/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #1a1a25;
  --bg-card-hover: #222233;
  --text-primary: #e8e8f0;
  --text-secondary: #9090a8;
  --text-muted: #606078;
  --accent: #00d4ff;
  --accent-hover: #33ddff;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --border: #2a2a3a;
  --success: #00e676;
  --warning: #ffab00;
  --gradient-1: linear-gradient(135deg, #00d4ff, #0066ff);
  --gradient-2: linear-gradient(135deg, #00d4ff 0%, #7c3aed 100%);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --max-width: 1200px;
  --header-h: 72px;
}

html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ===== HEADER ===== */
header {
  position: fixed; top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(42, 42, 58, 0.5);
  z-index: 1000;
  transition: var(--transition);
}
header.scrolled { background: rgba(10, 10, 15, 0.95); }
.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  width: 36px; height: 36px;
  background: var(--gradient-1);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
}
.logo span { color: var(--accent); }

nav { display: flex; align-items: center; gap: 32px; }
nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
nav a::after {
  content: '';
  position: absolute; bottom: -4px; left: 0; right: 0;
  height: 2px; background: var(--accent);
  transform: scaleX(0); transition: var(--transition);
}
nav a:hover, nav a.active { color: var(--text-primary); }
nav a:hover::after, nav a.active::after { transform: scaleX(1); }

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px;
  cursor: pointer;
  transition: var(--transition);
}
.lang-toggle:hover { border-color: var(--accent); }
.lang-btn {
  padding: 4px 10px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.lang-btn.active {
  background: var(--accent);
  color: #000;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 2px;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(124, 58, 237, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(0, 102, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(42, 42, 58, 0.3) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 42, 58, 0.3) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  pointer-events: none;
}
.hero-content {
  max-width: 800px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.5px;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.hero h1 .highlight {
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  letter-spacing: 0.3px;
}
.btn-primary {
  background: var(--gradient-1);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.35);
}
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}
.btn-secondary:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent);
  color: #000;
  transform: translateY(-2px);
}

/* ===== SECTION COMMON ===== */
.section {
  padding: 100px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.15);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 16px;
}
.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}
.section-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-visual {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-visual svg {
  width: 80%;
  height: 80%;
  opacity: 0.8;
}
.about-text h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 20px;
}
.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 32px;
}
.stat-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  text-align: center;
}
.stat-num {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient-1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-1);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.service-card:hover {
  border-color: rgba(0, 212, 255, 0.2);
  transform: translateY(-4px);
  background: var(--bg-card-hover);
}
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.service-card h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}
.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}
.service-list {
  list-style: none;
  margin-top: 16px;
}
.service-list li {
  color: var(--text-secondary);
  font-size: 0.85rem;
  padding: 6px 0;
  padding-left: 20px;
  position: relative;
}
.service-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ===== WHY US ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.why-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.why-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.2);
}
.why-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.why-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}
.why-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== CONTACT ===== */
.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.contact-info h3 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 16px;
}
.contact-info > p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.contact-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.contact-icon {
  width: 44px; height: 44px;
  min-width: 44px;
  border-radius: 10px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}
.contact-item h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.contact-item p { font-size: 0.9rem; color: var(--text-secondary); }

.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--text-secondary);
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group select { appearance: none; cursor: pointer; }

/* ===== TEAM ===== */
.team-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.team-card {
  text-align: center;
  padding: 32px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}
.team-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.2);
}
.team-avatar {
  width: 80px; height: 80px;
  border-radius: 50%;
  background: var(--gradient-2);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #fff;
  font-weight: 600;
}
.team-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}
.team-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ===== LEGAL PAGES ===== */
.legal-page {
  padding-top: calc(var(--header-h) + 48px);
  padding-bottom: 80px;
}
.legal-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 24px;
}
.legal-container h1 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.legal-container .last-updated {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 40px;
}
.legal-container h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin: 36px 0 16px;
  color: var(--accent);
}
.legal-container h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 24px 0 12px;
}
.legal-container p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}
.legal-container ul, .legal-container ol {
  color: var(--text-secondary);
  margin: 12px 0 20px;
  padding-left: 24px;
  line-height: 1.8;
}
.legal-container li { margin-bottom: 8px; }
.legal-container strong { color: var(--text-primary); }

/* ===== FOOTER ===== */
footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 60px 24px 30px;
}
.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: 16px;
  max-width: 300px;
}
.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.footer-col a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.88rem;
  padding: 6px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.footer-bottom a { color: var(--text-secondary); text-decoration: none; }
.footer-bottom a:hover { color: var(--accent); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  nav { display: none; }
  nav.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    align-items: stretch;
  }
  nav.open a { font-size: 1rem; padding: 8px 0; }
  .mobile-menu-btn { display: flex; }

  .about-grid,
  .contact-wrap { grid-template-columns: 1fr; }
  .about-grid { gap: 32px; }

  .services-grid { grid-template-columns: 1fr; }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .about-stats { grid-template-columns: repeat(3, 1fr); }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .hero h1 { font-size: 2rem; }
  .contact-form { padding: 24px; }
}

@media (max-width: 480px) {
  .section { padding: 60px 16px; }
  .hero { padding: 100px 16px 60px; }
  .about-stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .stat-item { padding: 14px; }
  .stat-num { font-size: 1.5rem; }
  .team-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
}