/* Nebula Consulting — design system */

:root {
  --bg: #0a0e1a;
  --bg-alt: #0f1428;
  --surface: #141a33;
  --surface-2: #1b2244;
  --border: #262f52;
  --text: #eef1fb;
  --text-dim: #a6adc9;
  --accent: #8b5cf6;
  --accent-2: #22d3ee;
  --accent-grad: linear-gradient(135deg, #6d28d9 0%, #8b5cf6 45%, #22d3ee 100%);
  --radius: 14px;
  --max-width: 1140px;
  --shadow: 0 20px 60px -20px rgba(90, 60, 220, 0.35);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 14, 26, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text);
}

.brand:hover { text-decoration: none; }

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  object-fit: cover;
  box-shadow: 0 0 22px rgba(139, 92, 246, 0.45);
  flex-shrink: 0;
}

.main-nav ul {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  color: var(--text-dim);
  font-weight: 500;
  font-size: 0.95rem;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--text);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  width: 42px;
  height: 42px;
  font-size: 1.1rem;
  cursor: pointer;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 24px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn:hover { text-decoration: none; }

.btn-primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 10px 30px -10px rgba(139, 92, 246, 0.7);
}

.btn-primary:hover { filter: brightness(1.08); }

.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-ghost:hover { border-color: var(--accent-2); }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  overflow: hidden;
  padding: 100px 0 90px;
  text-align: center;
  background:
    radial-gradient(60% 50% at 20% 0%, rgba(139, 92, 246, 0.35), transparent 60%),
    radial-gradient(50% 40% at 85% 10%, rgba(34, 211, 238, 0.25), transparent 60%),
    var(--bg);
}

.eyebrow {
  display: inline-block;
  color: var(--accent-2);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.15;
  margin: 0 0 20px;
  font-weight: 800;
}

.hero .lead {
  max-width: 640px;
  margin: 0 auto 36px;
  color: var(--text-dim);
  font-size: 1.15rem;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ---------- Sections ---------- */

section { padding: 80px 0; }

.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 52px;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.3rem);
  margin: 0 0 14px;
}

.section-head p { color: var(--text-dim); margin: 0; }

.section-alt { background: var(--bg-alt); }

/* ---------- Cards / grid ---------- */

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--accent-grad);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.card h3 { margin: 0 0 10px; font-size: 1.2rem; }
.card p { margin: 0; color: var(--text-dim); }

.card ul {
  margin: 16px 0 0;
  padding-left: 20px;
  color: var(--text-dim);
}

.card li { margin-bottom: 8px; }

/* ---------- Certifications ---------- */

.cert-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

.cert-pill {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
}

/* ---------- Stats ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat .num {
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat .label { color: var(--text-dim); font-size: 0.9rem; margin-top: 6px; }

/* ---------- CTA banner ---------- */

.cta-banner {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 56px;
  text-align: center;
}

.cta-banner h2 { margin: 0 0 12px; font-size: 1.8rem; }
.cta-banner p { color: var(--text-dim); margin: 0 0 28px; }

/* ---------- Contact ---------- */

.contact-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-info .card { margin-bottom: 20px; }

.contact-info a { color: var(--text); font-weight: 600; }

form.contact-form {
  display: grid;
  gap: 18px;
}

.contact-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 16px;
  color: var(--text);
  font-family: inherit;
  font-size: 0.95rem;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent-2);
}

.contact-form textarea { resize: vertical; min-height: 140px; }

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 48px 0;
  color: var(--text-dim);
  font-size: 0.9rem;
}

.footer-brand {
  margin-bottom: 32px;
}

.footer-brand img {
  height: 92px;
  width: auto;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  padding: 0;
  margin: 0;
}

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

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .grid-3 { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .contact-wrap { grid-template-columns: 1fr; }
  .cta-banner { padding: 36px 24px; }

  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }

  .main-nav {
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    display: none;
  }

  .main-nav.open { display: block; }

  .main-nav ul {
    flex-direction: column;
    gap: 0;
    padding: 12px 24px 20px;
  }

  .main-nav li { border-bottom: 1px solid var(--border); }
  .main-nav a { display: block; padding: 14px 0; }

  .header-cta .btn-primary { display: none; }
}