/* ============================================================
   Amirhossein Iravanimanesh — systems & blockchain portfolio
   Dark terminal/systems theme. No external dependencies.
   ============================================================ */

:root {
  --bg: #080b10;
  --bg-elev: #0d121a;
  --bg-elev-2: #111823;
  --line: #1d2734;
  --line-soft: #161f2b;
  --text: #d9e2ec;
  --text-dim: #93a3b5;
  --text-faint: #6a7b8d;
  --accent: #3ddc97;
  --accent-2: #6c8cff;
  --org: var(--accent);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --wrap: 68rem;
  --radius: 10px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { line-height: 1.2; letter-spacing: -0.02em; margin: 0; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

strong { color: #eaf1f8; font-weight: 600; }

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

.mono {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
}

.sep { color: var(--text-faint); padding: 0 0.15em; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--accent);
  color: #04180f;
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}
.skip-link:focus { left: 0.75rem; top: 0.75rem; }

.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;
}

/* ---------------- background canvas ---------------- */

#network-bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: -2;
  display: block;
}

.bg-veil {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(61, 220, 151, 0.09), transparent 60%),
    radial-gradient(90% 60% at 100% 10%, rgba(108, 140, 255, 0.08), transparent 65%),
    linear-gradient(to bottom, rgba(8, 11, 16, 0.02) 0%, rgba(8, 11, 16, 0.42) 45%, rgba(8, 11, 16, 0.72) 100%);
}

/* ---------------- header / nav ---------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background: rgba(8, 11, 16, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.site-header.is-scrolled {
  border-bottom-color: var(--line-soft);
  background: rgba(8, 11, 16, 0.9);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}
.brand:hover { text-decoration: none; color: #fff; }
.brand__dim { color: var(--text-faint); }
.brand__mark {
  width: 0.6rem;
  height: 0.6rem;
  border-radius: 2px;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.14);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}
.nav a {
  color: var(--text-dim);
  position: relative;
  padding: 0.25rem 0;
  transition: color 0.2s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--ease);
}
.nav a:hover { color: var(--text); text-decoration: none; }
.nav a.is-active { color: var(--accent); }
.nav a.is-active::after { transform: scaleX(1); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  background: none;
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
}
.nav-toggle span {
  display: block;
  width: 1rem;
  height: 1.5px;
  margin-inline: auto;
  background: var(--text-dim);
  transition: transform 0.25s var(--ease), opacity 0.2s var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ---------------- hero ---------------- */

.hero { padding: clamp(4rem, 12vh, 8rem) 0 clamp(3.5rem, 9vh, 6rem); }

.hero__inner { display: grid; gap: 1.35rem; max-width: 46rem; }

.prompt { color: var(--accent); margin: 0; }
.prompt__sigil { color: var(--text-faint); }
.prompt__dim { color: var(--text-faint); }

.caret {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  margin-left: 0.35em;
  background: var(--accent);
  vertical-align: -0.18em;
  animation: blink 1.15s steps(2, start) infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero__title {
  font-size: clamp(2.4rem, 7vw, 4rem);
  font-weight: 650;
  color: #f1f6fb;
}

.hero__role {
  font-size: clamp(0.875rem, 2.2vw, 1rem);
  color: var(--text-dim);
  text-transform: lowercase;
}

.hero__lede {
  font-size: clamp(1.03rem, 2.4vw, 1.15rem);
  color: var(--text-dim);
  max-width: 40rem;
}

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 1px;
  margin-top: 0.75rem;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
.stats li {
  background: rgba(13, 18, 26, 0.82);
  padding: 1rem 1.1rem;
  display: grid;
  gap: 0.3rem;
}
.stats__value {
  font-size: 1.1rem;
  color: var(--accent);
  letter-spacing: 0;
}
.stats__label {
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-faint);
}

.hero__actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 0.5rem;
  max-width: 32rem;
}

.hero__actions .btn {
  justify-content: center;
  width: 100%;
}

/* ---------------- glitch name ---------------- */

.glitch-name {
  position: relative;
  display: inline-block;
  color: #f1f6fb;
}

.glitch-name__text,
.glitch-name__layer {
  display: inline-block;
}

.glitch-name__layer {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
}

.glitch-name.is-glitching .glitch-name__layer--a {
  opacity: 0.92;
  color: var(--accent);
  transform: translate(-4px, -2px);
  clip-path: inset(6% 0 48% 0);
  text-shadow: 2px 0 rgba(61, 220, 151, 0.55);
}

