/* ============================================================
   Donovan Zeto — personal site
   Vanilla CSS. No frameworks, no build step.

   Theming: every color is a token on :root. [data-theme="light"]
   redefines the tokens; nothing below the token block hardcodes a
   color, so both themes come from one set of rules.
   ============================================================ */

:root {
  color-scheme: dark;

  /* surfaces */
  --bg:        #07090d;
  --bg-2:      #0b0e14;
  --panel:     #0e1219;
  --panel-2:   #11161f;
  --panel-a:   rgba(14, 18, 25, .60);   /* translucent panel */
  --panel-b:   rgba(11, 14, 20, .55);   /* gradient tail */
  --nav-bg:    rgba(7, 9, 13, .82);
  --nav-solid: rgba(7, 9, 13, .97);

  /* lines */
  --line:      #1c2430;
  --line-2:    #2a3542;
  --grid-line: rgba(255, 255, 255, .028);

  /* text */
  --txt:       #e8edf5;
  --txt-2:     #a4b0c0;
  --txt-3:     #6b7789;

  /* accent */
  --acc:       #00e5a0;
  --acc-hi:    #22f5b5;
  --acc-2:     #5b8cff;
  --acc-ink:   #04150e;                 /* text sitting on accent */
  --acc-glow:  rgba(0, 229, 160, .16);
  --acc-soft:  rgba(0, 229, 160, .07);
  --acc-line:  rgba(0, 229, 160, .22);
  --acc-cast:  rgba(0, 229, 160, .22);  /* accent drop shadow */

  /* depth + texture */
  --shadow:    rgba(0, 0, 0, .50);
  --shadow-sm: rgba(0, 0, 0, .40);
  --noise-op:  .04;

  /* canvas backdrop (rgb triplets, consumed by JS) */
  --canvas-node: 0, 229, 160;
  --canvas-link: 91, 140, 255;
  --canvas-op:   .55;

  --mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Inter, system-ui, sans-serif;

  --max: 1180px;
  --pad: clamp(1.25rem, 5vw, 4rem);
  --r:   14px;

  --ease: cubic-bezier(.22, 1, .36, 1);
}

:root[data-theme="light"] {
  color-scheme: light;

  --bg:        #f7f8fa;
  --bg-2:      #eef1f5;
  --panel:     #ffffff;
  --panel-2:   #f1f4f8;
  --panel-a:   rgba(255, 255, 255, .72);
  --panel-b:   rgba(241, 244, 248, .62);
  --nav-bg:    rgba(247, 248, 250, .84);
  --nav-solid: rgba(247, 248, 250, .98);

  --line:      #e3e7ee;
  --line-2:    #c8d0dc;
  --grid-line: rgba(12, 20, 34, .045);

  --txt:       #0c1119;
  --txt-2:     #46515f;
  --txt-3:     #7a8697;

  /* darker green: 4.5:1+ on white, where #00e5a0 fails badly */
  --acc:       #00996c;
  --acc-hi:    #00b37e;
  --acc-2:     #3355cc;
  --acc-ink:   #ffffff;
  --acc-glow:  rgba(0, 153, 108, .14);
  --acc-soft:  rgba(0, 153, 108, .06);
  --acc-line:  rgba(0, 153, 108, .24);
  --acc-cast:  rgba(0, 153, 108, .26);

  --shadow:    rgba(18, 30, 52, .13);
  --shadow-sm: rgba(18, 30, 52, .09);
  --noise-op:  .022;

  --canvas-node: 0, 153, 108;
  --canvas-link: 51, 85, 204;
  --canvas-op:   .40;
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background .5s var(--ease), color .5s var(--ease);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

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

:focus-visible {
  outline: 2px solid var(--acc);
  outline-offset: 3px;
  border-radius: 4px;
}

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 99px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--txt-3); }

/* ============================================================
   BACKDROP LAYERS
   ============================================================ */

#bg-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: var(--canvas-op);
  pointer-events: none;
  transition: opacity .5s var(--ease);
}

.grid-overlay {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(ellipse 100% 70% at 50% 0%, #000 20%, transparent 78%);
}

