/* ═══════════════════════════════════════════════════════════
   Sanjay Utchula · Portfolio · Design system
   dark-first · Space Grotesk / Inter / JetBrains Mono
   ═══════════════════════════════════════════════════════════ */

:root {
  /* ─── palette · DARK (default) ─── */
  --bg:            #0A0A0B;
  --bg-1:          #0E0E10;
  --bg-2:          #131316;
  --bg-elev:       #17171B;
  --line:          rgba(255,255,255,0.08);
  --line-strong:   rgba(255,255,255,0.16);
  --hair:          rgba(255,255,255,0.04);

  --fg:            #F2F1EA;
  --fg-2:          #C7C6BE;
  --fg-3:          #8A8983;
  --fg-4:          #57565F;

  /* signal accents — restrained */
  --accent-graph:  #7CD9C0;   /* Neo4j / graph */
  --accent-warm:   #E5B25D;   /* craft / award */
  --accent-agent:  #A897F5;   /* AgentGuard */
  --accent-java:   #F0836C;   /* Java systems */
  --accent-hero:   #EDE7DB;   /* hero text warmth */

  /* canvas-safe rgb triplets (for rgba() in JS) */
  --rgb-graph:     124, 217, 192;
  --rgb-warm:      229, 178, 93;
  --rgb-agent:     168, 151, 245;
  --rgb-fg:        242, 241, 234;
  --rgb-fg-3:      138, 137, 131;
  --rgb-bg:        10, 10, 11;
  --canvas-edge:   180, 200, 195;   /* rgb triplet for edge lines */

  /* icon fills that need per-theme override (baked-color icons) */
  --flask-fg:       #F2F1EA;
  --sklearn-white:  #131316;
  --py-blue:        #3776AB;
  --py-yellow:      #FFD43B;
  --html-orange:    #E34F26;
  --css-blue:       #1572B6;

  /* type stacks */
  --font-display:  'Space Grotesk', ui-sans-serif, system-ui, sans-serif;
  --font-body:     'Inter', ui-sans-serif, system-ui, sans-serif;
  --font-mono:     'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-italic:   'Instrument Serif', 'Times New Roman', serif;

  /* rhythm */
  --pad:           clamp(1.25rem, 4vw, 3rem);
  --pad-lg:        clamp(2rem, 7vw, 6rem);
  --maxw:          1440px;

  /* motion */
  --e-out:         cubic-bezier(.16,1,.3,1);
  --e-in-out:      cubic-bezier(.7,0,.15,1);
}

/* ─── palette · LIGHT (precision engineering workspace) ─── */
:root[data-theme="light"] {
  /* Cool neutral canvas — technical UI feel, not paper */
  --bg:            #F5F7FA;   /* slate-50-ish, cool */
  --bg-1:          #FFFFFF;   /* elevated pure white — UI panels */
  --bg-2:          #EEF2F7;   /* section elev, cool */
  --bg-elev:       #E4EAF1;

  --line:          rgba(15, 23, 42, 0.09);
  --line-strong:   rgba(15, 23, 42, 0.18);
  --hair:          rgba(15, 23, 42, 0.05);

  --fg:            #0F172A;   /* slate-900 */
  --fg-2:          #334155;   /* slate-700 */
  --fg-3:          #64748B;   /* slate-500 — mono metadata */
  --fg-4:          #94A3B8;   /* slate-400 */

  /* Stronger, more saturated accents against the brighter canvas */
  --accent-graph:  #0891B2;   /* cyan-600 */
  --accent-warm:   #B45309;   /* amber-700 */
  --accent-agent:  #6D28D9;   /* violet-700 */
  --accent-java:   #B91C1C;
  --accent-hero:   #0F172A;

  --rgb-graph:     8, 145, 178;
  --rgb-warm:      180, 83, 9;
  --rgb-agent:     109, 40, 217;
  --rgb-fg:        15, 23, 42;
  --rgb-fg-3:      100, 116, 139;
  --rgb-bg:        245, 247, 250;
  --canvas-edge:   100, 116, 139;   /* cool slate for graph */
}

/* Smooth theme transition — brief and only on toggle.
   Only body-level bg/fg get the transition to avoid stuck-value artifacts on
   accent-colored borders (they snap, which reads as a crisp swap rather than a smear). */
html.is-theme-shifting body {
  transition: background-color .3s ease, color .3s ease;
}

/* ─── reset ─── */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; background: none; border: 0; color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; }
p { margin: 0; }

::selection { background: var(--accent-graph); color: #041614; }

/* ─── helpers ─── */
.mono { font-family: var(--font-mono); font-weight: 400; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.72rem; color: var(--fg-3); }
.italic { font-family: var(--font-italic); font-style: italic; font-weight: 400; letter-spacing: -0.01em; }
.chip {
  display: inline-flex; align-items: center; gap: 0.4em;
  padding: 0.15em 0.55em;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 0.85em;
  color: var(--fg);
  background: rgba(var(--rgb-fg), 0.03);
  white-space: nowrap;
}
.chip--sm { padding: 0.05em 0.5em; font-size: 0.75em; }
.highlight { color: var(--fg); font-family: var(--font-italic); font-style: italic; font-size: 1.15em; }

/* ─── grain overlay ─── */
.grain {
  position: fixed; inset: 0; pointer-events: none; z-index: 9999;
  opacity: 0.045; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}
[data-theme="light"] .grain { opacity: 0.09; mix-blend-mode: multiply; }

/* ─── custom cursor (desktop only) ─── */
.cursor { position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9998; mix-blend-mode: difference; }
.cursor__dot { position: fixed; width: 6px; height: 6px; border-radius: 50%; background: #fff; transform: translate(-50%,-50%); transition: transform .18s var(--e-out), width .2s var(--e-out), height .2s var(--e-out); }
.cursor__ring { position: fixed; width: 32px; height: 32px; border-radius: 50%; border: 1px solid rgba(var(--rgb-fg), .4); transform: translate(-50%,-50%); transition: transform .3s var(--e-out), width .3s var(--e-out), height .3s var(--e-out), border-color .2s, background .3s; }
.cursor__label {
  position: fixed;
  padding: 0.3em 0.7em;
  border-radius: 999px;
  background: var(--fg);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transform: translate(-50%, calc(-50% + 32px)) scale(0.6);
  opacity: 0;
  transition: opacity .2s, transform .3s var(--e-out);
  white-space: nowrap;
  will-change: transform, opacity;
}
.cursor.is-label .cursor__label { opacity: 1; transform: translate(-50%, calc(-50% + 32px)) scale(1); }
.cursor.is-hover .cursor__ring { width: 60px; height: 60px; border-color: var(--accent-graph); }
.cursor.is-label .cursor__ring { width: 90px; height: 90px; border-color: var(--fg); background: rgba(var(--rgb-fg), 0.06); }
.cursor.is-hover .cursor__dot { width: 3px; height: 3px; }
.cursor.is-label .cursor__dot { width: 0; height: 0; }
@media (pointer: coarse), (hover: none) {
  .cursor { display: none; }
}

/* Position the cursor label under the ring (matches dot coordinates) */
.cursor__label {
  /* JS sets left/top via cursor container's ring position; keep label anchored to the dot */
}

/* ─── section title word masks (for GSAP reveals) ─── */
.wmask { display: inline-block; overflow: hidden; vertical-align: baseline; line-height: inherit; padding-bottom: 0.05em; }
.wtext { display: inline-block; will-change: transform; }

/* ═══════════════════════════════════════════════════════════
   NAV
   ═══════════════════════════════════════════════════════════ */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
  padding: 1.1rem var(--pad);
  background: linear-gradient(to bottom, rgba(var(--rgb-bg),0.85), rgba(var(--rgb-bg),0));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background .3s, backdrop-filter .3s, border-color .3s;
}
.nav.is-scrolled { background: rgba(var(--rgb-bg),0.72); border-bottom: 1px solid var(--line); }

.nav__brand { display: inline-flex; align-items: center; gap: 0.6rem; color: var(--fg); font-family: var(--font-display); font-weight: 500; letter-spacing: -0.02em; }
.nav__mark  { width: 30px; height: 30px; color: var(--fg); overflow: visible; }
.nav__mark-line {
  stroke-dasharray: 62;
  stroke-dashoffset: 0;
  filter: drop-shadow(0 0 4px color-mix(in srgb, currentColor 30%, transparent));
  animation: navmark-trace 8s ease-in-out infinite;
}
@keyframes navmark-trace {
  0%, 100% { stroke-dashoffset: 0; }
  50%      { stroke-dashoffset: 62; }
}
@media (prefers-reduced-motion: reduce) {
  .nav__mark-line { animation: none; }
}
.nav__wordmark { font-size: 0.98rem; }
.nav__wordmark-dot { color: var(--accent-graph); }

.nav__links { display: flex; align-items: center; gap: 2rem; }
.nav__links a { position: relative; color: var(--fg-2); font-size: 0.9rem; padding: 0.3rem 0; transition: color .25s; }
.nav__links a::before {
  content: ''; position: absolute; left: 50%; top: 50%; width: 4px; height: 4px;
  border-radius: 50%; background: var(--accent-graph);
  transform: translate(-50%, 22px) scale(0); transition: transform .35s var(--e-out);
}
.nav__links a:hover, .nav__links a.is-active { color: var(--fg); }
.nav__links a:hover::before, .nav__links a.is-active::before { transform: translate(-50%, 22px) scale(1); }

.nav__meta { display: inline-flex; align-items: center; gap: 0.8rem; }

/* theme toggle */
.theme-toggle {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 8px;
  color: var(--fg-2);
  border: 1px solid var(--line);
  background: transparent;
  transition: color .25s, border-color .25s, transform .3s var(--e-out);
  position: relative;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--line-strong); transform: translateY(-1px); }
.theme-toggle__moon,
.theme-toggle__sun {
  position: absolute;
  transition: opacity .3s var(--e-out), transform .3s var(--e-out);
}
:root[data-theme="light"] .theme-toggle__moon { opacity: 0; transform: rotate(90deg) scale(0.6); }
:root[data-theme="light"] .theme-toggle__sun  { opacity: 1; transform: rotate(0deg) scale(1); }
:root:not([data-theme="light"]) .theme-toggle__moon { opacity: 1; transform: rotate(0deg) scale(1); }
:root:not([data-theme="light"]) .theme-toggle__sun  { opacity: 0; transform: rotate(-90deg) scale(0.6); }

