/* ============================================================
   GIORGI SURAMLISHVILI — PERSONAL SITE
   Engineering notebook system. Mono-grid, schematic flourish.
   v2 — refined nav, HUD bar, scroll progress, draw-in schematics
   ============================================================ */

:root {
  /* ---- palette (light, default) ---- */
  --paper: #f6f4ed;
  --paper-2: #ecead9;
  --paper-3: #e2dfca;
  --ink: #15140f;
  --ink-2: #4a4942;
  --ink-3: #8c8a7d;
  --ink-4: #b4b29f;
  --rule: #c9c6b1;
  --rule-2: #dad7bf;
  --signal: #d94924;
  --signal-2: #c43d1c;
  --signal-soft: rgba(217, 73, 36, 0.10);

  /* ---- spotlight ---- */
  --spotlight-color-1: rgba(217, 73, 36, 0.08);
  --spotlight-color-2: rgba(245, 158, 11, 0.07);
  --spotlight-color-3: rgba(16, 185, 129, 0.05);

  /* ---- type ---- */
  --font-display: "Geist", "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, monospace;

  /* ---- geometry ---- */
  --grid: 28px;
  --maxw: 1280px;
  --gutter: 40px;
  --hud-h: 32px;
}

html[data-theme="dark"] {
  --paper: #0d0c0a;
  --paper-2: #15140f;
  --paper-3: #1d1c16;
  --ink: #f4f1e4;
  --ink-2: #c6c4b6;
  --ink-3: #7a7868;
  --ink-4: #4a4940;
  --rule: #2a2823;
  --rule-2: #1c1b16;
  --signal: #ff6b3d;
  --signal-2: #ff8056;
  --signal-soft: rgba(255, 107, 61, 0.14);

  /* ---- spotlight ---- */
  --spotlight-color-1: rgba(255, 107, 61, 0.10);
  --spotlight-color-2: rgba(255, 209, 102, 0.08);
  --spotlight-color-3: rgba(0, 230, 118, 0.05);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background 0.3s ease, color 0.3s ease;
}

body {
  background-image:
    linear-gradient(var(--rule-2) 1px, transparent 1px),
    linear-gradient(90deg, var(--rule-2) 1px, transparent 1px);
  background-size: var(--grid) var(--grid);
  background-position: -1px -1px;
  min-height: 100vh;
  padding-bottom: var(--hud-h);
}

::selection { background: var(--ink); color: var(--paper); }
html[data-theme="dark"] ::selection { background: var(--signal); color: var(--paper); }

/* ---- typography ---- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: -0.025em;
  margin: 0;
  color: var(--ink);
}

h1 {
  font-size: clamp(44px, 6.4vw, 96px);
  line-height: 1.02;
  letter-spacing: -0.04em;
  font-weight: 500;
}
h2 { font-size: clamp(32px, 4vw, 56px); line-height: 1.02; letter-spacing: -0.03em; }
h3 { font-size: 24px; line-height: 1.15; letter-spacing: -0.02em; }

p { margin: 0; color: var(--ink-2); max-width: 64ch; }

a {
  color: var(--ink);
  text-decoration: none;
  transition: color 0.18s ease;
}
a:hover { color: var(--signal); }

.mono { font-family: var(--font-mono); }
.label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.label-signal { color: var(--signal); }
.dim { color: var(--ink-3); }

.hairline { height: 1px; background: var(--rule); border: 0; }

/* ---- layout shell ---- */
.page {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
}

/* ============================================================
   SCROLL PROGRESS
   ============================================================ */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: transparent;
  z-index: 100;
  pointer-events: none;
}
.scroll-progress .bar {
  height: 100%;
  background: var(--signal);
  width: 0%;
  transition: width 0.05s linear;
  box-shadow: 0 0 8px var(--signal);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--rule);
}
.nav-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px var(--gutter);
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-mark {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.025em;
  font-size: 17px;
  color: var(--ink);
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
}
.nav-mark .mark-dot {
  width: 12px;
  height: 12px;
  background: var(--signal);
  display: inline-block;
  position: relative;
  cursor: pointer;
}
.nav-mark .mark-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border: 1px solid var(--signal);
  opacity: 0;
  transition: opacity 0.2s, inset 0.3s;
}
.nav-mark:hover .mark-dot::after { opacity: 0.4; inset: -5px; }

.nav-links {
  position: relative;
  display: flex;
  gap: 4px;
  margin-left: auto;
  font-family: var(--font-mono);
}
.nav-links a {
  position: relative;
  z-index: 1;
  padding: 8px 14px 8px 22px;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
  border-radius: 4px;
  border: 1px solid transparent;
  transition: color 0.25s ease, background-color 0.25s ease, border-color 0.25s ease;
}
.nav-links a::before {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 22px;
  right: 14px;
  height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::before { transform: scaleX(1); }

.nav-links a::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 10px;
  width: 5px;
  height: 5px;
  background: var(--signal);
  border-radius: 50%;
  transform: translateY(-50%) scale(0);
  opacity: 0;
  box-shadow: 0 0 8px var(--signal);
  transition: transform 0.25s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.2s ease;
  pointer-events: none;
}

.nav-links a.active {
  color: var(--ink);
  background: var(--paper-2);
  border-color: var(--rule);
}
.nav-links.js-nav-pill a.active {
  background: transparent !important;
  border-color: transparent !important;
}
.nav-links a.active::after {
  transform: translateY(-50%) scale(1);
  opacity: 1;
  animation: navPulse 2s ease-in-out infinite;
}
.nav-links a.active::before {
  transform: scaleX(0) !important;
}
@keyframes navPulse {
  0%, 100% { box-shadow: 0 0 6px var(--signal); opacity: 1; }
  50% { box-shadow: 0 0 14px var(--signal); opacity: 0.8; }
}

/* Sliding Indicator Pill */
.nav-indicator-pill {
  position: absolute;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 4px;
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: transform 0.32s cubic-bezier(0.34, 1.25, 0.64, 1), 
              width 0.32s cubic-bezier(0.34, 1.25, 0.64, 1), 
              height 0.32s cubic-bezier(0.34, 1.25, 0.64, 1), 
              opacity 0.18s ease;
  will-change: transform, width, height;
}

.theme-toggle,
.help-btn {
  background: transparent;
  border: 1px solid var(--rule);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  padding: 8px 14px;
  cursor: pointer;
  text-transform: uppercase;
  font-weight: 500;
  transition: border-color 0.18s, color 0.18s, background 0.18s;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.help-btn {
  padding: 8px 12px;
  margin-left: 6px;
  letter-spacing: 0;
  font-size: 13px;
}
.help-btn:hover { border-color: var(--signal); color: var(--signal); }
.theme-toggle::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--ink);
  border-radius: 50%;
  transition: background 0.18s, transform 0.3s;
}
html[data-theme="dark"] .theme-toggle::before { background: var(--paper); box-shadow: inset -2px -2px 0 var(--ink-3); }
.theme-toggle:hover { border-color: var(--signal); color: var(--signal); }
.theme-toggle:hover::before { background: var(--signal); transform: rotate(180deg); }

/* ============================================================
   SECTION
   ============================================================ */
.section {
  padding: 120px 0 40px;
  position: relative;
}
.section-head {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  align-items: end;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 56px;
  position: relative;
  overflow: hidden;
}
.section-marker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--signal);
  text-transform: uppercase;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-marker::before {
  content: "";
  width: 28px;
  height: 1px;
  background: var(--signal);
}
.section-title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.section-title h2 { flex: 1; }
.section-title .meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 80px 0 120px;
  position: relative;
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
}
.hero-side {
  display: flex;
  flex-direction: column;
  gap: 24px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}
.hero-side .row { display: flex; flex-direction: column; gap: 6px; }
.hero-side .row .k { color: var(--ink-3); text-transform: uppercase; letter-spacing: 0.1em; }
.hero-side .row .v { color: var(--ink); font-weight: 500; font-size: 12px; }
.hero-side .row .v.live::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--signal);
  border-radius: 50%;
  margin-right: 8px;
  animation: pulse 1.6s ease-in-out infinite;
  vertical-align: middle;
}

.hero-main h1 {
  margin-bottom: 28px;
}

/* word-mask reveal */
.word-mask {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}
.word-mask > span {
  display: inline-block;
  transform: translateY(110%);
  animation: wordRise 0.9s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
@keyframes wordRise {
  to { transform: translateY(0); }
}

/* ----- decode / scramble headline ----- */
.decode-line {
  display: block;
  white-space: nowrap;
  position: relative;
  line-height: 1.05;
}
.decode-line .decode {
  display: inline-block;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.045em;
}
.decode-line .decode .raw {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
}
.decode-line.signal { color: var(--signal); }
.decode-line.signal .decode::after {
  content: "_";
  color: var(--signal);
  margin-left: 8px;
  animation: caret 1.1s steps(2) infinite;
  font-weight: 400;
  opacity: 0;
}
.decode-line.signal.done .decode::after { opacity: 1; }
@keyframes caret { 50% { opacity: 0; } }