/* cursor-tracked ambient wash */
.spotlight {
  position: fixed;
  z-index: 0;
  width: 620px; height: 620px;
  left: 0; top: 0;
  margin: -310px 0 0 -310px;
  border-radius: 50%;
  pointer-events: none;
  background: radial-gradient(circle, var(--acc-glow), transparent 62%);
  opacity: 0;
  transition: opacity .6s var(--ease);
  will-change: transform;
}
.spotlight.is-on { opacity: 1; }

.noise {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: var(--noise-op);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.scan-progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--acc), var(--acc-2));
  z-index: 200;
  box-shadow: 0 0 12px var(--acc-glow);
}

main, .nav, .footer, .marquee { position: relative; z-index: 2; }

/* ============================================================
   CUSTOM CURSOR
   ============================================================ */

.cursor-dot, .cursor-ring {
  position: fixed;
  top: 0; left: 0;
  z-index: 300;
  pointer-events: none;
  border-radius: 50%;
  opacity: 0;
  transition: opacity .3s var(--ease);
  will-change: transform;
}
.cursor-dot {
  width: 6px; height: 6px;
  margin: -3px 0 0 -3px;
  background: var(--acc);
}
.cursor-ring {
  width: 34px; height: 34px;
  margin: -17px 0 0 -17px;
  border: 1px solid var(--acc);
  transition: opacity .3s var(--ease), width .3s var(--ease), height .3s var(--ease),
              margin .3s var(--ease), background .3s var(--ease), border-color .3s var(--ease);
}
.cursor-dot.is-on, .cursor-ring.is-on { opacity: 1; }

/* grows over anything clickable */
.cursor-ring.is-hot {
  width: 56px; height: 56px;
  margin: -28px 0 0 -28px;
  background: var(--acc-soft);
  border-color: var(--acc);
}
.cursor-dot.is-hot { opacity: 0; }

/* ============================================================
   NAV
   ============================================================ */

.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.1rem var(--pad);
  transition: background .35s var(--ease), backdrop-filter .35s var(--ease),
              border-color .35s var(--ease), padding .35s var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.is-stuck {
  background: var(--nav-bg);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--line);
  padding-top: .75rem;
  padding-bottom: .75rem;
}

.nav__brand { display: flex; align-items: center; gap: .7rem; }

.nav__mark {
  font-family: var(--mono);
  font-weight: 700;
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--acc);
  border: 1px solid var(--acc);
  border-radius: 7px;
  padding: .3rem .45rem;
  line-height: 1;
  box-shadow: inset 0 0 18px var(--acc-glow);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.nav__brand:hover .nav__mark {
  transform: rotate(-8deg) scale(1.08);
  box-shadow: inset 0 0 24px var(--acc-glow), 0 0 20px var(--acc-glow);
}

.nav__brandtext {
  font-family: var(--mono);
  font-size: .9rem;
  letter-spacing: -.01em;
  color: var(--txt);
}
.accent { color: var(--acc); }

.nav__links {
  display: flex;
  gap: 1.6rem;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .04em;
  color: var(--txt-3);
}

.nav__links a { position: relative; transition: color .25s var(--ease); padding: .25rem 0; }
.nav__links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  height: 1px; width: 0;
  background: var(--acc);
  transition: width .3s var(--ease);
}
.nav__links a:hover, .nav__links a.is-active { color: var(--txt); }
.nav__links a:hover::after, .nav__links a.is-active::after { width: 100%; }

.nav__right { display: flex; align-items: center; gap: .7rem; }

.nav__cta {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .03em;
  border: 1px solid var(--line-2);
  border-radius: 99px;
  padding: .5rem 1.1rem;
  color: var(--txt-2);
  transition: color .28s var(--ease), border-color .28s var(--ease), box-shadow .28s var(--ease);
  white-space: nowrap;
}
.nav__cta:hover {
  color: var(--acc);
  border-color: var(--acc);
  box-shadow: 0 0 0 3px var(--acc-glow);
}

