/* =====================================================================
   Egemen Ayhan — Personal site
   Design system + layout. Pure CSS, no build step.
   ===================================================================== */

/* ---------- Tokens ---------- *
   Aesthetic: "measured dev console" — amber accent, warm near-black,
   hairline grid, monospace metadata, corner ticks.                     */
:root {
  /* Palette (dark, default) */
  --bg:          #0a0a0b;
  --bg-elev:     #111113;
  --bg-elev-2:   #17171a;
  --border:      #262529;
  --grid:        #1a1a1d;   /* hairline graph-paper lines */
  --text:        #e8e8ea;
  --text-muted:  #9a9aa2;
  --text-faint:  #64646c;
  --accent:      #ffb000;   /* text-safe amber */
  --accent-bright: #ffb000; /* fills (bars, mark, dots) */
  --accent-soft: rgba(255, 176, 0, 0.12);
  --accent-ring: rgba(255, 176, 0, 0.40);

  /* Type */
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font-sans);
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo,
    Consolas, monospace;

  /* Layout */
  --container: 1080px;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --radius: 6px;
  --radius-sm: 4px;

  --transition: 160ms cubic-bezier(0.4, 0, 0.2, 1);
}

:root[data-theme="light"] {
  /* "light IDE" */
  --bg:          #f4f4f1;
  --bg-elev:     #ffffff;
  --bg-elev-2:   #ecece7;
  --border:      #d9d9d1;
  --grid:        #e6e6df;
  --text:        #1a1a1c;
  --text-muted:  #55555c;
  --text-faint:  #8a8a86;
  --accent:      #9a5b00;   /* text-safe amber on light */
  --accent-bright: #d98a00;
  --accent-soft: rgba(217, 138, 0, 0.12);
  --accent-ring: rgba(217, 138, 0, 0.35);
}

/* ---------- Reset-ish ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

/* the [hidden] attribute must win over author display rules
   (.proto-tile { display:flex }, .btn { display:inline-flex } …) */
[hidden] { display: none !important; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg);
  /* faint graph-paper grid */
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 44px 44px;
  background-position: -1px -1px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
@media (prefers-reduced-motion: no-preference) {
  body { background-attachment: fixed; }
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  font-weight: 600;
  margin: 0;
  letter-spacing: -0.02em;
}

p { margin: 0 0 0.85rem; }

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition);
}

img { max-width: 100%; display: block; }

ul { list-style: none; margin: 0; padding: 0; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 0;
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(2.75rem, 6vw, 4.25rem);
  border-top: 1px solid var(--border);
}
/* corner tick where the divider meets the content column */
.section::before {
  content: "+";
  position: absolute;
  top: -0.72em;
  left: calc(var(--gutter) - 0.35em);
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--accent);
}

.section-head {
  margin-bottom: clamp(1.25rem, 3vw, 1.85rem);
}

.section-head h2 {
  font-size: clamp(1.6rem, 4vw, 2.25rem);
}

/* ---------- Skip link ---------- */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 200;
  background: var(--accent-bright);
  color: #0a0a0b;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  transition: top var(--transition);
}
.skip-link:focus { top: 1rem; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.is-scrolled {
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 600;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--accent-bright);
  color: #0a0a0b;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: -0.04em;
}
.brand-name { font-size: 0.95rem; letter-spacing: -0.01em; }

.nav { margin-left: auto; }
.nav ul {
  display: flex;
  gap: 1.4rem;
}
.nav a {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.02em;
  color: var(--text-muted);
  position: relative;
  padding-block: 0.3rem;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right var(--transition);
}
.nav a:hover,
.nav a.is-active { color: var(--text); }
.nav a:hover::after,
.nav a.is-active::after { right: 0; }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.lang-toggle,
.theme-toggle {
  display: grid;
  place-items: center;
  height: 34px;
  min-width: 34px;
  padding-inline: 0.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 500;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition),
    background var(--transition);
}
.lang-toggle:hover,
.theme-toggle:hover {
  color: var(--text);
  border-color: var(--accent);
}

