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

:root {
  --bg: #080808;
  --surface: #0e0e0e;
  --border: #1a1a1a;
  --accent: #00e5ff;
  --accent-dim: rgba(0, 229, 255, 0.06);
  --text: #d8d8d8;
  --muted: #444;
  --muted2: #2a2a2a;
  --nav-bg: rgba(8,8,8,0.92);
  --grid-color: rgba(0,229,255,0.025);
  --scanline: rgba(0,0,0,0.07);
}

[data-theme="light"] {
  --bg: #f2f2ed;
  --surface: #e8e8e3;
  --border: #d0d0c8;
  --accent: #006e8a;
  --accent-dim: rgba(0, 110, 138, 0.06);
  --text: #181818;
  --muted: #777;
  --muted2: #aaa;
  --nav-bg: rgba(242,242,237,0.94);
  --grid-color: rgba(0,100,140,0.045);
  --scanline: rgba(0,0,0,0.03);
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  cursor: crosshair;
  transition: background 0.2s, color 0.2s;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    var(--scanline) 2px,
    var(--scanline) 4px
  );
  pointer-events: none;
  z-index: 999;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ── Nav ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 2.5rem;
  background: var(--nav-bg);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: background 0.2s, border-color 0.2s;
}

.logo {
  font-size: 0.8rem;
  color: var(--accent);
  letter-spacing: 0.08em;
  text-decoration: none;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.1rem;
  flex-wrap: wrap;
}

.nav-links a {
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border: 1px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-status {
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  white-space: nowrap;
}

/* ── Theme toggle ── */
.theme-toggle {
  font-family: 'Space Mono', monospace;
  font-size: 0.55rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  background: none;
  border: 1px solid var(--border);
  padding: 0.25rem 0.6rem;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.theme-toggle:hover {
  color: var(--accent);
  border-color: rgba(0,229,255,0.3);
}
[data-theme="light"] .theme-toggle:hover {
  border-color: rgba(0,100,140,0.3);
}

/* ── Blink & pulse ── */
.blink { animation: blink 1.1s step-end infinite; color: var(--accent); }
@keyframes blink { 50% { opacity: 0; } }

.status-dot {
  display: inline-block;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 0.4rem;
  vertical-align: middle;
  animation: pulse 2.5s ease-in-out infinite;
}
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.2; } }

/* ── Hero ── */
.hero {
  position: relative;
  z-index: 1;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 10rem 2.5rem 5rem;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}

.prompt-line {
  font-size: 0.7rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  margin-bottom: 2.5rem;
}
.prompt-line span { color: var(--accent); }
.prompt-line a { color: inherit; text-decoration: none; }
.prompt-line a:hover { text-decoration: underline; }

h1 {
  font-size: clamp(2rem, 5.5vw, 4rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  color: var(--text);
}
h1 .dim { color: var(--muted); font-weight: 400; }
h1 .hi  { color: var(--accent); }

.hero-desc {
  font-size: 0.8rem;
  color: var(--muted);
  line-height: 1.9;
  max-width: 520px;
  margin-bottom: 3.5rem;
  letter-spacing: 0.02em;
}

/* ── Capability rows ── */
.capabilities {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 580px;
}

.cap-row {
  display: flex;
  align-items: baseline;
  gap: 1.5rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
  transition: background 0.15s;
}
.cap-row:first-child { border-top: 1px solid var(--border); }

.cap-index { font-size: 0.6rem; color: var(--muted); min-width: 1.5rem; }
.cap-icon  { display: flex; align-items: center; color: var(--accent); opacity: 0.75; flex-shrink: 0; }
.cap-name  { font-size: 0.75rem; color: var(--text); letter-spacing: 0.05em; flex: 1; }
.cap-tag   { font-size: 0.6rem; color: var(--muted); letter-spacing: 0.08em; font-style: italic; }

.hero-icon { color: var(--accent); opacity: 0.55; margin-bottom: 1.75rem; }

/* ── Section divider ── */
.divider { position: relative; z-index: 1; border: none; border-top: 1px solid var(--border); }

/* ── Inner page content ── */
.content {
  position: relative;
  z-index: 1;
  padding: 4rem 2.5rem 5rem;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
}

.section-header {
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.14em;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.section-header::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

/* ── Stack tags ── */
.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 3rem;
}

.stack-tag {
  font-size: 0.6rem;
  color: var(--muted);
  letter-spacing: 0.1em;
  border: 1px solid var(--border);
  padding: 0.3rem 0.75rem;
  background: var(--surface);
  transition: color 0.15s, border-color 0.15s;
}
.stack-tag:hover { color: var(--accent); border-color: rgba(0,229,255,0.3); }
[data-theme="light"] .stack-tag:hover { border-color: rgba(0,100,140,0.3); }

/* ── Footer ── */
footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 1.5rem 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

footer .copy {
  font-size: 0.6rem;
  color: var(--muted2);
  letter-spacing: 0.08em;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.1rem;
}

.footer-links a {
  font-size: 0.55rem;
  color: var(--muted2);
  letter-spacing: 0.08em;
  text-decoration: none;
  padding: 0.2rem 0.5rem;
  transition: color 0.15s;
}
.footer-links a:hover { color: var(--accent); }

.footer-blink {
  font-size: 0.6rem;
  color: var(--muted2);
  letter-spacing: 0.08em;
}

@media (max-width: 700px) {
  nav { padding: 0.9rem 1.25rem; gap: 0.5rem; }
  .nav-links { display: none; }
  .hero { padding: 7rem 1.25rem 3.5rem; }
  .content { padding: 3rem 1.25rem 4rem; }
  footer { padding: 1rem 1.25rem; }
}