/* ============================================================================
   Jonas Ryan Charles — Futuristic EE Portfolio
   Design system + component library
   Built with no frameworks / no build step. Works via file://.

   NEXT IMPLEMENTER — READ THIS:
   Use the design tokens and component classes defined here. Do not add new CSS
   unless a trivial utility is genuinely missing. Reference cheat-sheet:

     TOKENS       --bg, --bg-raised, --bg-card, --signal, --signal-dim,
                  --trace-amber, --ink, --ink-dim, --grid-line
     TYPE SCALE   --fs-xs … --fs-6xl  (clamp-based, fluid)
     SPACE SCALE  --space-1 … --space-16  (0.25rem base, x2 rhythm)
     COMPONENTS   .card / .card__pin / .card__index
                  .btn / .btn--solid / .btn--outline
                  .chip  (with .chip__led for the pulsing dot)
                  .tag   (mono tool tags inside cards)
                  .section / .section__label  (the "// 0N — LABEL" header)
                  .grid / .grid--2 / .grid--3 / .grid--4
                  .reveal  (scroll-reveal hook — JS toggles .is-visible)
   ============================================================================ */

/* ---------------------------------------------------------------------------
   0. Design tokens
   --------------------------------------------------------------------------- */
:root {
  /* Palette (from brief) */
  --bg: #0a0e14;
  --bg-raised: #0f1520;
  --bg-card: #111a26;
  --signal: #00e5a0;
  --signal-dim: rgba(0, 229, 160, 0.35);
  --trace-amber: #ffb454;
  --ink: #e6edf3;
  --ink-dim: #8b98a9;
  --grid-line: rgba(139, 152, 169, 0.08);

  /* Derived surfaces / borders */
  --border: rgba(139, 152, 169, 0.14);
  --border-strong: rgba(139, 152, 169, 0.28);
  --signal-glow: rgba(0, 229, 160, 0.18);

  /* Typography — three roles: display (headings), sans (reading), mono (data) */
  --font-display: "Chakra Petch", "Space Grotesk", ui-sans-serif, system-ui,
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-sans: "Space Grotesk", ui-sans-serif, system-ui, -apple-system,
    "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Code",
    "Consolas", "Liberation Mono", monospace;

  /* Fluid type scale (min → max via clamp; 360px → 1440px+) */
  --fs-xs: 0.75rem;        /* 12px — mono micro-labels */
  --fs-sm: 0.8125rem;      /* 13px */
  --fs-base: clamp(0.95rem, 0.9rem + 0.2vw, 1.05rem);
  --fs-md: clamp(1.05rem, 1rem + 0.3vw, 1.2rem);
  --fs-lg: clamp(1.25rem, 1.1rem + 0.6vw, 1.5rem);
  --fs-xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --fs-2xl: clamp(1.9rem, 1.6rem + 1.6vw, 2.75rem);
  --fs-3xl: clamp(2.4rem, 1.9rem + 2.4vw, 3.5rem);
  --fs-4xl: clamp(3rem, 2.2rem + 3.6vw, 4.75rem);

  /* Spacing scale (0.25rem base) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 4rem;
  --space-12: 5rem;
  --space-16: 7rem;

  /* Radii, shadows, motion */
  --radius-sm: 4px;
  --radius: 10px;
  --radius-lg: 16px;
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.02),
    0 12px 40px -24px rgba(0, 0, 0, 0.9);
  --shadow-glow: 0 0 0 1px var(--signal-dim),
    0 8px 40px -12px var(--signal-glow);
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --dur: 0.6s;

  /* Layout */
  --nav-h: 68px;
  --maxw: 1160px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

/* ---------------------------------------------------------------------------
   1. Reset / base
   --------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;

  /* PCB / graph-paper grid background — subtle layered gradients */
  background-image:
    radial-gradient(
      1200px 600px at 70% -10%,
      rgba(0, 229, 160, 0.06),
      transparent 60%
    ),
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 100% 100%, 40px 40px, 40px 40px;
  background-position: 0 0, 0 0, 0 0;
  background-attachment: fixed;
}

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

a {
  color: inherit;
  text-decoration: none;
}

h1,
h2,
h3,
h4,
p,
figure {
  margin: 0;
}

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

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--signal-dim);
  color: var(--ink);
}

