/* ============================================================
   luke.humberdross.com
   Subtle cyber-themed single page. Dark, mono accents,
   restrained motion.
   ============================================================ */

:root {
  --bg:        #0a0e14;
  --bg-soft:   #0d1320;
  --panel:     #11192690;
  --line:      #1c2735;
  --line-soft: #161f2c;
  --fg:        #e6edf3;
  --fg-muted:  #9aa7b8;
  --fg-dim:    #5f6e80;
  --accent:    #4ee1a0;
  --accent-dim:#2c8c66;
  --accent-glow: rgba(78, 225, 160, 0.16);
  --cyan:      #58c8e8;

  --mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  --maxw: 880px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* Soft radial vignette + subtle grid behind everything */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background:
    radial-gradient(1100px 700px at 50% -10%, rgba(78,225,160,0.06), transparent 60%),
    radial-gradient(900px 600px at 100% 100%, rgba(88,200,232,0.05), transparent 55%),
    var(--bg);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(circle at 50% 35%, #000 0%, transparent 78%);
          mask-image: radial-gradient(circle at 50% 35%, #000 0%, transparent 78%);
  opacity: 0.5;
}

#bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  opacity: 0.55;
  pointer-events: none;
}

/* Faint CRT scanlines */
.scanlines {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.012) 0px,
    rgba(255, 255, 255, 0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

/* Cursor-following glow */
.pointer-glow {
  position: fixed;
  top: 0; left: 0;
  width: 460px;
  height: 460px;
  margin: -230px 0 0 -230px;
  z-index: -1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow), transparent 65%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.6s var(--ease);
  will-change: transform;
}

/* ---------- Layout shell ---------- */

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: #03110b;
  padding: 0.5rem 1rem;
  z-index: 50;
  font-family: var(--mono);
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; }

.site-header,
main,
.site-footer {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 2;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.6rem;
  padding-bottom: 1.6rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--fg);
}
.brand-mark {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  border-radius: 7px;
  padding: 0.2rem 0.45rem;
  background: rgba(78,225,160,0.06);
  letter-spacing: 0.04em;
}
.brand-host {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  gap: 1.4rem;
}
.site-nav a {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--fg-muted);
  text-decoration: none;
  position: relative;
  transition: color 0.2s var(--ease);
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.28s var(--ease);
}
.site-nav a:hover,
.site-nav a:focus-visible { color: var(--fg); }
.site-nav a:hover::after,
.site-nav a:focus-visible::after { transform: scaleX(1); }

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

.hero { padding: clamp(3rem, 12vh, 7rem) 0 4rem; }

.hero-prompt {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--fg-dim);
  margin-bottom: 1.4rem;
}
.prompt-glyph { color: var(--accent); }
.prompt-cmd::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 1.05em;
  margin-left: 2px;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}

.hero-name {
  font-size: clamp(2.6rem, 9vw, 5rem);
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(180deg, #ffffff 0%, #b9c6d6 100%);
  -webkit-background-clip: text;
          background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1.1rem;
}

.hero-role {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem 0.9rem;
  font-family: var(--mono);
  margin-bottom: 1.3rem;
}
.role-label {
  color: var(--accent);
  font-size: 1.05rem;
  font-weight: 500;
}
.role-typed {
  color: var(--fg-muted);
  font-size: 0.95rem;
}
.role-typed::before { content: "// "; color: var(--fg-dim); }
.caret {
  display: inline-block;
  width: 7px;
  height: 1em;
  background: var(--accent);
  margin-left: 1px;
  vertical-align: text-bottom;
  animation: blink 1.1s steps(1) infinite;
}

.hero-meta {
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--fg-muted);
  margin-bottom: 1.8rem;
}
.meta-pin { color: var(--cyan); margin-right: 0.35rem; }
.meta-sep { color: var(--fg-dim); margin: 0 0.5rem; }
.meta-coord { color: var(--fg-dim); }

.hero-bio {
  max-width: 56ch;
  color: var(--fg-muted);
  font-size: 1.02rem;
  margin-bottom: 2.6rem;
}

/* ---------- Link cards ---------- */

.hero-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.9rem;
}

.link-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.95rem 1.1rem;
  text-decoration: none;
  color: var(--fg);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  backdrop-filter: blur(6px);
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), background 0.25s var(--ease);
}
.link-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, var(--accent-glow), transparent);
  transform: translateX(-110%);
  transition: transform 0.6s var(--ease);
}
.link-card:hover,
.link-card:focus-visible {
  border-color: var(--accent-dim);
  transform: translateY(-3px);
  background: #131c2b;
}
.link-card:hover::before,
.link-card:focus-visible::before { transform: translateX(110%); }

.link-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  flex: none;
  border-radius: 9px;
  background: rgba(78,225,160,0.08);
  border: 1px solid var(--line);
  color: var(--accent);
}
.link-text { display: flex; flex-direction: column; line-height: 1.25; }
.link-title { font-weight: 600; font-size: 0.98rem; }
.link-handle {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--fg-dim);
}
.link-arrow {
  margin-left: auto;
  font-family: var(--mono);
  color: var(--fg-dim);
  transition: transform 0.25s var(--ease), color 0.25s var(--ease);
}
.link-card:hover .link-arrow,
.link-card:focus-visible .link-arrow {
  transform: translateX(4px);
  color: var(--accent);
}

/* ---------- Selected work ---------- */

.work { padding: 1rem 0 4rem; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.6rem;
  padding-bottom: 0.9rem;
  border-bottom: 1px solid var(--line);
}
.section-head h2 {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--fg);
  letter-spacing: 0.04em;
  text-transform: lowercase;
}
.section-index { color: var(--accent); margin-right: 0.5rem; }
.section-link {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease);
}
.section-link:hover,
.section-link:focus-visible { color: var(--accent); }

.work-grid {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.9rem;
}

.work-card a {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: 0.7rem;
  padding: 1.2rem 1.25rem;
  text-decoration: none;
  color: var(--fg);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  backdrop-filter: blur(6px);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease), background 0.25s var(--ease);
}
.work-card a:hover,
.work-card a:focus-visible {
  border-color: var(--accent-dim);
  transform: translateY(-3px);
  background: #131c2b;
}
.work-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}
.work-name {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--fg);
}
.work-card a:hover .work-name,
.work-card a:focus-visible .work-name { color: var(--accent); }
.work-lang {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--fg-dim);
  white-space: nowrap;
}
.lang-dot {
  width: 9px; height: 9px;
  border-radius: 50%;
  display: inline-block;
}
.lang-ps  { background: #5391fe; }
.lang-kql { background: #b072ff; }
.lang-py  { background: #f4d35e; }

.work-desc {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.55;
  flex: 1;
}
.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.work-tags span {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-dim);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 0.1rem 0.45rem;
}

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

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.8rem;
  padding-bottom: 2.4rem;
  margin-top: 1rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--fg-dim);
}
.footer-status { display: inline-flex; align-items: center; gap: 0.5rem; }
.status-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}

/* ---------- Reveal-on-scroll ---------- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Keyframes ---------- */

@keyframes blink { 0%, 50% { opacity: 1; } 50.01%, 100% { opacity: 0; } }
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.85); }
}

/* ---------- Responsive ---------- */

@media (max-width: 560px) {
  .brand-host { display: none; }
  .site-header { padding-top: 1.2rem; padding-bottom: 1.2rem; }
  .site-nav { gap: 1rem; }
  .hero { padding-top: 2.5rem; }
  .site-footer { flex-direction: column; align-items: flex-start; gap: 0.6rem; }
}

/* ---------- Reduced motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  #bg { display: none; }
}