/* KJ-SLD-01 — Direction 11: SINGLE-LINE */

:root {
  --field:   #0A0D12;
  --panel:   #0F1218;
  --line:    #1B2029;
  --wire:    #334052;
  --ink:     #E9ECF1;
  --body:    #9AA4B2;
  --muted:   #8C96A6;
  --signal:  #4DA3FF;
  --ok:      #34D399;

  --sans: 'Inter Tight', 'Segoe UI', 'Helvetica Neue', sans-serif;
  --mono: 'IBM Plex Mono', 'Courier New', monospace;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--field);
  color: var(--body);
  font: 400 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

.wrap { max-width: 1150px; margin: 0 auto; padding: 0 24px; }

a { color: inherit; }

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--signal); color: var(--field);
  font: 400 13.5px var(--mono); padding: 10px 16px; z-index: 100;
}
.skip:focus { left: 12px; top: 12px; }

/* ---------- TYPE ---------- */

h1 {
  font-weight: 500;
  font-size: clamp(34px, 4.4vw, 58px);
  letter-spacing: -0.01em;
  line-height: 1.14;
  color: var(--ink);
  margin: 0 0 20px;
}

h2 {
  font-weight: 500;
  font-size: clamp(26px, 3.2vw, 42px);
  letter-spacing: -0.005em;
  line-height: 1.2;
  color: var(--ink);
  margin: 0 0 28px;
}

h3 {
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
  color: var(--ink);
  margin: 0;
}

p { margin: 0 0 16px; }

.accent { color: var(--signal); }

.tag {
  font: 500 11px var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 14px;
}

.kicker {
  font: 400 12px var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 22px;
}

.lede { color: var(--body); max-width: 56ch; }

.prose { max-width: 62ch; }

.pull {
  font: 500 12px var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 28px 0 0;
}

.note { font: 400 12px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 18px 0 0; }

.tk { color: var(--muted); font-family: var(--mono); letter-spacing: .12em; }

.sep { color: var(--signal); }

/* ---------- NAV ---------- */

.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10,13,18,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav-inner {
  max-width: 1150px; margin: 0 auto; padding: 14px 24px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}

.wordmark {
  font: 600 14px var(--sans);
  letter-spacing: .02em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.wordmark .doc {
  font: 400 11px var(--mono);
  letter-spacing: .16em;
  color: var(--muted);
  margin-left: 10px;
}

.navlinks { display: flex; align-items: center; gap: 22px; }
.navlinks a {
  font: 400 12px var(--mono);
  letter-spacing: .14em;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease-out;
}
.navlinks a:hover { color: var(--ink); }
.navlinks a.btn-primary { color: var(--field); }

.menu-toggle {
  display: none;
  background: none; border: 1px solid var(--line); border-radius: 10px;
  color: var(--ink); font: 400 12px var(--mono); letter-spacing: .14em;
  padding: 8px 12px; cursor: pointer;
}

/* ---------- BUTTONS & LINKS ---------- */

.btn {
  display: inline-block;
  font: 400 13.5px var(--mono);
  letter-spacing: .02em;
  border-radius: 10px;
  padding: 13px 24px;
  text-decoration: none;
  transition: filter .15s ease-out, border-color .2s ease-out;
}
.btn-primary { background: var(--signal); color: var(--field); border: 1px solid var(--signal); }
.btn-primary:hover { filter: brightness(1.1); }
.btn-compact { padding: 8px 16px; font-size: 12px; }

.tlink {
  font: 400 13.5px var(--mono);
  letter-spacing: .02em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: border-color .2s ease-out;
}
.tlink:hover { border-color: var(--signal); }
.tlink .arw { color: var(--signal); margin-right: 6px; }

.cta-row { display: flex; flex-wrap: wrap; gap: 28px; margin-top: 30px; }
.cta-center { justify-content: center; }

/* ---------- SECTIONS ---------- */

.sect { padding: 96px 24px; }
.sect-center { text-align: center; }
.sect-center .lede { margin-left: auto; margin-right: auto; }

.busdiv {
  width: 64px; height: 4px; background: var(--ink);
  margin: 0 auto; position: relative;
}
.busdiv::before, .busdiv::after {
  content: ''; position: absolute; top: -6px; width: 1px; height: 8px; background: var(--wire);
}
.busdiv::before { left: 12px; }
.busdiv::after { right: 12px; }