.hero-sub {
  font-size: 18px;
  font-family: var(--font-mono);
  color: var(--ink-2);
  max-width: 60ch;
  margin-top: 28px;
  line-height: 1.65;
  letter-spacing: -0.005em;
}
.hero-sub .accent { color: var(--ink); font-weight: 500; }

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 48px;
  flex-wrap: wrap;
}
.btn {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  padding: 14px 22px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
  position: relative;
  overflow: hidden;
}
.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--signal);
  transform: translateY(101%);
  transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 0;
}
.btn:hover::before { transform: translateY(0); }
.btn:hover { border-color: var(--signal); color: #fff; transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
.btn > * { position: relative; z-index: 1; }
.btn .arrow { transition: transform 0.2s; }
.btn:hover .arrow { transform: translateX(4px); }

.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost::before { background: var(--ink); }
.btn.ghost:hover { color: var(--paper); border-color: var(--ink); box-shadow: 4px 4px 0 var(--signal); }

/* corner ticks */
.tick {
  position: absolute;
  width: 14px; height: 14px;
  border-color: var(--ink-3);
  border-style: solid;
  pointer-events: none;
}
.tick.tl { top: 16px; left: 16px; border-width: 1px 0 0 1px; }
.tick.tr { top: 16px; right: 16px; border-width: 1px 1px 0 0; }
.tick.bl { bottom: 16px; left: 16px; border-width: 0 0 1px 1px; }
.tick.br { bottom: 16px; right: 16px; border-width: 0 1px 1px 0; }

/* coordinate readout (now lives in HUD) */
.coord {
  position: absolute;
  top: 20px;
  right: 32px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  display: flex;
  gap: 18px;
}
.coord span b { color: var(--ink); font-weight: 500; }

/* ============================================================
   MARQUEE TICKER
   ============================================================ */
.marquee {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  overflow: hidden;
  background: var(--paper);
  position: relative;
  --marquee-duration: 60s;
}
.marquee-track {
  display: flex;
  gap: 64px;
  padding: 14px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  white-space: nowrap;
  animation: marquee var(--marquee-duration) linear infinite;
  width: max-content;
}
.marquee-track span {
  display: inline-flex;
  align-items: center;
  gap: 16px;
}
.marquee-track .dot {
  width: 6px; height: 6px;
  background: var(--signal);
  border-radius: 50%;
  display: inline-block;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ============================================================
   PROJECT LIST
   ============================================================ */
.projects { display: flex; flex-direction: column; }

/* --- variant A: notebook entry (image left) --- */
.proj.layout-notebook {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  padding: 32px;
  margin-bottom: 24px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 12px;
  position: relative;
  box-shadow: 0 4px 20px rgba(0,0,0,0.02);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease, background 0.4s ease;
}
.proj.layout-notebook:last-child { margin-bottom: 0; }
.proj.layout-notebook .proj-index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.1em;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.proj.layout-notebook .proj-index .idx-num {
  font-family: var(--font-display);
  font-size: 28px;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-weight: 500;
  line-height: 1;
}
.proj.layout-notebook .proj-body {
  display: grid;
  grid-template-columns: 300px 1fr 120px;
  gap: 40px;
  align-items: start;
}
.proj.layout-notebook .proj-thumb {
  aspect-ratio: 4/3;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 8px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
  display: block;
}
.proj.layout-notebook:hover .proj-thumb { border-color: var(--signal); }
.proj.layout-notebook .proj-title {
  font-family: var(--font-display);
  font-size: 32px;
  letter-spacing: -0.025em;
  margin-bottom: 12px;
  line-height: 1.05;
  font-weight: 500;
}
.proj.layout-notebook .proj-desc { color: var(--ink-2); margin-top: 16px; max-width: 52ch; font-size: 13px; line-height: 1.65; }
.proj.layout-notebook .proj-meta {
  margin-top: 20px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.proj.layout-notebook .proj-meta b { color: var(--ink); font-weight: 500; }
.proj.layout-notebook .proj-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: right;
}
.proj.layout-notebook .proj-links a {
  color: var(--ink-2);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
  transition: color 0.2s, gap 0.2s;
}
.proj.layout-notebook .proj-links a:hover { color: var(--signal); gap: 12px; }
.proj.layout-notebook:hover {
  transform: translateY(-4px);
  border-color: var(--signal);
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper) 70%);
  box-shadow: 0 16px 32px rgba(0,0,0,0.05), 0 0 1px rgba(0,0,0,0.1);
}
html[data-theme="dark"] .proj.layout-notebook:hover {
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper-2) 70%);
  box-shadow: 0 16px 32px rgba(0,0,0,0.3), 0 0 1px rgba(255,255,255,0.1);
}

/* --- variant B: spec sheet (grid of cards) --- */
.projects.layout-spec {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  border: none;
  padding: 16px 0;
}
.proj.layout-spec {
  display: flex;
  flex-direction: column;
  padding: 32px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 12px;
  position: relative;
  box-shadow: 0 4px 20px rgba(0,0,0,0.02);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease, background 0.4s ease;
}
.proj.layout-spec:hover {
  transform: translateY(-8px);
  border-color: var(--signal);
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper) 70%);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.06), 0 0 1px rgba(0, 0, 0, 0.1);
}
html[data-theme="dark"] .proj.layout-spec {
  background: var(--paper-2);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
html[data-theme="dark"] .proj.layout-spec:hover {
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper-2) 70%);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4), 0 0 1px rgba(255, 255, 255, 0.1);
}
.proj.layout-spec .proj-thumb {
  aspect-ratio: 4/3;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  border-radius: 8px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
  display: block;
}
.proj.layout-spec .proj-index {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
}
.proj.layout-spec .proj-title {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin-bottom: 12px;
  font-weight: 500;
}
.proj.layout-spec .proj-desc {
  color: var(--ink-2);
  font-size: 12px;
  margin-bottom: 20px;
  flex: 1;
  line-height: 1.6;
}
.proj.layout-spec .proj-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  padding-top: 16px;
  border-top: 1px dashed var(--rule);
  color: var(--ink-3);
}
.proj.layout-spec .proj-meta b { color: var(--ink); font-weight: 500; display: block; }
.proj.layout-spec .proj-links {
  display: flex;
  gap: 14px;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.proj.layout-spec .proj-links a { color: var(--ink); }
.proj.layout-spec .proj-links a:hover { color: var(--signal); }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--rule);
  font-weight: 500;
}
.status-pill.shipped { color: var(--ink-2); }
.status-pill.shipped::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--ink-3);
}
.status-pill.wip { color: var(--signal); border-color: var(--signal); }
.status-pill.wip::before {
  content: "";
  width: 6px; height: 6px;
  background: var(--signal);
  border-radius: 50%;
  animation: pulse 1.6s ease-in-out infinite;
}

/* ----- schematic thumbnails ----- */
.thumb-schematic {
  position: absolute;
  inset: 0;
  background: var(--paper-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  overflow: hidden;
}
.proj:hover .thumb-schematic { transform: scale(1.03); }
.thumb-schematic svg { width: 90%; height: 90%; color: var(--ink); display: block; }
.thumb-schematic .stroke {
  stroke: var(--ink);
  fill: none;
  stroke-width: 1.2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.thumb-schematic .stroke-dim { stroke: var(--ink-3); fill: none; stroke-width: 0.8; }
.thumb-schematic .fill-signal { fill: var(--signal); }
.thumb-schematic .stroke-signal { stroke: var(--signal); fill: none; stroke-width: 1.4; stroke-linecap: round; }
.thumb-schematic text {
  font-family: var(--font-mono);
  font-size: 5.5px;
  fill: var(--ink-3);
  letter-spacing: 0.08em;
  font-weight: 500;
}
.thumb-schematic .text-signal { fill: var(--signal); }

/* schematic draw-in animation */
.thumb-schematic.draw [data-draw] {
  stroke-dasharray: var(--len, 400);
  stroke-dashoffset: var(--len, 400);
}
.thumb-schematic.draw.in [data-draw] {
  animation: drawIn 1.2s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  animation-delay: var(--d, 0s);
}
@keyframes drawIn {
  to { stroke-dashoffset: 0; }
}
.thumb-schematic.draw [data-fade] {
  opacity: 0;
}
.thumb-schematic.draw.in [data-fade] {
  animation: fadeIn 0.5s ease forwards;
  animation-delay: calc(var(--d, 0s) + 0.5s);
}
@keyframes fadeIn { to { opacity: 1; } }

/* gentle hover pulse on signal elements */
.proj:hover .thumb-schematic .stroke-signal,
.proj:hover .thumb-schematic .fill-signal {
  animation: signalPulse 1.4s ease-in-out infinite;
}
@keyframes signalPulse {
  0%, 100% { filter: none; }
  50% { filter: drop-shadow(0 0 4px var(--signal)); }
}