.glitch-name.is-glitching .glitch-name__layer--b {
  opacity: 0.92;
  color: var(--accent-2);
  transform: translate(4px, 2px);
  clip-path: inset(48% 0 4% 0);
  text-shadow: -2px 0 rgba(108, 140, 255, 0.55);
}

.glitch-name.is-glitching .glitch-name__text {
  animation: nameGlitch 560ms steps(4, end);
  text-shadow: 0 0 12px rgba(61, 220, 151, 0.25);
}

@keyframes nameGlitch {
  0%, 100% { transform: none; filter: none; }
  12% { transform: translate(-3px, 1px) skewX(-3deg); filter: hue-rotate(35deg); }
  28% { transform: translate(4px, -2px) skewX(4deg); }
  44% { transform: translate(-2px, -2px); filter: hue-rotate(-25deg) contrast(1.15); }
  60% { transform: translate(3px, 2px) skewX(-2deg); }
  76% { transform: translate(-4px, 0); filter: hue-rotate(18deg); }
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 24, 35, 0.6);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease);
}
.btn:hover {
  text-decoration: none;
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn--primary {
  border-color: rgba(61, 220, 151, 0.45);
  background: rgba(61, 220, 151, 0.1);
  color: var(--accent);
}
.btn--primary:hover { background: rgba(61, 220, 151, 0.17); }

.btn--cta {
  margin-top: auto;
  align-self: start;
  border-color: rgba(247, 201, 72, 0.45);
  background: rgba(247, 201, 72, 0.08);
  color: #f7c948;
}
.btn--cta:hover {
  border-color: #f7c948;
  color: #ffe08a;
  background: rgba(247, 201, 72, 0.14);
}

.hero__note {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text-faint);
  margin-top: 0.5rem;
}
.pulse {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 rgba(61, 220, 151, 0.5);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(61, 220, 151, 0.45); }
  70% { box-shadow: 0 0 0 0.6rem rgba(61, 220, 151, 0); }
  100% { box-shadow: 0 0 0 0 rgba(61, 220, 151, 0); }
}

/* ---------------- sections ---------------- */

.section {
  padding: clamp(3.5rem, 9vh, 6rem) 0;
  content-visibility: auto;
  contain-intrinsic-size: auto 480px;
}
.section--contact {
  padding-top: clamp(2rem, 5vh, 3.5rem);
  padding-bottom: clamp(4rem, 10vh, 7rem);
}

.section__head { margin-bottom: 2.5rem; max-width: 44rem; }
.section__index { color: var(--accent); margin-bottom: 0.5rem; }
.section__title {
  font-size: clamp(1.6rem, 4.2vw, 2.1rem);
  font-weight: 620;
  color: #eef4fa;
  display: flex;
  align-items: center;
  gap: 1rem;
}
.section__title::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line), transparent);
}
.section__sub { color: var(--text-faint); margin-top: 0.6rem; font-size: 0.95rem; }

/* ---------------- timeline ---------------- */

.timeline { position: relative; padding-left: 2.25rem; }

.timeline__spine {
  position: absolute;
  left: 0.44rem;
  top: 0.35rem;
  bottom: 0.35rem;
  width: 2px;
  background: var(--line);
  border-radius: 2px;
  overflow: hidden;
}
.timeline__progress {
  display: block;
  width: 100%;
  height: 0;
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
  transition: height 0.15s linear;
}

.timeline__list { display: grid; gap: 2.25rem; }

.tl-item {
  position: relative;
  padding: 1.4rem 1.5rem;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(to right, rgba(13, 18, 26, 0.85), rgba(13, 18, 26, 0.55));
  transition: border-color 0.35s var(--ease), transform 0.35s var(--ease), box-shadow 0.35s var(--ease);
}
.tl-item::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: linear-gradient(to right, color-mix(in srgb, var(--org) 7%, transparent), transparent 55%);
  opacity: 0;
  transition: opacity 0.35s var(--ease);
}
.tl-item:hover,
.tl-item.is-active {
  border-left-color: var(--org);
  transform: translateX(3px);
}
.tl-item:hover::before,
.tl-item.is-active::before { opacity: 1; }
.tl-item.is-active {
  box-shadow: -6px 0 24px -18px var(--org);
}