.theme-toggle--mobile { width: auto; height: auto; padding: 0.4rem 0.75rem; gap: 0.5rem; }
.theme-toggle--mobile .theme-toggle__moon,
.theme-toggle--mobile .theme-toggle__sun { position: relative; }
.theme-toggle__label { display: none; }
.theme-toggle--mobile .theme-toggle__label { display: inline; font-family: var(--font-mono); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; }

.nav__status { position: relative; width: 8px; height: 8px; display: inline-block; }
.pulse-dot {
  position: absolute; inset: 0; border-radius: 50%; background: var(--accent-graph);
  box-shadow: 0 0 12px var(--accent-graph);
}
.pulse-dot::after {
  content: ''; position: absolute; inset: -6px; border-radius: 50%;
  border: 1px solid var(--accent-graph); animation: pulse 2.4s infinite;
}
.nav__status-text {
  font-family: var(--font-italic);
  font-style: italic;
  font-size: 0.92rem;
  color: var(--fg-2);
  letter-spacing: -0.01em;
  text-transform: none;
  line-height: 1;
}
@keyframes pulse { 0% { transform: scale(1); opacity: .8 } 100% { transform: scale(2.5); opacity: 0 } }

.nav__toggle {
  display: none;
  width: 44px; height: 44px; align-items: center; justify-content: center;
  flex-direction: column; gap: 5px;
  border-radius: 8px; border: 1px solid var(--line-strong);
  background: rgba(var(--rgb-fg), 0.03);
}
.nav__toggle span { width: 18px; height: 1px; background: var(--fg); transition: transform .3s var(--e-out), opacity .2s; }
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

.nav-drawer {
  position: fixed; inset: 0; z-index: 90;
  padding: 6rem 1.5rem 2rem;
  background: rgba(var(--rgb-bg),0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  opacity: 0; visibility: hidden;
  transition: opacity .35s var(--e-out), visibility .35s;
  display: flex; flex-direction: column; justify-content: space-between;
}
.nav-drawer.is-open { opacity: 1; visibility: visible; }
.nav-drawer nav { display: flex; flex-direction: column; gap: 0.5rem; }
.nav-drawer nav a {
  padding: 0.9rem 0; border-bottom: 1px solid var(--line);
  font-family: var(--font-display); font-size: 2rem; letter-spacing: -0.03em; color: var(--fg);
}
.nav-drawer__foot { display: flex; justify-content: space-between; align-items: center; color: var(--fg-3); padding-top: 1.5rem; border-top: 1px solid var(--line); }
.nav-drawer__status { font-family: var(--font-italic); font-style: italic; font-size: 1rem; color: var(--fg-2); letter-spacing: -0.01em; display: inline-flex; align-items: center; gap: 0.5rem; }
.pulse-dot--sm { position: relative; display: inline-block; width: 6px; height: 6px; margin-right: 0.4em; vertical-align: 0; }

@media (max-width: 900px) {
  .nav__links { display: none; }
  .nav__meta  { display: none; }
  .nav__toggle { display: inline-flex; }
}

/* ═══════════════════════════════════════════════════════════
   HERO
   ═══════════════════════════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 100svh;
  padding: clamp(6rem, 12vw, 9rem) var(--pad) 0;
  overflow: hidden;
  isolation: isolate;
}
.hero__canvas {
  position: absolute; inset: 0;
  width: 100% !important; height: 100% !important;
  z-index: 0; opacity: 0.75;
}
:root[data-theme="light"] .hero__canvas { opacity: 1; }

/* Reusable constellation background canvas for other sections
   (Stack / DSA / Contact). Positioned behind content, receives no
   pointer events itself — routing is done via document.mousemove
   which reads the canvas rect. */
.constellation-bg {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  z-index: 0;
  pointer-events: none;
}
/* Sections that host a constellation-bg need a stacking context so the
   canvas can sit behind their content. */
#stack, #dsa, #contact { position: relative; overflow: hidden; }
#stack > *:not(.constellation-bg),
#dsa   > *:not(.constellation-bg),
#contact > *:not(.constellation-bg) { position: relative; z-index: 1; }

.hero__grid {
  position: absolute; inset: 0; z-index: 1;
  display: grid; grid-template-columns: repeat(5, 1fr);
  pointer-events: none;
}
.hero__vline { border-left: 1px solid var(--hair); }
.hero__vline:first-child { border-left: 0; }

.hero__inner {
  position: relative; z-index: 2;
  max-width: var(--maxw); margin: 0 auto;
  min-height: calc(100svh - clamp(6rem, 12vw, 9rem) - 2rem);
  display: grid; grid-template-columns: 1fr;
  grid-template-rows: auto auto auto auto 1fr auto;
  gap: clamp(1rem, 3vw, 2.25rem);
}
.hero__eyebrow { grid-row: 1; }
.hero__title   { grid-row: 2; }
.hero__body    { grid-row: 3; }
.hero__cta     { grid-row: 4; }
.hero__metrics { grid-row: 6; align-self: end; }

.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--fg-3);
}
.eyebrow__dot { width: 6px; height: 6px; background: var(--accent-graph); border-radius: 50%; box-shadow: 0 0 12px var(--accent-graph); }
.eyebrow__sep { opacity: 0.4; }

.hero__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(3.4rem, 9vw, 9rem);
  line-height: 0.95;
  letter-spacing: -0.035em;
  color: var(--accent-hero);
  margin: 0;
}
.hero__line { display: block; overflow: hidden; padding-bottom: 0.1em; }
.hero__line-inner { display: block; will-change: transform; }
.hero__line--sub { font-size: clamp(2rem, 5vw, 4.6rem); color: var(--fg); letter-spacing: -0.03em; line-height: 1.05; margin-top: 0.15em; }
.hero__word { display: inline-block; }
.hero__word--italic { font-family: var(--font-italic); font-style: italic; font-weight: 400; }
.hero__slash { color: var(--fg-4); font-family: var(--font-mono); font-weight: 300; font-size: 0.6em; vertical-align: 0.35em; margin-right: 0.25em; }
.hero__accent { color: var(--accent-graph); font-family: var(--font-italic); font-style: italic; }
.hero__accent--warm { color: var(--accent-warm); }
.hero__caret {
  display: inline-block; width: 0.08em; height: 0.85em; background: var(--accent-graph);
  vertical-align: -0.05em; margin-left: 0.15em; animation: caret 1.15s steps(2) infinite;
  box-shadow: 0 0 12px var(--accent-graph);
}
@keyframes caret { 50% { opacity: 0 } }

.hero__body {
  max-width: 42rem;
  color: var(--fg-2);
  font-size: clamp(1rem, 1.2vw, 1.125rem);
  line-height: 1.6;
}

.hero__cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 0.5rem; }

.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.85rem 1.15rem;
  border-radius: 100px;
  font-size: 0.9rem;
  font-family: var(--font-body); font-weight: 500;
  border: 1px solid var(--line-strong);
  transition: transform .3s var(--e-out), background .3s, border-color .3s, color .3s;
  will-change: transform;
}
.btn__arrow { display: inline-block; transition: transform .35s var(--e-out); }
.btn--primary { background: var(--fg); color: var(--bg); border-color: transparent; }
.btn--primary:hover { background: var(--accent-graph); color: #061a17; }
.btn--primary:hover .btn__arrow { transform: translateX(4px); }
.btn--ghost { background: rgba(var(--rgb-fg), 0.02); color: var(--fg); }
.btn--ghost:hover { background: rgba(var(--rgb-fg), 0.08); border-color: var(--fg-3); }

.hero__rail {
  position: absolute; right: var(--pad); top: 45%; transform: translateY(-50%);
  writing-mode: vertical-rl; transform-origin: right center;
  display: flex; align-items: center; gap: 1rem;
  font-family: var(--font-mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.14em;
  color: var(--fg-3);
}
.rail__label { color: var(--fg-4); }
.rail__list { display: inline-flex; align-items: center; gap: 0.75rem; }
.rail__sep { opacity: 0.45; }
@media (max-width: 1200px) { .hero__rail { display: none; } }

.hero__metrics {
  margin-top: auto;
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
  padding-bottom: 3rem;
}
.metric { display: flex; flex-direction: column; align-items: baseline; gap: 0.35rem; padding: 0.4rem 0; position: relative; }
.metric__row { display: flex; align-items: baseline; }
.metric__num { font-family: var(--font-display); font-size: clamp(1.6rem, 3vw, 2.6rem); font-weight: 400; letter-spacing: -0.03em; color: var(--fg); line-height: 1;
  font-variant-numeric: tabular-nums; text-shadow: 0 0 22px rgba(var(--rgb-graph), 0); transition: text-shadow 0.9s var(--e-out); }
.metric.is-loaded .metric__num { text-shadow: 0 0 18px rgba(var(--rgb-graph), 0.35); }
.metric__num--text { font-family: var(--font-italic); font-style: italic; font-size: clamp(1.4rem, 2.4vw, 2rem); font-weight: 400; }
.metric__unit { font-family: var(--font-display); font-size: 0.95rem; color: var(--fg-3); margin-left: 0.15rem; }
.metric__label { margin-top: 0.1rem; }