/* ---- theme toggle ---- */
.theme-toggle {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  padding: 0;
  border: 1px solid var(--line-2);
  border-radius: 99px;
  background: var(--panel-a);
  color: var(--txt-2);
  cursor: pointer;
  overflow: hidden;
  position: relative;
  transition: color .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.theme-toggle:hover {
  color: var(--acc);
  border-color: var(--acc);
  box-shadow: 0 0 0 3px var(--acc-glow);
}
.theme-toggle svg {
  grid-area: 1 / 1;
  width: 16px; height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform .5s var(--ease), opacity .35s var(--ease);
}
/* dark theme → offer the sun; light theme → offer the moon */
.theme-toggle .i-moon { opacity: 0; transform: rotate(-70deg) scale(.5); }
:root[data-theme="light"] .theme-toggle .i-sun  { opacity: 0; transform: rotate(70deg) scale(.5); }
:root[data-theme="light"] .theme-toggle .i-moon { opacity: 1; transform: none; }

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-2);
  border-radius: 9px;
  padding: .6rem .55rem;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}
.nav__toggle span {
  display: block;
  width: 20px; height: 1.5px;
  background: var(--txt);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(3.25px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.25px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */

.hero {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 8rem var(--pad) 4rem;
  position: relative;
}

.hero__inner {
  max-width: var(--max);
  margin: 0 auto;
  width: 100%;
  will-change: transform, opacity;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--txt-3);
  border: 1px solid var(--line);
  background: var(--panel-a);
  border-radius: 99px;
  padding: .42rem .95rem;
  margin: 0 0 2rem;
}
.eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 99px;
  background: var(--acc);
  box-shadow: 0 0 0 3px var(--acc-glow);
}

.hero__title {
  margin: 0;
  font-size: clamp(3.4rem, 13.5vw, 11rem);
  line-height: .87;
  letter-spacing: -.045em;
  font-weight: 700;
}
.hero__title .line { display: block; }
.hero__title .outline {
  color: transparent;
  -webkit-text-stroke: 1.4px var(--txt-3);
  transition: -webkit-text-stroke-color .5s var(--ease);
}
.hero__title:hover .outline { -webkit-text-stroke-color: var(--acc); }

/* per-letter entrance */
.hero__title .ch {
  display: inline-block;
  opacity: 0;
  transform: translateY(.42em) rotate(4deg);
  animation: chIn .85s var(--ease) forwards;
  animation-delay: calc(var(--i) * 38ms + var(--base, 0ms));
}
@keyframes chIn {
  to { opacity: 1; transform: none; }
}

.hero__role {
  font-family: var(--mono);
  font-size: clamp(.9rem, 2.2vw, 1.15rem);
  color: var(--acc);
  margin: 1.6rem 0 0;
  letter-spacing: .01em;
  min-height: 1.6em;
}
.caret {
  display: inline-block;
  width: 9px; height: 1.05em;
  background: var(--acc);
  vertical-align: text-bottom;
  margin-left: 3px;
  animation: blink 1.05s steps(1) infinite;
}
@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

.hero__blurb {
  max-width: 58ch;
  color: var(--txt-2);
  font-size: clamp(1rem, 1.5vw, 1.1rem);
  margin: 1.7rem 0 0;
}
.hero__blurb strong { color: var(--txt); font-weight: 600; }

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
  margin: 2.4rem 0 0;
}

.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .01em;
  padding: .85rem 1.4rem;
  border-radius: 99px;
  border: 1px solid var(--line-2);
  color: var(--txt-2);
  background: var(--panel-a);
  cursor: pointer;
  transition: color .3s var(--ease), border-color .3s var(--ease),
              transform .3s var(--ease), box-shadow .3s var(--ease);
}
.btn > * { position: relative; z-index: 1; }
.btn svg {
  width: 16px; height: 16px;
  fill: none; stroke: currentColor;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
  transition: transform .3s var(--ease);
}
.btn:hover { color: var(--txt); border-color: var(--txt-3); }
.btn:hover svg { transform: translateX(4px); }

.btn--primary {
  background: var(--acc);
  border-color: var(--acc);
  color: var(--acc-ink);
  font-weight: 700;
  box-shadow: 0 8px 32px var(--acc-cast);
}
.btn--primary:hover {
  background: var(--acc-hi);
  border-color: var(--acc-hi);
  color: var(--acc-ink);
  box-shadow: 0 12px 40px var(--acc-cast);
}

