/* ============================================================
   Aditya Jethani — Portfolio
   Design system: "Epoch by epoch" research/experiment console
   Author build: warm ink canvas + electric-lime signal accent
   ============================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
ul { list-style: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 2px; }

/* ---------- Tokens (dark default) ---------- */
:root {
  --bg:        #0b0c0e;
  --bg-1:      #101216;
  --bg-2:      #15171c;
  --bg-3:      #1c1f25;
  --line:      rgba(255,255,255,.09);
  --line-2:    rgba(255,255,255,.16);
  --text:      #ecebe4;
  --text-dim:  #a4a6ab;
  --text-faint:#6c6f76;
  --accent:    #4d9bff;   /* azure — confident, professional */
  --accent-d:  #2f80ed;
  --accent-soft: rgba(77,155,255,.14);
  --warm:      #e8744f;   /* clay, used sparingly */
  --on-accent: #ffffff;
  --grid:      rgba(255,255,255,.035);
  --shadow:    0 24px 60px -24px rgba(0,0,0,.7);

  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body:    "Manrope", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --maxw: 1180px;
  --pad: clamp(20px, 5vw, 64px);
  --radius: 16px;
}

[data-theme="light"] {
  --bg:        #f3f1ea;
  --bg-1:      #ffffff;
  --bg-2:      #fbfaf6;
  --bg-3:      #f0eee6;
  --line:      rgba(20,20,20,.12);
  --line-2:    rgba(20,20,20,.2);
  --text:      #15171a;
  --text-dim:  #54565c;
  --text-faint:#8a8d94;
  --accent:    #0a66d6;   /* deeper azure for contrast on paper */
  --accent-d:  #084ea3;
  --accent-soft: rgba(10,102,214,.10);
  --warm:      #c5502a;
  --on-accent: #ffffff;
  --grid:      rgba(0,0,0,.04);
  --shadow:    0 24px 50px -28px rgba(40,40,30,.35);
}

/* ---------- Base ---------- */
html, body { background: var(--bg); }
body {
  font-family: var(--font-body);
  color: var(--text);
  font-size: 17px;
  line-height: 1.6;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  transition: background .5s ease, color .5s ease;
}
/* faint graph-paper field */
body::before {
  content: "";
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 46px 46px;
  z-index: 0; pointer-events: none;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 25%, transparent 80%);
          mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 25%, transparent 80%);
}

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--pad); }
.relative { position: relative; z-index: 1; }
section { position: relative; z-index: 1; }

/* ---------- Type ---------- */
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; line-height: 1.04; letter-spacing: -.02em; }
.mono { font-family: var(--font-mono); }
.accent { color: var(--accent); }
.dim { color: var(--text-dim); }

/* kicker / run label */
.kicker {
  font-family: var(--font-mono);
  font-size: 12.5px; font-weight: 500;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--text-faint);
  display: inline-flex; align-items: center; gap: 10px;
}
.kicker::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:.35} }

.section-head { margin-bottom: clamp(36px, 5vw, 64px); }
.section-head h2 {
  font-size: clamp(34px, 6vw, 62px);
  margin-top: 18px; max-width: 16ch;
}
.section-head p { color: var(--text-dim); max-width: 56ch; margin-top: 18px; font-size: 17px; }

.section { padding-block: clamp(72px, 11vw, 150px); }
.divider { height: 1px; background: var(--line); border: 0; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px var(--pad);
  transition: background .35s ease, border-color .35s ease, padding .35s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
  padding-block: 12px;
}
.brand { display: inline-flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 700; letter-spacing: -.02em; }
.brand .mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: grid; place-items: center;
  background: var(--accent); color: var(--on-accent);
  font-family: var(--font-mono); font-weight: 700; font-size: 15px;
}
.brand small { color: var(--text-faint); font-family: var(--font-mono); font-weight: 500; font-size: 12px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  font-family: var(--font-mono); font-size: 13.5px; color: var(--text-dim);
  padding: 9px 14px; border-radius: 9px; position: relative; transition: color .2s;
}
.nav-links a:hover { color: var(--text); }
.nav-links a.active { color: var(--text); }
.nav-links a.active .idx { color: var(--accent); }
.nav-links a .idx { color: var(--accent); margin-right: 6px; font-size: 11px; }
.nav-cta {
  background: var(--accent) !important; color: var(--on-accent) !important;
  font-weight: 600; padding: 9px 16px !important;
}
.nav-cta:hover { filter: brightness(1.06); }
.nav-tools { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  border: 1px solid var(--line); color: var(--text-dim); transition: all .2s;
}
.icon-btn:hover { color: var(--text); border-color: var(--line-2); background: var(--bg-2); }
.menu-toggle { display: none; }