/* Progress bar underline that fills alongside the count-up */
.metric__bar { display: block; width: 100%; height: 2px; margin-top: 0.4rem; background: rgba(var(--rgb-fg), 0.08); border-radius: 2px; overflow: hidden; position: relative; }
.metric__bar-fill { position: absolute; inset: 0; width: 0%;
  background: linear-gradient(90deg, rgb(var(--rgb-graph)), color-mix(in srgb, rgb(var(--rgb-graph)) 60%, rgb(var(--rgb-warm))));
  box-shadow: 0 0 10px rgba(var(--rgb-graph), 0.5);
  transition: width 1.4s cubic-bezier(0.22, 1, 0.36, 1); }
.metric.is-loaded .metric__bar-fill { width: var(--loader-pct, 0%); }
.metric__bar::after { content: ''; position: absolute; top: 0; left: -40%; width: 40%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: metric-shimmer 2.4s ease-in-out infinite; opacity: 0; }
.metric.is-loaded .metric__bar::after { opacity: 1; }
@keyframes metric-shimmer { 0% { transform: translateX(0); } 100% { transform: translateX(350%); } }
@media (prefers-reduced-motion: reduce) { .metric__bar::after { display: none; } .metric__bar-fill { transition: none; } }

/* Viz variants — small interactive data visualizations */
.metric--viz { flex-direction: row; align-items: center; gap: 0.75rem; }
.metric__viz { flex: 0 0 auto; display: flex; align-items: center; justify-content: center; }
.metric__body { display: flex; flex-direction: column; align-items: baseline; gap: 0.2rem; min-width: 0; }
.metric__stat { display: flex; align-items: baseline; }

/* Ring (CGPA) */
.metric__ring { width: 46px; height: 46px; overflow: visible; }
.metric__ring-track { fill: none; stroke: rgba(var(--rgb-fg), 0.08); stroke-width: 4; }
.metric__ring-fill  { fill: none; stroke: rgb(var(--rgb-graph)); stroke-width: 4;
  stroke-linecap: round; transform: rotate(-90deg); transform-origin: 30px 30px;
  filter: drop-shadow(0 0 3px rgba(var(--rgb-graph), 0.35)); transition: stroke-dashoffset 1.4s cubic-bezier(0.22, 1, 0.36, 1); }

/* Sparkline (DSA) */
.metric__spark { width: 76px; height: 34px; overflow: visible; }
.metric__spark-line { stroke: rgb(var(--rgb-graph)); stroke-width: 1.4;
  stroke-linecap: round; stroke-linejoin: round;
  filter: drop-shadow(0 0 2px rgba(var(--rgb-graph), 0.4)); }
.metric__spark-dot  { fill: rgb(var(--rgb-graph)); filter: drop-shadow(0 0 3px rgba(var(--rgb-graph), 0.6)); }

/* Podium (Hackathon) */
.metric__podium { width: 68px; height: 34px; overflow: visible; }
.metric__podium-bar { fill: rgba(var(--rgb-fg), 0.18); transform-origin: bottom; }
.metric__podium-bar--1 { fill: rgba(var(--rgb-fg), 0.22); }
.metric__podium-bar--2 { fill: rgb(var(--rgb-graph)); filter: drop-shadow(0 0 4px rgba(var(--rgb-graph), 0.4)); }
.metric__podium-bar--3 { fill: rgba(var(--rgb-fg), 0.16); }
.metric__podium-lbl { font-family: var(--font-mono); font-size: 6px; fill: var(--fg-3); letter-spacing: 0.05em; }
.metric__podium-lbl--win { fill: rgb(var(--rgb-graph)); }

/* Pulse (Intern) */
.metric__pulse { width: 46px; height: 46px; overflow: visible; }
.metric__pulse-core { fill: rgb(var(--rgb-warm)); filter: drop-shadow(0 0 4px rgba(var(--rgb-warm), 0.55)); }
.metric__pulse-ring { fill: none; stroke: rgb(var(--rgb-warm)); stroke-width: 1; opacity: 0;
  transform-origin: 30px 30px; }
.metric__pulse-ring--1 { animation: metric-pulse 2.6s ease-out infinite; }
.metric__pulse-ring--2 { animation: metric-pulse 2.6s ease-out infinite 0.85s; }
.metric__pulse-ring--3 { animation: metric-pulse 2.6s ease-out infinite 1.7s; }
@keyframes metric-pulse {
  0%   { opacity: 0.55; transform: scale(0.55); }
  70%  { opacity: 0.18; }
  100% { opacity: 0;    transform: scale(1.35); }
}

@media (prefers-reduced-motion: reduce) {
  .metric__pulse-ring { animation: none; opacity: 0.25; }
}

@media (max-width: 720px) {
  .hero__metrics { grid-template-columns: repeat(2, 1fr); gap: 1rem 0.5rem; }
  .metric--viz { gap: 0.5rem; }
  .metric__ring, .metric__pulse { width: 38px; height: 38px; }
  .metric__spark { width: 60px; height: 28px; }
  .metric__podium { width: 56px; height: 28px; }
}

.hero__scroll {
  position: absolute; left: var(--pad); bottom: 1rem;
  display: flex; align-items: center; gap: 0.75rem;
  font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--fg-3);
}
.hero__scroll-line { width: 60px; height: 1px; background: linear-gradient(to right, var(--fg-3), transparent); position: relative; overflow: hidden; }
.hero__scroll-line::after {
  content: ''; position: absolute; inset: 0 auto 0 0; width: 30%; background: var(--fg); animation: rail 2.4s infinite var(--e-out);
}
@keyframes rail { 0% { transform: translateX(-100%) } 100% { transform: translateX(400%) } }

/* ═══════════════════════════════════════════════════════════
   SECTION SCAFFOLDING
   ═══════════════════════════════════════════════════════════ */
section { padding: clamp(4rem, 10vw, 8rem) var(--pad); position: relative; }
section > .section__head,
section > .manifesto__grid,
section > .tl,
section > .stack__grid,
section > .dsa__grid,
section > .journey__grid,
section > .contact__inner,
section > article { max-width: var(--maxw); margin-left: auto; margin-right: auto; }

.section__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.5rem 1.25rem;
  align-items: baseline;
  margin-bottom: clamp(2rem, 4vw, 4rem);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}
.section__index { grid-row: 1 / 3; color: var(--fg-4); font-size: 0.75rem; }
.section__kicker { align-self: center; }
.section__title {
  grid-column: 2 / -1;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1;
  letter-spacing: -0.035em;
  margin-top: 0.5rem;
  color: var(--fg);
}

/* ═══════════════════════════════════════════════════════════
   MANIFESTO
   ═══════════════════════════════════════════════════════════ */
.manifesto { padding-top: clamp(3rem, 6vw, 5rem); padding-bottom: clamp(3rem, 6vw, 5rem); }
.manifesto__grid {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: clamp(2rem, 6vw, 6rem); align-items: end;
}
.manifesto__text {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.8vw, 2.4rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--fg-2);
  font-weight: 400;
}
.manifesto__ledger { display: grid; gap: 0.55rem; font-size: 0.78rem; color: var(--fg-3); text-transform: uppercase; }
.manifesto__ledger li { display: grid; grid-template-columns: 3.2rem 1fr; padding-bottom: 0.5rem; border-bottom: 1px solid var(--line); }
.manifesto__ledger li span { color: var(--fg); font-family: var(--font-display); font-size: 1.15rem; letter-spacing: -0.02em; line-height: 1; text-transform: none; }
@media (max-width: 900px) { .manifesto__grid { grid-template-columns: 1fr; } }

/* ═══════════════════════════════════════════════════════════
   WORK / CASES
   ═══════════════════════════════════════════════════════════ */
.work { padding-top: clamp(3rem, 6vw, 5rem); }

.case { padding: clamp(3rem, 6vw, 6rem) 0; border-top: 1px solid var(--line); }
.case:first-of-type { border-top: 0; }

.case__head {
  display: grid; grid-template-columns: 1fr; gap: 0.75rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  max-width: 60rem;
}
.case__tag { display: inline-flex; gap: 0.75rem; align-items: baseline; color: var(--fg-3); }
.tag__num { color: var(--fg); font-size: 0.8rem; }
.tag__type { color: var(--fg-3); font-size: 0.72rem; }

.case__title {
  font-size: clamp(2.6rem, 6vw, 5rem);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--fg);
  margin-top: 0.25rem;
}
.case__sub {
  max-width: 44rem;
  color: var(--fg-2);
  font-size: clamp(1rem, 1.15vw, 1.15rem);
  line-height: 1.55;
  margin-top: 0.5rem;
}
.case__badges { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.75rem; }
.badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-family: var(--font-mono); font-size: 0.7rem;
  text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--fg-2);
  background: rgba(var(--rgb-fg), 0.02);
}
.badge--award { color: var(--accent-warm); border-color: rgba(var(--rgb-warm), 0.35); background: rgba(var(--rgb-warm), 0.06); }
.badge--award svg { color: var(--accent-warm); }

.case__stage {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(320px, 0.85fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
}
.case__stage--vertical { grid-template-columns: 1fr; }
.case__stage--sociovia { grid-template-columns: 1fr; gap: 2rem; }
.case__stage--java     { grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.95fr); }
@media (max-width: 1024px) {
  .case__stage, .case__stage--java { grid-template-columns: 1fr; }
}

/* narrative blocks — 2-col grid: number rail + content column
   All content children (h4, p) live in column 2 so text has full width. */
.case__narrative { display: grid; gap: 1.75rem; align-content: start; }
.narrative__block {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  column-gap: 0.75rem;
  row-gap: 0.35rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}
.narrative__block:first-child { border-top-color: var(--line-strong); }
.narrative__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  color: var(--fg-3); font-size: 0.72rem;
  padding-top: 0.15em;
}
.narrative__block h4 {
  grid-column: 2; grid-row: 1;
  font-family: var(--font-display); font-weight: 500; font-size: 1.05rem;
  letter-spacing: -0.02em; color: var(--fg);
}
.narrative__block p {
  grid-column: 2; grid-row: 2;
  color: var(--fg-2); font-size: 0.95rem; line-height: 1.6;
  max-width: 42rem;
}
.narrative__block p .mono { text-transform: none; letter-spacing: 0; font-size: 0.9em; color: var(--accent-graph); }

