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

:root {
  --bg:           #080c10;
  --surface:      #0f1318;
  --surface-2:    #161c24;
  --surface-3:    #1e2630;
  --accent:       #38bdf8;
  --accent-dim:   rgba(56, 189, 248, 0.12);
  --accent-glow:  rgba(56, 189, 248, 0.25);
  --cta:          #f59e0b;
  --cta-hover:    #fbbf24;
  --text:         #e2e8f0;
  --text-muted:   #64748b;
  --text-faint:   #334155;
  --border:       #1e2d3d;
  --border-accent:#1e4a6e;
  --radius:       8px;
  --radius-lg:    14px;
  --max-w:        1120px;
  --nav-h:        64px;
  --transition:   0.2s ease;
}

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

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ============================================================
   Typography
   ============================================================ */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: 1.25rem; font-weight: 600; }

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

/* ============================================================
   Layout
   ============================================================ */
.container { width: 90%; max-width: var(--max-w); margin: 0 auto; }
section { padding: 6rem 0; }

/* ============================================================
   Navigation
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.site-nav.scrolled {
  background: rgba(8, 12, 16, 0.9);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  width: 90%;
  max-width: var(--max-w);
  margin: 0 auto;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
}
.logo-mark { color: var(--accent); font-size: 1.3rem; line-height: 1; }
.logo-text { color: var(--text); }
.logo-accent { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 0.45rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent) !important;
  transition: background var(--transition), color var(--transition) !important;
}
.nav-cta:hover {
  background: var(--accent);
  color: var(--bg) !important;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
}
.btn-primary:hover {
  background: #7dd3fc;
  transform: translateY(-1px);
  box-shadow: 0 8px 24px var(--accent-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-cta {
  background: var(--cta);
  color: #000;
}
.btn-cta:hover {
  background: var(--cta-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(245, 158, 11, 0.3);
}

/* ============================================================
   Hero
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(56,189,248,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  width: 90%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 4rem 0;
}
.hero-eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.hero-eyebrow::before {
  content: '';
  display: block;
  width: 24px; height: 1px;
  background: var(--accent);
}
.hero h1 {
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, #e2e8f0 0%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 48ch;
  margin-bottom: 2.25rem;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-card-stack {
  position: relative;
  width: 340px;
  height: 340px;
}
.h-card {
  position: absolute;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  font-size: 0.85rem;
}
.h-card-1 {
  width: 260px;
  top: 0; left: 0;
  border-top: 2px solid var(--accent);
}
.h-card-2 {
  width: 220px;
  bottom: 20px; right: 0;
  border-top: 2px solid var(--cta);
}
.h-card-3 {
  width: 180px;
  top: 50%; left: 50%;
  transform: translate(-20%, -60%);
  border-top: 2px solid #a78bfa;
  background: var(--surface-3);
}
.h-card-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.h-card-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.h-card-sub { font-size: 0.75rem; color: var(--text-muted); margin-top: 0.35rem; }
.h-card-bar {
  height: 4px;
  background: var(--surface-3);
  border-radius: 2px;
  margin-top: 0.75rem;
  overflow: hidden;
}
.h-card-bar-fill {
  height: 100%;
  border-radius: 2px;
  background: var(--accent);
}

/* ============================================================
   Services
   ============================================================ */
.services { background: var(--surface); }
.section-header {
  text-align: center;
  max-width: 540px;
  margin: 0 auto 3.5rem;
}
.section-header p { color: var(--text-muted); margin-top: 0.75rem; font-size: 1.05rem; }
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: transparent;
  transition: background var(--transition);
}
.service-card:hover { border-color: var(--border-accent); transform: translateY(-3px); }
.service-card:hover::after { background: var(--accent); }
.service-card.featured {
  border-color: var(--border-accent);
  background: linear-gradient(160deg, var(--surface-2), var(--surface-3));
}
.service-card.featured::after { background: var(--accent); }
.service-icon {
  width: 44px; height: 44px;
  background: var(--accent-dim);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--accent);
}
.service-icon svg { width: 22px; height: 22px; }
.service-card h3 { margin-bottom: 0.6rem; }
.service-card > p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.25rem; line-height: 1.7; }
.service-list { display: flex; flex-direction: column; gap: 0.4rem; }
.service-list li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.service-list li::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  flex-shrink: 0;
}

/* ============================================================
   About
   ============================================================ */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 5rem;
  align-items: center;
}
.about-text h2 { margin-bottom: 1.25rem; }
.about-text p { color: var(--text-muted); margin-bottom: 1rem; line-height: 1.8; }
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-top: 2rem;
}
.stat-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}
.stat-label { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.3rem; }
.about-features { display: flex; flex-direction: column; gap: 1.25rem; }
.feature-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  padding: 1.5rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition);
}
.feature-item:hover { border-color: var(--border-accent); }
.feature-icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  background: var(--accent-dim);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}
.feature-icon svg { width: 20px; height: 20px; }
.feature-content h4 { font-size: 0.95rem; font-weight: 600; margin-bottom: 0.25rem; }
.feature-content p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* ============================================================
   Contact
   ============================================================ */
.contact { background: var(--surface); }
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 5rem;
  align-items: start;
}
.contact-info h2 { margin-bottom: 1rem; }
.contact-info > p { color: var(--text-muted); line-height: 1.8; margin-bottom: 2rem; }
.contact-details { display: flex; flex-direction: column; gap: 0.75rem; }
.contact-detail {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.contact-detail svg { color: var(--accent); flex-shrink: 0; }
.contact-form {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; margin-bottom: 1.25rem; }
.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--text);
  width: 100%;
  transition: border-color var(--transition);
  resize: none;
}
.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-dim);
}
.form-group select option { background: var(--surface-2); }
.form-submit { width: 100%; font-size: 1rem; padding: 0.85rem; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 4rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.footer-brand .logo-mark { font-size: 1.3rem; color: var(--accent); }
.footer-brand .logo-text { font-weight: 700; font-size: 1.1rem; }
.footer-brand p { color: var(--text-muted); font-size: 0.85rem; margin-top: 0.75rem; max-width: 28ch; line-height: 1.7; }
.footer-links h4 { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 1rem; }
.footer-links ul { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-links a { font-size: 0.88rem; color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  font-size: 0.8rem;
  color: var(--text-faint);
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-eyebrow { justify-content: center; }
  .hero-actions { justify-content: center; }
  .hero-visual { display: none; }
  .services-grid { grid-template-columns: 1fr; }
  .about-inner { grid-template-columns: 1fr; gap: 3rem; }
  .contact-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 640px) {
  section { padding: 4rem 0; }
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(8, 12, 16, 0.97);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0;
    backdrop-filter: blur(12px);
  }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { display: block; padding: 0.9rem 0; border-bottom: 1px solid var(--border); font-size: 1rem; }
  .nav-links li:last-child a { border-bottom: none; }
  .nav-cta { border: none; border-radius: 0; padding-left: 0; }
  .nav-toggle { display: flex; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}