/* ---------- Hero ---------- */
.hero { position: relative; padding-top: clamp(120px, 16vh, 180px); padding-bottom: clamp(60px, 8vw, 100px); overflow: hidden; }
.hero-loss { position: absolute; inset: 0; z-index: 0; opacity: .5; pointer-events: none; }
.hero-loss svg { width: 100%; height: 100%; }
.loss-line { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-dasharray: 2400; stroke-dashoffset: 2400; animation: draw 3.6s cubic-bezier(.6,.01,.2,1) forwards; opacity: .55; }
.loss-area { fill: url(#lossgrad); opacity: .18; }
@keyframes draw { to { stroke-dashoffset: 0; } }

.hero-grid { display: grid; grid-template-columns: 1.25fr .85fr; gap: clamp(32px, 5vw, 72px); align-items: center; }
.hero-status {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--text-dim);
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 14px 7px 12px;
  background: var(--bg-1);
}
.hero-status b { color: var(--text); font-weight: 600; }
.hero-status .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); animation: pulse 2s infinite; }
.hero h1 {
  font-size: clamp(44px, 9vw, 104px); line-height: .96; margin-top: 26px; letter-spacing: -.035em;
}
.hero h1 .grad { color: var(--accent); }
.hero-sub { font-size: clamp(18px, 2.4vw, 23px); color: var(--text-dim); max-width: 46ch; margin-top: 26px; line-height: 1.55; }
.hero-sub b { color: var(--text); font-weight: 600; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 14px; font-weight: 500;
  padding: 14px 22px; border-radius: 12px; transition: all .22s ease; border: 1px solid var(--line-2);
}
.btn-primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: 600; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -10px var(--accent); }
.btn-ghost { color: var(--text); }
.btn-ghost:hover { background: var(--bg-2); border-color: var(--line-2); transform: translateY(-2px); }
.btn svg { width: 16px; height: 16px; }

/* hero portrait */
.hero-portrait { position: relative; }
.hero-portrait .frame {
  position: relative; border-radius: 22px; overflow: hidden; border: 1px solid var(--line-2);
  background: var(--bg-2); aspect-ratio: 1/1.04; box-shadow: var(--shadow);
}
.hero-portrait img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(.15) contrast(1.02); }
.hero-portrait .frame::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, color-mix(in srgb, var(--bg) 88%, transparent));
}
.portrait-tag {
  position: absolute; left: 14px; bottom: 14px; z-index: 2;
  font-family: var(--font-mono); font-size: 12px; color: var(--text);
  background: color-mix(in srgb, var(--bg) 70%, transparent); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  border: 1px solid var(--line); border-radius: 10px; padding: 8px 12px; line-height: 1.5;
}
.portrait-tag span { color: var(--accent); }
.portrait-float {
  position: absolute; top: -16px; right: -14px; z-index: 3;
  font-family: var(--font-mono); font-size: 12px;
  background: var(--accent); color: var(--on-accent); font-weight: 600;
  border-radius: 10px; padding: 8px 12px; transform: rotate(3deg); box-shadow: var(--shadow);
}

/* ---------- Marquee metric bar ---------- */
.metricbar { border-block: 1px solid var(--line); background: var(--bg-1); overflow: hidden; }
.metricbar .track { display: flex; gap: 0; width: max-content; animation: marquee 38s linear infinite; }
.metricbar:hover .track { animation-play-state: paused; }
@keyframes marquee { to { transform: translateX(-50%); } }
.metricbar .cell { display: inline-flex; align-items: baseline; gap: 12px; padding: 22px 38px; border-right: 1px solid var(--line); white-space: nowrap; }
.metricbar .num { font-family: var(--font-display); font-weight: 600; font-size: 28px; color: var(--text); }
.metricbar .num em { color: var(--accent); font-style: normal; }
.metricbar .lbl { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); letter-spacing: .04em; }