.theme-toggle .icon-moon { display: none; }
:root[data-theme="light"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="light"] .theme-toggle .icon-moon { display: block; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 0 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elev);
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  transition: transform var(--transition), opacity var(--transition);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  --btn-pad-y: 0.62rem;
  --btn-pad-x: 1.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: var(--btn-pad-y) var(--btn-pad-x);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.01em;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition),
    border-color var(--transition), color var(--transition);
}
.btn::before { content: "["; opacity: 0.55; }
.btn::after { content: "]"; opacity: 0.55; }
.btn:active { transform: translateY(1px); }
.btn-lg { --btn-pad-y: 0.8rem; --btn-pad-x: 1.4rem; font-size: 0.92rem; }

.btn-primary {
  background: var(--accent-bright);
  color: #0a0a0b;
}
.btn-primary:hover {
  background: color-mix(in srgb, var(--accent-bright) 82%, #fff);
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: var(--bg-elev);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding-block: clamp(3.25rem, 10vw, 6rem) clamp(2.75rem, 6vw, 4.25rem);
  overflow: hidden;
}
/* Amber glow bleeding from the top-left + a soft scanline sheen. */
.hero::before {
  content: "";
  position: absolute;
  inset: -50% 55% auto -25%;
  height: 640px;
  pointer-events: none;
  background: radial-gradient(closest-side, var(--accent-soft), transparent 72%);
  filter: blur(30px);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    180deg,
    transparent 0 3px,
    rgba(0, 0, 0, 0.04) 3px 4px
  );
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 80%);
  mask-image: linear-gradient(180deg, #000, transparent 80%);
}

.hero-inner { position: relative; z-index: 1; }

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  color: var(--accent);
  margin-bottom: 0.9rem;
}
.hero-eyebrow::before { content: "// "; color: var(--text-faint); }

.hero-title {
  font-size: clamp(2.4rem, 8vw, 4.4rem);
  font-weight: 700;
  margin-bottom: 1rem;
}
.hero-title .accent { color: var(--accent); }

.hero-lead {
  max-width: 46ch;
  color: var(--text-muted);
  font-size: clamp(1rem, 2.4vw, 1.12rem);
  margin-bottom: 1.1rem;
}

/* mono status line: > available · unity · gameplay */
.hero-meta {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex-wrap: wrap;
}
.hero-meta::before { content: ">"; color: var(--accent); }
.hero-meta .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-bright);
  box-shadow: 0 0 0 0 var(--accent-ring);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 var(--accent-ring); }
  70%, 100% { box-shadow: 0 0 0 7px transparent; }
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.6rem;
}

.hero-social {
  display: flex;
  gap: 1.4rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.hero-social a { color: var(--text-muted); }
.hero-social a:hover { color: var(--text); }
.hero-social a::after {
  content: " ↗";
  color: var(--accent);
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  align-items: start;
}
.about-body p {
  color: var(--text-muted);
  font-size: 1rem;
}
.about-body p:last-child { margin-bottom: 0; }

.about-facts {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  font-family: var(--font-mono);
}
.about-facts::before {
  content: "// properties";
  display: block;
  padding: 0.6rem 1.25rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.72rem;
  color: var(--text-faint);
}
.about-facts dl { margin: 0; display: grid; gap: 0; }
.about-facts dl > div {
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--grid);
}
.about-facts dl > div:last-child { border-bottom: 0; }
.about-facts dt {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 0.25rem;
}
.about-facts dd { margin: 0; font-size: 0.86rem; color: var(--text); }

/* Section intro line under a heading */
.section-intro {
  color: var(--text-muted);
  font-size: 1.02rem;
  max-width: 54ch;
  margin: -0.6rem 0 1.6rem;
}

/* De-emphasised section (Experience / Education). Tighter, muted heading. */
.section-quiet .section-head h2 { font-size: clamp(1.35rem, 3vw, 1.7rem); }

