/* ----------------------------------------------------------------
   Keith MacKay — personal site
   Dark + monospace, mobile-first
---------------------------------------------------------------- */

@font-face {
  font-family: "Hack";
  src: url("/fonts/Hack-Regular.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Hack";
  src: url("/fonts/Hack-Italic.ttf") format("truetype");
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Hack";
  src: url("/fonts/Hack-Bold.ttf") format("truetype");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Hack";
  src: url("/fonts/Hack-BoldItalic.ttf") format("truetype");
  font-weight: 700;
  font-style: italic;
  font-display: swap;
}

:root {
  --bg: #0a0f14;
  --bg-alt: #0e1520;
  --bg-elev: #131c28;
  --border: #1f2a38;
  --border-soft: #182230;
  --text: #d7e0ea;
  --text-dim: #8a97a8;
  --text-mute: #5a6778;
  --accent: #7cf0c0;
  --accent-strong: #4ee3a0;
  --accent-warm: #f3c969;
  --danger: #ff6b6b;

  --mono: "Hack", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --radius: 10px;
  --radius-sm: 6px;
  --max-width: 1080px;
  --gutter: clamp(1.25rem, 4vw, 2.25rem);

  --shadow-soft: 0 1px 0 rgba(255, 255, 255, 0.03) inset, 0 10px 30px -20px rgba(0, 0, 0, 0.6);
  --transition: 180ms ease;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(124, 240, 192, 0.06), transparent 60%),
    radial-gradient(900px 500px at -10% 20%, rgba(243, 201, 105, 0.04), transparent 60%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-strong); }
button { font: inherit; cursor: pointer; }

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--bg);
  padding: 0.5rem 0.75rem;
  z-index: 100;
}
.skip-link:focus { left: 0.5rem; top: 0.5rem; }

/* -------- Header -------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(10, 15, 20, 0.72);
  border-bottom: 1px solid var(--border-soft);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand:hover { color: var(--accent); }
.brand-bracket { color: var(--accent); }

.nav-list {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav-list a {
  color: var(--text-dim);
  font-size: 13px;
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
.nav-list a:hover { color: var(--accent); border-bottom-color: var(--accent); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  width: 40px;
  height: 40px;
  padding: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(5.5px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-5.5px) rotate(-45deg);
}

@media (max-width: 720px) {
  .nav-toggle { display: inline-flex; }
  .nav-list {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border-soft);
    padding: 1rem var(--gutter) 1.25rem;
    gap: 0.75rem;
    transform: translateY(-110%);
    transition: transform 200ms ease;
    visibility: hidden;
  }
  .nav-list.open {
    transform: translateY(0);
    visibility: visible;
  }
  .nav-list a {
    font-size: 15px;
    display: block;
    padding: 0.5rem 0;
    border-bottom-color: var(--border-soft);
  }
}

/* -------- Hero -------- */
.hero {
  position: relative;
  padding: clamp(4rem, 10vw, 7rem) 0 clamp(3rem, 8vw, 5rem);
  overflow: hidden;
}
.hero-inner {
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  color: var(--accent);
  font-size: 13px;
  margin: 0 0 1rem;
  letter-spacing: 0.04em;
}
.hero-title {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(2.25rem, 7vw, 4.5rem);
  line-height: 1.05;
  margin: 0 0 1.5rem;
  letter-spacing: -0.03em;
}
.hero-title .line { display: block; }
.hero-title .muted { color: var(--text-mute); }
.hero-tagline {
  max-width: 60ch;
  color: var(--text-dim);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  margin: 0 0 1.75rem;
  line-height: 1.7;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 2rem;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.meta-item .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-strong);
  box-shadow: 0 0 12px var(--accent-strong);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.25rem;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-strong);
  color: var(--bg);
  transform: translateY(-1px);
}
.btn-ghost {
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(124, 240, 192, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 240, 192, 0.05) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 70% 30%, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, black 0%, transparent 75%);
  pointer-events: none;
}

/* -------- Sections -------- */
.section {
  padding: clamp(3.5rem, 8vw, 6rem) 0;
  border-top: 1px solid var(--border-soft);
}
.section-alt {
  background: linear-gradient(180deg, rgba(255,255,255,0.012), transparent 40%), var(--bg-alt);
}
.section-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 2.25rem;
}
.section-num {
  font-size: 13px;
  color: var(--accent);
}
.section-title {
  font-family: var(--mono);
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin: 0;
  letter-spacing: -0.02em;
  font-weight: 600;
}
.section-title::after {
  content: "";
  display: inline-block;
  width: clamp(80px, 30%, 240px);
  height: 1px;
  background: linear-gradient(90deg, var(--border), transparent);
  vertical-align: middle;
  margin-left: 1rem;
}
.section-lede {
  color: var(--text-dim);
  margin: -1rem 0 2rem;
  max-width: 60ch;
}
.subhead {
  font-family: var(--mono);
  color: var(--text-dim);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 2.5rem 0 1rem;
  font-weight: 500;
}