.tl-item__marker {
  position: absolute;
  left: -2.06rem;
  top: 1.65rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--line);
  transition: border-color 0.35s var(--ease), box-shadow 0.35s var(--ease), background 0.35s var(--ease);
}
.tl-item.is-active .tl-item__marker,
.tl-item:hover .tl-item__marker {
  border-color: var(--org);
  background: var(--org);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--org) 18%, transparent);
}

.tl-item__period { color: var(--org); margin-bottom: 0.45rem; }

.tl-item__role {
  font-size: 1.1rem;
  font-weight: 600;
  color: #eef4fa;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}
.tl-item__org {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--org);
  padding: 0.18rem 0.5rem;
  border: 1px solid color-mix(in srgb, var(--org) 32%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--org) 10%, transparent);
}

.tl-item__meta { color: var(--text-faint); margin-top: 0.45rem; }

.tl-item__points {
  display: grid;
  gap: 0.5rem;
  margin-top: 1rem;
  color: var(--text-dim);
  font-size: 0.95rem;
}
.tl-item__points li { position: relative; padding-left: 1.15rem; }
.tl-item__points li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: -0.05rem;
  color: var(--org);
  opacity: 0.75;
  font-size: 0.8rem;
}

/* ---------------- tags ---------------- */

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1.1rem;
}
.tags li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  color: var(--text-faint);
  padding: 0.22rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: rgba(8, 11, 16, 0.5);
}
.tags--lg li { font-size: 0.8125rem; padding: 0.32rem 0.65rem; }
.stack-group:hover .tags--lg li { border-color: var(--line); }

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

.cards { display: grid; gap: 1.5rem; }
.cards--research { grid-template-columns: 1fr; }
.cards--projects { grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr)); }
.cards--edu { grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); }

.card {
  position: relative;
  padding: 1.5rem;
  border: 1px solid var(--line-soft);
  border-top: 2px solid color-mix(in srgb, var(--org) 55%, transparent);
  border-radius: var(--radius);
  background: linear-gradient(to bottom, rgba(13, 18, 26, 0.9), rgba(11, 15, 21, 0.6));
  transition: transform 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  border-top-color: var(--org);
  box-shadow: 0 18px 40px -30px var(--org);
}

.card__kicker { color: var(--org); margin-bottom: 0.55rem; }
.card__title { font-size: 1.12rem; font-weight: 600; color: #eef4fa; }
.card__org { color: var(--text-faint); margin-top: 0.4rem; }
.card__body { color: var(--text-dim); font-size: 0.95rem; margin-top: 0.75rem; }

.card__points {
  display: grid;
  gap: 0.5rem;
  margin-top: 0.9rem;
  color: var(--text-dim);
  font-size: 0.93rem;
}
.card__points li { position: relative; padding-left: 1.15rem; }
.card__points li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--org);
  opacity: 0.7;
  font-size: 0.8rem;
}

.card__note {
  margin-top: 1rem;
  padding: 0.65rem 0.8rem;
  color: var(--text-faint);
  line-height: 1.55;
  border-left: 2px solid var(--line);
  background: rgba(8, 11, 16, 0.45);
  border-radius: 0 6px 6px 0;
}

.card__link {
  margin-top: auto;
  padding-top: 1.1rem;
  color: var(--org);
  align-self: start;
}

/* ---------------- research card effects ---------------- */

.card--lightning,
.card--green {
  position: relative;
  overflow: hidden;
  padding: 0;
  contain: layout paint;
}

.card--lightning {
  border: 1px solid rgba(247, 201, 72, 0.22);
  border-top: 1px solid rgba(247, 201, 72, 0.22);
}

.card--lightning:hover,
.card--lightning.is-active,
.card--lightning:focus-within {
  border-color: rgba(247, 201, 72, 0.38);
  box-shadow: 0 18px 40px -30px rgba(247, 201, 72, 0.45);
}

.card--green {
  border: 1px solid rgba(61, 220, 151, 0.22);
  border-top: 1px solid rgba(61, 220, 151, 0.22);
}

.card--green:hover,
.card--green.is-active,
.card--green:focus-within {
  border-color: rgba(61, 220, 151, 0.38);
  box-shadow: 0 18px 40px -30px rgba(61, 220, 151, 0.45);
}

.card__lightning-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  border-radius: inherit;
  contain: strict;
}

.card__lightning-panel {
  position: relative;
  z-index: 1;
  margin: 3px;
  padding: calc(1.5rem - 3px);
  border-radius: calc(var(--radius) - 3px);
  background: linear-gradient(to bottom, rgba(13, 18, 26, 0.97), rgba(11, 15, 21, 0.94));
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card--lightning > :not(.card__lightning-canvas),
.card--green > :not(.card__lightning-canvas) {
  position: relative;
  z-index: 1;
}

