/* =====================================================
   KARSTEN TECHNOLOGIES — Design System
   Dark-mode Vercel/Linear-inspired aesthetic
   ===================================================== */

/* ===== 1. CSS Variables ===== */
:root {
  /* Backgrounds */
  --bg-primary: #0a0a0b;
  --bg-surface: #111113;
  --bg-elevated: #161618;
  --bg-footer: #080809;

  /* Accents */
  --accent-cyan: #3b82f6;
  --accent-purple: #10b981;
  --gradient-primary: linear-gradient(135deg, #3b82f6, #10b981);

  /* Text */
  --text-primary: #f0f0f0;
  --text-secondary: rgba(255,255,255,0.65);
  --text-muted: rgba(255,255,255,0.35);

  /* Borders */
  --border-subtle: rgba(255,255,255,0.06);
  --border-hover: rgba(255,255,255,0.12);

  /* Effects */
  --glow-cyan: 0 0 20px rgba(59,130,246,0.15);
  --glow-gradient: 0 0 30px rgba(59,130,246,0.2), 0 0 60px rgba(16,185,129,0.1);

  /* States */
  --success: #22c55e;
  --error: #ef4444;
  --focus-ring: 0 0 0 3px rgba(59,130,246,0.3);

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;
  --radius-card: 16px;
  --radius-pill: 100px;

  /* Transitions */
  --transition: 0.3s ease;
  --transition-slow: 0.6s ease;
}

/* ===== 2. Reset & Base ===== */
*, *::before, *::after {
  margin: 0; padding: 0; box-sizing: border-box;
}
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-height); }
body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  background: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }
h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  color: var(--text-primary);
  line-height: 1.2;
  font-weight: 700;
}
h1 { font-size: 4rem; font-weight: 800; letter-spacing: -0.02em; line-height: 1.1; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.35rem; }
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ===== 3. Noise Texture Overlay ===== */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* ===== 4. Utilities ===== */
.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-divider {
  height: 1px;
  max-width: 600px;
  margin: 0 auto;
  background: linear-gradient(90deg, transparent, var(--border-subtle), transparent);
}

/* ===== 5. Navbar ===== */
.navbar {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--nav-height);
  background: transparent;
  z-index: 100;
  transition: background var(--transition), backdrop-filter var(--transition), border-color var(--transition);
  border-bottom: 1px solid transparent;
}
.navbar.scrolled {
  background: rgba(10,10,11,0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border-subtle);
}
.navbar .container {
  display: flex; align-items: center; justify-content: space-between; height: 100%;
}
.nav-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800; font-size: 1.15rem; letter-spacing: 0.5px;
  color: var(--text-primary); cursor: pointer;
}
.nav-logo .logo-icon {
  width: 38px; height: 38px;
  background: var(--gradient-primary);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-weight: 900; font-size: 1.1rem;
}
.nav-logo .accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.nav-links {
  display: flex; align-items: center; gap: 32px;
}
.nav-links a {
  font-size: 0.925rem; font-weight: 500;
  color: rgba(255,255,255,0.6);
  position: relative; padding: 8px 4px; cursor: pointer;
  transition: color var(--transition);
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition);
}
.nav-links a:hover, .nav-links a.active { color: #ffffff; }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-cta {
  background: var(--gradient-primary);
  color: white !important;
  padding: 10px 24px !important;
  border-radius: var(--radius-pill);
  font-weight: 600; cursor: pointer;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
  transition: box-shadow var(--transition), transform var(--transition);
}
.nav-cta:hover {
  box-shadow: var(--glow-gradient);
  transform: translateY(-1px);
}
.nav-cta::after { display: none !important; }

/* ===== 6. Hamburger ===== */
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; padding: 4px; background: none; border: none;
}
.hamburger span {
  width: 26px; height: 2.5px;
  background: var(--text-primary);
  border-radius: 2px; transition: var(--transition);
}
.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); }