/* ---------- Stat row ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--bg-1); padding: 26px 24px; }
.stat .v { font-family: var(--font-display); font-size: clamp(30px, 4vw, 44px); font-weight: 600; letter-spacing: -.02em; }
.stat .v em { color: var(--accent); font-style: normal; }
.stat .k { font-family: var(--font-mono); font-size: 12.5px; color: var(--text-dim); margin-top: 8px; }

/* ---------- About ---------- */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 5vw, 72px); align-items: start; }
.lead { font-size: clamp(19px, 2.3vw, 25px); line-height: 1.5; font-family: var(--font-display); font-weight: 400; letter-spacing: -.01em; }
.lead b { color: var(--accent); font-weight: 600; }
.about-body p { color: var(--text-dim); margin-top: 18px; }
.about-body p b { color: var(--text); font-weight: 600; }
.focus-list { margin-top: 28px; display: grid; gap: 12px; }
.focus-list li { display: flex; gap: 14px; align-items: flex-start; padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-1); transition: border-color .2s, transform .2s; }
.focus-list li:hover { border-color: var(--line-2); transform: translateX(4px); }
.focus-list .tg { font-family: var(--font-mono); font-size: 12px; color: var(--accent); padding-top: 3px; }
.focus-list h4 { font-size: 17px; font-family: var(--font-body); font-weight: 700; }
.focus-list p { color: var(--text-dim); font-size: 14.5px; margin-top: 3px; }

/* ---------- Experience timeline ---------- */
.timeline { display: grid; gap: 0; }
.xp {
  display: grid; grid-template-columns: 220px 1fr; gap: clamp(20px, 4vw, 56px);
  padding: 34px 0; border-top: 1px solid var(--line); position: relative;
}
.xp:last-child { border-bottom: 1px solid var(--line); }
.xp-meta { font-family: var(--font-mono); }
.xp-when { font-size: 13px; color: var(--accent); }
.xp-where { font-size: 14px; color: var(--text-dim); margin-top: 8px; }
.xp-badge { display: inline-block; margin-top: 12px; font-size: 11px; color: var(--text-faint); border: 1px solid var(--line); border-radius: 7px; padding: 3px 8px; }
.xp-role { font-size: clamp(22px, 3vw, 30px); }
.xp-company { color: var(--accent); }
.xp ul { margin-top: 16px; display: grid; gap: 11px; }
.xp ul li { color: var(--text-dim); padding-left: 22px; position: relative; font-size: 15.5px; line-height: 1.55; }
.xp ul li::before { content: "→"; position: absolute; left: 0; color: var(--accent); font-family: var(--font-mono); }
.xp ul li b { color: var(--text); font-weight: 600; }
.xp-tags { margin-top: 18px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag { font-family: var(--font-mono); font-size: 12px; color: var(--text-dim); border: 1px solid var(--line); border-radius: 7px; padding: 5px 10px; background: var(--bg-1); }

/* ---------- Project model cards ---------- */
.proj-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.card {
  position: relative; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--bg-1); overflow: hidden; transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-6px); border-color: var(--line-2); box-shadow: var(--shadow); }
.card-media { position: relative; aspect-ratio: 16/9; overflow: hidden; background: var(--bg-3); border-bottom: 1px solid var(--line); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease, filter .3s; filter: grayscale(.25); }
.card:hover .card-media img { transform: scale(1.05); filter: grayscale(0); }
.card-media.gen { display: grid; place-items: center; position: relative; background:
  radial-gradient(120% 120% at 80% 0%, var(--accent-soft), transparent 55%), var(--bg-3); }
.card-media.gen::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 30% 100%, #000, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 70% at 30% 100%, #000, transparent 75%);
}
.card-media.gen .glyph { font-family: var(--font-mono); font-size: 54px; font-weight: 700; color: var(--accent); opacity: .9; letter-spacing: -.04em; position: relative; }
.card-media.gen .sub { position: absolute; bottom: 14px; left: 16px; font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); }