/* ---------------- stack ---------------- */

.stack-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}

.stack-grid--icons {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stack-group {
  padding: 1.35rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: rgba(13, 18, 26, 0.7);
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.stack-group--icons:hover {
  border-color: rgba(61, 220, 151, 0.25);
  box-shadow: 0 12px 32px -24px rgba(61, 220, 151, 0.35);
  transform: translateY(-2px);
}

.stack-group__title {
  color: var(--accent);
  text-transform: lowercase;
  letter-spacing: 0.06em;
  font-weight: 500;
  font-size: 0.8125rem;
}

.stack-icons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(5.5rem, 1fr));
  gap: 0.65rem;
  margin-top: 1rem;
}

.stack-icons li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.65rem 0.4rem;
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: rgba(8, 11, 16, 0.55);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.stack-icons li:hover {
  border-color: rgba(61, 220, 151, 0.3);
  transform: translateY(-2px);
}

.stack-icons img {
  width: 2rem;
  height: 2rem;
  object-fit: contain;
}

.stack-icons span {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--text-faint);
  text-align: center;
  line-height: 1.2;
}

.stack-group__more {
  margin-top: 0.85rem;
  color: var(--text-faint);
  line-height: 1.5;
  font-size: 0.75rem;
}

/* ---------------- contact ---------------- */

.contact__lede { color: var(--text-dim); font-size: 1.03rem; max-width: 40rem; }
.contact__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 1.75rem; }
.contact__links {
  display: grid;
  gap: 0.5rem;
  margin-top: 1.75rem;
  color: var(--text-faint);
}

/* ---------------- footer ---------------- */

.site-footer {
  border-top: 1px solid var(--line-soft);
  padding: 1.75rem 0;
  background: rgba(8, 11, 16, 0.7);
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: flex-end;
  color: var(--text-faint);
}
.footer-inner a { color: var(--text-dim); }
.footer-inner a:hover { color: var(--accent); }

/* ---------------- scroll reveal ---------------- */

/* Hidden only when JavaScript can reveal them again. */
.js .reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}
.js .reveal.is-visible { opacity: 1; transform: none; }

.js .hero .reveal { transition-delay: calc(var(--i, 0) * 70ms); }

/* ---------------- responsive ---------------- */

@media (max-width: 46rem) {
  .nav-toggle { display: flex; }

  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 0 clamp(1.25rem, 5vw, 3rem);
    background: rgba(8, 11, 16, 0.97);
    border-bottom: 1px solid var(--line-soft);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    transition: max-height 0.3s var(--ease), visibility 0.3s var(--ease);
  }
  .nav.is-open {
    max-height: 22rem;
    visibility: visible;
    padding-block: 0.75rem 1.25rem;
  }
  .nav a { width: 100%; padding: 0.7rem 0; }
  .nav a::after { display: none; }

  .timeline { padding-left: 1.75rem; }
  .tl-item { padding: 1.2rem 1.15rem; }
  .tl-item__marker { left: -1.6rem; top: 1.45rem; }
  .tl-item:hover, .tl-item.is-active { transform: none; }
  .card:hover { transform: none; }
  .section__title::after { display: none; }

  .hero__actions {
    grid-template-columns: 1fr;
    max-width: none;
  }

  .stack-grid--icons {
    grid-template-columns: 1fr;
  }
}

/* ---------------- 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;
  }

  .js .reveal { opacity: 1; transform: none; }
  .caret { animation: none; }
  .timeline__progress { display: none; }
  .timeline__spine { background: linear-gradient(to bottom, var(--accent), var(--accent-2)); opacity: 0.5; }
  .glitch-name.is-glitching .glitch-name__text { animation: none; }
  .card--lightning .card__lightning-canvas,
  .card--green .card__lightning-canvas { display: none; }
  .card--lightning .card__lightning-panel {
    margin: 0;
    border: 1px solid rgba(247, 201, 72, 0.35);
  }
  .card--green .card__lightning-panel {
    margin: 0;
    border: 1px solid rgba(61, 220, 151, 0.35);
  }
}

/* Fallback for browsers without color-mix() */
@supports not (color: color-mix(in srgb, red 50%, transparent)) {
  .tl-item__org { border-color: var(--line); background: rgba(255, 255, 255, 0.03); }
  .card { border-top-color: var(--org); }
}