/* ===== 7. Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 24px; border-radius: var(--radius-pill);
  font-weight: 600; font-size: 1rem; cursor: pointer;
  transition: all var(--transition);
  border: none; font-family: inherit;
}
.btn-primary {
  background: var(--gradient-primary); color: white;
}
.btn-primary:hover {
  box-shadow: var(--glow-gradient);
  transform: translateY(-2px) scale(1.02);
}
.btn-outline {
  background: transparent; color: white;
  border: 1px solid var(--border-hover);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.25);
  transform: translateY(-2px);
}
.btn-ghost {
  background: transparent; color: transparent; position: relative;
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  border: none; padding: 14px 32px;
}
.btn-ghost::before {
  content: ''; position: absolute; inset: 0;
  border-radius: var(--radius-pill);
  padding: 1.5px;
  background: var(--gradient-primary);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
}
.btn-ghost:hover {
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.btn-ghost:hover::before {
  background: var(--gradient-primary);
}
.btn-secondary {
  background: transparent; color: var(--accent-cyan);
  border: 1px solid var(--accent-cyan);
}
.btn-secondary:hover {
  background: rgba(59,130,246,0.1);
  transform: translateY(-2px);
}
.btn-white {
  background: white; color: var(--bg-primary);
  font-weight: 700;
}
.btn-white:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 4px 20px rgba(255,255,255,0.2);
}

/* ===== 8. Cards ===== */
.card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  padding: 32px;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition);
  cursor: pointer;
}
.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}
.card-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
  color: white; font-size: 1rem;
}
.card h3 { margin-bottom: 10px; }
.card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* ===== 9. Sections ===== */
.section { padding: 80px 0; }
.section-header { text-align: center; margin-bottom: 56px; }
.section-header h2 { margin-bottom: 12px; }
.section-header p {
  color: var(--text-muted); font-size: 1.05rem;
  max-width: 600px; margin: 0 auto;
}
.section-label {
  display: inline-block;
  font-size: 0.8rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: 2px;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

/* ===== 10. Tags ===== */
.tag {
  padding: 4px 12px;
  background: rgba(59,130,246,0.1);
  color: var(--accent-cyan);
  border-radius: 20px;
  font-size: 0.75rem; font-weight: 600;
}

/* ===== 11. Hero ===== */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: var(--nav-height);
  position: relative; overflow: hidden;
  background: var(--bg-primary);
}
.hero-orbs { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.hero-orb {
  position: absolute; border-radius: 50%;
  filter: blur(100px);
}
.hero-orb--cyan {
  width: 600px; height: 600px;
  background: rgba(59,130,246,0.15);
  top: -20%; right: -10%;
  animation: orbDrift1 18s ease-in-out infinite alternate;
}
.hero-orb--purple {
  width: 500px; height: 500px;
  background: rgba(16,185,129,0.12);
  bottom: -25%; left: -5%;
  animation: orbDrift2 22s ease-in-out infinite alternate;
}
.hero-orb--small {
  width: 300px; height: 300px;
  background: rgba(59,130,246,0.08);
  top: 40%; left: 50%;
  animation: orbDrift3 15s ease-in-out infinite alternate;
}
@keyframes orbDrift1 {
  from { transform: translate(0, 0); }
  to { transform: translate(-80px, 60px); }
}
@keyframes orbDrift2 {
  from { transform: translate(0, 0); }
  to { transform: translate(60px, -40px); }
}
@keyframes orbDrift3 {
  from { transform: translate(0, 0); }
  to { transform: translate(-40px, -60px); }
}
.hero .container { position: relative; z-index: 2; }
.hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 40px;
  width: 100%;
}
.hero-content { max-width: 600px; text-align: left; }
.hero h1 {
  color: var(--text-primary);
  margin-bottom: 20px;
}
.hero p {
  color: var(--text-secondary);
  font-size: 1.2rem;
  margin-bottom: 36px;
  max-width: 560px;
}
.hero-buttons {
  display: flex; gap: 16px; flex-wrap: wrap;
}
.hero-globe {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.hero-globe canvas {
  width: 100%;
  max-width: 520px;
  height: auto;
  aspect-ratio: 1;
}