/* "open" overlay pill on hover */
.proj .open-pill {
  position: absolute;
  top: 16px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 6px 12px;
  background: rgba(21, 20, 15, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 20px;
  color: var(--paper);
  opacity: 0;
  transform: translateY(-4px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  z-index: 2;
  font-weight: 500;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
html[data-theme="dark"] .proj .open-pill {
  background: rgba(244, 240, 230, 0.85);
  color: var(--paper-2);
  border: 1px solid rgba(0, 0, 0, 0.15);
}
.proj .open-pill:hover {
  background: var(--signal);
  color: #fff;
  border-color: var(--signal);
  box-shadow: 0 4px 12px var(--signal-soft);
}
.proj:hover .open-pill { opacity: 1; transform: translateY(0); }

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

/* ============================================================
   ABOUT / NOW
   ============================================================ */
.two-col {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
}
.two-col .body { display: flex; flex-direction: column; gap: 24px; max-width: 64ch; }
.two-col .body p { font-size: 15px; line-height: 1.75; }
.two-col .body p strong { color: var(--ink); font-weight: 500; }

.now-box {
  border: 1px solid var(--rule);
  border-radius: 12px;
  padding: 36px;
  background: var(--paper-2);
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.01);
  transition: transform 0.55s cubic-bezier(0.22, 1, 0.36, 1),
              box-shadow 0.55s cubic-bezier(0.22, 1, 0.36, 1),
              border-color 0.55s cubic-bezier(0.22, 1, 0.36, 1),
              background 0.55s cubic-bezier(0.22, 1, 0.36, 1);
}
.now-box:hover {
  transform: translateY(-3px);
  border-color: var(--signal);
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper-2) 75%);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.05), 0 0 1px rgba(0, 0, 0, 0.08);
}
html[data-theme="dark"] .now-box {
  box-shadow: 0 4px 24px rgba(0,0,0,0.15), 0 1px 2px rgba(0,0,0,0.1);
}
html[data-theme="dark"] .now-box:hover {
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper-2) 75%);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 1px rgba(255, 255, 255, 0.1);
}
.now-box::before {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 24px; height: 1px;
  background: var(--signal);
  border-top-left-radius: 12px;
}
.now-box::after {
  content: "";
  position: absolute;
  top: -1px; left: -1px;
  width: 1px; height: 24px;
  background: var(--signal);
  border-top-left-radius: 12px;
}
.now-box .live-dot {
  display: inline-block;
  width: 8px; height: 8px;
  background: var(--signal);
  border-radius: 50%;
  margin-right: 10px;
  animation: pulse 1.6s ease-in-out infinite;
}
.now-box h3 { font-size: 24px; margin-bottom: 12px; }
.now-box .progress-row {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
}
.progress-item { display: flex; flex-direction: column; gap: 8px; font-family: var(--font-mono); font-size: 11px; }
.progress-item .top { display: flex; justify-content: space-between; color: var(--ink-2); letter-spacing: 0.04em; }
.progress-item .top b { color: var(--ink); font-weight: 500; }
.progress-bar { height: 4px; background: var(--rule-2); position: relative; overflow: hidden; }
.progress-bar .fill {
  position: absolute; top: 0; left: 0; height: 100%; width: 0;
  background: var(--signal);
  transition: width 1.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.progress-bar .fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 2s ease-in-out infinite;
}
@keyframes shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* contact / footer */
.contact {
  padding: 100px 0 60px;
  border-top: 1px solid var(--rule);
  position: relative;
}
.contact-grid {
  display: grid;
  grid-template-columns: 200px 1fr 1fr;
  gap: 40px;
}
.contact-grid h2 { font-size: clamp(40px, 6vw, 80px); letter-spacing: -0.04em; line-height: 0.96; }
.contact-list { display: flex; flex-direction: column; gap: 0; font-family: var(--font-mono); }
.contact-list a {
  display: flex;
  justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink);
  font-size: 15px;
  letter-spacing: 0.02em;
  transition: padding-left 0.3s, color 0.2s;
  position: relative;
}
.contact-list a::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 1px;
  width: 0;
  background: var(--signal);
  transition: width 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}
.contact-list a:hover { color: var(--signal); padding-left: 12px; }
.contact-list a:hover::before { width: 100%; }
.contact-list a .arrow { color: var(--ink-3); transition: color 0.2s, transform 0.25s; }
.contact-list a:hover .arrow { color: var(--signal); transform: translateX(4px); }

.footer {
  padding: 36px 0 56px;
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.06em;
  border-top: 1px solid var(--rule);
}

/* ============================================================
   PROJECT DETAIL PAGE
   ============================================================ */
.detail-hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.crumbs {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 40px;
  display: flex;
  gap: 8px;
  align-items: center;
  font-weight: 500;
}
.crumbs a { color: var(--ink-3); }
.crumbs a:hover { color: var(--signal); }
.crumbs .sep { color: var(--rule); }
.crumbs .current { color: var(--ink); }

.detail-title { font-size: clamp(40px, 6vw, 88px); letter-spacing: -0.035em; margin: 20px 0 28px; line-height: 1; }
.detail-sub { font-size: 19px; max-width: 64ch; color: var(--ink-2); line-height: 1.6; }

.spec-table {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.spec-table .cell {
  padding: 24px 20px 24px 0;
  border-right: 1px solid var(--rule);
  font-family: var(--font-mono);
  position: relative;
  transition: background 0.2s;
}
.spec-table .cell:hover { background: var(--paper-2); }
.spec-table .cell:last-child { border-right: 0; }
.spec-table .cell .k {
  display: block;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 10px;
  font-weight: 500;
}
.spec-table .cell .v {
  font-family: var(--font-display);
  font-size: 24px;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-weight: 500;
}

.figure {
  margin: 72px 0 40px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.figure .caption {
  position: absolute;
  bottom: -32px;
  left: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  line-height: 1.6;
}
.figure .caption b { color: var(--ink); font-weight: 500; }

.prose {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 40px;
  padding: 56px 0;
}
.prose .body { display: flex; flex-direction: column; gap: 18px; max-width: 64ch; }
.prose .body p { font-size: 15px; line-height: 1.8; }
.prose ul.bullets { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 14px; }
.prose ul.bullets li {
  position: relative;
  padding-left: 28px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-2);
}
.prose ul.bullets li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--signal);
  font-weight: 500;
}

.next-proj {
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 56px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 72px;
}
.next-proj .next-side .label { display: block; margin-bottom: 10px; }
.next-proj a.next-link {
  font-family: var(--font-display);
  font-size: 40px;
  letter-spacing: -0.025em;
  display: flex;
  align-items: center;
  gap: 20px;
  font-weight: 500;
  line-height: 1;
}
.next-proj a.next-link:hover { color: var(--signal); }
.next-proj a.next-link .arrow { transition: transform 0.3s cubic-bezier(0.22, 1, 0.36, 1); display: inline-block; }
.next-proj a.next-link:hover .arrow { transform: translateX(12px); }

/* ============================================================
   HUD STATUS BAR (fixed bottom)
   ============================================================ */
.hud {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  height: var(--hud-h);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  z-index: 60;
  display: flex;
  align-items: center;
  padding: 0 24px;
  gap: 32px;
  border-top: 1px solid var(--ink);
}
.hud .cell {
  display: flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
}
.hud .cell .k { color: var(--ink-4); }
.hud .cell .v { color: var(--paper); }
/* Light mode: HUD bg is dark (--ink: #15140f) so labels need to be bright enough */
html[data-theme="light"] .hud .cell .k { color: #a6a495; }
html[data-theme="light"] .hud .cell .v { color: #ffffff; }
/* Dark mode: HUD bg is light (--ink: #f4f1e4) so labels need to be dark enough */
html[data-theme="dark"] .hud .cell .k { color: #7a7868; }
html[data-theme="dark"] .hud .cell .v { color: #15140f; }
/* Blueprint mode: HUD bg is dark blue so labels need to be themed properly */
html.blueprint .hud {
  background: var(--paper-2);
  border-top: 1px solid var(--rule);
}
html.blueprint .hud .cell .k { color: var(--ink-3); }
html.blueprint .hud .cell .v { color: var(--ink); }
.hud .cell .live::before {
  content: "";
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--signal);
  margin-right: 6px;
  vertical-align: middle;
  animation: pulse 1.6s ease-in-out infinite;
}
.hud .right { margin-left: auto; display: flex; gap: 24px; }
.hud .sep { width: 1px; height: 12px; background: var(--ink-4); opacity: 0.3; }
@media (max-width: 720px) {
  .hud { font-size: 9px; padding: 0 14px; gap: 14px; }
  .hud .desktop-only { display: none; }
}

