:root {
  --bg: #0a0a0a;
  --ink: #f2f0ea;
  --muted: #8a8a86;
  --accent: #ff7a33;
  --rule: #1e1e1c;
  --font-display: ui-sans-serif, "Helvetica Neue", Arial, system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "Menlo", "Consolas", monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-display);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.signal-field,
.signal-rail,
.signal-subline,
.project-meta {
  display: none;
}

.matrix-rain {
  position: fixed;
  inset: 0;
  z-index: 15;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

html[data-matrix-active="true"] .matrix-rain {
  opacity: 0.88;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #0a0a0a;
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  z-index: 100;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* ---------- Hero ---------- */

.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.25rem;
  gap: 1.25rem;
}

.wordmark {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(3.25rem, 16vw, 15rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  white-space: nowrap;
}

.cursor {
  display: inline-block;
  appearance: none;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  line-height: inherit;
  letter-spacing: inherit;
  vertical-align: baseline;
  cursor: pointer;
  animation: blink 1.1s steps(1) infinite;
}

.cursor:hover {
  filter: drop-shadow(0 0 0.08em rgba(255, 122, 51, 0.7));
}

.cursor:focus-visible {
  outline-width: 0.025em;
  outline-offset: 0.04em;
}

html[data-matrix-active="true"] .cursor {
  position: relative;
  z-index: 21;
  animation: none;
  opacity: 1;
  filter: drop-shadow(0 0 0.12em rgba(255, 122, 51, 0.9));
}

@keyframes blink {
  0%, 45% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.tagline {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.6vw, 1.05rem);
  color: var(--muted);
  letter-spacing: 0.02em;
}

.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: lowercase;
  opacity: 0.7;
}

.hero {
  position: relative;
}

/* ---------- Projects ---------- */

.projects {
  border-top: 1px solid var(--rule);
}

.project-row {
  position: relative;
  overflow: hidden;
  display: block;
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  padding: clamp(2rem, 6vw, 4rem) clamp(1.25rem, 6vw, 4rem);
  transition: background-color 0.2s ease;
}

.project-row:hover,
.project-row:focus-visible {
  background-color: #121210;
}

.project-inner {
  max-width: 68rem;
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.project-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 5vw, 3.25rem);
  letter-spacing: -0.02em;
  margin: 0;
}

.project-row:hover .project-name,
.project-row:focus-visible .project-name {
  color: var(--accent);
}

.project-desc {
  font-family: var(--font-mono);
  font-size: clamp(0.85rem, 1.4vw, 1rem);
  color: var(--muted);
  max-width: 32rem;
  margin: 0;
}

.project-arrow {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 1.25rem;
  flex-shrink: 0;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: clamp(2rem, 6vw, 3rem) clamp(1.25rem, 6vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

.site-footer a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ---------- Optional signal atmosphere ----------
   Remove data-atmosphere="signal" from <html> to restore the base design. */

html[data-atmosphere="signal"] body::before {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  content: "";
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 3px,
    rgba(242, 240, 234, 0.018) 4px
  );
  mix-blend-mode: screen;
}

html[data-atmosphere="signal"] .signal-field {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
  pointer-events: none;
  opacity: 0.38;
  background-image:
    linear-gradient(rgba(255, 122, 51, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 122, 51, 0.055) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(circle at 50% 42%, black 0, transparent 70%);
  mask-image: radial-gradient(circle at 50% 42%, black 0, transparent 70%);
}

html[data-atmosphere="signal"] .hero,
html[data-atmosphere="signal"] .projects,
html[data-atmosphere="signal"] .site-footer {
  position: relative;
  z-index: 1;
}

html[data-atmosphere="signal"] .hero {
  overflow: hidden;
}

html[data-atmosphere="signal"] .hero::after {
  position: absolute;
  top: -10%;
  left: 0;
  width: 100%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent 8%, var(--accent) 50%, transparent 92%);
  box-shadow: 0 0 18px rgba(255, 122, 51, 0.55);
  opacity: 0.42;
  animation: signal-scan 9s linear infinite;
}

html[data-atmosphere="signal"] .signal-rail {
  position: absolute;
  top: 2rem;
  left: clamp(1.25rem, 4vw, 4rem);
  right: clamp(1.25rem, 4vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
}

html[data-atmosphere="signal"] .signal-status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
}

html[data-atmosphere="signal"] .signal-status i {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px rgba(255, 122, 51, 0.7);
}

html[data-atmosphere="signal"] .wordmark {
  text-shadow: 0 0 42px rgba(255, 122, 51, 0.075);
}

html[data-atmosphere="signal"] .signal-subline {
  display: block;
  max-width: 36rem;
  margin: 0.15rem 0 0;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: clamp(0.72rem, 1.15vw, 0.9rem);
  line-height: 1.65;
  opacity: 0.66;
}

html[data-atmosphere="signal"] .project-row::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  content: "";
  background: var(--accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform 0.25s ease;
}

html[data-atmosphere="signal"] .project-row:hover::before,
html[data-atmosphere="signal"] .project-row:focus-visible::before {
  transform: scaleY(1);
}

html[data-atmosphere="signal"] .project-inner {
  transition: transform 0.25s ease;
}

html[data-atmosphere="signal"] .project-row:hover .project-inner,
html[data-atmosphere="signal"] .project-row:focus-visible .project-inner {
  transform: translateX(0.45rem);
}

html[data-atmosphere="signal"] .project-meta {
  display: block;
  margin-bottom: 0.65rem;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.11em;
}

@keyframes signal-scan {
  from { transform: translateY(0); }
  to { transform: translateY(120svh); }
}

@media (max-width: 480px) {
  html[data-atmosphere="signal"] .signal-rail {
    top: 1.25rem;
    font-size: 0.58rem;
  }

  html[data-atmosphere="signal"] .signal-field {
    background-size: 32px 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
    opacity: 1;
  }
  .project-row {
    transition: none;
  }
  html[data-atmosphere="signal"] .hero::after {
    animation: none;
    top: 62%;
  }
  html[data-atmosphere="signal"] .project-inner,
  html[data-atmosphere="signal"] .project-row::before {
    transition: none;
  }
  .matrix-rain {
    transition: none;
  }
}