/* click ripple */
.ripple {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  background: currentColor;
  opacity: .28;
  pointer-events: none;
  z-index: 0;
  animation: ripple .62s var(--ease) forwards;
}
@keyframes ripple {
  to { transform: scale(2.6); opacity: 0; }
}

.hero__meta {
  list-style: none;
  margin: 3.4rem 0 0;
  padding: 1.4rem 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.2rem 2rem;
}
.hero__meta li { display: flex; flex-direction: column; gap: .25rem; }
.hero__meta .k {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--txt-3);
}
.hero__meta .v {
  font-size: .95rem;
  color: var(--txt);
  display: inline-flex;
  align-items: center;
  gap: .5rem;
}

.pulse {
  width: 7px; height: 7px;
  border-radius: 99px;
  background: var(--acc);
  position: relative;
  flex: none;
}
.pulse::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 99px;
  background: var(--acc);
  animation: pulse 2s ease-out infinite;
}
@keyframes pulse {
  0% { transform: scale(1); opacity: .7; }
  100% { transform: scale(3.2); opacity: 0; }
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .6rem;
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--txt-3);
  transition: color .3s var(--ease);
}
.hero__scroll:hover { color: var(--acc); }
.hero__scrollline {
  width: 1px; height: 46px;
  background: linear-gradient(to bottom, transparent, var(--line-2));
  position: relative;
  overflow: hidden;
}
.hero__scrollline::after {
  content: '';
  position: absolute;
  top: -46px; left: 0;
  width: 1px; height: 46px;
  background: linear-gradient(to bottom, transparent, var(--acc));
  animation: scrolldrop 2.2s ease-in-out infinite;
}
@keyframes scrolldrop {
  0% { top: -46px; } 100% { top: 46px; }
}

/* ============================================================
   MARQUEE  (JS drives the offset so it reacts to scroll velocity)
   ============================================================ */

.marquee {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--panel-b);
  overflow: hidden;
  padding: .95rem 0;
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.marquee__track {
  display: flex;
  align-items: center;
  gap: 2rem;
  width: max-content;
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .05em;
  color: var(--txt-2);
  white-space: nowrap;
  will-change: transform;
}
.marquee__track i { color: var(--acc); font-style: normal; font-size: .55rem; opacity: .8; }

/* CSS-only fallback when JS hasn't taken over */
.no-js-marquee .marquee__track { animation: marquee 48s linear infinite; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ============================================================
   SECTION SHELL
   ============================================================ */

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(5rem, 11vw, 9rem) var(--pad);
}

.section__head {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-bottom: 1.1rem;
}
.section__num {
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--acc);
  letter-spacing: .1em;
}
.section__title {
  margin: 0;
  font-size: clamp(1.9rem, 5vw, 3rem);
  letter-spacing: -.03em;
  font-weight: 700;
  white-space: nowrap;
}
.section__rule {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--line-2), transparent);
  transform-origin: left;
  transform: scaleX(0);
  transition: transform 1.1s var(--ease) .1s;
}
.section__head.is-in .section__rule { transform: scaleX(1); }

.section__sub {
  color: var(--txt-3);
  font-family: var(--mono);
  font-size: .82rem;
  margin: 0 0 3rem;
}

/* ============================================================
   ABOUT
   ============================================================ */

.about {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(0, .85fr);
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: 2.5rem;
}
.about > * { min-width: 0; }

.about__body p { color: var(--txt-2); margin: 0 0 1.15rem; }
.about__body strong { color: var(--txt); font-weight: 600; }
.about__body .lede {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  line-height: 1.55;
  color: var(--txt);
  letter-spacing: -.01em;
  margin-bottom: 1.4rem;
}

