*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
.hidden { display: none; }

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --text: #111827;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --bg: #ffffff;
  --bg-alt: #f9fafb;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.06);
  --shadow-md: 0 4px 24px rgba(0,0,0,.10);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .18s ease;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); transform: translateY(-1px); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); }
.btn-lg { padding: 14px 30px; font-size: 1rem; }
.btn-full { width: 100%; }

/* ── NAV ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .2s;
}
.nav.scrolled { box-shadow: var(--shadow); }
.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
}
.logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -.5px;
  flex-shrink: 0;
}
.logo span { color: var(--primary); }
.nav-links {
  display: flex;
  gap: 28px;
  margin-left: auto;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .95rem;
  font-weight: 500;
  transition: color .15s;
}
.nav-links a:hover { color: var(--primary); }
.nav-cta { margin-left: 8px; }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .2s;
}

/* ── HERO ── */
.hero {
  padding: 96px 0 80px;
  background: linear-gradient(160deg, #f8faff 0%, #ffffff 60%);
  border-bottom: 1px solid var(--border);
}
.hero-inner { text-align: center; }
.hero-badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .8rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.03em;
  margin-bottom: 20px;
}
.highlight { color: var(--primary); }
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 56px; }
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.stat { display: flex; flex-direction: column; align-items: center; }
.stat-num { font-size: 2rem; font-weight: 800; color: var(--text); letter-spacing: -.04em; }
.stat-label { font-size: .8rem; color: var(--text-muted); font-weight: 500; }
.stat-divider { width: 1px; height: 40px; background: var(--border); }

/* ── SECTIONS ── */
.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }
.section-header { text-align: center; margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  color: var(--primary);
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-header h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -.03em;
  margin-bottom: 12px;
}
.section-header p { color: var(--text-muted); font-size: 1.05rem; }

/* ── SERVICES ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: box-shadow .2s, transform .2s;
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.service-icon { font-size: 2rem; margin-bottom: 16px; }
.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; }
.service-card p { color: var(--text-muted); font-size: .95rem; line-height: 1.65; }

/* ── ABOUT ── */
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.about-text h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; letter-spacing: -.03em; margin-bottom: 16px; }
.about-text p { color: var(--text-muted); margin-bottom: 16px; line-height: 1.7; }
.about-list { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.about-list li { color: var(--text); font-size: .95rem; font-weight: 500; }
.about-visual { display: flex; justify-content: center; }
.about-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 380px;
}
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}
.tech-stack span {
  background: var(--primary-light);
  color: var(--primary);
  font-size: .8rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
}
.tech-label { font-size: .85rem; color: var(--text-muted); font-weight: 500; text-align: center; }

/* ── PROCESS ── */
.process-steps {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}
.step {
  flex: 1;
  min-width: 200px;
  max-width: 240px;
  text-align: center;
  padding: 24px 16px;
}
.step-num {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--primary-light);
  letter-spacing: -.05em;
  line-height: 1;
  margin-bottom: 14px;
  -webkit-text-stroke: 2px var(--primary);
}
.step h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 10px; }
.step p { color: var(--text-muted); font-size: .9rem; line-height: 1.65; }
.step-arrow { font-size: 1.4rem; color: var(--border); align-self: center; padding: 0 4px; flex-shrink: 0; }

/* ── CONTACT ── */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 64px;
  align-items: start;
}
.contact-text h2 { font-size: clamp(1.5rem, 3vw, 2rem); font-weight: 800; letter-spacing: -.03em; margin-bottom: 16px; }
.contact-text p { color: var(--text-muted); line-height: 1.7; margin-bottom: 28px; }
.contact-info { display: flex; flex-direction: column; gap: 14px; }
.contact-item { display: flex; align-items: center; gap: 12px; }
.contact-icon { font-size: 1.1rem; }
.contact-item a { color: var(--primary); text-decoration: none; font-weight: 500; }
.contact-item a:hover { text-decoration: underline; }
.contact-item span { color: var(--text-muted); }

/* ── FORM ── */
.contact-form {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: .85rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group select,
.form-group textarea {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: .95rem;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  transition: border-color .15s;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.1); }
.form-group textarea { resize: vertical; }
.form-note { font-size: .85rem; color: var(--text-muted); text-align: center; min-height: 20px; }
.form-note.success { color: #16a34a; }
.form-note.error { color: #dc2626; }

/* ── FOOTER ── */
.footer { background: var(--text); color: #e5e7eb; padding: 48px 0 0; }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 40px;
}
.footer .logo { color: #fff; }
.footer .logo span { color: #93c5fd; }
.footer-brand p { font-size: .9rem; color: #9ca3af; margin-top: 6px; }
.footer-links { display: flex; gap: 24px; }
.footer-links a { color: #9ca3af; text-decoration: none; font-size: .9rem; transition: color .15s; }
.footer-links a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid #374151;
  text-align: center;
  padding: 18px 0;
  font-size: .85rem;
  color: #6b7280;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 16px 24px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-cta { display: none; }
  .hamburger { display: flex; }

  .hero { padding: 64px 0 56px; }
  .hero-stats { gap: 20px; }
  .stat-divider { display: none; }

  .about-inner,
  .contact-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-visual { display: none; }

  .process-steps { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); }

  .form-row { grid-template-columns: 1fr; }

  .footer-inner { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}