/* Screen-reader-only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -60px;
  transform: translateX(-50%);
  background: var(--signal);
  color: #04120c;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  z-index: 200;
  transition: top 0.2s var(--ease);
}
.skip-link:focus {
  top: 12px;
}

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

.section {
  position: relative;
  padding-block: var(--space-16);
}

.section--tight {
  padding-block: var(--space-10);
}

/* Terminal-style section header:  // 01 — RESEARCH & PROJECTS */
.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: var(--space-4);
}
.section__label::before {
  content: "";
  width: 26px;
  height: 1px;
  background: linear-gradient(90deg, var(--signal), transparent);
}

.section__title {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 600;
  letter-spacing: 0;
  line-height: 1.08;
  max-width: 22ch;
}

.section__intro {
  margin-top: var(--space-4);
  max-width: 60ch;
  color: var(--ink-dim);
  font-size: var(--fs-md);
}

.section__head {
  margin-bottom: var(--space-8);
}

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--space-5);
}
.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}
.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}
.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 860px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

/* Mono eyebrow / data text */
.mono {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.08em;
}
.text-dim {
  color: var(--ink-dim);
}
.accent {
  color: var(--signal);
}

/* ---------------------------------------------------------------------------
   3. Components — Buttons
   --------------------------------------------------------------------------- */
.btn {
  --btn-fg: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.7rem 1.35rem;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
  color: var(--btn-fg);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease),
    box-shadow 0.2s var(--ease), background-color 0.2s var(--ease),
    color 0.2s var(--ease);
}
.btn:hover {
  transform: translateY(-2px);
}
.btn:active {
  transform: translateY(0);
}

.btn--solid {
  background: var(--signal);
  border-color: var(--signal);
  color: #04120c;
  font-weight: 600;
}
.btn--solid:hover {
  box-shadow: 0 10px 30px -10px var(--signal-glow);
}

.btn--outline {
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn--outline:hover {
  border-color: var(--signal);
  color: var(--signal);
  box-shadow: inset 0 0 0 1px var(--signal-dim);
}

.btn__arrow {
  transition: transform 0.2s var(--ease);
}
.btn:hover .btn__arrow {
  transform: translateX(3px);
}

/* ---------------------------------------------------------------------------
   4. Components — Chip (availability + generic) with status LED
   --------------------------------------------------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.4rem 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 100px;
  white-space: nowrap;
}

.chip__led {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 0 var(--signal-dim);
  animation: led-pulse 2.4s ease-in-out infinite;
  flex: none;
}

@keyframes led-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 var(--signal-dim);
    opacity: 1;
  }
  50% {
    box-shadow: 0 0 0 6px rgba(0, 229, 160, 0);
    opacity: 0.7;
  }
}

/* ---------------------------------------------------------------------------
   5. Components — Tag (mono tool tag, used inside cards)
   --------------------------------------------------------------------------- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  background: rgba(139, 152, 169, 0.06);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.tag--signal {
  color: var(--signal);
  border-color: var(--signal-dim);
  background: rgba(0, 229, 160, 0.06);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------------------------------------------------------------------------
   6. Components — Card (with chip-pin corners + hover glow)
   --------------------------------------------------------------------------- */
.card {
  position: relative;
  padding: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: clip;
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease),
    box-shadow 0.3s var(--ease);
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--signal);
  box-shadow: var(--shadow-glow);
}

/* "chip pin" decorations — small notch marks at the corners */
.card__pin {
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid var(--border-strong);
  pointer-events: none;
  transition: border-color 0.3s var(--ease);
}
.card__pin--tl {
  top: 10px;
  left: 10px;
  border-right: 0;
  border-bottom: 0;
}
.card__pin--tr {
  top: 10px;
  right: 10px;
  border-left: 0;
  border-bottom: 0;
}
.card__pin--bl {
  bottom: 10px;
  left: 10px;
  border-right: 0;
  border-top: 0;
}
.card__pin--br {
  bottom: 10px;
  right: 10px;
  border-left: 0;
  border-top: 0;
}
.card:hover .card__pin {
  border-color: var(--signal);
}

.card__index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--signal);
}

.card__title {
  margin-top: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  letter-spacing: 0;
}

.card__body {
  margin-top: var(--space-3);
  color: var(--ink-dim);
  font-size: var(--fs-base);
}