/* ============================================================
   TWEAKS PANEL
   ============================================================ */
.tweaks {
  position: fixed;
  bottom: calc(var(--hud-h) + 20px);
  right: 24px;
  width: 280px;
  background: var(--paper);
  border: 1px solid var(--ink);
  font-family: var(--font-mono);
  z-index: 100;
  box-shadow: 6px 6px 0 var(--ink);
  display: none;
  animation: tweaksIn 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}
@keyframes tweaksIn { from { opacity: 0; transform: translate(8px, 8px); } to { opacity: 1; transform: none; } }
.tweaks.open { display: block; }
.tweaks-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
}
.tweaks-head button {
  background: transparent;
  border: 0;
  color: var(--ink);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 0;
}
.tweaks-body { padding: 18px; display: flex; flex-direction: column; gap: 20px; }
.tweak-group { display: flex; flex-direction: column; gap: 10px; }
.tweak-group .k {
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.seg {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--rule);
}
.seg button {
  background: transparent;
  border: 0;
  padding: 12px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-2);
  text-transform: uppercase;
  font-weight: 500;
  transition: background 0.2s, color 0.2s;
}
.seg button + button { border-left: 1px solid var(--rule); }
.seg button:hover { color: var(--ink); }
.seg button.active { background: var(--ink); color: var(--paper); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
  :root { --gutter: 20px; }
  .section { padding: 64px 0 24px; }
  .section-head,
  .hero-grid,
  .two-col,
  .prose,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .proj.layout-notebook { grid-template-columns: 1fr; }
  .proj.layout-notebook .proj-body { grid-template-columns: 1fr; gap: 20px; }
  .proj.layout-notebook .proj-links { flex-direction: row; text-align: left; gap: 16px; justify-content: flex-start; flex-wrap: wrap; }
  .proj.layout-notebook .proj-links a { justify-content: flex-start; }
  .projects.layout-spec { grid-template-columns: 1fr; gap: 24px; }
  .spec-table { grid-template-columns: 1fr 1fr; }
  .hero-stats, .ticker-row { grid-template-columns: 1fr 1fr; }
  .hero-stats .cell:nth-child(2), .ticker-row .cell:nth-child(2) { border-right: 0; }
  .now-box { grid-template-columns: 1fr; padding: 24px; gap: 28px; }
  .timeline-row { grid-template-columns: 80px 1fr; }
  .timeline-row .org { grid-column: 2; }
  .nav-links { gap: 0; }
  .nav-links a { padding: 8px; font-size: 10px; }
  .nav-mark { font-size: 14px; }
  .nav-inner { gap: 12px; padding: 12px 20px; }
  .coord { display: none; }
  .next-proj { flex-direction: column; gap: 24px; align-items: flex-start; }
  .next-proj a.next-link { font-size: 28px; }
  .detail-title { font-size: clamp(32px, 9vw, 56px); }
  .figure { aspect-ratio: 4/3; }
  .bom .row { grid-template-columns: 50px 1fr; gap: 4px; }
  .bom .row > div:nth-child(3),
  .bom .row > div:nth-child(4) { grid-column: 2; font-size: 10px; }
  .bom .row.head > div { grid-column: auto; }
  .bom .row.head > div:nth-child(3),
  .bom .row.head > div:nth-child(4) { display: none; }
}

/* ===== PHONE-FIRST tighter pass ===== */
@media (max-width: 640px) {
  :root { --gutter: 16px; --hud-h: 0px; }
  body { padding-bottom: 0; }
  .hud { display: none; }
  .nav-inner { padding: 10px 16px; gap: 8px; }
  .nav-mark { font-size: 13px; gap: 8px; }
  .nav-mark .mark-dot { width: 9px; height: 9px; }
  .nav-links { display: none; }
  .theme-toggle { font-size: 10px; padding: 6px 10px; letter-spacing: 0.06em; }
  .theme-toggle::before { width: 6px; height: 6px; }
  .hero { padding: 48px 0 64px; }
  h1 { font-size: clamp(40px, 12vw, 64px); }
  h2 { font-size: clamp(26px, 7vw, 40px); }
  .hero-sub { font-size: 15px; margin-top: 20px; }
  .hero-side { flex-direction: row; flex-wrap: wrap; gap: 16px; margin-bottom: 24px; }
  .hero-side .row { gap: 2px; }
  .hero-side .row .v { font-size: 11px; }
  .hero-actions { margin-top: 28px; }
  .btn { padding: 12px 16px; font-size: 11px; }
  .ticker-row, .hero-stats { margin-top: 32px; grid-template-columns: 1fr 1fr; }
  .ticker-row .cell, .hero-stats .cell { padding: 14px; }
  .hero-stats .cell .v, .ticker-row .cell .v { font-size: 22px; }
  .section { padding: 56px 0 16px; }
  .section-head { padding-bottom: 20px; margin-bottom: 28px; gap: 12px; }
  .section-marker { font-size: 10px; }
  .section-title { gap: 8px; }
  .section-title .meta { font-size: 10px; }
  .marquee-track { font-size: 11px; gap: 32px; padding: 10px 0; }
  .profile { margin-bottom: 48px; }
  .profile-photo { aspect-ratio: 16/9; }
  .profile-data { padding: 18px 20px; gap: 14px; }
  .profile-data .v { font-size: 15px; }
  .profile-data .v .mono-sub { font-size: 10px; }
  .chip, .chip-pred { font-size: 10px; padding: 4px 8px; letter-spacing: 0.06em; }
  .proj.layout-notebook { padding: 24px 0; gap: 16px; }
  .proj.layout-notebook .proj-title { font-size: 24px; }
  .proj.layout-notebook .proj-desc { font-size: 13px; }
  .proj.layout-notebook .proj-index { display: flex; flex-direction: row; gap: 12px; align-items: baseline; }
  .proj.layout-notebook .proj-index .idx-num { font-size: 20px; }
  .now-box h3 { font-size: 20px; }
  .exp-col { padding: 20px 0; }
  .exp-item .what { font-size: 17px; }
  .skills-col { padding: 18px 0; }
  .contact-list a { font-size: 13px; padding: 14px 0; }
  .footer { padding: 24px 0; flex-direction: column; gap: 8px; font-size: 10px; align-items: flex-start; }
  .tweaks { right: 12px; bottom: 12px; width: calc(100vw - 24px); max-width: 320px; }
  .help-overlay { padding: 16px; }
  .help-card { max-width: 100%; }
  .help-grid { grid-template-columns: 1fr; gap: 8px; }
  .help-body h3 { font-size: 22px; }
  .decode-line { white-space: normal; word-break: break-word; }
}

@media (max-width: 420px) {
  .ticker-row, .hero-stats { grid-template-columns: 1fr; }
  .ticker-row .cell, .hero-stats .cell { border-right: 0; border-bottom: 1px solid var(--rule); }
  .ticker-row .cell:last-child, .hero-stats .cell:last-child { border-bottom: 0; }
  .spec-table { grid-template-columns: 1fr 1fr; }
  .nav-mark { font-size: 12px; }
  .theme-toggle { padding: 6px 8px; }
}

/* reveal helper — content is visible by default; .in adds a subtle slide-in transition */
[data-reveal] {
  transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}
[data-reveal].pre-reveal {
  opacity: 0;
  transform: translateY(14px);
}
[data-reveal].pre-reveal.in { opacity: 1; transform: none; }
[data-reveal].pre-reveal[data-reveal-delay="1"] { transition-delay: 0.06s; }
[data-reveal].pre-reveal[data-reveal-delay="2"] { transition-delay: 0.12s; }
[data-reveal].pre-reveal[data-reveal-delay="3"] { transition-delay: 0.18s; }
[data-reveal].pre-reveal[data-reveal-delay="4"] { transition-delay: 0.24s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ============================================================
   EASTER EGGS
   ============================================================ */

/* Toast notification (bottom-left, mono) */
.toast {
  position: fixed;
  bottom: calc(var(--hud-h) + 16px);
  left: 24px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  padding: 10px 14px;
  border-left: 3px solid var(--signal);
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateY(8px);
  opacity: 0;
  transition: opacity 0.3s ease, transform 0.3s ease;
  max-width: 320px;
  box-shadow: 4px 4px 0 var(--rule);
}
.toast.in { opacity: 1; transform: none; }
.toast .badge {
  font-family: var(--font-mono);
  font-size: 9px;
  background: var(--signal);
  color: #fff;
  padding: 2px 6px;
  letter-spacing: 0.1em;
}