.card-id { position: absolute; top: 12px; left: 12px; font-family: var(--font-mono); font-size: 11px; color: var(--text); background: color-mix(in srgb, var(--bg) 65%, transparent); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); border: 1px solid var(--line); border-radius: 7px; padding: 4px 9px; }
.card-live { position: absolute; top: 12px; right: 12px; font-family: var(--font-mono); font-size: 11px; font-weight: 600; color: var(--on-accent); background: var(--accent); border-radius: 7px; padding: 4px 9px; display: inline-flex; gap: 6px; align-items: center; }
.card-live .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--on-accent); animation: pulse 1.6s infinite; }
.card-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.card-body h3 { font-size: 22px; display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card-body h3 .arrow { color: var(--text-faint); transition: transform .25s, color .25s; }
.card:hover h3 .arrow { color: var(--accent); transform: translate(3px,-3px); }
.card-desc { color: var(--text-dim); font-size: 15px; margin-top: 10px; flex: 1; }
.card-metrics { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.chip { font-family: var(--font-mono); font-size: 12px; color: var(--accent); background: var(--accent-soft); border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent); border-radius: 7px; padding: 5px 9px; }
.chip.muted { color: var(--text-dim); background: var(--bg-2); border-color: var(--line); }
.card-stack { margin-top: 14px; font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); }

/* ---------- Research ---------- */
.research-grid { display: grid; gap: 16px; }
.paper { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-1); padding: 28px; display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: start; transition: border-color .25s, transform .25s; }
.paper:hover { border-color: var(--line-2); transform: translateX(4px); }
.paper h3 { font-size: 20px; line-height: 1.25; }
.paper p { color: var(--text-dim); font-size: 15px; margin-top: 10px; }
.paper .status { font-family: var(--font-mono); font-size: 11px; color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); border-radius: 999px; padding: 5px 12px; white-space: nowrap; }

/* ---------- Skills ---------- */
.skill-cols { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.skill-card { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-1); padding: 24px; }
.skill-card h4 { font-family: var(--font-mono); font-size: 13px; letter-spacing: .06em; text-transform: uppercase; color: var(--accent); font-weight: 500; margin-bottom: 16px; }
.skill-card ul { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-card li { font-size: 13.5px; color: var(--text-dim); border: 1px solid var(--line); border-radius: 8px; padding: 6px 11px; background: var(--bg-2); transition: all .18s; cursor: default; }
.skill-card li:hover { color: var(--text); border-color: var(--accent); transform: translateY(-2px); }

/* ---------- Achievements ---------- */
.ach-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; }
.ach { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-1); padding: 26px; transition: transform .25s, border-color .25s; }
.ach:hover { transform: translateY(-4px); border-color: var(--line-2); }
.ach .v { font-family: var(--font-display); font-size: clamp(26px,3.4vw,38px); font-weight: 600; letter-spacing: -.02em; }
.ach .v em { color: var(--accent); font-style: normal; }
.ach .t { font-weight: 700; margin-top: 8px; font-size: 16px; }
.ach .d { color: var(--text-dim); font-size: 14px; margin-top: 6px; }

/* ---------- Certs ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px,1fr)); gap: 12px; }
.cert { display: flex; gap: 14px; align-items: center; border: 1px solid var(--line); border-radius: 12px; background: var(--bg-1); padding: 16px 18px; transition: border-color .2s, transform .2s; }
.cert:hover { border-color: var(--accent); transform: translateY(-2px); }
.cert .ic { width: 40px; height: 40px; border-radius: 9px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); font-family: var(--font-mono); font-size: 11px; flex-shrink: 0; border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent); }
.cert .n { font-size: 14.5px; font-weight: 600; line-height: 1.3; }
.cert .o { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-faint); margin-top: 3px; }