/* Hero entrance animations */
.hero-content h1,
.hero-content p,
.hero-buttons {
  opacity: 0;
  transform: translateY(24px);
  animation: heroFadeUp 0.8s ease forwards;
}
.hero-content h1 { animation-delay: 0.2s; }
.hero-content p { animation-delay: 0.4s; }
.hero-buttons { animation-delay: 0.6s; }
.hero-globe {
  opacity: 0;
  transform: scale(0.9);
  animation: heroGlobeIn 1s ease forwards 0.3s;
}
@keyframes heroFadeUp {
  to { opacity: 1; transform: translateY(0); }
}
@keyframes heroGlobeIn {
  to { opacity: 1; transform: scale(1); }
}

/* ===== 12. Stats Bar ===== */
.stats-bar {
  background: var(--bg-primary);
  padding: 48px 0;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 32px; text-align: center;
}
.stat-item .stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem; font-weight: 800; line-height: 1;
  margin-bottom: 6px;
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-item .stat-label {
  font-size: 0.9rem; color: var(--text-muted); font-weight: 500;
}
.stat-number { font-variant-numeric: tabular-nums; }

/* ===== 13. Grids ===== */
.services-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.projects-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
}

/* ===== 14. Project Cards ===== */
.project-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  transition: all var(--transition);
  cursor: pointer;
  display: flex;
}
.project-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}
.project-card-accent {
  width: 4px; flex-shrink: 0;
}
.project-card-accent--web { background: var(--accent-cyan); }
.project-card-accent--mobile { background: var(--accent-purple); }
.project-card-accent--windows { background: #10b981; }
.project-card-accent--websites { background: #f59e0b; }
.project-card-img {
  width: 80px; flex-shrink: 0;
  background: var(--bg-elevated);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted); font-size: 1.8rem;
}
.project-card-body { padding: 24px; flex: 1; }
.project-card-body h3 { margin-bottom: 4px; font-size: 1.15rem; }
.project-card-body .project-client {
  font-size: 0.85rem; color: var(--accent-cyan);
  font-weight: 500; margin-bottom: 10px;
}
.project-card-body p {
  font-size: 0.9rem; color: var(--text-muted); margin-bottom: 14px;
}
.project-tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ===== 15. Filter Tabs & Tech Tabs ===== */
.filter-tabs {
  display: flex; justify-content: center; gap: 12px;
  margin-bottom: 40px; flex-wrap: wrap;
}
.filter-tab {
  padding: 12px 24px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-pill);
  background: transparent;
  font-weight: 600; font-size: 0.9rem;
  cursor: pointer; transition: all var(--transition);
  font-family: inherit; color: var(--text-secondary);
  min-height: 44px;
}
.filter-tab:hover { border-color: var(--border-hover); color: var(--text-primary); }
.filter-tab.active {
  background: var(--gradient-primary);
  color: white; border-color: transparent;
}
.tech-tabs {
  display: flex; justify-content: center; gap: 8px;
  margin-bottom: 40px; flex-wrap: wrap;
}
.tech-tab {
  padding: 12px 20px; border: none;
  background: var(--bg-surface);
  border-radius: var(--radius-pill);
  font-weight: 600; font-size: 0.85rem;
  cursor: pointer; transition: all var(--transition);
  font-family: inherit; color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
  min-height: 44px;
}
.tech-tab:hover { border-color: var(--border-hover); color: var(--text-primary); }
.tech-tab.active {
  background: var(--gradient-primary);
  color: white; border-color: transparent;
}
.tech-content { display: none; }
.tech-content.active {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 20px;
}
.tech-item {
  display: flex; align-items: center; gap: 16px;
  padding: 20px;
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition);
}
.tech-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}
.tech-item-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-size: 1.1rem; color: white;
}
.tech-item-info h4 { font-size: 1rem; margin-bottom: 2px; }
.tech-item-info p { font-size: 0.85rem; color: var(--text-muted); }

