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

:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --surface: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --accent: #2f81f7;
  --accent-light: #388bfd;
  --accent-glow: rgba(47,129,247,0.15);
  --green: #3fb950;
  --gold: #d29922;
  --mil: #58a6ff;
  --font: 'Inter', sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.2s ease;
  --max-w: 1100px;
}

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

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

a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-light); }

/* ===== NAV ===== */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(13,17,23,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--mono);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  padding: 0.2rem 0.6rem;
}
nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}
nav ul a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: color var(--transition);
}
nav ul a:hover { color: var(--text); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border: none;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: var(--accent-light);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(47,129,247,0.3);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: var(--accent-glow);
  color: var(--accent-light);
}
.btn-lg { padding: 0.85rem 2rem; font-size: 1rem; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 8rem 2rem 4rem;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(47,129,247,0.12), transparent);
  border-bottom: 1px solid var(--border);
}
.hero-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}
.hero-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(47,129,247,0.3);
  border-radius: 100px;
  padding: 0.3rem 1rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #e6edf3 0%, #8b949e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero h2 {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  font-weight: 400;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  letter-spacing: 0.01em;
}
.hero-sub {
  max-width: 640px;
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}
.hero-stats {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
}
.stat { display: flex; flex-direction: column; gap: 0.2rem; }
.stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  font-family: var(--mono);
  line-height: 1;
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ===== SECTIONS ===== */
.section { padding: 6rem 2rem; }
.section-alt { background: var(--bg-alt); }

.container {
  max-width: var(--max-w);
  margin: 0 auto;
}
.section-label {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.75rem;
}
.section-title {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 3rem;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  font-size: 1.02rem;
  line-height: 1.75;
}
.stack-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--mono);
  padding: 0.3rem 0.7rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}
.tag:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}
.military-badge {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
}
.mil-icon {
  font-size: 1.5rem;
  color: var(--gold);
}
.military-badge strong { color: var(--text); font-size: 0.95rem; }
.military-badge span { font-size: 0.85rem; color: var(--text-muted); }
.mil-dates { font-size: 0.8rem; color: var(--text-muted); font-family: var(--mono); }

/* ===== TIMELINE ===== */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5rem;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent), var(--border) 80%, transparent);
}
.timeline-item {
  position: relative;
  padding-bottom: 3.5rem;
  padding-left: 2rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker {
  position: absolute;
  left: -2.4rem;
  top: 0.4rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--border);
  transition: all var(--transition);
}
.timeline-item.current .timeline-marker {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 12px rgba(47,129,247,0.5);
}
.timeline-item .mil .timeline-marker,
.timeline-marker.mil {
  background: var(--gold);
  border-color: var(--gold);
}
.timeline-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.4rem;
  flex-wrap: wrap;
}
.tl-company {
  font-size: 0.8rem;
  font-weight: 600;
  font-family: var(--mono);
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(47,129,247,0.25);
  padding: 0.15rem 0.6rem;
  border-radius: 4px;
}
.tl-dates {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--mono);
}
.tl-title {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.25rem;
}
.tl-team {
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  font-style: italic;
}
.timeline-content ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.timeline-content li {
  font-size: 0.92rem;
  color: var(--text-muted);
  padding-left: 1.2rem;
  position: relative;
  line-height: 1.6;
}
.timeline-content li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
  top: 0.15rem;
}

/* ===== CERTS ===== */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: all var(--transition);
}
.cert-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(47,129,247,0.1);
}
.cert-card.highlight {
  border-color: var(--gold);
  background: linear-gradient(135deg, var(--surface), rgba(210,153,34,0.05));
}
.cert-card.highlight:hover {
  border-color: var(--gold);
  box-shadow: 0 4px 20px rgba(210,153,34,0.15);
}
.cert-icon { font-size: 1.5rem; margin-bottom: 0.75rem; }
.cert-name {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.3rem;
}
.cert-body { font-size: 0.82rem; color: var(--text-muted); line-height: 1.4; }
.cert-badge-link {
  display: inline-block;
  margin-top: 0.75rem;
  font-size: 0.78rem;
  color: var(--gold);
  font-family: var(--mono);
}
.cert-badge-link:hover { color: #e3b341; }

/* ===== EDUCATION ===== */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}
.edu-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.7;
}
.edu-item strong { color: var(--text); }
.edu-dates { font-family: var(--mono); font-size: 0.8rem; color: var(--accent); }

/* ===== CONTACT ===== */
.contact-inner { text-align: center; max-width: 600px; margin: 0 auto; }
.contact-sub {
  color: var(--text-muted);
  margin-bottom: 2rem;
  font-size: 1rem;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
}
footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-family: var(--mono);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .edu-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.5rem; }
  nav ul { gap: 1rem; }
  .stat-num { font-size: 1.5rem; }
  .timeline { padding-left: 1.5rem; }
  .timeline-item { padding-left: 1.5rem; }
  .timeline-marker { left: -1.9rem; }
}
@media (max-width: 480px) {
  nav ul { display: none; }
  .hero { padding: 6rem 1.25rem 3rem; }
  .section { padding: 4rem 1.25rem; }
}