/* The terminal stays dark in both themes — it reads as a device, not a panel. */
.terminal {
  --t-bg:    #0d1117;
  --t-bar:   #161b23;
  --t-line:  #232b36;
  --t-txt:   #a9b4c4;
  --t-dim:   #6b7789;
  --t-green: #00e5a0;
  --t-blue:  #5b8cff;

  margin-top: 2rem;
  border: 1px solid var(--t-line);
  border-radius: var(--r);
  background: var(--t-bg);
  overflow: hidden;
  min-width: 0;
  max-width: 100%;
  box-shadow: 0 24px 60px var(--shadow);
}
.terminal__bar {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .7rem .9rem;
  background: var(--t-bar);
  border-bottom: 1px solid var(--t-line);
}
.terminal__bar i { width: 10px; height: 10px; border-radius: 99px; }
.terminal__bar i:nth-child(1) { background: #ff5f56; }
.terminal__bar i:nth-child(2) { background: #ffbd2e; }
.terminal__bar i:nth-child(3) { background: #27c93f; }
.terminal__bar span {
  margin-left: auto;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--t-dim);
}
.terminal__body {
  margin: 0;
  padding: 1.1rem 1.15rem;
  font-family: var(--mono);
  font-size: .78rem;
  line-height: 1.85;
  color: var(--t-txt);
  overflow-x: auto;
  white-space: pre;
}
.terminal__body .c-p { color: var(--t-green); }
.terminal__body .c-d { color: var(--t-blue); }
.terminal__body .c-o { color: var(--t-dim); }
.terminal__body .blink { animation: blink 1.05s steps(1) infinite; color: var(--t-green); }

.about__side { display: flex; flex-direction: column; gap: 1rem; }

.statcard {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(160deg, var(--panel), var(--panel-b));
  padding: 1.3rem 1.35rem;
  transition: border-color .35s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}
.statcard:hover {
  border-color: var(--acc);
  transform: translateY(-3px);
  box-shadow: 0 14px 34px var(--shadow-sm);
}
.statcard__n {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 700;
  color: var(--acc);
  line-height: 1;
  letter-spacing: -.03em;
}
.statcard__l {
  display: block;
  margin-top: .6rem;
  font-size: .8rem;
  line-height: 1.5;
  color: var(--txt-3);
}

/* ============================================================
   TIMELINE
   ============================================================ */

.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.1rem;
  position: relative;
}
/* track */
.timeline::before {
  content: '';
  position: absolute;
  left: 6px; top: 8px; bottom: 8px;
  width: 1px;
  background: var(--line-2);
}
/* scroll-driven fill */
.timeline::after {
  content: '';
  position: absolute;
  left: 6px; top: 8px;
  width: 1px;
  height: var(--fill, 0%);
  max-height: calc(100% - 16px);
  background: linear-gradient(to bottom, var(--acc), var(--acc-2));
  box-shadow: 0 0 10px var(--acc-glow);
}

.tl { position: relative; padding-bottom: 1.6rem; }

.tl__marker {
  position: absolute;
  left: -2.1rem; top: 1.9rem;
  width: 13px; height: 13px;
  display: grid;
  place-items: center;
}
.tl__marker span {
  width: 9px; height: 9px;
  border-radius: 99px;
  background: var(--bg);
  border: 2px solid var(--acc);
  box-shadow: 0 0 0 4px var(--bg), 0 0 14px var(--acc-glow);
  transition: background .3s var(--ease), transform .3s var(--ease);
}
.tl--alt .tl__marker span { border-color: var(--line-2); box-shadow: 0 0 0 4px var(--bg); }
.tl:hover .tl__marker span { background: var(--acc); transform: scale(1.2); }

.tl__card {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(150deg, var(--panel) 0%, var(--panel-b) 100%);
  padding: 1.6rem clamp(1.1rem, 2.5vw, 1.9rem);
  transition: border-color .35s var(--ease), transform .35s var(--ease), box-shadow .35s var(--ease);
}
.tl__card:hover {
  border-color: var(--line-2);
  transform: translateX(4px);
  box-shadow: -6px 0 0 -3px var(--acc), 0 20px 50px var(--shadow-sm);
}

.tl__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
}
.tl__role {
  margin: 0;
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  letter-spacing: -.02em;
  font-weight: 600;
}
.tl__org {
  margin: .2rem 0 0;
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--acc);
}
.tl__loc { color: var(--txt-3); }