/* ---------- Work (featured projects) ---------- */
.work-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.work-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elev);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition), background var(--transition);
}
/* bounding-box corner ticks */
.work-card::before,
.work-card::after {
  content: "";
  position: absolute;
  width: 9px;
  height: 9px;
  z-index: 2;
  pointer-events: none;
  border: 0 solid var(--text-faint);
  transition: border-color var(--transition);
}
.work-card::before { top: 7px; left: 7px; border-top-width: 1px; border-left-width: 1px; }
.work-card::after { bottom: 7px; right: 7px; border-bottom-width: 1px; border-right-width: 1px; }
.work-card:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--bg-elev) 82%, var(--accent-soft));
}
.work-card:hover::before,
.work-card:hover::after { border-color: var(--accent); }
.work-thumb {
  aspect-ratio: 16 / 9;
  position: relative;
  display: grid;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(120% 120% at 0% 0%, var(--accent-soft), transparent 55%),
    linear-gradient(135deg, var(--bg-elev-2), var(--bg-elev));
  border-bottom: 1px solid var(--border);
}
.work-thumb[data-placeholder]::after {
  content: attr(data-placeholder);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  padding: 0 1.5rem;
  text-align: center;
}
.work-thumb--media img,
.work-thumb--media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition), filter var(--transition),
    opacity var(--transition);
}
.work-thumb--media video { opacity: 0; }
.work-thumb--media.is-playing video { opacity: 1; }
.work-thumb--media.is-playing img { opacity: 0; }
.work-card:hover .work-thumb--media img { transform: scale(1.04); filter: brightness(0.75); }
.work-thumb--media::after {
  content: "\25B6";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: 0.9rem;
  padding-left: 3px;
  backdrop-filter: blur(3px);
  transition: opacity var(--transition);
}
.work-card:hover .work-thumb--media::after,
.work-thumb--media.is-playing::after { opacity: 0; }
/* platform badge, top-right of the thumb */
.work-platform {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 2;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.2rem 0.44rem;
  color: var(--text);
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}
.work-card:hover .work-platform { border-color: var(--accent); }

.work-body {
  padding: 1.2rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  flex: 1;
}
.work-title { font-size: 1.25rem; }
.work-role {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.78rem;
  margin: 0;
}
.work-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin: 0;
  flex: 1;
}
.work-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  font-family: var(--font-mono);
}
.work-tags li {
  font-size: 0.7rem;
  padding: 0.16rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text-muted);
  text-transform: lowercase;
}
.work-tags li::before { content: "#"; color: var(--accent); }
.work-links {
  display: flex;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.work-links a { color: var(--text); }
.work-links a::after { content: " \2197"; color: var(--accent); }
.work-links a:hover { color: var(--accent); }

/* ---------- Prototypes ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.filter-chip {
  padding: 0.35rem 0.8rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition),
    background var(--transition);
}
.filter-chip:hover { color: var(--text); border-color: var(--accent); }
.filter-chip.is-active {
  background: var(--accent-bright);
  border-color: var(--accent-bright);
  color: #0a0a0b;
}
.chip-count { opacity: 0.5; }
.filter-chip.is-active .chip-count { opacity: 0.7; }
.proto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0.85rem;
}
.proto-tile {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.proto-media {
  position: relative;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-elev-2);
}
.proto-media img,
.proto-media video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition), filter var(--transition),
    opacity var(--transition);
}
.proto-media video { opacity: 0; }
.proto-media.is-playing video { opacity: 1; }
.proto-media.is-playing img { opacity: 0; }
.proto-tile:hover .proto-media img { transform: scale(1.05); filter: brightness(0.7); }
.proto-media::after {
  content: "\25B6";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  padding-left: 3px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  font-size: 0.8rem;
  backdrop-filter: blur(3px);
  transition: opacity var(--transition);
}
.proto-tile:hover .proto-media::after,
.proto-media.is-playing::after { opacity: 0; }
.proto-name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.proto-tile:hover .proto-name { color: var(--accent); }
.proto-link {
  font-family: var(--font-mono);
  color: var(--accent);
  white-space: nowrap;
}
.proto-link:hover { text-decoration: underline; }

/* ---------- Testimonials ---------- */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}
.quote-card {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elev);
  padding: 1.5rem 1.35rem 1.25rem;
  margin: 0;
}
.quote-card::before {
  content: "\201C";
  position: absolute;
  top: -0.35rem;
  left: 0.75rem;
  font-family: var(--font-display);
  font-size: 2.4rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.55;
}
.quote-text {
  margin: 0 0 1rem;
  color: var(--text);
  font-size: 0.96rem;
  line-height: 1.6;
}
.quote-by {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  font-family: var(--font-mono);
}
.quote-name { font-size: 0.82rem; color: var(--text); }
.quote-title { font-size: 0.74rem; color: var(--text-faint); }