.case__stack { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.case__stack span {
  padding: 0.3rem 0.7rem;
  background: rgba(var(--rgb-fg), 0.03);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ─── 3.1 GraphGST graph viz ─── */
.graphviz {
  position: relative;
  aspect-ratio: 800/520;
  background: radial-gradient(ellipse at 50% 40%, rgba(var(--rgb-graph),0.06), transparent 60%),
              var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}
.graphviz > svg { width: 100%; height: 100%; color: var(--fg-3); }

.graphviz__hud {
  position: absolute; left: 1rem; bottom: 1rem; right: 1rem;
  display: grid; gap: 0.35rem;
  padding: 0.9rem 1rem;
  background: rgba(var(--rgb-bg),0.75);
  backdrop-filter: blur(8px);
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 0.68rem;
  text-transform: none; letter-spacing: 0.04em;
}

@media (max-width: 720px) {
  /* On narrow screens the aspect-ratio squeezed the graph so short that the
     HUD overlapped the nodes. Give the SVG breathing room and lift the HUD
     out to sit below the graph instead of over it. */
  .graphviz {
    aspect-ratio: auto;
    display: flex; flex-direction: column;
  }
  .graphviz > svg { height: 260px; flex: 0 0 auto; }
  .graphviz__hud {
    position: static;
    margin: 0.75rem;
    backdrop-filter: none;
    background: rgba(var(--rgb-bg), 0.5);
  }
  .hud__row { grid-template-columns: 3.5rem 1fr; gap: 0.5rem; }
}
.hud__row { display: grid; grid-template-columns: 4.5rem 1fr; gap: 1rem; align-items: baseline; }
.hud__key { color: var(--fg-4); text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.62rem; }
.hud__val { color: var(--fg); word-break: break-word; }
.hud__val--warn { color: var(--accent-warm); }

/* ─── 3.2 AgentGuard flow ─── */
.flow {
  display: grid; gap: 1rem;
  padding: clamp(1.5rem, 3vw, 3rem);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: 14px;
  position: relative; overflow: hidden;
}
.flow::before {
  content: ''; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(var(--rgb-agent),0.08), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(var(--rgb-graph),0.06), transparent 40%);
  pointer-events: none;
}
.flow__row { display: grid; grid-template-columns: 1fr 60px 1fr 60px 1fr; gap: 0.5rem; align-items: center; position: relative; }
.flow__node {
  position: relative;
  padding: 1.25rem 1rem;
  display: flex; flex-direction: column; gap: 0.35rem;
  border: 1px solid var(--line-strong);
  background: rgba(var(--rgb-fg), 0.02);
  border-radius: 12px;
  min-height: 92px;
  justify-content: center;
  transition: transform .35s var(--e-out), border-color .3s;
}
.flow__node:hover { transform: translateY(-3px); border-color: var(--accent-agent); }
.fnode__ring {
  position: absolute; top: 0.75rem; right: 0.75rem;
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-agent); box-shadow: 0 0 10px var(--accent-agent);
}
.flow__node--agent .fnode__ring { background: var(--accent-graph); box-shadow: 0 0 10px var(--accent-graph); }
.flow__node--pay .fnode__ring { background: var(--accent-warm); box-shadow: 0 0 10px var(--accent-warm); }
.flow__node--chain .fnode__ring { background: var(--accent-warm); box-shadow: 0 0 10px var(--accent-warm); }
.fnode__label { color: var(--fg); font-size: 0.68rem; letter-spacing: 0.08em; }
.fnode__desc { color: var(--fg-3); font-size: 0.85rem; font-family: var(--font-body); }

.flow__edge { display: flex; align-items: center; justify-content: center; color: var(--fg-4); }
.flow__edge svg { width: 100%; height: 24px; }

@media (max-width: 900px) {
  .flow { padding: 1.25rem; gap: 0.5rem; }
  .flow__row { grid-template-columns: 1fr; gap: 0.4rem; }
  /* Replace horizontal SVG arrows with a compact vertical divider — rotating
     the wide SVG caused it to spill and read as an overlapping blur. */
  .flow__edge { transform: none; height: 18px; }
  .flow__edge svg { display: none; }
  .flow__edge::after {
    content: '';
    width: 1px; height: 100%;
    background: linear-gradient(180deg, var(--line-strong), transparent);
  }
  .flow__node { min-height: 0; padding: 0.9rem 1rem; }
}

.case__meta { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 2rem; margin-top: 2rem; }
.case__meta h4 { font-family: var(--font-display); font-size: 0.85rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.12em; color: var(--fg-3); margin-bottom: 0.75rem; }
.case__meta p { color: var(--fg-2); font-size: 0.95rem; line-height: 1.55; }
.dashlist { display: grid; gap: 0.5rem; }
.dashlist li { position: relative; padding-left: 1.15rem; color: var(--fg-2); font-size: 0.95rem; line-height: 1.5; }
.dashlist li::before { content: ''; position: absolute; left: 0; top: 0.75em; width: 0.65rem; height: 1px; background: var(--fg-4); }
@media (max-width: 900px) { .case__meta { grid-template-columns: 1fr; } }

/* ─── 3.3 Sociovia terminal + grid ─── */
/* Terminal stays dark in both themes — it's a code surface */
.terminal {
  background: #06060a;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--font-mono);
  color-scheme: dark;
}
.terminal__bar { display: flex; align-items: center; gap: 0.5rem; padding: 0.65rem 1rem; background: #10101a; border-bottom: 1px solid rgba(255,255,255,0.08); }
.terminal__title { color: #676770; }
.terminal__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--fg-4); }
.terminal__dot:nth-child(1) { background: #ff5f57; }
.terminal__dot:nth-child(2) { background: #febc2e; }
.terminal__dot:nth-child(3) { background: #28c840; }
.terminal__title { margin-left: 0.6rem; color: var(--fg-3); font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.08em; }
.terminal__body { margin: 0; padding: 1.5rem clamp(1rem, 2vw, 1.75rem); color: #cfcac0; font-size: 0.82rem; line-height: 1.7; overflow-x: auto; white-space: pre; }
.tk-kw { color: #cfa5f4; }
.tk-fn { color: #7cd9c0; }
.tk-str { color: #e5b25d; }
.tk-num { color: #ff9f8a; }
.tk-cmt { color: #676770; font-style: italic; }

.soc-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.soc-card {
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(var(--rgb-fg), 0.015), transparent);
  border-radius: 12px;
  transition: border-color .3s, transform .3s var(--e-out);
}
.soc-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.soc-card__num { display: inline-block; padding: 0.25em 0.5em; border: 1px solid var(--line-strong); border-radius: 6px; color: var(--fg); font-size: 0.65rem; margin-bottom: 0.75rem; }
.soc-card h4 { font-family: var(--font-display); font-weight: 500; font-size: 1.05rem; letter-spacing: -0.02em; margin-bottom: 0.5rem; color: var(--fg); }
.soc-card p { color: var(--fg-2); font-size: 0.9rem; line-height: 1.55; }
@media (max-width: 900px) { .soc-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .soc-grid { grid-template-columns: 1fr; } }

.soc-stack { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.soc-stack span {
  padding: 0.3rem 0.7rem;
  background: rgba(var(--rgb-fg), 0.03);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.68rem;
  color: var(--fg-2);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}

/* ─── 3.3 Hookline metric + flow ─── */
.case__stage--hook { grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr); }
@media (max-width: 1024px) { .case__stage--hook { grid-template-columns: 1fr; } }

.hook-metric {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: 14px;
  position: relative;
  overflow: hidden;
}
.hook-metric__title {
  color: var(--fg-3);
  font-size: 0.7rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--line);
}
.hook-metric__row {
  display: grid;
  grid-template-columns: 8rem minmax(0, 1fr) 4rem;
  gap: 1rem;
  align-items: center;
  padding: 0.7rem 0;
}
.hook-metric__label { color: var(--fg-3); font-size: 0.72rem; }
.hook-metric__bar {
  height: 8px;
  background: rgba(var(--rgb-fg), 0.05);
  border-radius: 100px;
  overflow: hidden;
  position: relative;
}
.hook-metric__fill {
  height: 100%;
  width: 0;
  border-radius: 100px;
  animation: hookGrow 1.4s var(--e-out) forwards;
}
.hook-metric__fill--base   { background: var(--fg-4); animation-delay: 0.15s; }
.hook-metric__fill--hybrid {
  background: linear-gradient(90deg, var(--accent-graph), var(--accent-warm));
  box-shadow: 0 0 12px rgba(var(--rgb-graph), 0.35);
  animation-delay: 0.5s;
}
@keyframes hookGrow { to { width: var(--pct); } }
.hook-metric__val {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--fg);
  text-align: right;
  letter-spacing: -0.02em;
}
.hook-metric__row:nth-child(3) .hook-metric__val { color: var(--accent-graph); }

.hook-metric__foot {
  display: flex; flex-wrap: wrap; gap: 0.35rem;
  align-items: baseline;
  color: var(--fg-4);
  font-size: 0.65rem;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}
.hook-metric__endpoint { color: var(--accent-graph); text-transform: none; }

/* Two-tier flow */
.hook-flow {
  display: flex; flex-wrap: nowrap; align-items: center; justify-content: space-between;
  gap: 0.5rem;
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--fg-3);
  overflow-x: auto;
}
.hook-flow__node {
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  background: rgba(var(--rgb-fg), 0.02);
  display: flex; flex-direction: column; gap: 0.15rem;
  min-width: 0;
  flex-shrink: 0;
}
.hook-flow__node .mono { color: var(--fg); font-size: 0.65rem; }
.hook-flow__desc { color: var(--fg-3); font-size: 0.7rem; font-family: var(--font-body); }
.hook-flow__node--fail    { border-color: rgba(var(--rgb-warm), 0.35); }
.hook-flow__node--rules   { border-color: rgba(var(--rgb-fg), 0.16); }
.hook-flow__node--llm     { border-color: rgba(var(--rgb-agent), 0.35); }
.hook-flow__node--verdict { border-color: rgba(var(--rgb-graph), 0.35); }
.hook-flow__arrow { width: 40px; height: 20px; color: var(--fg-4); flex-shrink: 0; }
@media (max-width: 900px) {
  .hook-flow {
    flex-direction: column; align-items: stretch;
    overflow-x: visible;
    gap: 0.4rem;
  }
  .hook-flow__node { width: 100%; }
  /* Rotating the wide horizontal arrow SVG produced a blurred / overlapping
     ghost on mobile — replace it with a slim vertical divider instead. */
  .hook-flow__arrow {
    width: 1px; height: 14px;
    transform: none;
    background: linear-gradient(180deg, var(--line-strong), transparent);
    align-self: center;
    color: transparent;
  }
  .hook-flow__arrow svg { display: none; }
}

