:root {
  --bg:        #0f1115;
  --bg-card:   #181b20;
  --border:    #2a2d34;
  --fg:        #e8e8ea;
  --muted:     #8a909a;
  --accent:    #c0182a;
  --accent-dim:#7a0f1b;
  --nav-h:     56px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.7 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100dvh;
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(15,17,21,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1.5rem, 5vw, 4rem);
  z-index: 100;
}

.nav-logo img {
  height: 32px;
  width: auto;
  display: block;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--fg);
}

/* ── Page wrapper ── */
.page {
  padding-top: var(--nav-h);
  min-height: 100dvh;
  display: none;
}

.page.active {
  display: block;
}

/* ── Hero ── */
.hero {
  min-height: calc(100dvh - var(--nav-h));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 4rem clamp(1.5rem, 5vw, 4rem);
  gap: 1.5rem;
}

.hero-logo {
  width: clamp(200px, 40vw, 340px);
  height: auto;
}

.hero-tagline {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--muted);
  max-width: 480px;
  line-height: 1.6;
}

.hero-tagline strong {
  color: var(--fg);
}

.stealth-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.9rem;
  border-radius: 2px;
}

.stealth-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.3; }
}

.hero-contact {
  color: var(--muted);
  font-size: 0.9rem;
}

.hero-contact a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s, color 0.2s;
}

.hero-contact a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── About page ── */
.about-wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 5rem clamp(1.5rem, 5vw, 4rem) 6rem;
}

.about-wrap h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  font-weight: 700;
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

.about-title {
  color: var(--accent);
  font-size: 0.9rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.about-section {
  margin-bottom: 2.5rem;
}

.about-section h2 {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.about-section p {
  color: var(--fg);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.about-section p:last-child { margin-bottom: 0; }

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.82rem;
  padding: 0.25rem 0.65rem;
  border-radius: 2px;
  letter-spacing: 0.02em;
}

.links-row {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.links-row a {
  color: var(--fg);
  text-decoration: none;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}

.links-row a:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
  font-size: 0.8rem;
}