/* ===== 16. Footer ===== */
.footer {
  background: var(--bg-footer);
  color: rgba(255,255,255,0.5);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px; margin-bottom: 48px;
}
.footer-brand .nav-logo { color: var(--text-primary); margin-bottom: 16px; }
.footer-brand p { font-size: 0.9rem; line-height: 1.7; margin-bottom: 20px; }
.footer h4 { color: var(--text-primary); font-size: 1rem; margin-bottom: 20px; }
.footer ul li { margin-bottom: 10px; }
.footer ul li a {
  font-size: 0.9rem; color: rgba(255,255,255,0.4);
  transition: color var(--transition); cursor: pointer;
}
.footer ul li a:hover { color: var(--accent-cyan); }
.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding: 24px 0; text-align: center; font-size: 0.85rem;
}
.contact-socials { display: flex; gap: 14px; margin-top: 24px; }
.contact-socials a {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary); font-size: 1.1rem;
  transition: all var(--transition); cursor: pointer;
}
.contact-socials a:hover {
  border-color: var(--accent-cyan); color: var(--accent-cyan);
  transform: translateY(-2px);
}

/* ===== 17. Page Hero (sub-pages) ===== */
.page-hero {
  background: var(--bg-primary);
  padding: 140px 0 80px;
  text-align: center;
  position: relative;
}
.page-hero::after {
  content: '';
  position: absolute; top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(59,130,246,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero h1 { color: var(--text-primary); margin-bottom: 16px; }
.page-hero p { color: var(--text-secondary); font-size: 1.15rem; max-width: 600px; margin: 0 auto; }
.page-hero .section-label { position: relative; z-index: 1; }

/* ===== 18. Service Card Hover Example ===== */
.service-card { position: relative; overflow: hidden; }
.service-card .card-example {
  margin-top: 14px; padding-top: 14px;
  border-top: 1px dashed var(--border-subtle);
  font-size: 0.85rem; color: var(--accent-cyan);
  font-style: italic;
  opacity: 0; transform: translateY(8px);
  transition: all var(--transition);
}
.service-card:hover .card-example { opacity: 1; transform: translateY(0); }

/* ===== 19. Vision & Mission ===== */
.vision-mission-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 28px;
}
.vm-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  padding: 40px;
  border: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
}
.vm-card::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--gradient-primary);
}
.vm-card h3 { color: var(--text-primary); margin-bottom: 12px; font-size: 1.3rem; }
.vm-card p { color: var(--text-secondary); }

/* ===== 20. Core Values ===== */
.values-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px;
}
.value-card {
  text-align: center; padding: 32px 20px;
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition);
}
.value-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--glow-cyan);
  transform: translateY(-4px);
}
.value-card .value-icon {
  width: 64px; height: 64px; border-radius: 50%;
  background: var(--bg-elevated);
  border: 2px solid var(--accent-cyan);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 16px;
  color: var(--accent-cyan); font-size: 1.5rem;
}
.value-card h4 { font-size: 1rem; }
.value-card p { color: var(--text-muted); }

/* ===== 21. Social Commitment ===== */
.social-commitment {
  background: var(--gradient-primary);
  border-radius: var(--radius-card);
  padding: 56px;
  color: white;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 40px; align-items: center;
}
.social-commitment h2 { color: white; margin-bottom: 16px; }
.social-commitment p { color: rgba(255,255,255,0.85); line-height: 1.8; }
.social-items { display: flex; flex-direction: column; gap: 16px; }
.social-item {
  display: flex; align-items: center; gap: 14px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.12);
  border-radius: 12px;
}
.social-item i { font-size: 1.3rem; color: white; }
.social-item span { font-weight: 500; }

/* ===== 22. Testimonials ===== */
.testimonial-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  padding: 48px;
  border: 1px solid var(--border-subtle);
  max-width: 700px; margin: 0 auto;
  text-align: center;
  position: relative;
}
.testimonial-card::before {
  content: '\201C';
  position: absolute; top: 20px; left: 32px;
  font-size: 5rem; line-height: 1;
  background: var(--gradient-primary);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
}
.testimonial-card .quote {
  font-size: 1.1rem; line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 24px; font-style: italic;
}
.testimonial-card .author { font-weight: 700; color: var(--text-primary); }
.testimonial-card .role { font-size: 0.85rem; color: var(--text-muted); }