/* ─── 3.6 PixelCrypt LSB viz ─── */
.case__stage--pixel { grid-template-columns: minmax(0, 1fr) minmax(320px, 0.85fr); }
@media (max-width: 1024px) { .case__stage--pixel { grid-template-columns: 1fr; } }

.pixel-viz {
  padding: clamp(1.5rem, 3vw, 2.25rem);
  background: linear-gradient(180deg, var(--bg-1), var(--bg-2));
  border: 1px solid var(--line);
  border-radius: 14px;
  position: relative; overflow: hidden;
}
.pixel-viz__row {
  display: grid; grid-template-columns: 6rem 1fr; gap: 1rem;
  align-items: baseline; padding: 0.55rem 0;
}
.pixel-viz__label { color: var(--fg-4); font-size: 0.62rem; }
.pixel-viz__value { color: var(--fg); font-size: 0.85rem; letter-spacing: 0.1em; }
.pixel-viz__bits { color: var(--accent-graph); font-size: 0.7rem; letter-spacing: 0.14em; word-break: break-all; }

.pixel-viz__grid {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 4px;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(var(--rgb-fg), 0.02);
}
.pixel-viz__cell {
  position: relative;
  display: flex; align-items: center; justify-content: flex-end;
  padding: 0.5rem 0.35rem;
  border-radius: 4px;
  background: rgba(var(--rgb-fg), 0.03);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--fg-3);
  letter-spacing: 0.02em;
  min-height: 30px;
  overflow: hidden;
  white-space: nowrap;
  transition: background .3s, color .3s;
}
.pixel-viz__cell .pv-bit--high { opacity: 0.55; }
.pixel-viz__cell .pv-bit--lsb {
  color: var(--fg-3);
  padding: 0 2px;
  border-radius: 2px;
}
.pixel-viz__cell.is-payload { background: rgba(var(--rgb-graph), 0.06); }
.pixel-viz__cell.is-payload .pv-bit--lsb {
  color: var(--accent-graph);
  background: rgba(var(--rgb-graph), 0.15);
  font-weight: 500;
}

.pixel-viz__legend {
  display: flex; flex-wrap: wrap; gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--fg-4); font-size: 0.6rem;
}
.pv-dot { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 0.4em; vertical-align: -1px; }
.pv-dot--data { background: rgba(var(--rgb-fg), 0.15); }
.pv-dot--lsb { background: var(--accent-graph); }
.pv-dot--carry { background: rgba(var(--rgb-graph), 0.35); }

@media (max-width: 720px) {
  /* At mobile widths the 12-column bit grid squeezed each cell to ~19px —
     eight glyphs (7 high bits + 1 LSB) could not fit, so text spilled sideways
     and read as overlapping cells. Drop to a 4-column grid, shrink the type,
     and clip anything that would still bleed. */
  .pixel-viz { padding: 1rem; }
  .pixel-viz__row { grid-template-columns: 4.5rem 1fr; gap: 0.6rem; }
  .pixel-viz__bits { font-size: 0.62rem; letter-spacing: 0.08em; line-height: 1.55; }
  .pixel-viz__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 3px; padding: 0.5rem; }
  .pixel-viz__cell { padding: 0.4rem 0.3rem; font-size: 0.55rem; min-height: 26px; justify-content: center; }
  .pv-bit--high { display: none; }  /* only the LSB carries the signal on mobile */
  .pv-bit--lsb { padding: 0 4px; font-size: 0.72rem; font-weight: 500; }
  .pixel-viz__legend { font-size: 0.55rem; gap: 0.75rem; }
}

/* ─── 3.4 Java window viz ─── */
.window-viz {
  position: relative;
  aspect-ratio: 5/4;
  background: var(--bg-1);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: clamp(1.25rem, 3vw, 2rem);
  overflow: hidden;
  display: flex; flex-direction: column; justify-content: space-between;
  min-height: 320px;
}
.wv__lane { position: relative; flex: 0 0 auto; margin: auto 0; height: 80px; }
.wv__label {
  display: block;
  color: var(--fg-4); font-size: 0.62rem;
  margin-bottom: 0.6rem;
}
.wv__track {
  position: relative; height: 60px;
  border-top: 1px dashed var(--line-strong);
  border-bottom: 1px dashed var(--line-strong);
}
.wv__dot {
  position: absolute; top: 50%; width: 8px; height: 8px; border-radius: 50%;
  background: var(--fg-4); transform: translate(-50%, -50%);
  transition: background .4s, box-shadow .4s;
}
.wv__dot.in { background: var(--accent-graph); box-shadow: 0 0 10px var(--accent-graph); }
.wv__dot.anom { background: var(--accent-java); box-shadow: 0 0 12px var(--accent-java); }
.wv__window {
  position: absolute; top: -8px; height: 76px;
  border: 1px solid var(--accent-graph);
  background: rgba(var(--rgb-graph), 0.06);
  border-radius: 8px;
  display: flex; align-items: flex-end; justify-content: center; padding-bottom: 6px;
  color: var(--accent-graph); font-size: 0.62rem;
  box-shadow: 0 0 24px rgba(var(--rgb-graph), 0.15);
  transition: transform 0.05s linear;
  pointer-events: none;
}
.wv__legend { display: flex; flex-wrap: wrap; gap: 1.25rem; font-size: 0.62rem; }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; margin-right: 0.4em; vertical-align: -1px; }
.dot--e { background: var(--fg-4); }
.dot--w { background: var(--accent-graph); }
.dot--a { background: var(--accent-java); }

/* ─── Supporting projects (mini-case cards) ─── */
.supporting {
  border-top: 1px solid var(--line);
  padding: clamp(2.5rem, 5vw, 4rem) 0 0;
  margin-top: clamp(2rem, 4vw, 3rem);
}
.supporting__head { display: flex; align-items: baseline; gap: 1.25rem; margin-bottom: 1.5rem; }
.supporting__head .mono { color: var(--fg-4); font-size: 0.68rem; }
.supporting__head h4 { font-family: var(--font-display); font-weight: 500; font-size: 1.4rem; letter-spacing: -0.025em; color: var(--fg); }
.supporting__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1rem; }

.mini-case {
  padding: 1.5rem 1.5rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(var(--rgb-fg), 0.02);
  display: flex; flex-direction: column; gap: 0.85rem;
  transition: transform .35s var(--e-out), border-color .3s, background .3s;
  color: var(--fg);
}
.mini-case:hover, .mini-case:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: rgba(var(--rgb-graph), 0.03);
}
.mini-case__top { display: flex; align-items: baseline; gap: 0.9rem; color: var(--fg-3); }
.mini-case__num { color: var(--fg); font-size: 0.72rem; }
.mini-case__type { color: var(--fg-3); font-size: 0.68rem; }
.mini-case__title { font-family: var(--font-display); font-weight: 500; font-size: 1.6rem; letter-spacing: -0.03em; color: var(--fg); }
.mini-case__desc { color: var(--fg-2); font-size: 0.95rem; line-height: 1.55; }
.mini-case__stack { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-top: auto; padding-top: 0.75rem; border-top: 1px solid var(--line); }
.mini-case__stack span {
  padding: 0.25rem 0.6rem;
  background: rgba(var(--rgb-fg), 0.02);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 0.62rem;
  color: var(--fg-3);
  text-transform: uppercase; letter-spacing: 0.08em;
}

/* ═══════════════════════════════════════════════════════════
   EXPERIENCE TIMELINE
   ═══════════════════════════════════════════════════════════ */
.tl { display: grid; gap: 0; position: relative; }
.tl__item {
  display: grid; grid-template-columns: 40px 1fr; gap: 1.5rem;
  padding: 2rem 0;
  border-top: 1px solid var(--line);
  position: relative;
}
.tl__item:first-child { border-top: 0; }
.tl__marker { display: flex; justify-content: center; position: relative; }
.tl__marker span {
  display: inline-block; width: 10px; height: 10px; border-radius: 50%;
  background: var(--fg-4); margin-top: 0.4rem;
}
.tl__item--major .tl__marker span { background: var(--accent-graph); box-shadow: 0 0 12px var(--accent-graph); }
.tl__marker::before {
  content: ''; position: absolute; left: 50%; transform: translateX(-50%);
  top: 1.4rem; bottom: -2rem; width: 1px; background: var(--line);
}
.tl__item:last-child .tl__marker::before { display: none; }

.tl__meta { display: flex; flex-wrap: wrap; gap: 1rem; color: var(--fg-3); font-size: 0.72rem; }
.tl__loc { color: var(--fg-4); }
.tl__role { font-family: var(--font-display); font-weight: 500; font-size: clamp(1.4rem, 2.5vw, 2rem); letter-spacing: -0.025em; margin-top: 0.4rem; color: var(--fg); }
.tl__list { display: grid; gap: 0.5rem; margin-top: 0.9rem; max-width: 52rem; }
.tl__list li { position: relative; padding-left: 1.25rem; color: var(--fg-2); font-size: 1rem; line-height: 1.55; }
.tl__list li::before { content: ''; position: absolute; left: 0; top: 0.75em; width: 0.7rem; height: 1px; background: var(--fg-4); }