/* -------- About -------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}
@media (max-width: 720px) {
  .about-grid { grid-template-columns: 1fr; }
}
.about-copy p {
  margin: 0 0 1rem;
  color: var(--text-dim);
}
.about-copy p:first-child { color: var(--text); }
.about-facts {
  margin: 1.5rem 0 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: var(--bg-elev);
}
.about-facts div { margin: 0; }
.about-facts dt {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-mute);
  margin-bottom: 0.25rem;
}
.about-facts dd {
  margin: 0;
  font-size: 14px;
  color: var(--text);
}

.about-photo {
  margin: 0;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
}
.about-photo img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}
.about-photo figcaption {
  padding: 0.75rem 1rem;
  color: var(--text-dim);
  font-size: 12px;
  border-top: 1px solid var(--border-soft);
}

/* -------- Timeline -------- */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--accent), var(--border) 30%, var(--border));
}
.timeline li {
  position: relative;
  padding: 0 0 2rem 64px;
}
.timeline li:last-child { padding-bottom: 0; }
.timeline-marker {
  position: absolute;
  left: 0;
  top: 4px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.timeline-marker img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}
.timeline-card {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 1.25rem 1.25rem;
  box-shadow: var(--shadow-soft);
  transition: border-color var(--transition), transform var(--transition);
}
.timeline-card:hover {
  border-color: var(--border);
  transform: translateY(-2px);
}
.timeline-card h3 {
  margin: 0 0 0.15rem;
  font-size: 1rem;
  font-weight: 600;
}
.timeline-card .role {
  color: var(--accent);
  font-size: 13px;
  margin-bottom: 0.5rem;
}
.timeline-card .years {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-mute);
  margin-bottom: 0.75rem;
}
.timeline-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.7;
}

/* -------- Skills -------- */
.skills-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
}
.skill {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: var(--bg-elev);
  transition: border-color var(--transition), transform var(--transition);
}
.skill:hover { border-color: var(--accent); transform: translateY(-2px); }
.skill-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  object-fit: contain;
}
.skill-name {
  font-size: 14px;
  color: var(--text);
}

.tag-cloud {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag-cloud li {
  font-size: 12px;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--border-soft);
  border-radius: 100px;
  color: var(--text-dim);
  background: var(--bg-elev);
  transition: border-color var(--transition), color var(--transition);
}
.tag-cloud li:hover { border-color: var(--accent); color: var(--accent); }

/* -------- Education -------- */
.edu-card {
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 1.5rem;
}
.edu-card h3 {
  margin: 0 0 0.25rem;
  font-size: 1.1rem;
}
.edu-meta {
  color: var(--accent);
  font-size: 13px;
  margin: 0 0 1rem;
}
.edu-card p {
  color: var(--text-dim);
  margin: 0 0 1rem;
}
.chip-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.chip-list li {
  font-size: 12px;
  padding: 0.35rem 0.65rem;
  background: var(--bg);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  color: var(--text-dim);
}

/* -------- Projects -------- */
.project-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1rem;
}
.project-card {
  position: relative;
  display: block;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  color: var(--text);
  transition: transform var(--transition), border-color var(--transition);
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}
.project-card .thumb {
  aspect-ratio: 16 / 9;
  background: var(--bg);
  overflow: hidden;
}
.project-card .thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}
.project-card:hover .thumb img { transform: scale(1.04); }
.project-card .body { padding: 1rem 1.1rem 1.15rem; }
.project-card h3 {
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
}
.project-card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 13px;
}

/* -------- Connect -------- */
.connect-inner { text-align: center; }
.connect-inner .section-head { justify-content: center; }
.connect-lede {
  max-width: 50ch;
  margin: 0 auto 1.5rem;
  color: var(--text-dim);
}
.email-link {
  display: inline-block;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500;
  border-bottom: 1px dashed var(--accent);
  padding-bottom: 0.25rem;
  margin-bottom: 2rem;
}
.email-link:hover {
  border-bottom-style: solid;
}
.social-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}
.social-list a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  background: var(--bg-elev);
  transition: border-color var(--transition), color var(--transition), transform var(--transition);
}
.social-list a:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.social-list svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* -------- Footer -------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 1.25rem 0 2rem;
  font-size: 12px;
  color: var(--text-mute);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.footer-meta {
  display: inline-flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
/* -------- Reveal animations -------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .meta-item .dot { animation: none; }
}