.card__motif {
  color: var(--signal);
  opacity: 0.55;
  margin-top: var(--space-4);
  transition: opacity 0.3s var(--ease);
}
.card:hover .card__motif {
  opacity: 1;
}

/* ---------------------------------------------------------------------------
   7. Nav (fixed, backdrop-blur)
   --------------------------------------------------------------------------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--nav-h);
  z-index: 100;
  display: flex;
  align-items: center;
  background: color-mix(in srgb, var(--bg) 72%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s var(--ease), border-color 0.3s var(--ease);
}
/* Fallback if backdrop-filter unsupported */
@supports not (backdrop-filter: blur(1px)) {
  .nav {
    background: color-mix(in srgb, var(--bg) 94%, transparent);
  }
}
.nav.is-scrolled {
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  border-bottom-color: var(--border-strong);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  width: 100%;
}

/* JRC logomark with trace motif */
.logomark {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--ink);
}
.logomark svg {
  color: var(--signal);
}
.logomark:hover {
  color: var(--signal);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}
.nav__link {
  position: relative;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.06em;
  color: var(--ink-dim);
  padding: var(--space-1) 0;
  transition: color 0.2s var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: var(--signal);
  transition: width 0.25s var(--ease);
}
.nav__link:hover,
.nav__link:focus-visible {
  color: var(--ink);
}
.nav__link:hover::after,
.nav__link:focus-visible::after {
  width: 100%;
}

.nav__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Nav link cluster (email / linkedin / github / resume) */
.nav__social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-dim);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav__social-link svg {
  flex: none;
}
.nav__social-link:hover,
.nav__social-link:focus-visible {
  color: var(--signal);
}
.nav__social-link--cta {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  color: var(--ink);
}
.nav__social-link--cta:hover,
.nav__social-link--cta:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
}
/* Placeholder links (no real URL yet) read as pending, not broken. */
.nav__social-link[href="#"] {
  opacity: 0.55;
}

/* Collapse to icons on tighter widths so the nav never crowds. */
@media (max-width: 1100px) {
  .nav__social-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }
  .nav__social-link--cta {
    padding: 0.4rem 0.5rem;
  }
}
@media (max-width: 480px) {
  .nav__right {
    gap: var(--space-3);
  }
}

@media (max-width: 720px) {
  .nav__links {
    display: none;
  }
}

/* ---------------------------------------------------------------------------
   8. Hero + oscilloscope waveform
   --------------------------------------------------------------------------- */
.hero {
  position: relative;
  /* Start hero content ~72–104px below the fixed header (no vertical
     centring — content top-aligns so the name sits in the upper-left). */
  padding-top: calc(var(--nav-h) + clamp(72px, 8vh, 104px));
  padding-bottom: var(--space-10);
  min-height: min(90vh, 880px);
  display: flex;
  align-items: flex-start;
  overflow: hidden;
}

.hero__inner {
  position: relative;
  z-index: 2;
  max-width: 46rem;
}

.hero__kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--signal);
  margin-bottom: var(--space-5);
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
}
.hero__kicker::before {
  content: "";
  width: 34px;
  height: 1px;
  background: var(--signal);
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--fs-4xl);
  font-weight: 700;
  line-height: 0.94;
  letter-spacing: 0.005em;
  text-transform: uppercase;
}
.hero__title-line {
  display: block;
}
/* Second surname line sits a touch dimmer for depth. */
.hero__title-line:last-child {
  color: color-mix(in srgb, var(--ink) 82%, var(--bg));
}
.hero__title .accent {
  color: var(--signal);
  text-shadow: 0 0 28px var(--signal-dim);
}

.hero__subline {
  margin-top: var(--space-5);
  max-width: 54ch;
  font-size: var(--fs-md);
  color: var(--ink-dim);
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.08em;
  color: var(--ink-dim);
}
.hero__stats .dot {
  color: var(--signal);
}