/* ===== 23. Client Logos ===== */
.logos-grid {
  display: flex; align-items: center; justify-content: center;
  gap: 48px; flex-wrap: wrap;
}
.logo-item {
  font-size: 1rem; font-weight: 600;
  color: var(--text-muted); letter-spacing: 1px;
  transition: color var(--transition);
  padding: 8px 12px;
}
.logo-item:hover { color: var(--text-secondary); }

/* ===== 24. Contact ===== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
}
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.contact-form .btn { margin-top: 12px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label {
  font-size: 0.9rem; font-weight: 600; color: var(--text-primary);
}
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  font-size: 1rem; font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--bg-elevated);
  color: var(--text-primary);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: var(--focus-ring);
}
.form-group input.error,
.form-group textarea.error {
  border-color: var(--error);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-error {
  font-size: 0.85rem; color: var(--error); margin-top: 4px;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.5; } }
.btn-sending { animation: pulse 1.5s ease-in-out infinite; pointer-events: none; }
.btn-success { background: var(--success) !important; }
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23999' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
}

/* Contact Info Card */
.contact-info-card {
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  padding: 40px; color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}
.contact-info-card h3 {
  color: var(--text-primary);
  margin-bottom: 24px; font-size: 1.4rem;
}
.contact-info-item {
  display: flex; align-items: flex-start; gap: 14px; margin-bottom: 24px;
}
.contact-info-item i { font-size: 1.2rem; color: var(--accent-cyan); margin-top: 3px; }
.contact-info-item a { color: var(--text-secondary); }
.contact-info-item a:hover { color: var(--accent-cyan); }

/* ===== 25. About Page — Prose, Team, VM Card Icon ===== */
.prose { max-width: 860px; margin: 0 auto; }
.prose p {
  font-size: 1.1rem; line-height: 1.9;
  color: var(--text-secondary); margin-bottom: 24px;
}
.team-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 24px;
}
.team-placeholder {
  background: var(--bg-surface); border-radius: var(--radius-card);
  height: 220px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 14px;
  border: 2px dashed var(--border-hover);
}
.team-placeholder-avatar {
  width: 72px; height: 72px; border-radius: 50%; background: var(--bg-elevated);
}
.team-placeholder-name {
  width: 100px; height: 12px; background: var(--bg-elevated);
  border-radius: 6px;
}
.team-placeholder-role {
  width: 70px; height: 10px; background: var(--border-subtle);
  border-radius: 6px;
}
.team-placeholder-label {
  font-size: 0.75rem; color: var(--text-muted); font-style: italic;
}
.team-join {
  background: var(--gradient-primary); border-radius: var(--radius-card);
  height: 220px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 14px;
  padding: 24px; text-align: center;
}
.team-join-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1.5rem;
}
.team-join p { color: rgba(255,255,255,0.9); font-size: 0.9rem; font-weight: 600; }
.team-join a { font-size: 0.8rem; color: white; font-weight: 600; text-decoration: underline; }
.vm-card .card-icon { margin-bottom: 20px; }

/* ===== 25b. Contact Page — Map Placeholder ===== */
.map-placeholder {
  width: 100%; min-height: 320px;
  background: var(--bg-surface);
  border-radius: var(--radius-card);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 12px;
  color: var(--text-muted); font-weight: 600; font-size: 1.1rem;
  border: 2px dashed var(--border-hover);
}
.map-placeholder i { font-size: 2.5rem; color: var(--accent-cyan); }

/* ===== 26. Animations ===== */
.fade-in {
  opacity: 0; transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}
.fade-in.visible { opacity: 1; transform: translateY(0); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 26. Accessibility ===== */
@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
  .hero-orb { animation: none !important; }
  .hero-content h1, .hero-content p, .hero-buttons {
    opacity: 1; transform: none; animation: none;
  }
  .hero-globe { opacity: 1; transform: none; animation: none; }
  html { scroll-behavior: auto; }
  .card:hover, .project-card:hover, .value-card:hover, .tech-item:hover {
    transform: none;
  }
  .btn:hover { transform: none; }
}

a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ===== 27. Responsive Breakpoints ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .card { padding: 24px; }
  .card p, .tech-item-info p { font-size: 0.85rem; }
}