/* Help overlay (?) */
.help-overlay {
  position: fixed;
  inset: 0;
  background: color-mix(in oklab, var(--paper) 92%, transparent);
  backdrop-filter: blur(8px);
  z-index: 300;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.help-overlay.open { display: flex; }
.help-card {
  width: 100%;
  max-width: 640px;
  background: var(--paper);
  border: 1px solid var(--ink);
  box-shadow: 8px 8px 0 var(--ink);
  position: relative;
}
.help-head {
  padding: 16px 22px;
  border-bottom: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 500;
}
.help-head .close {
  background: transparent;
  border: 0;
  color: var(--ink);
  font-size: 20px;
  cursor: pointer;
  line-height: 1;
}
.help-body { padding: 22px; }
.help-body h3 {
  font-family: var(--font-display);
  font-size: 26px;
  letter-spacing: -0.025em;
  margin: 0 0 16px;
  font-weight: 500;
}
.help-body p {
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  margin: 0 0 14px;
}
.help-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px 24px;
  margin: 14px 0 6px;
}
.help-grid .kv {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--rule);
}
.help-grid .kv .k {
  color: var(--ink-2);
  letter-spacing: 0.02em;
}
.help-grid .kv kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding: 2px 6px;
  color: var(--ink);
  letter-spacing: 0.06em;
  border-radius: 2px;
  font-weight: 500;
}
.help-grid .kv kbd + kbd { margin-left: 4px; }
.help-foot {
  padding: 12px 22px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* Blueprint mode (Konami activated) */
html.blueprint {
  --paper: #0a2540;
  --paper-2: #133057;
  --paper-3: #1a3c69;
  --ink: #e6f1ff;
  --ink-2: #a8c6ee;
  --ink-3: #6c92c4;
  --ink-4: #3d5a82;
  --rule: #2c4773;
  --rule-2: #1a3055;
  --signal: #ffd166;
  --signal-2: #ffc94d;
  --signal-soft: rgba(255, 209, 102, 0.14);

  /* ---- spotlight ---- */
  --spotlight-color-1: rgba(255, 209, 102, 0.2);
  --spotlight-color-2: rgba(26, 60, 105, 0.4);
  --spotlight-color-3: rgba(230, 241, 255, 0.1);
}
html.blueprint::before {
  content: "BLUEPRINT";
  position: fixed;
  bottom: calc(var(--hud-h) + 10px);
  left: 16px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--signal);
  background: rgba(10, 37, 64, 0.85);
  padding: 4px 10px;
  z-index: 999;
  border: 1px solid var(--signal);
  pointer-events: none;
}

/* Matrix overlay */
.matrix-overlay {
  position: fixed;
  inset: 0;
  z-index: 250;
  background: rgba(0, 0, 0, 0.85);
  pointer-events: none;
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 14px;
  color: #2bff8a;
  display: none;
}
.matrix-overlay.on { display: block; }
.matrix-overlay .col {
  position: absolute;
  top: -20%;
  white-space: pre;
  line-height: 1.1;
  text-shadow: 0 0 4px #2bff8a;
  animation: matrixFall 4s linear forwards;
  opacity: 0.9;
}
@keyframes matrixFall {
  to { transform: translateY(140vh); opacity: 0; }
}

/* Robot mascot */
.mascot {
  position: fixed;
  bottom: calc(var(--hud-h) + 24px);
  right: 24px;
  z-index: 90;
  background: var(--paper);
  border: 1px solid var(--ink);
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink);
  letter-spacing: 0.04em;
  box-shadow: 4px 4px 0 var(--ink);
  display: none;
  align-items: center;
  gap: 8px;
}
.mascot.show { display: inline-flex; animation: mascotIn 0.4s ease forwards; }
@keyframes mascotIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}
.mascot .face {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px; height: 22px;
  border: 1px solid var(--signal);
  position: relative;
}
.mascot .face::before,
.mascot .face::after {
  content: "";
  position: absolute;
  width: 4px; height: 4px;
  background: var(--signal);
  border-radius: 50%;
  top: 7px;
  animation: blinkEyes 3s ease-in-out infinite;
}
.mascot .face::before { left: 4px; }
.mascot .face::after { right: 4px; }
@keyframes blinkEyes {
  0%, 92%, 100% { transform: scaleY(1); }
  94% { transform: scaleY(0.1); }
}



/* ============================================================
   3D TILT CARDS
   ============================================================ */
.tilt {
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}
.tilt .tilt-inner {
  transform-style: preserve-3d;
  transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ============================================================
   GLITCH HOVER — toned down to a tiny shift, no RGB chaos
   ============================================================ */
.glitch {
  position: relative;
  display: inline-block;
  transition: color 0.25s ease, transform 0.25s ease;
}
.glitch:hover { color: var(--signal); }
.glitch::before, .glitch::after { display: none; }

/* ============================================================
   ANIMATED SECTION DIVIDER (gets drawn in on scroll)
   ============================================================ */
.section-head {
  position: relative;
}
.section-head::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--signal);
  transition: width 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.2s;
}
.section-head.in::after { width: 80px; }

/* ============================================================
   BOOT SPLASH (very brief, dismissable)
   ============================================================ */
.boot {
  position: fixed;
  inset: 0;
  background: var(--paper);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  transition: opacity 0.5s ease, visibility 0s 0.5s;
}
.boot.gone { opacity: 0; visibility: hidden; }
.boot .boot-inner {
  display: flex;
  flex-direction: column;
  gap: 12px;
  text-align: center;
}
.boot .boot-bar {
  width: 200px;
  height: 1px;
  background: var(--rule);
  position: relative;
  margin: 8px auto 4px;
  overflow: hidden;
}
.boot .boot-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--signal);
  transform: translateX(-100%);
  animation: bootBar 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}
@keyframes bootBar {
  to { transform: translateX(0); }
}
.boot .boot-lines {
  font-size: 10px;
  color: var(--ink-3);
  display: flex;
  gap: 8px;
  justify-content: center;
  letter-spacing: 0.12em;
}
.boot .boot-lines span:nth-child(2) { color: var(--signal); }

/* ============================================================
   GRID SCROLL HIGHLIGHT (signal beam follows cursor near top)
   ============================================================ */
body::before {
  content: "";
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: 
    radial-gradient(400px circle at var(--mx, 50%) var(--my, 50%), var(--spotlight-color-1) 0%, transparent 100%),
    radial-gradient(600px circle at calc(var(--mx, 50%) - 80px) calc(var(--my, 50%) + 50px), var(--spotlight-color-2) 0%, transparent 100%),
    radial-gradient(500px circle at calc(var(--mx, 50%) + 100px) calc(var(--my, 50%) - 60px), var(--spotlight-color-3) 0%, transparent 100%);
  opacity: 0.85;
  pointer-events: none;
  z-index: 0;
  filter: blur(50px);
  transition: opacity 0.5s ease;
}

body.no-grid { background-image: none !important; }

/* ============================================================
   PORTRAIT IMAGE
   ============================================================ */
.portrait-img {
  transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}
.portrait-img:hover { transform: scale(1.04); }
html[data-theme="dark"] .portrait-img {
  filter: brightness(0.92) contrast(1.05);
}

/* ============================================================
   PROJECT CARD — signal side accent on hover
   ============================================================ */
.proj.layout-notebook { position: relative; }
.proj.layout-notebook::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--signal);
  transform: scaleY(0);
  transform-origin: bottom center;
  transition: transform 0.38s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}
.proj.layout-notebook:hover::before { transform: scaleY(1); }



/* ticker row hover */
.ticker-row .cell { cursor: default; transition: background 0.2s ease; }
.ticker-row .cell:hover { background: var(--paper-2); }

/* smooth theme transitions */
body, .nav, .hud, .profile, .now-box, .proj, .skills-col {
  transition: background 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* ============================================================
   HERO RADIAL GLOW — subtle warm backdrop
   ============================================================ */
.hero {
  position: relative;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse 70% 60% at 65% 50%, var(--signal-soft), transparent 70%);
  z-index: -1;
}
/* no > * rule needed — ::after sits behind content naturally */

/* ============================================================
   PROJECT THUMB — image reveal + overlay on hover
   ============================================================ */
.proj-thumb {
  overflow: hidden;
}
.proj-thumb .thumb-schematic {
  transition: transform 0.5s cubic-bezier(0.22, 1, 0.36, 1);
}
.proj:hover .proj-thumb .thumb-schematic {
  transform: scale(1.04);
}

/* section-head: position/overflow consolidated into main .section-head rule */

/* ============================================================
   ABOUT TWO-COL — portrait border glow on hover
   ============================================================ */
.two-col aside img {
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.two-col aside:hover img {
  border-color: var(--signal) !important;
  box-shadow: 0 0 0 2px var(--signal-soft);
}

/* EXP ITEM HOVER — now handled in the redesign block above */

/* ============================================================
   NOW BOX PROGRESS LABELS — live counter feel
   ============================================================ */
.progress-item .top b {
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

/* ============================================================
   CHIP HOVER STATES — all chip types
   ============================================================ */
.chip, .chip-pred, .chip-freq {
  cursor: pointer;
}

/* ============================================================
   MARQUEE — faster, signal dots
   ============================================================ */
.marquee-track .dot {
  width: 5px;
  height: 5px;
  background: var(--signal);
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
  opacity: 0.7;
}