/* org site links */
.tl__org a {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  border-bottom: 1px solid var(--acc-line);
  padding-bottom: 1px;
  transition: border-color .25s var(--ease);
}
.tl__org a svg {
  width: 11px; height: 11px;
  fill: none; stroke: currentColor;
  stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round;
  opacity: .65;
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}
.tl__org a:hover { border-bottom-color: var(--acc); }
.tl__org a:hover svg { transform: translate(2px, -2px); opacity: 1; }

.tl__when { display: flex; flex-direction: column; align-items: flex-end; gap: .4rem; }
.tl__dates {
  font-family: var(--mono);
  font-size: .74rem;
  color: var(--txt-3);
  letter-spacing: .04em;
  white-space: nowrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-family: var(--mono);
  font-size: .66rem;
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: .22rem .6rem;
  border-radius: 99px;
  border: 1px solid var(--line-2);
  color: var(--txt-3);
}
.badge--live { color: var(--acc); border-color: var(--acc-line); background: var(--acc-soft); }

.tl__proj { padding: 1rem 0 0; border-top: 1px dashed var(--line); margin-top: 1rem; }
.tl__proj:first-of-type { border-top: 0; margin-top: 0; padding-top: 0; }
.tl__proj h4 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -.01em;
}
.tl__tech {
  margin: .2rem 0 .7rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--acc-2);
  letter-spacing: .03em;
}

.tl__proj ul, .tl__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: .55rem;
}
.tl__proj li, .tl__list li {
  position: relative;
  padding-left: 1.2rem;
  color: var(--txt-2);
  font-size: .93rem;
  line-height: 1.6;
}
.tl__proj li::before, .tl__list li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--acc);
  font-size: .85rem;
}
.tl__proj strong, .tl__list strong { color: var(--txt); font-weight: 600; }

.tl__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin-top: 1.2rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line);
}
.tl__tags span {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .03em;
  color: var(--txt-3);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .22rem .55rem;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.tl__card:hover .tl__tags span { border-color: var(--line-2); color: var(--txt-2); }

/* ============================================================
   CARDS / WORK
   ============================================================ */

/* 380px floor keeps this at 2 columns on desktop, so 4 cards land as a
   balanced 2x2 instead of 3 + 1 orphan. min() stops narrow-screen overflow. */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 380px), 1fr));
  gap: 1.1rem;
  margin-top: 2.5rem;
  perspective: 1400px;
}

.card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(155deg, var(--panel), var(--panel-b));
  padding: 1.7rem clamp(1.2rem, 2.5vw, 1.7rem);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform-style: preserve-3d;
  transform:
    translateY(var(--lift, 0px))
    rotateX(var(--rx, 0deg))
    rotateY(var(--ry, 0deg));
  transition: border-color .35s var(--ease), transform .45s var(--ease), box-shadow .35s var(--ease);
}
.card:hover {
  border-color: var(--line-2);
  --lift: -5px;
  box-shadow: 0 26px 60px var(--shadow);
}
/* while the pointer is actually tracking, follow it instantly */
.card.is-tilting { transition: border-color .35s var(--ease), box-shadow .35s var(--ease); }

.card__glow {
  position: absolute;
  width: 340px; height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--acc-glow), transparent 65%);
  opacity: 0;
  transform: translate(-50%, -50%);
  transition: opacity .4s var(--ease);
  pointer-events: none;
  left: var(--mx, 50%);
  top: var(--my, 50%);
}
.card:hover .card__glow { opacity: 1; }

.card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  position: relative;
}
.card__idx {
  font-family: var(--mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--line-2);
  letter-spacing: -.02em;
  transition: color .3s var(--ease);
}
.card:hover .card__idx { color: var(--acc); }
.card__kind {
  font-family: var(--mono);
  font-size: .64rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--txt-3);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: .22rem .65rem;
}

.card__title {
  margin: 0 0 .8rem;
  font-size: 1.25rem;
  letter-spacing: -.02em;
  font-weight: 600;
  position: relative;
}
.card__desc {
  margin: 0;
  color: var(--txt-2);
  font-size: .93rem;
  position: relative;
}
.card__desc strong { color: var(--txt); font-weight: 600; }

