/* ============================
   TOKENS
   ============================ */
:root {
  --bg:          #0F1923;
  --bg-card:     #162230;
  --bg-card-alt: #1C2E40;
  --text:        #E8E6E0;
  --text-muted:  #8A9BAD;
  --text-subtle: #556678;
  --accent:      #D4870A;
  --accent-dim:  #8A5507;
  --amber-glow:  rgba(212,135,10,0.12);
  --border:      rgba(232,230,224,0.08);
  --border-card: rgba(232,230,224,0.11);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius: 6px;
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

/* ============================
   LAYOUT HELPERS
   ============================ */
.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 100px 0;
  border-top: 1px solid var(--border);
}

#hero { border-top: none; }

/* ============================
   TYPOGRAPHY HELPERS
   ============================ */
h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-top: 8px;
  margin-bottom: 32px;
  color: var(--text);
}

h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: var(--text);
  margin-bottom: 12px;
}

p {
  color: var(--text-muted);
  margin-bottom: 16px;
  max-width: 64ch;
}

p:last-child { margin-bottom: 0; }

.section-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-intro {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 40px;
  max-width: 60ch;
}

/* ============================
   BUTTONS
   ============================ */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #0F1923;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 12px 28px;
  border-radius: var(--radius);
  transition: background var(--transition), transform var(--transition);
}

.btn-primary:hover {
  background: #e8940c;
  transform: translateY(-1px);
}

.btn-ghost {
  display: inline-block;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 0.9rem;
  padding: 12px 28px;
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  transition: color var(--transition), border-color var(--transition), transform var(--transition);
}

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-subtle);
  transform: translateY(-1px);
}

/* ============================
   NAV
   ============================ */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(15,25,35,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s;
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.nav-cta {
  background: var(--amber-glow);
  border: 1px solid var(--accent-dim);
  color: var(--accent) !important;
  padding: 6px 16px;
  border-radius: var(--radius);
  transition: background var(--transition) !important;
}

.nav-cta:hover { background: rgba(212,135,10,0.22) !important; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: background var(--transition);
}

.nav-mobile {
  display: none;
  flex-direction: column;
  padding: 16px 24px 20px;
  gap: 16px;
  border-top: 1px solid var(--border);
}

.nav-mobile a {
  font-size: 0.95rem;
  color: var(--text-muted);
  padding: 4px 0;
}

.nav-mobile.open { display: flex; }

/* ============================
   HERO
   ============================ */
#hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-subtle);
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 28px;
}

.hero-terminal {
  display: inline-flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-left: 3px solid var(--accent);
  padding: 10px 18px;
  border-radius: var(--radius);
  margin-bottom: 28px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text);
  min-height: 44px;
  min-width: 280px;
}

.terminal-prompt { color: var(--accent); }

.terminal-cursor {
  display: inline-block;
  width: 2px;
  height: 1em;
  background: var(--accent);
  margin-left: 1px;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-sub {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 56ch;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Subtle grid background */
.hero-grid-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 60% at 60% 50%, rgba(0,0,0,0.35) 0%, transparent 80%);
  pointer-events: none;
}

/* ============================
   ABOUT
   ============================ */
#about { background: var(--bg); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 64px;
  align-items: start;
}

.about-left p { font-size: 1.02rem; }

.cert-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cert-card {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 14px 16px;
  transition: border-color var(--transition);
}

.cert-card:hover { border-color: var(--accent-dim); }

.cert-card.cert-inprogress { opacity: 0.55; }

.cert-icon {
  font-size: 1.1rem;
  color: var(--accent);
  flex-shrink: 0;
  width: 20px;
  text-align: center;
}

.cert-name {
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
}

.cert-date {
  font-size: 0.78rem;
  color: var(--text-subtle);
  margin-top: 2px;
}

.cert-edu {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-top: 4px;
}

.cert-school {
  font-size: 0.78rem;
  color: var(--accent);
  margin-top: 4px;
}

/* ============================
   SKILLS
   ============================ */
#skills { background: var(--bg-card); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

.skill-group {
  background: var(--bg);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 22px 20px;
  transition: border-color var(--transition);
}

.skill-group:hover { border-color: var(--accent-dim); }

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--bg-card-alt);
  border: 1px solid var(--border-card);
  padding: 4px 10px;
  border-radius: 100px;
  line-height: 1.4;
}

.tag.tag-sm { font-size: 0.68rem; padding: 3px 9px; }

/* ============================
   EXPERIENCE
   ============================ */
#experience { background: var(--bg); }

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--border-card);
  margin-left: 4px;
}

.timeline-item {
  padding: 0 0 48px 40px;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 4px var(--accent-dim);
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 4px;
}

.timeline-company {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--accent);
}

.timeline-period {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-subtle);
}

.timeline-role {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 2px;
}

.timeline-team {
  font-size: 0.82rem;
  color: var(--text-subtle);
  margin-bottom: 16px;
}

.timeline-bullets {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.timeline-bullets li {
  font-size: 0.92rem;
  color: var(--text-muted);
  padding-left: 14px;
  position: relative;
  line-height: 1.6;
}

.timeline-bullets li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 4px;
  height: 1px;
  background: var(--text-subtle);
}

.timeline-awards {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.award {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  background: var(--amber-glow);
  border: 1px solid var(--accent-dim);
  padding: 4px 12px;
  border-radius: 100px;
}

/* ============================
   HOMELAB / PROJECTS
   ============================ */
#projects { background: var(--bg-card); }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--bg);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition);
}

.project-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-2px);
}

.project-icon {
  font-size: 1.2rem;
  color: var(--accent);
  margin-bottom: 14px;
  opacity: 0.7;
}

.project-card h3 { margin-bottom: 8px; }

.project-card p {
  font-size: 0.88rem;
  line-height: 1.6;
  margin-bottom: 16px;
  max-width: none;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ============================
   CONTACT
   ============================ */
#contact { background: var(--bg); }

.contact-inner {
  max-width: 600px;
}

.contact-inner p {
  font-size: 1.05rem;
  margin-bottom: 36px;
  max-width: none;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius);
  transition: border-color var(--transition), background var(--transition);
}

.contact-link:hover {
  border-color: var(--accent-dim);
  background: var(--bg-card-alt);
}

.contact-link-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  min-width: 60px;
}

.contact-link-value {
  font-size: 0.92rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.contact-link:hover .contact-link-value { color: var(--text); }

/* ============================
   FOOTER
   ============================ */
footer {
  border-top: 1px solid var(--border);
  padding: 24px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-subtle);
  flex-wrap: wrap;
  gap: 8px;
}

/* ============================
   RESPONSIVE
   ============================ */
@media (max-width: 860px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
}

@media (max-width: 600px) {
  section { padding: 72px 0; }

  .hero-name { letter-spacing: -0.03em; }

  .timeline { margin-left: 0; }

  .contact-link {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

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

/* ============================
   REDUCED MOTION
   ============================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}