/* ============================================================
   NAV ACTIVE INDICATOR — pill background
   ============================================================ */
.nav-links a.active {
  background: var(--paper-2);
  border: 1px solid var(--rule);
  padding-left: 22px;
  padding-right: 14px;
}

/* ============================================================
   HUD — signal flash on section change
   ============================================================ */
.hud [data-hud-section] {
  transition: opacity 0.25s ease;
}

/* ============================================================
   REVEAL — stagger children of data-reveal-stagger
   ============================================================ */
[data-reveal-stagger] > * {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.5s cubic-bezier(0.22,1,0.36,1), transform 0.5s cubic-bezier(0.22,1,0.36,1);
}
[data-reveal-stagger].in > *:nth-child(1) { animation: staggerIn 0.5s 0.0s cubic-bezier(0.22,1,0.36,1) forwards; }
[data-reveal-stagger].in > *:nth-child(2) { animation: staggerIn 0.5s 0.07s cubic-bezier(0.22,1,0.36,1) forwards; }
[data-reveal-stagger].in > *:nth-child(3) { animation: staggerIn 0.5s 0.14s cubic-bezier(0.22,1,0.36,1) forwards; }
[data-reveal-stagger].in > *:nth-child(4) { animation: staggerIn 0.5s 0.21s cubic-bezier(0.22,1,0.36,1) forwards; }
@keyframes staggerIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: none; }
}

/* ============================================================
   SKILLS COLUMN — bar-graph visual on li items
   ============================================================ */
.skills-col ul li {
  position: relative;
  transition: padding-left 0.2s ease, color 0.2s ease;
}
.skills-col ul li:hover { padding-left: 28px; }
.skills-col ul li::before {
  transition: color 0.2s ease;
}
.skills-col ul li:hover::before { color: var(--signal); }
.skills-col ul li:hover b { color: var(--signal); }

@keyframes logoSpinForever {
  to { transform: rotate(360deg); }
}

/* Coord readout — frozen state */
.coord.frozen span { color: var(--signal); }
.coord.frozen span b { color: var(--signal); }

/* ============================================================
   FLOATING SECTION RAIL (right side, fixed)
   ============================================================ */
.rail {
  position: fixed;
  top: 50%;
  right: 24px;
  transform: translateY(-50%);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  pointer-events: auto;
}
.rail a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 8px 6px 0;
  color: var(--ink-3);
  position: relative;
  font-weight: 500;
  transition: color 0.2s, padding-right 0.2s;
  text-align: right;
  justify-content: flex-end;
}
.rail a .label {
  opacity: 0;
  transform: translateX(8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.rail a:hover .label,
.rail a.active .label {
  opacity: 1;
  transform: translateX(0);
}
.rail a .dot {
  width: 6px;
  height: 6px;
  border: 1px solid var(--ink-3);
  background: transparent;
  border-radius: 50%;
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.rail a:hover .dot { border-color: var(--ink); }
.rail a.active { color: var(--signal); padding-right: 4px; }
.rail a.active .dot {
  background: var(--signal);
  border-color: var(--signal);
  box-shadow: 0 0 8px var(--signal);
  transform: scale(1.2);
}
@media (max-width: 1100px) { .rail { display: none; } }

/* ============================================================
   PROFILE / VITAL STATS CARD
   ============================================================ */
.profile {
  margin: 0 0 80px;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--paper-2);
  display: grid;
  grid-template-columns: 280px 1fr;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.01);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.4s ease, background 0.4s ease;
}
.profile:hover {
  transform: translateY(-4px);
  border-color: var(--signal);
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper-2) 75%);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05), 0 0 1px rgba(0, 0, 0, 0.1);
}
html[data-theme="dark"] .profile {
  box-shadow: 0 4px 24px rgba(0,0,0,0.15), 0 1px 2px rgba(0,0,0,0.1);
}
html[data-theme="dark"] .profile:hover {
  background: radial-gradient(circle at top right, var(--signal-soft), var(--paper-2) 75%);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), 0 0 1px rgba(255, 255, 255, 0.1);
}
.profile::before,
.profile::after {
  content: "";
  position: absolute;
  background: var(--signal);
  z-index: 1;
}
.profile::before { top: -1px; left: -1px; width: 28px; height: 1px; border-top-left-radius: 12px; }
.profile::after { top: -1px; left: -1px; width: 1px; height: 28px; border-top-left-radius: 12px; }
.profile-photo {
  position: relative;
  background: var(--paper-3);
  border-right: 1px solid var(--rule);
  overflow: hidden;
  min-height: 280px;
}
.profile-photo .ph-corner {
  position: absolute;
  bottom: 14px;
  right: 16px;
  width: 24px; height: 24px;
  border-right: 1px solid var(--ink-3);
  border-bottom: 1px solid var(--ink-3);
}

.profile-data {
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.profile-data .row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 24px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--rule);
  align-items: baseline;
}
.profile-data .row:last-child { border-bottom: 0; padding-bottom: 0; }
.profile-data .k {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
}
.profile-data .v {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: -0.015em;
  color: var(--ink);
  font-weight: 500;
}
.profile-data .v .mono-sub {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  font-weight: 400;
  margin-top: 2px;
}
.profile-data .v .chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--rule);
  color: var(--ink-2);
  background: var(--paper);
  font-weight: 500;
  transition: color 0.18s, border-color 0.18s;
}
.chip:hover { color: var(--signal); border-color: var(--signal); }
.chip.signal { color: var(--signal); border-color: var(--signal); background: transparent; }

/* clickable predicted-grade 3D mechanical card */
.grade-card {
  perspective: 1000px;
  cursor: pointer;
  display: inline-block;
  height: 28px;
  position: relative;
}
.grade-card .card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.grade-card.flipped .card-inner {
  transform: rotateY(180deg);
}
.grade-card .card-front,
.grade-card .card-back {
  backface-visibility: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
  border-radius: 4px;
  white-space: nowrap;
}
.grade-card .card-front {
  position: relative; /* defines parent width naturally */
  padding: 5px 12px;
  border: 1px solid var(--rule);
  background: var(--paper-2);
  color: var(--ink-2);
  transition: border-color 0.25s, background 0.25s, color 0.25s;
}
.grade-card:hover .card-front {
  border-color: var(--ink-3);
  color: var(--ink);
  background: var(--paper-3);
}
.grade-card .card-back {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border: 1px solid var(--signal);
  background: var(--signal-soft);
  color: var(--signal);
  transform: rotateY(180deg);
  font-weight: 700;
  font-size: 11px;
}
@media (max-width: 900px) {
  .profile { grid-template-columns: 1fr; }
  .profile-photo { aspect-ratio: 3/4; border-right: 0; border-bottom: 1px solid var(--rule); }
  .profile-data .row { grid-template-columns: 1fr; gap: 6px; }
}

/* ============================================================
   EXPERIENCE / TRACK RECORD — full redesign
   ============================================================ */
.exp-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.exp-col {
  padding: 36px 0;
  border-right: 1px solid var(--rule);
  padding-right: 32px;
}
.exp-col:not(:first-child) { padding-left: 32px; }
.exp-col:last-child { border-right: 0; }

.exp-col .col-head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 28px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
}
.exp-col .col-head::before {
  content: "";
  width: 20px; height: 1px;
  background: var(--signal);
  flex-shrink: 0;
}

.exp-item {
  /* Left border stays, just changes color — no layout shift ever */
  border-left: 2px solid transparent;
  padding: 20px 0 20px 16px;
  margin-left: -18px;
  border-top: 1px solid var(--rule-2);
  transition: border-color 0.25s ease, background 0.25s ease;
  position: relative;
}
.exp-item:first-of-type { border-top: 0; padding-top: 0; }
.exp-item:hover {
  border-left-color: var(--signal);
  background: var(--signal-soft);
}
/* remove old ::before that causes overflow */
.exp-item::before { display: none; }

.exp-item .when {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--ink-3);
  text-transform: uppercase;
  font-weight: 500;
  margin-bottom: 6px;
  display: block;
}
.exp-item .what {
  font-family: var(--font-display);
  font-size: 17px;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 4px;
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
  line-height: 1.3;
}
.exp-item .where {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-2);
  letter-spacing: 0.02em;
  margin-bottom: 12px;
}
.exp-item .where b { color: var(--ink); font-weight: 500; }
.exp-item .took {
  font-size: 12px;
  color: var(--ink-2);
  line-height: 1.7;
  font-family: var(--font-mono);
}
.exp-item .took ul {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.exp-item .took ul li {
  padding-left: 16px;
  position: relative;
  font-size: 12px;
  line-height: 1.6;
}
.exp-item .took ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--signal);
  display: block;
}