/* ---------- Experience (compact) ---------- */
.xp-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border);
}
.xp-item {
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--border);
}
.xp-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
}
.xp-role { font-size: 1.02rem; }
.xp-period {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-faint);
  white-space: nowrap;
}
.xp-company {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.82rem;
  margin: 0.2rem 0 0;
}
.xp-summary {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin: 0.4rem 0 0;
  max-width: 62ch;
}

/* ---------- Education (compact) ---------- */
.edu-block { margin-top: 2rem; }
.edu-heading {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-faint);
  margin-bottom: 1rem;
}
.edu-heading::before { content: "// "; }
.edu-list {
  display: grid;
  gap: 0.75rem;
}
.edu-item {
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
  flex-wrap: wrap;
}
.edu-period {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-faint);
  min-width: 5.5rem;
}
.edu-main { display: flex; gap: 0.5rem 0.9rem; flex-wrap: wrap; align-items: baseline; }
.edu-title { font-size: 0.96rem; font-weight: 600; }
.edu-org { color: var(--text-muted); font-size: 0.88rem; }

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}
.skill-group {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
  background: var(--bg-elev);
}
.skill-group h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: lowercase;
  letter-spacing: 0.02em;
  color: var(--text-faint);
  margin-bottom: 0.6rem;
}
.skill-group h3::before { content: "── "; color: var(--accent); }
.skill-group li {
  font-family: var(--font-mono);
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--grid);
  color: var(--text-muted);
  font-size: 0.82rem;
}
.skill-group li::before { content: "· "; color: var(--accent); }
.skill-group li:last-child { border-bottom: 0; }

/* ---------- Contact ---------- */
.section-contact .contact-inner {
  max-width: 46ch;
}
.contact-lead {
  color: var(--text-muted);
  font-size: 1.08rem;
  margin-bottom: 1.35rem;
}

/* Contact form (hidden until a Web3Forms key is set in main.js) */
.contact-form {
  display: grid;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}
.cf-field {
  display: grid;
  gap: 0.3rem;
}
.cf-field > span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: lowercase;
  letter-spacing: 0.02em;
  color: var(--text-faint);
}
.cf-field > span::before { content: "── "; color: var(--accent); }
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.6rem 0.7rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  transition: border-color var(--transition);
}
.contact-form textarea { resize: vertical; min-height: 5.5rem; }
.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.contact-form button[type="submit"] { justify-self: start; }
.cf-status {
  margin: 0;
  min-height: 1.2em;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}
.cf-status.is-ok { color: var(--accent); }
.cf-status.is-error { color: #ff6b6b; }
:root[data-theme="light"] .cf-status.is-error { color: #c0392b; }

/* mailto button demoted to secondary once the form is live */
#contactEmailBtn.is-secondary {
  background: var(--bg-elev);
  border-color: var(--border);
  color: var(--text);
  font-size: 0.82rem;
  --btn-pad-y: 0.55rem;
}
#contactEmailBtn.is-secondary:hover { border-color: var(--accent); color: var(--accent); }
.contact-social {
  display: flex;
  gap: 1.4rem;
  margin-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.contact-social a { color: var(--text-muted); }
.contact-social a::after { content: " ↗"; color: var(--accent); }
.contact-social a:hover { color: var(--accent); }

/* ---------- Footer / status bar ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg-elev);
  padding-block: 0.7rem;
  font-family: var(--font-mono);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem 1.5rem;
  color: var(--text-faint);
  font-size: 0.74rem;
}
.footer-inner p { margin: 0; }
.footer-inner p:first-child::before { content: "● "; color: var(--accent); }
.footer-note::after {
  content: "▮";
  margin-left: 0.35em;
  color: var(--accent);
  animation: caret 1.1s steps(1) infinite;
}
@keyframes caret { 50% { opacity: 0; } }

/* ---------- Reveal animation (snappy) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 340ms ease, transform 340ms ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Scroll progress bar ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 200;
  background: var(--accent-bright);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 80ms linear;
}