/* ═══════════════════════════════════════════════════════════
   STACK
   ═══════════════════════════════════════════════════════════ */
.stack__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.stack__group { padding: 1.75rem 1.5rem; background: var(--bg-1); transition: background .3s; }
.stack__group:hover { background: var(--bg-2); }
.stack__head { display: flex; align-items: baseline; gap: 0.75rem; margin-bottom: 1.25rem; }
.stack__hash { color: var(--fg-4); font-size: 0.65rem; }
.stack__head h3 { font-size: 1.05rem; font-weight: 500; color: var(--fg); letter-spacing: -0.02em; }

/* interactive tech tiles */
.tech-row { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 0.6rem; }
.tech {
  --px: 50%; --py: 50%;
  position: relative;
  display: flex; flex-direction: column; align-items: flex-start;
  gap: 0.85rem;
  padding: 1rem 1.05rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background:
    radial-gradient(circle 120px at var(--px) var(--py),
      color-mix(in srgb, var(--brand, var(--accent-graph)) 15%, transparent),
      transparent 100%),
    rgba(var(--rgb-fg), 0.018);
  color: var(--fg-2);
  cursor: pointer;
  text-align: left;
  min-height: 118px;
  transition:
    color .3s var(--e-out),
    border-color .3s var(--e-out),
    transform .35s var(--e-out);
  overflow: hidden;
}
.tech:hover {
  border-color: color-mix(in srgb, var(--brand, var(--accent-graph)) 45%, var(--line-strong));
}
.tech__mark {
  width: 34px; height: 34px;
  color: var(--fg-3);
  transition: color .3s var(--e-out), transform .35s var(--e-out);
}
/* Icons loaded as authentic SVG files via <img> (Python, Gemini, etc.) */
img.tech__mark {
  object-fit: contain;
  display: block;
}
.tech__name {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.82rem;
  color: var(--fg);
  letter-spacing: -0.005em;
  line-height: 1.2;
}
.tech::after {
  content: attr(data-context);
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.05em;
  color: var(--accent-graph);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .3s var(--e-out), transform .35s var(--e-out);
  margin-top: -0.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.tech:hover, .tech:focus-visible {
  color: var(--fg);
  border-color: color-mix(in srgb, var(--brand, var(--accent-graph)) 65%, var(--line-strong));
  background:
    radial-gradient(circle 160px at var(--px) var(--py),
      color-mix(in srgb, var(--brand, var(--accent-graph)) 22%, transparent),
      transparent 100%),
    rgba(var(--rgb-graph), 0.05);
  transform: translateY(-4px) scale(1.015);
  box-shadow:
    0 12px 40px -12px color-mix(in srgb, var(--brand, var(--accent-graph)) 45%, transparent),
    0 0 0 1px color-mix(in srgb, var(--brand, var(--accent-graph)) 30%, transparent);
  outline: none;
}
.tech:hover .tech__mark, .tech:focus-visible .tech__mark {
  transform: scale(1.18) rotate(-4deg);
  filter: drop-shadow(0 0 12px color-mix(in srgb, var(--brand, var(--accent-graph)) 70%, transparent));
}

/* HUD corner brackets — draw in on hover */
.tech::before {
  content: '';
  position: absolute;
  inset: 6px;
  pointer-events: none;
  background:
    linear-gradient(to right,  var(--brand, var(--accent-graph)) 0 10px, transparent 10px) top left  /12px 1.2px no-repeat,
    linear-gradient(to bottom, var(--brand, var(--accent-graph)) 0 10px, transparent 10px) top left  /1.2px 12px no-repeat,
    linear-gradient(to left,   var(--brand, var(--accent-graph)) 0 10px, transparent 10px) top right /12px 1.2px no-repeat,
    linear-gradient(to bottom, var(--brand, var(--accent-graph)) 0 10px, transparent 10px) top right /1.2px 12px no-repeat,
    linear-gradient(to right,  var(--brand, var(--accent-graph)) 0 10px, transparent 10px) bottom left  /12px 1.2px no-repeat,
    linear-gradient(to top,    var(--brand, var(--accent-graph)) 0 10px, transparent 10px) bottom left  /1.2px 12px no-repeat,
    linear-gradient(to left,   var(--brand, var(--accent-graph)) 0 10px, transparent 10px) bottom right /12px 1.2px no-repeat,
    linear-gradient(to top,    var(--brand, var(--accent-graph)) 0 10px, transparent 10px) bottom right /1.2px 12px no-repeat;
  opacity: 0;
  transform: scale(0.85);
  transition: opacity .35s var(--e-out), transform .45s var(--e-out);
  border-radius: 6px;
}
.tech:hover::before, .tech:focus-visible::before {
  opacity: 0.75;
  transform: scale(1);
}

/* Diagonal shimmer sweep */
.tech > .tech__shine {
  position: absolute; top: 0; left: -60%; width: 40%; height: 100%;
  background: linear-gradient(115deg, transparent 30%,
    color-mix(in srgb, var(--brand, var(--accent-graph)) 30%, transparent) 50%,
    transparent 70%);
  transform: skewX(-18deg);
  pointer-events: none;
  transition: left .8s var(--e-out);
}
.tech:hover > .tech__shine, .tech:focus-visible > .tech__shine { left: 130%; }
/* Default idle mark color — muted; each tech overrides via --brand */
.tech .tech__mark { color: var(--brand, var(--fg-3)); opacity: 0.7; }
.tech:hover .tech__mark, .tech:focus-visible .tech__mark { opacity: 1; }

/* Authentic brand-color per technology (data-brand attr) */
.tech[data-brand="java"]        { --brand: #EA2D2E; }   /* Java red */
.tech[data-brand="python"]      { --brand: #3776AB; }
.tech[data-brand="cpp"]         { --brand: #00599C; }
.tech[data-brand="c"]           { --brand: #A8B9CC; }
.tech[data-brand="js"]          { --brand: #F7DF1E; }
.tech[data-brand="html"]        { --brand: #E34F26; }
.tech[data-brand="css"]         { --brand: #1572B6; }
.tech[data-brand="spring"]      { --brand: #6DB33F; }
.tech[data-brand="flask"]       { --brand: #A5A5A5; }
.tech[data-brand="fastapi"]     { --brand: #009688; }
.tech[data-brand="vertex"]      { --brand: #4285F4; }
.tech[data-brand="gemini"]      { --brand: #8E75B2; }
.tech[data-brand="sklearn"]     { --brand: #F7931E; }
.tech[data-brand="neo4j"]       { --brand: #018BFF; }
.tech[data-brand="oracle"]      { --brand: #F80000; }
.tech[data-brand="postgres"]    { --brand: #4169E1; }
.tech[data-brand="react"]       { --brand: #61DAFB; }
.tech[data-brand="javafx"]      { --brand: #EA2D2E; }
.tech[data-brand="git"]         { --brand: #F05032; }
.tech[data-brand="github"]      { --brand: var(--fg); }
.tech[data-brand="docker"]      { --brand: #2496ED; }
.tech[data-brand="intellij"]    { --brand: #FF3181; }
.tech[data-brand="vscode"]      { --brand: #007ACC; }
.tech[data-brand="xml"]         { --brand: #AE007F; }
.tech[data-brand="linux"]       { --brand: #E7CB7A; }
.tech[data-brand="bash"]        { --brand: #4FA847; }
.tech[data-brand="tailwind"]    { --brand: #38BDF8; }
.tech[data-brand="android"]     { --brand: #3DDC84; }
.tech[data-brand="androidstudio"]{--brand: #4285F4; }
.tech[data-brand="mongodb"]     { --brand: #47A248; }
.tech[data-brand="mysql"]       { --brand: #00618A; }

/* ─── Light-mode brand overrides ───
   Ivory (#F1EDE1) needs darker/richer accents. Every branded tech gets an
   explicit dark-variant so logos never disappear against the paper. */
:root[data-theme="light"] .tech[data-brand="java"]     { --brand: #B41A1B; }
:root[data-theme="light"] .tech[data-brand="python"]   { --brand: #1F4E75; }
:root[data-theme="light"] .tech[data-brand="cpp"]      { --brand: #003D6E; }
:root[data-theme="light"] .tech[data-brand="c"]        { --brand: #4A5568; }
:root[data-theme="light"] .tech[data-brand="js"]       { --brand: #8B7A0F; }
:root[data-theme="light"] .tech[data-brand="html"]     { --brand: #A63A18; }
:root[data-theme="light"] .tech[data-brand="css"]      { --brand: #0F5893; }
:root[data-theme="light"] .tech[data-brand="spring"]   { --brand: #3F7A22; }
:root[data-theme="light"] .tech[data-brand="flask"]    { --brand: #171614; }
:root[data-theme="light"] .tech[data-brand="fastapi"]  { --brand: #006A5D; }
:root[data-theme="light"] .tech[data-brand="vertex"]   { --brand: #1B4EA8; }
:root[data-theme="light"] .tech[data-brand="gemini"]   { --brand: #4F3D82; }
:root[data-theme="light"] .tech[data-brand="sklearn"]  { --brand: #A85A0A; }
:root[data-theme="light"] .tech[data-brand="neo4j"]    { --brand: #005EB0; }
:root[data-theme="light"] .tech[data-brand="oracle"]   { --brand: #B00000; }
:root[data-theme="light"] .tech[data-brand="postgres"] { --brand: #2B3F82; }
:root[data-theme="light"] .tech[data-brand="react"]    { --brand: #067F9E; }
:root[data-theme="light"] .tech[data-brand="javafx"]   { --brand: #B41A1B; }
:root[data-theme="light"] .tech[data-brand="git"]      { --brand: #B23918; }
:root[data-theme="light"] .tech[data-brand="github"]   { --brand: #171614; }
:root[data-theme="light"] .tech[data-brand="docker"]   { --brand: #196FB0; }
:root[data-theme="light"] .tech[data-brand="intellij"] { --brand: #A82159; }
:root[data-theme="light"] .tech[data-brand="vscode"]   { --brand: #0060A5; }
:root[data-theme="light"] .tech[data-brand="xml"]      { --brand: #822168; }
:root[data-theme="light"] .tech[data-brand="linux"]    { --brand: #856815; }
:root[data-theme="light"] .tech[data-brand="bash"]     { --brand: #2F7028; }
:root[data-theme="light"] .tech[data-brand="tailwind"] { --brand: #0891B2; }
:root[data-theme="light"] .tech[data-brand="android"]  { --brand: #128242; }
:root[data-theme="light"] .tech[data-brand="androidstudio"]{--brand:#1F5EAD; }
:root[data-theme="light"] .tech[data-brand="mongodb"]  { --brand: #2E7A2E; }
:root[data-theme="light"] .tech[data-brand="mysql"]    { --brand: #003D5B; }