@media (max-width: 900px) {
  .exp-grid { grid-template-columns: 1fr; }
  .exp-col { border-right: 0; border-bottom: 1px solid var(--rule); padding: 28px 0; }
  .exp-col:not(:first-child) { padding-left: 0; }
  .exp-item { margin-left: 0; }
}

/* ============================================================
   SKILLS GRID — three columns
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.skills-col {
  padding: 28px 28px 28px 0;
  border-right: 1px solid var(--rule);
}
.skills-col:last-child { border-right: 0; padding-right: 0; }
.skills-col:not(:first-child) { padding-left: 28px; }
.skills-col .col-head {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 20px;
  font-weight: 500;
}
.skills-col .col-head .num {
  color: var(--signal);
  margin-right: 8px;
}
.skills-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.skills-col ul li {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-2);
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--rule);
}
.skills-col ul li:last-child { border-bottom: 0; }
.skills-col ul li::before {
  content: "→";
  color: var(--signal);
  font-size: 12px;
}
.skills-col ul li b { color: var(--ink); font-weight: 500; margin-right: 6px; }
.skills-col ul li .sub {
  font-size: 11px;
  color: var(--ink-3);
  margin-left: auto;
  letter-spacing: 0.04em;
}
@media (max-width: 900px) {
  .skills-grid { grid-template-columns: 1fr; }
  .skills-col { border-right: 0; border-bottom: 1px solid var(--rule); padding: 20px 0; }
}

/* ============================================================
   ANIMATED SVG SCHEMATIC PARTS (hover-driven)
   ============================================================ */
.thumb-schematic .spin {
  transform-origin: var(--ox, 50%) var(--oy, 50%);
  transform-box: fill-box;
}
.proj:hover .thumb-schematic .spin {
  animation: schSpin 5s linear infinite;
}
@keyframes schSpin {
  to { transform: rotate(360deg); }
}

.thumb-schematic .swing {
  transform-origin: var(--ox, 50%) var(--oy, 50%);
  transform-box: fill-box;
}
.proj:hover .thumb-schematic .swing {
  animation: schSwing 3.4s ease-in-out infinite alternate;
}
@keyframes schSwing {
  from { transform: rotate(-10deg); }
  to { transform: rotate(10deg); }
}

.thumb-schematic .roll {
  transform-origin: 50% 50%;
  transform-box: fill-box;
}
.proj:hover .thumb-schematic .roll {
  animation: schRoll 2.6s linear infinite;
}
@keyframes schRoll {
  to { transform: rotate(360deg); }
}

.thumb-schematic .pulse-out {
  transform-origin: var(--ox, 50%) var(--oy, 50%);
  transform-box: fill-box;
  opacity: 0.45;
}
.proj:hover .thumb-schematic .pulse-out {
  animation: schPulse 2.8s ease-in-out infinite;
}
@keyframes schPulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.9; }
}

.thumb-schematic .blink {
  opacity: 0.5;
}
.proj:hover .thumb-schematic .blink {
  animation: schBlink 1.6s ease-in-out infinite;
}
@keyframes schBlink {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.thumb-schematic .bob {
  transform-box: fill-box;
}
.proj:hover .thumb-schematic .bob {
  animation: schBob 3s ease-in-out infinite;
}
@keyframes schBob {
  0%, 100% { transform: translateY(-0.3px); }
  50% { transform: translateY(0.3px); }
}

/* slats: subtle raise on hover (blinds opening) */
.thumb-schematic .slats {
  transform-box: fill-box;
  transition: transform 0.4s ease;
}
.proj:hover .thumb-schematic .slats {
  animation: slatsRaise 3.2s ease-in-out infinite alternate;
}
@keyframes slatsRaise {
  from { transform: translateY(0); }
  to { transform: translateY(-6px); }
}

/* rocker paddle: snaps between ON (top) and OFF (bottom) like a real switch */
.thumb-schematic .rocker-toggle {
  transform-box: fill-box;
}
.proj:hover .thumb-schematic .rocker-toggle {
  animation: switchToggle 2.4s steps(1, end) infinite alternate;
}
@keyframes switchToggle {
  from { transform: translateY(0); }
  to { transform: translateY(20px); }
}

/* ============================================================
   PERSONAL TICKER (under hero)
   ============================================================ */
.ticker-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--rule);
  margin-top: 48px;
  background: var(--paper);
}
.ticker-row .cell {
  padding: 18px 20px;
  border-right: 1px solid var(--rule);
  font-family: var(--font-mono);
  position: relative;
}
.ticker-row .cell:last-child { border-right: 0; }
.ticker-row .cell .k {
  font-size: 9px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 8px;
  display: block;
}
.ticker-row .cell .v {
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -0.02em;
  color: var(--ink);
  font-weight: 500;
}
.ticker-row .cell .v .unit {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0;
  margin-left: 4px;
}
@media (max-width: 900px) {
  .ticker-row { grid-template-columns: repeat(2, 1fr); }
  .ticker-row .cell:nth-child(2) { border-right: 0; }
  .ticker-row .cell:nth-child(-n+2) { border-bottom: 1px solid var(--rule); }
}

/* ============================================================
   LARGE FADED SECTION COUNTER NUMBERS
   ============================================================ */
.page { counter-reset: gs-section; }
.section { counter-increment: gs-section; }
.section::before {
  content: "0" counter(gs-section);
  position: absolute;
  right: 0;
  top: 48px;
  font-family: var(--font-display);
  font-size: clamp(72px, 12vw, 160px);
  font-weight: 700;
  color: var(--rule-2);
  line-height: 0.85;
  letter-spacing: -0.06em;
  pointer-events: none;
  user-select: none;
  z-index: 0;
  transition: color 0.3s ease;
}
.section > * { position: relative; z-index: 1; }
html[data-theme="dark"] .section::before { opacity: 0.5; }

/* hero scan-line removed */

/* ============================================================
   PROJECT CARD ENTRANCE STAGGER
   ============================================================ */
@keyframes cardSlideIn {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}
.proj.layout-notebook.anim-in,
.proj.layout-spec.anim-in {
  animation: cardSlideIn 0.65s cubic-bezier(0.22,1,0.36,1) forwards;
}
.proj.layout-notebook.anim-in:nth-child(2),
.proj.layout-spec.anim-in:nth-child(2) { animation-delay: 0.1s; }
.proj.layout-notebook.anim-in:nth-child(3),
.proj.layout-spec.anim-in:nth-child(3) { animation-delay: 0.2s; }

/* ============================================================
   SKILL ITEMS — border-left reveal (no layout shift)
   ============================================================ */
.skills-col ul li {
  border-left: 2px solid transparent;
  padding-left: 12px;
  margin-left: -14px;
  transition: border-color 0.25s ease, background 0.25s ease;
}
.skills-col ul li:hover {
  border-left-color: var(--signal);
  background: var(--signal-soft);
}

/* ============================================================
   PROGRESS FILL SHIMMER
   ============================================================ */
.progress-bar { overflow: hidden; }
.progress-bar .fill {
  position: relative;
  overflow: hidden;
}
.progress-bar .fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.35) 50%, transparent 100%);
  animation: shimmer 2.4s ease-in-out infinite;
  transform: translateX(-100%);
}
@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(200%); }
}

/* ============================================================
   PROFILE DATA ROWS — hover highlight
   ============================================================ */
.profile-data .row {
  transition: background 0.2s ease, padding-left 0.2s ease;
  border-left: 2px solid transparent;
  padding-left: 8px;
  margin-left: -10px;
}
.profile-data .row:hover {
  background: var(--signal-soft);
  border-left-color: var(--signal);
}

/* ============================================================
   CONTACT — bigger, bolder heading
   ============================================================ */
.contact-grid h2 {
  font-size: clamp(36px, 5.5vw, 72px);
  letter-spacing: -0.04em;
  line-height: 0.97;
}

/* ============================================================
   FOOTER — soft opacity
   ============================================================ */
.footer { transition: opacity 0.2s ease; opacity: 0.75; }
.footer:hover { opacity: 1; }

/* ============================================================
   MARQUEE — calmer pace
   ============================================================ */
.marquee { --marquee-duration: 80s; }

/* ============================================================
   HERO STATS — stronger number weight
   ============================================================ */
.ticker-row .cell .v { font-size: 28px; font-weight: 600; }

/* ============================================================
   CUSTOM SCROLLBAR — thin, on-brand
   ============================================================ */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--rule); }
::-webkit-scrollbar-thumb:hover { background: var(--signal); }

.grade-card:active { transform: scale(0.97); }

/* ============================================================
   BTN — stronger hover lift with signal bloom
   ============================================================ */
.btn:hover {
  box-shadow: 5px 5px 0 var(--rule), 0 0 12px var(--signal-soft);
  transform: translate(-1px, -1px);
}

/* ============================================================
   NAV — scrolled state (add shadow)
   ============================================================ */
.nav.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.06);
}
html[data-theme="dark"] .nav.scrolled {
  box-shadow: 0 2px 16px rgba(0,0,0,0.25);
}