@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.15rem; }

  .card { padding: 24px; }
  .card p { font-size: 0.9rem; }
  .vm-card { padding: 28px; }
  .testimonial-card { padding: 32px; }
  .contact-info-card { padding: 28px; }
  .logos-grid { gap: 24px; }

  .nav-links {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10,10,11,0.95);
    flex-direction: column;
    justify-content: center; align-items: center;
    gap: 0;
    opacity: 0; pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 99;
  }
  .nav-links.open { opacity: 1; pointer-events: all; }
  .nav-links a {
    padding: 16px 24px;
    font-size: 1.2rem; color: var(--text-primary);
  }
  .nav-links a::after { display: none; }
  .nav-cta {
    margin: 16px 24px;
    text-align: center; justify-content: center;
  }
  .hamburger { display: flex; z-index: 101; }

  .hero-split { grid-template-columns: 1fr; text-align: center; }
  .hero-content { text-align: center; margin: 0 auto; }
  .hero-buttons { justify-content: center; }
  .hero-globe { max-width: 380px; margin: 0 auto; }
  .hero h1 { font-size: 2.5rem; }
  .hero p { font-size: 1rem; margin-left: auto; margin-right: auto; }
  .hero-orb { transform: scale(0.5); }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .services-grid, .projects-grid { grid-template-columns: 1fr; }
  .vision-mission-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .social-commitment { grid-template-columns: 1fr; padding: 32px; }
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .page-hero { padding: 120px 0 60px; }
  .tech-tabs { gap: 6px; }
  .tech-tab { padding: 8px 14px; font-size: 0.8rem; }
  .project-card { flex-direction: column; }
  .project-card-accent { width: 100%; height: 4px; }
  .project-card-img { width: 100%; height: 60px; }
}

@media (max-width: 480px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.05rem; }
  .container { padding: 0 16px; }
  .hero-buttons { flex-direction: column; }
  .btn { width: 100%; justify-content: center; padding: 12px 24px; font-size: 0.9rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .filter-tabs { gap: 8px; }
  .filter-tab { padding: 10px 16px; font-size: 0.8rem; }
  .card { padding: 20px; }
  .card-icon { width: 32px; height: 32px; font-size: 0.9rem; }
  .section-header p { font-size: 0.9rem; }
  .section { padding: 40px 0; }
  .social-commitment { padding: 24px; gap: 24px; }
  .social-commitment h2 { font-size: 1.3rem; }
  .testimonial-card { padding: 24px; }
  .testimonial-card .quote { font-size: 0.95rem; }
  .testimonial-card::before { font-size: 3.5rem; top: 10px; left: 20px; }
  .stat-item .stat-number { font-size: 2rem; }
  .page-hero { padding: 100px 0 48px; }
  .page-hero p { font-size: 1rem; }
  .hero-orb { display: none; }
  .hero { background: radial-gradient(circle at 50% 50%, rgba(59,130,246,0.06) 0%, var(--bg-primary) 60%); }
  .hero-globe { max-width: 260px; }
  .logos-grid { gap: 16px; }
  .logo-item { font-size: 0.85rem; padding: 6px 8px; }
  .tech-content.active { grid-template-columns: 1fr; }
  .footer { padding: 40px 0 0; }
  .footer-grid { gap: 24px; }
}

@media (max-width: 320px) {
  h1 { font-size: 1.7rem; }
  h2 { font-size: 1.3rem; }
  .container { padding: 0 12px; }
  .hero-globe { max-width: 220px; }
  .hero p { font-size: 0.9rem; }
  .btn { padding: 10px 20px; font-size: 0.85rem; }
  .nav-logo { font-size: 0.95rem; }
  .nav-logo .logo-icon { width: 32px; height: 32px; font-size: 0.9rem; }
}