/* ---------------------------------------------------------------------------
   9. Circuit-trace section divider
   --------------------------------------------------------------------------- */
.divider {
  position: relative;
  width: 100%;
  height: 48px;
  color: var(--signal);
}
.divider svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}
/* The trace path draws itself in when revealed */
.divider .trace-path {
  stroke: currentColor;
  stroke-width: 1.5;
  fill: none;
  stroke-dasharray: var(--trace-len, 1200);
  stroke-dashoffset: var(--trace-len, 1200);
  opacity: 0.5;
  transition: stroke-dashoffset 1.4s var(--ease), opacity 0.6s var(--ease);
}
.divider.is-visible .trace-path {
  stroke-dashoffset: 0;
  opacity: 0.85;
}
.divider .via {
  fill: var(--signal);
  opacity: 0;
  transition: opacity 0.4s var(--ease) 0.8s;
}
.divider.is-visible .via {
  opacity: 1;
}

/* ---------------------------------------------------------------------------
   10. Capabilities strip
   --------------------------------------------------------------------------- */
.cap-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: clip;
  background: var(--bg-raised);
}
.cap {
  padding: var(--space-6) var(--space-5);
  border-right: 1px solid var(--border);
  transition: background-color 0.3s var(--ease);
}
.cap:last-child {
  border-right: 0;
}
.cap:hover {
  background: rgba(0, 229, 160, 0.04);
}
.cap__index {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--signal);
  letter-spacing: 0.12em;
}
.cap__name {
  margin-top: var(--space-2);
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 600;
}
.cap__meta {
  margin-top: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--ink-dim);
}
@media (max-width: 860px) {
  .cap {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .cap:last-child {
    border-bottom: 0;
  }
}

/* ---------------------------------------------------------------------------
   11. Skills — instrument/readout panels
   --------------------------------------------------------------------------- */
.panel {
  position: relative;
  padding: var(--space-5);
  background: linear-gradient(180deg, var(--bg-card), var(--bg-raised));
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-4);
  border-bottom: 1px dashed var(--border-strong);
}
.panel__title {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
}
.panel__led {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--trace-amber);
  box-shadow: 0 0 8px var(--trace-amber);
  flex: none;
}
.panel__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ---------------------------------------------------------------------------
   12. Experience — vertical timeline w/ via-dot markers
   --------------------------------------------------------------------------- */
.timeline {
  position: relative;
  margin-left: var(--space-2);
  padding-left: var(--space-6);
  border-left: 1px solid var(--border-strong);
}
.tl-item {
  position: relative;
  padding-bottom: var(--space-8);
}
.tl-item:last-child {
  padding-bottom: 0;
}
/* via-dot marker */
.tl-item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-6) - 5px);
  top: 6px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--signal);
  box-shadow: 0 0 0 3px var(--bg), 0 0 12px -2px var(--signal-glow);
}
.tl-item__meta {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  color: var(--signal);
  text-transform: uppercase;
}
.tl-item__role {
  margin-top: var(--space-1);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 600;
}
.tl-item__org {
  color: var(--ink-dim);
  font-size: var(--fs-base);
}
.tl-item__body {
  margin-top: var(--space-3);
  color: var(--ink-dim);
}
.tl-item__body li {
  position: relative;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
}
.tl-item__body li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--signal);
}

/* ---------------------------------------------------------------------------
   13. Contact
   --------------------------------------------------------------------------- */
.contact__title {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.005em;
  line-height: 1;
  color: var(--ink);
}
.contact__title .accent {
  color: var(--signal);
}
.contact__grid {
  margin-top: var(--space-8);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}
.contact__row {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}
.contact__row:hover {
  border-color: var(--signal);
  transform: translateY(-3px);
}
.contact__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-dim);
}
.contact__value {
  font-size: var(--fs-md);
  font-weight: 500;
  word-break: break-word;
}
.contact__value:hover {
  color: var(--signal);
}

/* ---------------------------------------------------------------------------
   14. Footer
   --------------------------------------------------------------------------- */
.footer {
  padding-block: var(--space-8);
  border-top: 1px solid var(--border);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--ink-dim);
}
.footer__signoff {
  color: var(--ink-dim);
  opacity: 0.7;
}

/* ---------------------------------------------------------------------------
   15. Scroll-reveal
   --------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
  will-change: opacity, transform;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
/* Stagger children via inline --i or nth-child */
.reveal[style*="--i"] {
  transition-delay: calc(var(--i) * 80ms);
}

/* ---------------------------------------------------------------------------
   16. prefers-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;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
  .divider .trace-path {
    stroke-dashoffset: 0;
    opacity: 0.8;
  }
  .divider .via {
    opacity: 1;
  }
  .chip__led {
    animation: none;
  }
}