.card__points {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: .45rem;
  position: relative;
}
.card__points li {
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--txt-3);
  padding-left: 1.1rem;
  position: relative;
}
.card__points li::before {
  content: '›';
  position: absolute; left: 0;
  color: var(--acc);
  font-weight: 700;
}

.card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: .4rem;
  margin: 1.4rem 0 0;
  position: relative;
}
.card__tags span {
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--acc);
  background: var(--acc-soft);
  border: 1px solid var(--acc-line);
  border-radius: 6px;
  padding: .2rem .55rem;
}

.card__foot {
  margin-top: auto;
  padding-top: 1.3rem;
  font-family: var(--mono);
  font-size: .7rem;
  color: var(--txt-3);
  letter-spacing: .03em;
  position: relative;
}
.card__foot a {
  color: var(--txt-2);
  border-bottom: 1px solid var(--line-2);
  padding-bottom: 1px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.card__foot a:hover { color: var(--acc); border-bottom-color: var(--acc); }

/* ============================================================
   STACK + EDUCATION
   ============================================================ */

.stack {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.1rem;
  margin-top: 2.5rem;
}
.stack__col {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(155deg, var(--panel), var(--panel-b));
  padding: 1.5rem;
}
.stack__h {
  margin: 0 0 1.1rem;
  font-size: .82rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--txt-2);
  display: flex;
  align-items: center;
  gap: .55rem;
}
.stack__h .idx { color: var(--acc); }

.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .45rem; }
.chips li {
  position: relative;
  overflow: hidden;
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--txt-2);
  border: 1px solid var(--line);
  background: var(--panel-a);
  border-radius: 7px;
  padding: .35rem .7rem;
  transition: color .25s var(--ease), border-color .25s var(--ease),
              transform .25s var(--ease), box-shadow .25s var(--ease);
  cursor: default;
}
/* sheen sweep */
.chips li::after {
  content: '';
  position: absolute;
  inset: 0;
  transform: translateX(-120%) skewX(-18deg);
  background: linear-gradient(90deg, transparent, var(--acc-glow), transparent);
  transition: transform .6s var(--ease);
}
.chips li:hover {
  color: var(--acc);
  border-color: var(--acc);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px var(--acc-glow);
}
.chips li:hover::after { transform: translateX(120%) skewX(-18deg); }
.chips--sm li { font-size: .72rem; padding: .28rem .6rem; }

.edu {
  margin-top: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(120deg, var(--acc-soft), var(--panel) 40%);
  padding: 1.8rem clamp(1.2rem, 3vw, 2rem);
  display: grid;
  grid-template-columns: minmax(240px, .8fr) 1.2fr;
  gap: 1.8rem;
  align-items: start;
}
.edu__main h3 {
  margin: 0;
  font-size: clamp(1.2rem, 2.6vw, 1.6rem);
  letter-spacing: -.02em;
}
.edu__deg { margin: .3rem 0 0; color: var(--acc); font-family: var(--mono); font-size: .85rem; }
.edu__meta { margin: .5rem 0 0; color: var(--txt-3); font-family: var(--mono); font-size: .76rem; }
.edu__label {
  display: block;
  font-family: var(--mono);
  font-size: .68rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--txt-3);
  margin-bottom: .8rem;
}

/* ============================================================
   CONTACT
   ============================================================ */

.section--contact { padding-bottom: clamp(4rem, 8vw, 7rem); }

.contact { margin-top: 3rem; }
.contact__big {
  margin: 0;
  font-size: clamp(2.6rem, 9vw, 6rem);
  line-height: .95;
  letter-spacing: -.045em;
  font-weight: 700;
}
.contact__big .outline {
  color: transparent;
  -webkit-text-stroke: 1.3px var(--acc);
}
.contact__sub {
  max-width: 54ch;
  margin: 1.6rem 0 0;
  color: var(--txt-2);
  font-size: clamp(1rem, 1.6vw, 1.08rem);
}