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  right: clamp(1rem, 4vw, 2rem);
  bottom: clamp(1.6rem, 5vw, 2.4rem);
  z-index: 90;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elev) 90%, transparent);
  backdrop-filter: blur(8px);
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition),
    color var(--transition), border-color var(--transition);
}
.to-top.is-visible {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.to-top:hover {
  color: var(--accent);
  border-color: var(--accent);
}

/* ---------- Clickable cards / tiles ---------- */
.is-clickable { cursor: crosshair; }
.work-card.is-clickable:focus-visible,
.proto-tile.is-clickable:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: grid;
  place-items: center;
  padding: clamp(1rem, 4vw, 3rem);
}
.lightbox[hidden] { display: none; }
.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 6, 9, 0.72);
  backdrop-filter: blur(6px);
  animation: lbFade 200ms ease;
}
.lightbox-panel {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  max-height: 100%;
  overflow-y: auto;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 40px 120px -30px rgba(0, 0, 0, 0.7);
  animation: lbPop 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
}
@keyframes lbFade { from { opacity: 0; } }
@keyframes lbPop {
  from { opacity: 0; transform: translateY(12px) scale(0.98); }
}
.lightbox-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  z-index: 2;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  cursor: pointer;
  backdrop-filter: blur(4px);
}
.lightbox-close { border-radius: var(--radius-sm); }
.lightbox-close:hover { background: var(--accent-bright); color: #0a0a0b; }
.lightbox-media {
  background: #000;
  aspect-ratio: 16 / 9;
  display: grid;
  place-items: center;
}
.lightbox-media.is-portrait { aspect-ratio: 3 / 4; max-height: 70vh; }
.lightbox-media video,
.lightbox-media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.lightbox-body {
  padding: clamp(1.25rem, 4vw, 2rem);
}
.lightbox-title { font-size: clamp(1.3rem, 4vw, 1.7rem); }
.lightbox-role {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.8rem;
  margin: 0.4rem 0 0;
}
.lightbox-desc {
  color: var(--text-muted);
  margin: 1rem 0 0;
  max-width: 62ch;
}
.lightbox-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.1rem;
  font-family: var(--font-mono);
}
.lightbox-tags li {
  font-size: 0.7rem;
  padding: 0.16rem 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  color: var(--text-muted);
  text-transform: lowercase;
}
.lightbox-tags li::before { content: "#"; color: var(--accent); }
.lightbox-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  margin-top: 1.3rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.lightbox-links a { color: var(--text); }
.lightbox-links a:hover { color: var(--accent); }

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

@media (max-width: 720px) {
  .nav {
    position: fixed;
    inset: 64px 0 auto 0;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
    padding: 1rem var(--gutter) 1.5rem;
    transform: translateY(-120%);
    transition: transform var(--transition);
    margin-left: 0;
  }
  .nav.is-open { transform: translateY(0); }
  .nav ul { flex-direction: column; gap: 0.25rem; }
  .nav a { display: block; padding: 0.7rem 0; font-size: 1rem; }
  .nav-toggle { display: flex; }
  .brand-name { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- Legal / long-form text page ---------- */
.legal {
  max-width: 66ch;
  margin-inline: auto;
  padding: clamp(3rem, 8vw, 5rem) var(--gutter) clamp(4rem, 10vw, 6rem);
}
.legal-back {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  display: inline-block;
  margin-bottom: 2.25rem;
}
.legal-back::before { content: "\2190  "; color: var(--accent); }
.legal-back:hover { color: var(--accent); }
.legal h1 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  margin-bottom: 0.5rem;
}
.legal-date {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-bottom: 2.5rem;
}
.legal-date::before { content: "// "; }
.legal h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 2.25rem 0 0.55rem;
}
.legal p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.legal a { color: var(--accent); }
.legal a:hover { text-decoration: underline; }

/* ---------- 404 page ---------- */
.nf {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  gap: 1rem;
  padding: var(--gutter);
  max-width: var(--container);
  margin-inline: auto;
}
.nf-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}
.nf-code::before { content: "// "; color: var(--text-faint); }
.nf h1 {
  font-family: var(--font-display);
  font-size: clamp(3rem, 14vw, 7rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin: 0;
}
.nf p {
  color: var(--text-muted);
  max-width: 44ch;
  margin: 0;
}
.nf-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: 0.6rem;
}