:root {
  --bg: #0b1015;
  --bg-alt: #0e1418;
  --surface: #10171a;
  --border: #223039;
  --text: #e7edf0;
  --text-muted: #93a4ac;
  --accent: #33d1e0;
  --accent-ink: #04181c;
  --accent-soft: rgba(51, 209, 224, 0.1);

  --font-display: ui-serif, "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --max-width: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

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

.eyebrow {
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  margin: 0 0 14px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.22;
  text-wrap: balance;
  margin: 0 0 16px;
}

h1 { font-size: clamp(2.1rem, 4.4vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-family: var(--font-body); font-weight: 700; font-size: 1.1rem; margin-bottom: 8px; }

p { color: var(--text-muted); margin: 0 0 16px; max-width: 65ch; }

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 16, 21, 0.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
}

.brand-logo { width: 92px; height: 92px; display: block; object-fit: contain; }
.brand-name {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  transition: color 0.15s ease;
}

.nav a:hover, .nav a:focus-visible { color: var(--accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

/* Hero */
.hero {
  padding: 120px 0 96px;
  background:
    radial-gradient(620px 320px at 12% 0%, var(--accent-soft), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: 720px;
  border-left: 2px solid var(--border);
  padding-left: 28px;
}

.hero-lead {
  font-size: 1.08rem;
}

.hero-prompt {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--text);
  margin: 28px 0 0;
}

.prompt-arrow { color: var(--accent); margin-right: 8px; }

.cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--accent);
  margin-left: 4px;
  vertical-align: -2px;
  animation: blink 1.1s steps(1) infinite;
}

@media (prefers-reduced-motion: reduce) {
  .cursor { animation: none; opacity: 1; }
}

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 13px 26px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

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

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

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

.btn-large { font-size: 1.05rem; padding: 16px 34px; }

/* Sections */
.section { padding: 96px 0; }
.section-alt { background: var(--bg-alt); }

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  margin-top: 32px;
  align-items: start;
}

.about-highlights {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.highlight-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
}

.highlight-card p { margin: 0; font-size: 0.92rem; }

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 32px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 28px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.project-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 14px;
}

.project-card p { font-size: 0.92rem; }

.project-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.project-stack span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 3px 8px;
}

/* Contact */
.contact-inner { text-align: center; max-width: 620px; }
.contact-inner p { margin-left: auto; margin-right: auto; }
.contact-lead { margin-bottom: 32px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.site-footer p {
  margin: 0 auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

/* Responsive */
@media (max-width: 860px) {
  .about-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .hero-inner { border-left: none; padding-left: 0; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 16px 24px;
    gap: 18px;
    display: none;
  }
  .nav.open { display: flex; }
  .nav-toggle { display: flex; }
}