.contact__links {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
}
.clink {
  position: relative;
  display: grid;
  grid-template-columns: 130px 1fr 24px;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem .5rem;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  transition: padding .35s var(--ease);
}
/* wipe-in background */
.clink::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--panel-a);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .45s var(--ease);
}
.clink:hover::before { transform: scaleX(1); }
.clink > * { position: relative; z-index: 1; }
.clink:hover { padding-left: 1.4rem; }
.clink__k {
  font-family: var(--mono);
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--txt-3);
}
.clink__v {
  font-size: clamp(1.05rem, 2.6vw, 1.5rem);
  letter-spacing: -.02em;
  color: var(--txt);
  transition: color .3s var(--ease);
  word-break: break-word;
}
.clink:hover .clink__v { color: var(--acc); }
.clink svg {
  width: 20px; height: 20px;
  fill: none; stroke: var(--txt-3);
  stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
  transition: transform .3s var(--ease), stroke .3s var(--ease);
}
.clink:hover svg { stroke: var(--acc); transform: translate(3px, -3px); }

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  border-top: 1px solid var(--line);
  padding: 1.6rem var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--txt-3);
  background: var(--nav-bg);
}
.footer__top { transition: color .3s var(--ease); }
.footer__top:hover { color: var(--acc); }

/* ============================================================
   REVEAL
   ============================================================ */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .8s var(--ease) var(--d, 0s), transform .8s var(--ease) var(--d, 0s);
  will-change: opacity, transform;
}
.reveal.is-in { opacity: 1; transform: none; }

/* ============================================================
   THEME SWITCH TRANSITION (View Transitions API, where supported)
   ============================================================ */

::view-transition-old(root),
::view-transition-new(root) {
  animation: none;
  mix-blend-mode: normal;
}
::view-transition-old(root) { z-index: 1; }
::view-transition-new(root) { z-index: 2; }

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 940px) {
  .about { grid-template-columns: minmax(0, 1fr); }
  .about__side { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }
  .edu { grid-template-columns: 1fr; }
}

@media (max-width: 800px) {
  .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .nav__links {
    position: fixed;
    inset: 0 0 auto 0;
    top: 100%;
    flex-direction: column;
    gap: 0;
    background: var(--nav-solid);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--line);
    padding: 1rem var(--pad) 1.6rem;
    font-size: .95rem;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .3s var(--ease), transform .3s var(--ease);
  }
  .nav__links.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__links a { padding: .85rem 0; border-bottom: 1px solid var(--line); }
  .nav__links a::after { display: none; }

  .hero { padding-top: 7rem; }
  .hero__scroll { display: none; }
  .clink { grid-template-columns: 1fr 20px; }
  .clink__k { grid-column: 1 / -1; margin-bottom: -.5rem; }
  .tl__when { align-items: flex-start; flex-direction: row-reverse; justify-content: flex-end; }
}

@media (max-width: 520px) {
  .timeline { padding-left: 1.5rem; }
  .tl__marker { left: -1.5rem; }
}

/* pointer-driven flourishes are desktop-only */
@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring, .spotlight { display: none; }
}

/* ============================================================
   MOTION / PRINT
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero__title .ch { opacity: 1; transform: none; animation: none; }
  .section__head .section__rule { transform: scaleX(1); }
  #bg-canvas, .cursor-dot, .cursor-ring, .spotlight { display: none; }
}

@media print {
  #bg-canvas, .grid-overlay, .noise, .scan-progress, .nav, .marquee,
  .hero__scroll, .cursor-dot, .cursor-ring, .spotlight { display: none !important; }
  body { background: #fff; color: #111; }
  .reveal { opacity: 1 !important; transform: none !important; }
  .hero__title .ch { opacity: 1 !important; transform: none !important; animation: none !important; }
  .section__rule { transform: scaleX(1) !important; }
  .tl__card, .card, .stack__col, .edu, .terminal {
    border-color: #ccc; background: #fff; page-break-inside: avoid;
  }
  .terminal__body, .terminal__bar { background: #fff; color: #333; }
  .card__title, .tl__role, .section__title, .hero__title { color: #111; }
  .hero__title .outline { -webkit-text-stroke: 0; color: #555; }
}