:root[data-theme="light"] .tech .tech__mark { opacity: 0.85; }
:root[data-theme="light"] .tech:hover .tech__mark { opacity: 1; }

/* Baked-color icon overrides for light mode (cool workspace palette).
   CSS vars inherit into the shadow DOM created by <use>, so `fill="var(--py-blue)"`
   inside a <symbol> gets the correct value per theme. */
:root[data-theme="light"] {
  --py-blue:      #1F4E75;
  --py-yellow:    #A88A00;
  --html-orange:  #A63A18;
  --css-blue:     #0F5893;
  --flask-fg:     #0F172A;
  --sklearn-white:#F5F7FA;   /* inner "hole" matches new cool canvas */
  --github-fg:    #0F172A;
}

/* ─── LIGHT MODE — TECHNICAL WORKSPACE OVERRIDES ─── */

/* Subtle 64px technical grid backdrop — only visible if you look for it */
:root[data-theme="light"] body::before {
  content: '';
  position: fixed; inset: 0;
  background-image:
    linear-gradient(to right, rgba(15, 23, 42, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
  pointer-events: none;
  z-index: 0;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 40%, transparent 100%);
}
/* No body-child z-index override needed — the ::before pseudo (z-index: 0)
   paints first in DOM order, so body children render on top naturally.
   The earlier override broke position: fixed on .nav-drawer / .grain / .cursor. */

/* Reduce serif dominance — swap Instrument Serif to Space Grotesk medium in most spots */
:root[data-theme="light"] .italic,
:root[data-theme="light"] .hero__word--italic,
:root[data-theme="light"] .hero__accent,
:root[data-theme="light"] .contact__title .italic {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 500;
  letter-spacing: -0.03em;
}
/* Keep serif ONLY for the manifesto pull-quote highlight — one editorial accent */
:root[data-theme="light"] .manifesto__text .highlight {
  font-family: var(--font-italic);
  font-style: italic;
  font-weight: 400;
}

/* Cards feel like UI panels, not paper */
:root[data-theme="light"] .stack__group,
:root[data-theme="light"] .tech,
:root[data-theme="light"] .pnode,
:root[data-theme="light"] .soc-card,
:root[data-theme="light"] .journey__card,
:root[data-theme="light"] .mini-case,
:root[data-theme="light"] .flow,
:root[data-theme="light"] .graphviz,
:root[data-theme="light"] .hook-metric,
:root[data-theme="light"] .pixel-viz,
:root[data-theme="light"] .window-viz {
  background: var(--bg-1);
  border-color: var(--line);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.02);
}
:root[data-theme="light"] .tech {
  /* Keep the pointer-following gradient but on top of pure white */
  background:
    radial-gradient(circle 120px at var(--px) var(--py),
      color-mix(in srgb, var(--brand, var(--accent-graph)) 12%, transparent),
      transparent 100%),
    var(--bg-1);
}
:root[data-theme="light"] .tech:hover {
  border-color: color-mix(in srgb, var(--brand, var(--accent-graph)) 60%, var(--line-strong));
  box-shadow: 0 4px 20px -8px color-mix(in srgb, var(--brand, var(--accent-graph)) 45%, transparent);
}

/* Section heads — more mono-metadata weight in light mode */
:root[data-theme="light"] .section__index { color: var(--fg-3); }
:root[data-theme="light"] .section__kicker { color: var(--fg-3); }

/* Nav more UI-like */
:root[data-theme="light"] .nav {
  border-bottom: 1px solid transparent;
}
:root[data-theme="light"] .nav.is-scrolled {
  border-bottom-color: var(--line);
  background: rgba(245, 247, 250, 0.85);
}

/* Bento social hover accent is stronger against white */
:root[data-theme="light"] .pnode:hover {
  border-color: color-mix(in srgb, var(--accent-graph) 45%, var(--line-strong));
  box-shadow: 0 4px 24px -10px rgba(8, 145, 178, 0.25);
}
:root[data-theme="light"] .pnode--primary .pnode__viz--github {
  background-image:
    radial-gradient(circle, rgba(var(--rgb-graph), 0.55) 1px, transparent 1.6px);
}

/* Terminal stays dark — good contrast against the white page */
:root[data-theme="light"] .terminal { border-color: transparent; box-shadow: 0 10px 30px -12px rgba(15, 23, 42, 0.25); }

/* Cursor label chip inverts nicely */
:root[data-theme="light"] .cursor__label { background: var(--fg); color: var(--bg); }

/* Custom concept icons — stay in the portfolio palette (not brand-colored) */
.tech:not([data-brand]) .tech__mark { color: var(--fg-3); }
.tech:not([data-brand]):hover .tech__mark { color: var(--accent-graph); }
.tech:hover::after, .tech:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}
/* subtle radial glow behind hovered mark */
.tech::before {
  content: '';
  position: absolute;
  top: 10px; left: 12px;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--rgb-graph), 0.28), transparent 65%);
  opacity: 0;
  transition: opacity .35s var(--e-out);
  pointer-events: none;
}
.tech:hover::before, .tech:focus-visible::before { opacity: 1; }

/* Tech → project linking: highlight matching case title */
.case.is-linked .case__title { color: var(--accent-graph); }
.case.is-linked .case__tag .tag__type { color: var(--accent-graph); }
.mini-case.is-linked .mini-case__title { color: var(--accent-graph); }
.mini-case.is-linked .mini-case__type  { color: var(--accent-graph); }

@media (max-width: 900px) { .stack__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) {
  .stack__grid { grid-template-columns: 1fr; }
  .tech-row { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); }
}

/* ═══════════════════════════════════════════════════════════
   DSA
   ═══════════════════════════════════════════════════════════ */
.dsa__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 2rem clamp(2rem, 5vw, 5rem);
  align-items: end;
}
.dsa__lead { grid-column: 1; grid-row: 1; }
.dsa__viz  { grid-column: 2; grid-row: 1 / 3; aspect-ratio: 1; max-height: 520px; align-self: center; }
.dsa__topics { grid-column: 1; grid-row: 2; }

.dsa__count {
  display: flex; align-items: baseline;
  font-family: var(--font-display);
  color: var(--fg);
  letter-spacing: -0.05em; line-height: 1;
}
.dsa__big { font-size: clamp(6rem, 14vw, 12rem); font-weight: 400; }
.dsa__plus { font-size: clamp(3rem, 6vw, 5rem); color: var(--accent-graph); }
.dsa__label { max-width: 30rem; color: var(--fg-2); font-size: 1.05rem; line-height: 1.55; margin-top: 1rem; }
.dsa__viz canvas { width: 100%; height: 100%; }

.dsa__topics { display: grid; gap: 0.5rem; max-width: 32rem; }
.dsa__topics li { display: grid; grid-template-columns: 1fr; gap: 0.35rem; padding: 0.6rem 0; border-top: 1px solid var(--line); font-size: 0.72rem; color: var(--fg-2); }
.dsa__topics li:first-child { border-top: 0; }
.dsa__topics .bar {
  display: block; height: 2px; background: linear-gradient(90deg, var(--accent-graph), var(--accent-graph) var(--w,50%), rgba(var(--rgb-fg), 0.06) var(--w,50%));
  border-radius: 2px;
}

@media (max-width: 900px) {
  .dsa__grid { grid-template-columns: 1fr; }
  .dsa__viz { grid-column: 1; grid-row: auto; max-height: 380px; }
  .dsa__topics { grid-column: 1; grid-row: auto; }
}

/* ═══════════════════════════════════════════════════════════
   JOURNEY
   ═══════════════════════════════════════════════════════════ */
.journey__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.journey__card {
  padding: 1.5rem 1.5rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(var(--rgb-fg), 0.015);
  display: flex; flex-direction: column; gap: 0.75rem;
  transition: border-color .3s, transform .3s var(--e-out);
}
.journey__card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.journey__card--current { border-color: rgba(var(--rgb-graph), 0.35); background: rgba(var(--rgb-graph), 0.04); }
.journey__year { color: var(--fg-3); font-size: 0.68rem; }
.journey__card h3 { font-family: var(--font-display); font-weight: 500; font-size: 1.15rem; letter-spacing: -0.02em; color: var(--fg); }
.journey__grade { color: var(--fg-2); font-size: 0.72rem; }
.journey__card--current .journey__grade { color: var(--accent-graph); }
@media (max-width: 900px) { .journey__grid { grid-template-columns: 1fr; } }

/* ═══════════════════════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════════════════════ */
.contact { padding-bottom: 0; }
.contact__inner { padding-bottom: clamp(3rem, 6vw, 5rem); }
.contact__eyebrow { color: var(--fg-3); margin-bottom: 1rem; }
.contact__title { font-size: clamp(2.5rem, 8vw, 7rem); line-height: 1; letter-spacing: -0.04em; color: var(--fg); max-width: 18ch; }
.contact__cta { margin: 2.5rem 0; }

