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

:root {
  --navy:      #0f2744;
  --blue:      #1e5fa8;
  --white:     #ffffff;
  --off-white: #f7f6f2;
  --dark-bg:   #0a1e36;
  --ink:       #1a1a1a;
  --muted:     #5a6a7a;
  --border:    2px solid #0f2744;
  --radius:    4px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Lato', sans-serif;
  font-size: 16px;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Typography ───────────────────────────────────────────────────────────── */
h1, h2, h3 { font-family: 'Montserrat', sans-serif; line-height: 1.15; }

h1 {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  color: var(--navy);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--navy);
}

h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--navy);
}

p { color: var(--muted); }

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

.eyebrow {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.75rem;
  display: block;
}

.eyebrow-light { color: rgba(255,255,255,0.55); }

/* ── Layout helpers ───────────────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section { padding: 6rem 0; }
.section-alt { background: var(--off-white); }
.section-dark { background: var(--dark-bg); color: var(--white); }
.section-header { margin-bottom: 3.5rem; }

/* ── Buttons ──────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Montserrat', sans-serif;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  transition: all 0.25s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.btn-primary:hover { background: var(--blue); border-color: var(--blue); }

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-ghost:hover { background: var(--navy); color: var(--white); }

.btn-nav {
  background: var(--navy);
  color: var(--white);
  padding: 0.6rem 1.4rem;
  font-size: 0.8rem;
  border-radius: var(--radius);
}
.btn-nav:hover { background: var(--blue); }

.btn-outline-light {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}
.btn-outline-light:hover { border-color: var(--white); }

/* ── Navigation ───────────────────────────────────────────────────────────── */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}

#nav.scrolled {
  border-bottom-color: #e8e8e8;
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--navy);
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-links a {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.2s;
}

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

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  padding: 10rem 0 6rem;
  background: var(--white);
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5rem;
  align-items: center;
}

.hero-left h1 { margin-bottom: 1.5rem; }

.hero-tagline {
  font-family: 'Montserrat', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--navy);
  border-left: 4px solid var(--blue);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
  line-height: 1.4;
}

.hero-body {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--muted);
  max-width: 520px;
  margin-bottom: 2.5rem;
}

.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }

/* ── Stat grid ────────────────────────────────────────────────────────────── */
.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: var(--border);
}

.stat-block {
  padding: 2rem 1.75rem;
  border: var(--border);
  margin: -1px 0 0 -1px;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: background 0.2s;
}

.stat-block:hover { background: var(--off-white); }

.stat-number {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--navy);
  line-height: 1;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ── Expertise grid ───────────────────────────────────────────────────────── */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: var(--border);
}

.expertise-card {
  padding: 2rem;
  border: var(--border);
  margin: -1px 0 0 -1px;
  transition: background 0.2s;
}

.expertise-card:hover { background: var(--off-white); }
.expertise-card h3 { margin-bottom: 0.75rem; }
.expertise-card p { font-size: 0.9rem; line-height: 1.7; }

/* ── Timeline ─────────────────────────────────────────────────────────────── */
.timeline {
  display: flex;
  flex-direction: column;
  border: var(--border);
}

.timeline-item {
  display: grid;
  grid-template-columns: 220px 1fr;
  border-bottom: var(--border);
  transition: background 0.2s;
}

.timeline-item:last-child { border-bottom: none; }
.timeline-item:hover { background: var(--white); }

.timeline-meta {
  padding: 2rem;
  border-right: var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: rgba(247,246,242,0.5);
}

.timeline-date {
  font-family: 'Montserrat', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--navy);
}

.timeline-type {
  font-size: 0.78rem;
  color: var(--blue);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.timeline-content { padding: 2rem; }
.timeline-content h3 { margin-bottom: 0.6rem; }
.timeline-content p { font-size: 0.92rem; line-height: 1.75; }

/* ── Certifications ───────────────────────────────────────────────────────── */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: var(--border);
}

.cert-item {
  padding: 2rem 1.5rem;
  border: var(--border);
  margin: -1px 0 0 -1px;
  transition: background 0.2s;
}

.cert-item:hover { background: var(--off-white); }
.cert-item h3 { margin-bottom: 0.5rem; font-size: 0.95rem; }
.cert-item p { font-size: 0.82rem; color: var(--blue); font-weight: 600; }

/* ── Contact ──────────────────────────────────────────────────────────────── */
.contact-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: center;
}

.contact-heading { color: var(--white); margin-bottom: 0.75rem; }
.contact-sub { color: rgba(255,255,255,0.55); font-size: 1rem; }

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex-shrink: 0;
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer {
  background: var(--navy);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer p { font-size: 0.82rem; color: rgba(255,255,255,0.4); }

/* ── Animations ───────────────────────────────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.9s ease forwards;
}

.fade-in-delay { animation-delay: 0.25s; }

@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .expertise-grid { grid-template-columns: repeat(2, 1fr); }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero { padding: 8rem 0 4rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .nav-links { display: none; }
  .expertise-grid { grid-template-columns: 1fr; }
  .timeline-item { grid-template-columns: 1fr; }
  .timeline-meta { border-right: none; border-bottom: var(--border); padding: 1.5rem; }
  .timeline-content { padding: 1.5rem; }
  .certs-grid { grid-template-columns: 1fr 1fr; }
  .contact-inner { grid-template-columns: 1fr; gap: 2.5rem; }
}

@media (max-width: 480px) {
  .certs-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
}