
}

.dev-exp {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.dev-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.skill-tag {
  background: var(--bg-alt);
  border: 1px solid var(--border-light);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

/* ==========================================================================
   Code Snippet & Tech Matrix Widget (New Component)
   ========================================================================== */
.code-preview-box {
  background: var(--dark-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--dark-border);
  overflow: hidden;
  box-shadow: var(--shadow-dark);
  font-family: var(--font-code);
  margin: 30px 0;
}

.code-header {
  background: var(--dark-surface);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--dark-border);
}

.code-dots {
  display: flex;
  gap: 6px;
}

.code-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.code-dot-red { background: #FF5F56; }
.code-dot-yellow { background: #FFBD2E; }
.code-dot-green { background: #27C93F; }

.code-body {
  padding: 24px;
  color: #A9B7C6;
  font-size: 0.9rem;
  line-height: 1.7;
  overflow-x: auto;
}

.code-body .keyword { color: #CC7832; font-weight: 600; }
.code-body .string { color: #6A8759; }
.code-body .func { color: #FFC66D; }
.code-body .comment { color: #808080; font-style: italic; }

/* ==========================================================================
   Security & Compliance Section
   ========================================================================== */
.security-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.security-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  padding: 28px 20px;
  border-radius: var(--radius-md);
  text-align: center;
  transition: transform var(--transition-fast);
}

.security-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
}

.security-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.security-title {
  font-size: 1.1rem;
  color: #fff;
  margin-bottom: 8px;
}

.security-desc {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
}

/* ==========================================================================
   Timeline / Roadmap Stepper
   ========================================================================== */
.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}

.timeline-step {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  position: relative;
}

.timeline-step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.timeline-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}

/* ==========================================================================
   FAQ Accordions
   ========================================================================== */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--primary);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
  content: '-';
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 20px;
}

/* ==========================================================================
   Stat Counter Grid ("Numbers You Should Know")
   ========================================================================== */
.stats-banner {
  background: linear-gradient(135deg, var(--secondary) 0%, #17242F 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  margin: 60px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item-number {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-item-label {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 8px;
}

/* ==========================================================================
   Case Studies / Portfolio Cards
   ========================================================================== */
.filter-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
  background: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  background-color: var(--secondary);
  color: #fff;
  border-color: var(--secondary);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.case-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.case-card-img {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.case-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.case-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(16, 24, 32, 0.85);
  color: #fff;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.case-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.case-card-title {
  font-size: 1.25rem;
  margin-bottom: 10px;
}

.case-card-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 20px;
  flex-grow: 1;
}

.case-card-metric {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
  margin-top: auto;
}

.metric-val {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
}

.metric-lbl {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Blog & Article Styles
   ========================================================================== */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.blog-card {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}

.blog-img {
  height: 200px;
  overflow: hidden;
}

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

.blog-content {
  padding: 24px;
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.blog-title {
  font-size: 1.2rem;
  margin-bottom: 12px;
}

.blog-title a:hover {
  color: var(--primary);
}

/* Detail Article Layout */
.article-header {
  padding: 140px 0 60px;
  background-color: var(--bg-alt);
  text-align: center;
}

.article-title {
  font-size: 3rem;
  max-width: 900px;
  margin: 0 auto 20px;
}

.article-body-wrapper {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 50px;
  padding: 60px 0;
}

.article-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 1.8rem;
  margin: 40px 0 20px;
  color: var(--secondary);
}

.article-content p {
  margin-bottom: 24px;
}

.article-content img {
  border-radius: var(--radius-md);
  margin: 30px 0;
}

.article-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.sidebar-box {
  background: var(--bg-alt);
  border-radius: var(--radius-md);
  padding: 24px;
  border: 1px solid var(--border-light);
  margin-bottom: 24px;
}

/* ==========================================================================
   Contact Modal & Form Styling
   ========================================================================== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(16, 24, 32, 0.75);
  backdrop-filter: blur(6px);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 640px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 40px;
  position: relative;
  box-shadow: var(--shadow-dark);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-alt);
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232, 79, 28, 0.15);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
  background-color: var(--secondary);
  color: #fff;
  padding: 80px 0 30px;
  border-top: 1px solid var(--dark-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.65);
  margin: 20px 0;
  max-width: 320px;
}

.footer-title {
  color: #fff;
  font-size: 1.1rem;
  margin-bottom: 20px;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
}

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

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--dark-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-title { font-size: 3rem; }
  .models-grid, .portfolio-grid, .blog-grid, .dev-card-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid, .security-grid, .timeline { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .article-body-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .header-inner { height: 70px; }
  .nav-menu { display: none; }
  .mobile-toggle { display: block; }
  .hero { padding: 120px 0 60px; }
  .hero-title { font-size: 2.3rem; }
  .hero-stats-row { grid-template-columns: 1fr; }
  .models-grid, .portfolio-grid, .blog-grid, .dev-card-grid, .security-grid, .timeline { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
  .modal-content { padding: 24px; }
}