/* ========================================
   SANIN CODES - AI-Powered Software Engineering
   ======================================== */

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-tertiary: #1a1a24;
  --bg-card: #14141e;
  --bg-card-hover: #1a1a28;

  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;

  --accent-1: #6366f1;
  --accent-2: #8b5cf6;
  --accent-3: #06b6d4;
  --gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2), var(--accent-3));
  --gradient-text: linear-gradient(135deg, #818cf8, #a78bfa, #22d3ee);

  --border: #1e1e2e;
  --border-hover: #2e2e42;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.15);
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

img {
  max-width: 100%;
}

/* ========================================
   NAVIGATION
   ======================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all 0.3s ease;
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-bracket {
  color: var(--accent-1);
  font-family: var(--font-mono);
  font-weight: 400;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

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

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient);
  transition: width 0.3s ease;
  border-radius: 1px;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-cta {
  background: var(--gradient);
  color: white !important;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  transition: opacity 0.2s ease, transform 0.2s ease !important;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   HERO
   ======================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
}

.glow-1 {
  width: 600px;
  height: 600px;
  background: var(--accent-1);
  top: -200px;
  right: -100px;
  opacity: 0.15;
  animation: float 8s ease-in-out infinite;
}

.glow-2 {
  width: 400px;
  height: 400px;
  background: var(--accent-2);
  bottom: -100px;
  left: -100px;
  opacity: 0.12;
  animation: float 10s ease-in-out infinite reverse;
}

.glow-3 {
  width: 300px;
  height: 300px;
  background: var(--accent-3);
  top: calc(50% - 150px);
  left: calc(50% - 150px);
  opacity: 0.08;
  animation: float 12s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  33% { transform: translate(30px, -30px); }
  66% { transform: translate(-20px, 20px); }
}

.hero-content {
  position: relative;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: #818cf8;
  margin-bottom: 32px;
  animation: fadeInDown 0.8s ease-out;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: #818cf8;
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

.gradient-text {
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-subtitle strong {
  color: var(--text-primary);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 64px;
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.2s ease;
  cursor: pointer;
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(99, 102, 241, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-1);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-suffix {
  font-size: 2rem;
  font-weight: 700;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow {
  width: 24px;
  height: 24px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  opacity: 0.5;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========================================
   SECTIONS COMMON
   ======================================== */

section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-1);
  margin-bottom: 16px;
  font-family: var(--font-mono);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ========================================
   SERVICES
   ======================================== */

.services {
  background: var(--bg-secondary);
}

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

.service-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: all 0.3s ease;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.service-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.service-card:hover::before {
  opacity: 1;
}

.service-card.featured {
  border-color: rgba(99, 102, 241, 0.3);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(139, 92, 246, 0.05));
}

.featured-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  background: var(--gradient);
  color: white;
  border-radius: 100px;
}

.service-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 20px;
  color: var(--accent-1);
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.service-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 20px;
  line-height: 1.7;
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-features li {
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding-left: 20px;
  position: relative;
}

.service-features li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-3);
  font-weight: 600;
}

/* ========================================
   AI ADVANTAGE
   ======================================== */

.ai-advantage {
  background: var(--bg-primary);
  padding: 100px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.advantage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.advantage-content p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 40px;
}

.advantage-items {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.advantage-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.advantage-number {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  min-width: 64px;
  font-family: var(--font-mono);
}

.advantage-item strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1rem;
}

.advantage-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.6;
}

.code-window {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot.red { background: #ff5f57; }
.code-dot.yellow { background: #febc2e; }
.code-dot.green { background: #28c840; }

.code-title {
  margin-left: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.code-body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
  color: var(--text-secondary);
}

.code-keyword { color: #c678dd; }
.code-module { color: #e5c07b; }
.code-class { color: #61afef; }
.code-func { color: #98c379; }
.code-string { color: #98c379; }
.code-comment { color: #5c6370; }

/* ========================================
   ABOUT
   ======================================== */

.about {
  background: var(--bg-secondary);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-content p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-content p strong {
  color: var(--text-primary);
}

.about-credentials {
  margin-top: 32px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.credential {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.credential-icon {
  font-size: 1.5rem;
  min-width: 40px;
  text-align: center;
}

.credential strong {
  display: block;
  font-size: 0.95rem;
}

.credential span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.highlight-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all 0.3s ease;
}

.highlight-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.highlight-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.highlight-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.highlight-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========================================
   EXPERIENCE
   ======================================== */

.experience {
  background: var(--bg-primary);
}

.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-1), var(--accent-2), var(--accent-3), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-marker {
  position: absolute;
  left: -46px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-1);
  border: 3px solid var(--bg-primary);
  box-shadow: 0 0 0 2px var(--accent-1);
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: all 0.3s ease;
}

.timeline-content:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

.timeline-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.timeline-date {
  font-size: 0.8rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.timeline-badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: 100px;
}

.ai-badge {
  background: rgba(99, 102, 241, 0.15);
  color: #818cf8;
}

.lead-badge {
  background: rgba(139, 92, 246, 0.15);
  color: #a78bfa;
}

.arch-badge {
  background: rgba(6, 182, 212, 0.15);
  color: #22d3ee;
}

.consult-badge {
  background: rgba(234, 179, 8, 0.15);
  color: #fbbf24;
}

.dev-badge {
  background: rgba(34, 197, 94, 0.15);
  color: #4ade80;
}

.timeline-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-content h4 {
  font-size: 0.9rem;
  color: var(--accent-3);
  font-weight: 500;
  margin-bottom: 12px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========================================
   TECHNOLOGIES
   ======================================== */

.tech {
  background: var(--bg-secondary);
}

.tech-categories {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.tech-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.tech-category h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  padding: 6px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.tech-tag:hover {
  border-color: var(--accent-1);
  color: var(--text-primary);
  background: rgba(99, 102, 241, 0.1);
}

.tech-tag.primary {
  border-color: rgba(99, 102, 241, 0.3);
  color: #818cf8;
  background: rgba(99, 102, 241, 0.08);
}

.tech-tag.primary:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: var(--accent-1);
}

/* ========================================
   CONTACT
   ======================================== */

.contact {
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.contact-info p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
  line-height: 1.8;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.contact-method:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.contact-method-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-sm);
  color: var(--accent-1);
  flex-shrink: 0;
}

.contact-method-icon svg {
  width: 20px;
  height: 20px;
}

.contact-method strong {
  display: block;
  font-size: 0.9rem;
}

.contact-method span {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color 0.2s ease;
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b6b80' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
}

.form-group select option {
  background: var(--bg-secondary);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

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

.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ========================================
   ANIMATIONS
   ======================================== */

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }

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

  .nav-links a::after {
    display: none;
  }

  .hero {
    padding: 100px 24px 60px;
  }

  .hero-stats {
    gap: 24px;
  }

  .stat-number {
    font-size: 2rem;
  }

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

  .advantage-grid,
  .about-grid,
  .contact-grid,
  .tech-categories {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-highlights {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: clamp(1.5rem, 5vw, 2.2rem);
  }

  .footer-content {
    flex-direction: column;
    gap: 24px;
    text-align: center;
  }

  .timeline {
    padding-left: 24px;
  }

  .timeline-marker {
    left: -30px;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }
}