.mail {
  display: inline-flex; align-items: baseline; gap: 1rem;
  padding: 0.9rem 0; position: relative;
  font-family: var(--font-display);
  color: var(--fg);
  border-bottom: 1px solid var(--line-strong);
  transition: border-color .3s, gap .3s var(--e-out);
}
.mail:hover { border-color: var(--accent-graph); gap: 1.5rem; }
.mail__label { color: var(--fg-4); }
.mail__addr { font-size: clamp(1.4rem, 3vw, 2.4rem); letter-spacing: -0.02em; }
.mail__arrow { font-size: 1.5rem; color: var(--fg-3); transition: color .3s, transform .3s var(--e-out); }
.mail:hover .mail__arrow { color: var(--accent-graph); transform: translate(4px, -4px); }

/* ─────────────── Profile bento ───────────────
   4-col grid: GitHub 2×2 primary, Email 2×1 wide, LinkedIn 1×1, LeetCode 1×1, CodeChef 2×1, HackerRank 2×1
*/
.bento {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  grid-auto-rows: 148px;
  gap: 12px;
}
.pnode {
  position: relative;
  display: flex; flex-direction: column;
  padding: 1rem 1.15rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(var(--rgb-fg), 0.018);
  color: var(--fg);
  overflow: hidden;
  transition: transform .35s var(--e-out), border-color .3s, background .3s;
  min-width: 0;
}
.pnode--primary { grid-column: span 2; grid-row: span 2; padding: 1.35rem 1.5rem 1.25rem; }
.pnode--wide    { grid-column: span 2; }

/* Compact 1×1 cards: no middle viz, everything on one horizontal row */
.pnode:not(.pnode--primary):not(.pnode--wide) {
  flex-direction: row;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
}
.pnode:not(.pnode--primary):not(.pnode--wide) .pnode__head { display: contents; }
.pnode:not(.pnode--primary):not(.pnode--wide) .pnode__grow,
.pnode:not(.pnode--primary):not(.pnode--wide) .pnode__viz { display: none; }
.pnode:not(.pnode--primary):not(.pnode--wide) .pnode__foot {
  margin-top: 0;
  flex: 1;
  min-width: 0;
  align-items: center;
}
.pnode:not(.pnode--primary):not(.pnode--wide) .pnode__foot > div { gap: 0.05rem; min-width: 0; }
.pnode:not(.pnode--primary):not(.pnode--wide) .pnode__arrow {
  position: static;
  order: 99;
  opacity: 1;
  font-size: 0.9rem;
}

.pnode__head { display: flex; align-items: center; justify-content: space-between; }
.pnode__icon {
  width: 42px; height: 42px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--fg-3);
  border: 1px solid var(--line);
  border-radius: 10px;
  transition: color .3s var(--e-out), border-color .3s, background .3s, transform .35s var(--e-out);
  flex-shrink: 0;
}
.pnode__icon svg { width: 22px; height: 22px; }
.pnode--primary .pnode__icon { width: 52px; height: 52px; border-radius: 12px; }
.pnode--primary .pnode__icon svg { width: 28px; height: 28px; }
.pnode__badge {
  padding: 0.2em 0.55em;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--fg-3);
  font-size: 0.62rem;
}

.pnode__grow { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; margin: 0.5rem -0.5rem; }
.pnode__viz {
  display: block;
  color: var(--accent-graph);
  opacity: 0.4;
  transition: opacity .5s var(--e-out), transform .5s var(--e-out);
  width: 100%;
  height: 100%;
  max-height: 70px;
}
.pnode__viz svg { width: 100%; height: 100%; display: block; }
.pnode--primary .pnode__viz { max-height: none; height: 100%; }

.pnode__foot {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 1rem;
  margin-top: auto;
}
.pnode__foot > div { display: flex; flex-direction: column; gap: 0.1rem; min-width: 0; }
.pnode__name { font-family: var(--font-display); font-weight: 500; font-size: 1rem; letter-spacing: -0.015em; color: var(--fg); }
.pnode--primary .pnode__name { font-size: 1.4rem; }
.pnode__handle { color: var(--fg-3); font-size: 0.68rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pnode__note { color: var(--fg-3); font-size: 0.78rem; text-align: right; max-width: 45%; }

.pnode__arrow {
  position: absolute; top: 1rem; right: 1rem;
  color: var(--fg-4); font-size: 1rem;
  transition: transform .35s var(--e-out), color .3s;
  opacity: 0;
}
.pnode:hover .pnode__arrow { opacity: 1; }

/* accent line traveling across bottom */
.pnode::after {
  content: '';
  position: absolute; left: 0; bottom: 0;
  height: 2px; width: 0;
  background: var(--accent-graph);
  transition: width .55s var(--e-out);
}

.pnode:hover, .pnode:focus-visible {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  background: rgba(var(--rgb-graph), 0.04);
  outline: none;
}
.pnode:hover::after, .pnode:focus-visible::after { width: 100%; }
.pnode:hover .pnode__icon, .pnode:focus-visible .pnode__icon {
  color: var(--accent-graph);
  border-color: var(--accent-graph);
  background: rgba(var(--rgb-graph), 0.08);
  transform: scale(1.05);
}
.pnode:hover .pnode__viz, .pnode:focus-visible .pnode__viz {
  opacity: 0.9;
}
.pnode:hover .pnode__arrow, .pnode:focus-visible .pnode__arrow {
  color: var(--accent-graph);
  transform: translate(3px, -3px);
}

/* GitHub-specific: draw contribution grid as CSS backdrop */
.pnode--primary .pnode__viz--github {
  background-image:
    radial-gradient(circle, rgba(var(--rgb-graph), 0.45) 1px, transparent 1.6px);
  background-size: 12px 12px;
  background-position: 0 0;
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
  min-height: 100px;
}

/* Bento breakpoints */
@media (max-width: 1024px) {
  .bento { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-rows: 130px; }
  .pnode--primary { grid-column: span 2; grid-row: span 2; }
  .pnode--wide { grid-column: span 2; }
}
@media (max-width: 560px) {
  .bento { grid-template-columns: 1fr; }
  .pnode, .pnode--primary, .pnode--wide { grid-column: span 1; grid-row: auto; }
  .pnode--primary { min-height: 200px; }
}

/* Legacy .social styles kept below for any un-migrated markup */
.social-grid { display: grid; gap: 0; margin-top: 2.5rem; }
.social {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 1.25rem;
  align-items: center;
  padding: 1.25rem 0.5rem 1.25rem 0;
  border-top: 1px solid var(--line);
  color: var(--fg);
  overflow: hidden;
  transition: padding .35s var(--e-out), background .3s;
}
.social:last-of-type { border-bottom: 1px solid var(--line); }
.social__icon {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--fg-3);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: color .3s var(--e-out), border-color .3s, background .3s;
}
.social__icon svg { width: 16px; height: 16px; }
.social__meta { display: flex; flex-direction: column; gap: 0.15rem; }
.social__name { font-family: var(--font-display); font-size: 1.05rem; letter-spacing: -0.02em; color: var(--fg); }
.social__handle { color: var(--fg-3); font-size: 0.72rem; }
.social__note { color: var(--fg-3); font-family: var(--font-body); font-size: 0.85rem; }
.social__arrow { color: var(--fg-3); font-size: 1.15rem; transition: transform .35s var(--e-out), color .3s; }

/* accent line that travels across on hover */
.social::after {
  content: '';
  position: absolute; left: 0; bottom: -1px;
  height: 1px; width: 0;
  background: var(--accent-graph);
  transition: width .5s var(--e-out);
}
.social:hover, .social:focus-visible {
  padding-left: 1rem;
  background: rgba(var(--rgb-graph), 0.02);
  outline: none;
}
.social:hover::after, .social:focus-visible::after { width: 100%; }
.social:hover .social__icon, .social:focus-visible .social__icon {
  color: var(--accent-graph);
  border-color: var(--accent-graph);
  background: rgba(var(--rgb-graph), 0.06);
}
.social:hover .social__arrow, .social:focus-visible .social__arrow {
  color: var(--accent-graph);
  transform: translate(4px, -4px);
}

/* per-platform micro-viz — appears at the right on hover */
.social__viz {
  position: absolute;
  right: 4rem; top: 50%;
  transform: translateY(-50%) translateX(20px);
  width: 100px; height: 40px;
  color: var(--accent-graph);
  opacity: 0;
  pointer-events: none;
  transition: opacity .5s var(--e-out), transform .5s var(--e-out);
}
.social__viz svg { width: 100%; height: 100%; }
.social:hover .social__viz, .social:focus-visible .social__viz {
  opacity: 0.85;
  transform: translateY(-50%) translateX(0);
}
/* GitHub-specific: draw a contribution grid via CSS */
.social__viz--github {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: 2px;
  background:
    conic-gradient(from 0deg at 50% 50%, currentColor 0deg, currentColor 90deg, transparent 90deg, transparent 360deg);
  /* Fallback: just an accent block if grid trick doesn't work */
}
.social__viz--github::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, currentColor 1px, transparent 1px 8px),
    linear-gradient(to bottom, currentColor 1px, transparent 1px 8px);
  background-size: 10px 10px;
  opacity: 0.55;
  mix-blend-mode: normal;
  border-radius: 2px;
}
/* Hide the viz on narrower widths so it doesn't collide with content */
@media (max-width: 900px) {
  .social__viz { display: none; }
  .social { grid-template-columns: 40px minmax(0, 1fr) auto; }
  .social__note { display: none; }
}
@media (max-width: 480px) {
  .social { gap: 0.9rem; padding: 1rem 0.4rem 1rem 0; }
  .social__name { font-size: 0.95rem; }
}

.foot {
  border-top: 1px solid var(--line);
  padding: 1.5rem var(--pad);
  margin: 0 calc(-1 * var(--pad));
  background: var(--bg-1);
}
.foot__row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; color: var(--fg-4); font-size: 0.68rem; max-width: var(--maxw); margin: 0 auto; }

/* ═══════════════════════════════════════════════════════════
   REVEAL / MOTION
   ═══════════════════════════════════════════════════════════ */
[data-reveal] { opacity: 0; transform: translateY(24px); }
[data-reveal].is-in { opacity: 1; transform: none; transition: opacity .9s var(--e-out), transform .9s var(--e-out); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
  [data-reveal] { opacity: 1; transform: none; }
}