/* ============================================================
   SECTION HEAD LINE — signal draw animates from 0 → 80px
   ============================================================ */
.section-head::after {
  transition: width 1s cubic-bezier(0.22,1,0.36,1) 0.15s;
}
.section-head.in::after { width: 64px; }

/* ============================================================
   HERO DECODE LINE — signal word glows faintly
   ============================================================ */
.decode-line.signal .decode {
  text-shadow: 0 0 24px var(--signal-soft);
}

/* ============================================================
   MARQUEE — dots pulse
   ============================================================ */
.marquee-track .dot {
  animation: dotPulse 3.5s ease-in-out infinite;
}
.marquee-track span:nth-child(2) .dot { animation-delay: 0.6s; }
.marquee-track span:nth-child(3) .dot { animation-delay: 1.2s; }
.marquee-track span:nth-child(4) .dot { animation-delay: 1.8s; }
.marquee-track span:nth-child(5) .dot { animation-delay: 2.4s; }
.marquee-track span:nth-child(6) .dot { animation-delay: 3.0s; }
@keyframes dotPulse {
  0%, 100% { transform: scale(1);   opacity: 0.7; }
  50%       { transform: scale(1.5); opacity: 1; }
}

/* ============================================================
   NOW BOX LIVE DOT — stronger pulse
   ============================================================ */
.live-dot {
  box-shadow: 0 0 0 2px transparent;
  transition: box-shadow 0.4s ease;
}
.live-dot:hover { box-shadow: 0 0 0 4px var(--signal-soft); }

/* ============================================================
   SECTION HEAD — faded counter only shows in wide viewport
   ============================================================ */
@media (max-width: 900px) {
  .section::before { display: none; }
}

/* ============================================================
   CONTACT LIST — bigger row height for breathing room
   ============================================================ */
.contact-list a {
  font-size: 17px;
  padding: 20px 0;
}

/* ============================================================
   TICKER CELL — left border accent on hover
   ============================================================ */
.ticker-row .cell {
  border-left: 2px solid transparent;
  transition: background 0.2s ease, border-color 0.2s ease;
}
.ticker-row .cell:hover {
  border-left-color: var(--signal);
}

/* ============================================================
   HUD — monospace clarity
   ============================================================ */
.hud { letter-spacing: 0.08em; }

/* ============================================================
   NAV MARK — name hover
   ============================================================ */
.nav-mark {
  transition: color 0.2s ease;
}

/* ============================================================
   PROFILE PHOTO CORNER ACCENT — signal
   ============================================================ */
.ph-corner {
  border-color: var(--signal);
}

/* ============================================================
   DETAIL PAGE SPEC TABLE — cell hover
   ============================================================ */
.spec-table .cell {
  transition: background 0.2s ease;
  padding-left: 12px;
}
.spec-table .cell:hover { background: var(--paper-2); }

/* ============================================================
   ABOUT BODY — paragraph spacing
   ============================================================ */
.two-col .body { gap: 22px; }
.two-col .body p { line-height: 1.82; }

/* ============================================================
   TEXT SELECTABILITY LIMITS & TOGGLE SWITCH
   ============================================================ */
/* By default, lock text selectability to keep blueprint feel */
html, body {
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* Dynamically enable selectability when toggle is checked */
html.selection-enabled, html.selection-enabled body {
  user-select: text !important;
  -webkit-user-select: text !important;
  -moz-user-select: text !important;
  -ms-user-select: text !important;
}

/* Enable selection for code snippets, shortcuts, inputs, and interactive values */
input, textarea, kbd, code, pre, .pin, .formula, .spec-table .cell .v, .wiring-table td, .comp-table td {
  user-select: text;
  -webkit-user-select: text;
}

/* Switch Toggle layout in Help Overlay */
.kv.selectability-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--rule);
}

.switch-toggle {
  position: relative;
  display: inline-block;
  width: 38px;
  height: 20px;
  margin-left: auto;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-toggle .slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--rule-2);
  transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 20px;
  border: 1px solid var(--rule);
}

.switch-toggle .slider::before {
  position: absolute;
  content: "";
  height: 12px;
  width: 12px;
  left: 3px;
  bottom: 3px;
  background-color: var(--paper);
  transition: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.switch-toggle input:checked + .slider {
  background-color: var(--signal);
  border-color: var(--signal);
}

.switch-toggle input:checked + .slider::before {
  transform: translateX(18px);
  background-color: var(--paper);
}

/* ============================================================
   POLISH PASS — v3
   "Coming soon" placeholders, perf hints, motion choreography,
   responsive refinements and stricter prefers-reduced-motion.
   ============================================================ */

/* --- "Coming soon" pill for placeholder project actions --- */
.proj.layout-spec .proj-links .proj-link-soon,
.proj.layout-notebook .proj-links .proj-link-soon {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 500;
  padding: 2px 6px 2px 0;
  border-left: 1px dashed var(--rule);
  padding-left: 12px;
  user-select: none;
}

/* --- Contact list "soon" placeholder (non-link, no broken tabs) --- */
.contact-list .contact-soon {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 17px;
  letter-spacing: 0.02em;
  cursor: default;
  user-select: none;
}

.contact-list .contact-soon .arrow {
  color: var(--ink-4);
}

/* --- Project card visual smoothing & GPU hints --- */
.proj.layout-spec,
.proj.layout-notebook,
.now-box,
.profile,
.wip-card {
  will-change: transform;
}

/* --- Tighter hero radial glow on smaller screens --- */
@media (max-width: 640px) {
  .hero::after {
    background: radial-gradient(ellipse 90% 50% at 50% 40%, var(--signal-soft), transparent 70%);
  }
}

/* --- Improve the hero coord readout on smaller widths --- */
@media (max-width: 900px) {
  .coord {
    top: 12px;
    right: 16px;
    font-size: 9px;
    gap: 10px;
  }
}

/* --- Section counter cleanup: stop counter from clipping nav on mobile --- */
@media (max-width: 640px) {
  .section { padding-top: 48px; }
  .section::before { display: none; }
}

/* --- HUD: extra safety so it never overlaps content on small screens --- */
@media (max-width: 640px) {
  body { padding-bottom: 0 !important; }
}

/* --- Help overlay: tighter on mobile + accessible focus --- */
.help-overlay .help-card {
  transform: scale(0.96);
  opacity: 0;
  transition: transform 0.36s cubic-bezier(0.22, 1, 0.36, 1), opacity 0.28s ease;
}
.help-overlay.open .help-card {
  transform: scale(1);
  opacity: 1;
}

/* --- Tweaks panel: gentler entrance, no scrollbar pop --- */
.tweaks { transform-origin: bottom right; }

/* --- Custom focus rings (accessibility) --- */
:where(a, button, input, [tabindex]):focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
  border-radius: 2px;
}

/* --- Smarter image rendering --- */
img { max-width: 100%; height: auto; }

/* --- Performance: long sections only render when in view --- */
@supports (content-visibility: auto) {
  #track,
  #skills,
  #work {
    content-visibility: auto;
    contain-intrinsic-size: 1px 1200px;
  }
}

/* --- Marquee: respect prefers-reduced-motion --- */
@media (prefers-reduced-motion: reduce) {
  .marquee-track { animation: none !important; }
  .progress-bar .fill::after { animation: none !important; }
  .marquee-track .dot { animation: none !important; }
  .live-dot,
  .wip-dot,
  .status-pill.wip::before,
  .hud .cell .live::before { animation: none !important; }
  body::before { opacity: 0.3 !important; }
}

/* --- Tighter spacing on very narrow viewports --- */
@media (max-width: 380px) {
  :root { --gutter: 14px; }
  .nav-inner { padding: 10px 12px; gap: 6px; }
  .nav-mark { font-size: 12px; }
  .btn { padding: 11px 14px; font-size: 10px; }
  .ticker-row { grid-template-columns: 1fr; }
  .ticker-row .cell:not(:last-child) { border-bottom: 1px solid var(--rule); border-right: 0; }
  .spec-table { grid-template-columns: 1fr; }
  .spec-table .cell { border-right: 0; border-bottom: 1px solid var(--rule); }
  .spec-table .cell:last-child { border-bottom: 0; }
}

/* --- Print: tidy, dark text on white --- */
@media print {
  body::before,
  .hud,
  .tweaks,
  .help-overlay,
  .scroll-progress,
  .marquee,
  .nav { display: none !important; }
  body { padding-bottom: 0 !important; background: #fff !important; color: #000 !important; }
  a { color: #000 !important; text-decoration: underline; }
  .section { page-break-inside: avoid; }
}

/* --- Subtle theme transition lock to avoid flash --- */
html { color-scheme: light dark; }

/* --- Better wrapping for long names in profile chips --- */
.grade-card { max-width: 100%; }
.profile-data .v .chips { row-gap: 6px; }