/* ---------- Writing ---------- */
.write-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.write { border: 1px solid var(--line); border-radius: var(--radius); background: var(--bg-1); overflow: hidden; transition: transform .25s, border-color .25s; display: flex; flex-direction: column; }
.write:hover { transform: translateY(-5px); border-color: var(--line-2); }
.write .media { aspect-ratio: 16/9; overflow: hidden; background: var(--bg-3); border-bottom: 1px solid var(--line); }
.write .media img { width:100%; height:100%; object-fit: cover; transition: transform .5s; }
.write:hover .media img { transform: scale(1.06); }
.write .body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.write .kind { font-family: var(--font-mono); font-size: 11px; color: var(--accent); }
.write h4 { font-size: 17px; margin-top: 8px; font-family: var(--font-body); font-weight: 700; line-height: 1.35; flex:1; }
.write .meta { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-faint); margin-top: 14px; }

/* ---------- Community ---------- */
.comm { display: grid; grid-template-columns: 200px 1fr; gap: clamp(20px,4vw,56px); padding: 28px 0; border-top: 1px solid var(--line); }
.comm:last-of-type { border-bottom: 1px solid var(--line); }
.comm-meta { font-family: var(--font-mono); font-size: 13px; }
.comm-meta .r { color: var(--accent); }
.comm-meta .w { color: var(--text-dim); margin-top: 6px; }
.comm-body p { color: var(--text-dim); font-size: 15.5px; }
.comm-body h3 { font-size: 22px; }

/* ---------- Contact ---------- */
.contact { text-align: center; }
.contact h2 { font-size: clamp(40px, 8vw, 96px); letter-spacing: -.04em; line-height: .98; }
.contact h2 a { color: var(--accent); text-decoration: none; position: relative; }
.contact h2 a:hover { text-decoration: underline; text-underline-offset: 8px; }
.contact-links { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 40px; }
.contact-links a { font-family: var(--font-mono); font-size: 14px; color: var(--text-dim); border: 1px solid var(--line); border-radius: 999px; padding: 11px 20px; transition: all .2s; }
.contact-links a:hover { color: var(--text); border-color: var(--accent); transform: translateY(-3px); }

/* ---------- Footer ---------- */
.footer { border-top: 1px solid var(--line); padding-block: 40px; }
.footer-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; font-family: var(--font-mono); font-size: 13px; color: var(--text-faint); }
.footer-row a:hover { color: var(--accent); }

/* ---------- Reveal animation ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s cubic-bezier(.2,.6,.2,1), transform .7s cubic-bezier(.2,.6,.2,1); }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-d="1"]{ transition-delay:.08s } .reveal[data-d="2"]{ transition-delay:.16s }
.reveal[data-d="3"]{ transition-delay:.24s } .reveal[data-d="4"]{ transition-delay:.32s }

/* ---------- Writing fallback tile ---------- */
.write .media.gen { display: grid; place-items: center; position: relative; background:
  radial-gradient(120% 120% at 80% 0%, var(--accent-soft), transparent 55%), var(--bg-3); }
.write .media.gen::before {
  content: ""; position: absolute; inset: 0; opacity: .5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(ellipse 70% 70% at 30% 100%, #000, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 70% at 30% 100%, #000, transparent 75%);
}
.write .media.gen .tile-mark { font-family: var(--font-mono); font-size: 13px; color: var(--accent); position: relative; letter-spacing: .04em; }

/* ---------- To-top ---------- */
.totop { position: fixed; right: 22px; bottom: 22px; z-index: 80; opacity: 0; transform: translateY(12px); transition: all .3s; }
.totop.show { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-portrait { max-width: 380px; }
  .about-grid { grid-template-columns: 1fr; }
  .proj-grid, .skill-cols, .ach-grid, .write-grid { grid-template-columns: 1fr 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .xp, .comm { grid-template-columns: 1fr; gap: 14px; }
  .paper { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .menu-toggle { display: grid; }
  .nav.open .nav-links {
    display: flex; flex-direction: column; align-items: stretch;
    position: absolute; top: 100%; left: 0; right: 0; gap: 2px;
    background: var(--bg-1); border-bottom: 1px solid var(--line); padding: 12px var(--pad) 20px;
  }
  .nav.open .nav-links a { padding: 13px 8px; font-size: 15px; }
  .proj-grid, .skill-cols, .ach-grid, .write-grid, .stats { grid-template-columns: 1fr; }
  .metricbar .num { font-size: 22px; }
}