/* ---------- HERO ---------- */

.hero { position: relative; padding: 88px 0 96px; overflow: hidden; }

.grid-field { position: relative; }
.grid-field::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background-image: linear-gradient(rgba(77,163,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77,163,255,.05) 1px, transparent 1px);
  background-size: 24px 24px;
  -webkit-mask-image: radial-gradient(120% 85% at 50% 0%, #000 25%, transparent 78%);
  mask-image: radial-gradient(120% 85% at 50% 0%, #000 25%, transparent 78%);
}

.hero-grid {
  position: relative;
  display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center;
}

.sld { width: 100%; height: auto; display: block; }
.sld a { cursor: pointer; }
.sld a:hover .lbl.b { fill: var(--ink); }

.lbl { font-family: var(--mono); font-size: 10.5px; letter-spacing: .14em; fill: #8C96A6; }
.lbl.b { fill: #4DA3FF; transition: fill .2s ease-out; }

.flow {
  stroke: #4DA3FF; stroke-width: 2; fill: none; stroke-linecap: round;
  stroke-dasharray: 7 130;
  stroke-dashoffset: 0;
  opacity: 0;
}
@keyframes sflow { to { stroke-dashoffset: -137; } }

/* linework draw-on — energization sequence */
.draw { stroke-dasharray: 700; stroke-dashoffset: 700; }
.energized .draw { animation: sdraw .5s ease-out forwards; }
.energized .d1 { animation-delay: .10s; }
.energized .d2 { animation-delay: .20s; }
.energized .d3 { animation-delay: .30s; }
.energized .d4 { animation-delay: .40s; }
.energized .d5 { animation-delay: .55s; }
.energized .d6 { animation-delay: .62s; }
.energized .d7 { animation-delay: .70s; }
@keyframes sdraw { to { stroke-dashoffset: 0; } }

.energized .flow { opacity: 1; animation: sflow 3s linear infinite; animation-delay: .9s; }
.energized .flow.f2 { animation-delay: 1.4s; }
.energized .flow.f3 { animation-delay: 1.9s; }

/* ---------- STATUS STRIP ---------- */

.strip-wrap { margin-top: 8px; }
.strip {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
  padding: 16px 22px;
  overflow-x: auto;
}
.readout {
  font: 500 12px var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  line-height: 1.9;
  margin: 0;
}
@media (max-width: 920px) {
  .readout { white-space: nowrap; }
}

/* ---------- PANELS ---------- */

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
  padding: 26px;
}

.entry + .entry { margin-top: 20px; }

.entry-head {
  display: flex; flex-wrap: wrap; align-items: center; gap: 14px;
  margin-bottom: 16px;
}

.bul { list-style: none; margin: 0; padding: 0; }
.bul li { position: relative; padding-left: 22px; margin-bottom: 10px; }
.bul li::before { content: '—'; position: absolute; left: 0; color: var(--wire); }
.bul li:last-child { margin-bottom: 0; }

/* ---------- PILLS ---------- */

.pill {
  display: inline-flex; align-items: center; gap: 7px;
  font: 500 11px var(--mono);
  letter-spacing: .14em;
  padding: 4px 10px;
  border-radius: 99px;
  white-space: nowrap;
}
.pill i { width: 6px; height: 6px; border-radius: 99px; background: currentColor; display: block; }
.pill-ok { color: var(--ok); background: rgba(52,211,153,.1); }
.pill-sig { color: var(--signal); background: rgba(77,163,255,.12); }

/* ---------- FEEDER SCHEDULE ---------- */

.minibus { height: 4px; background: var(--ink); width: 120px; margin: -8px 0 8px; }

.feeder {
  display: grid; grid-template-columns: 56px 1fr;
  gap: 24px;
  padding: 30px 12px;
  border-bottom: 1px solid var(--line);
  opacity: 0; transform: translateY(14px);
  transition: background .15s ease-out;
}
.feeder.in {
  opacity: 1; transform: none;
  transition: opacity .45s ease-out, transform .45s ease-out, background .15s ease-out;
}
.feeder:first-child { border-top: 1px solid var(--line); }
.feeder:hover { background: var(--panel); }

.rail { display: flex; flex-direction: column; align-items: center; padding-top: 6px; }
.rail .drop { width: 2px; flex: 1; min-height: 18px; background: var(--wire); }
.rail .brkbox {
  width: 14px; height: 14px;
  border: 2px solid var(--signal);
  background: transparent;
  transition: background .3s ease-out .2s;
  flex: none;
}
.feeder.in .rail .brkbox { background: var(--signal); }

.fbody p { margin: 0 0 12px; }
.fbody p:last-child { margin-bottom: 0; }

.fid {
  font: 500 12px var(--mono);
  letter-spacing: .16em;
  color: var(--muted);
}

.figure { color: var(--ink); }
.figure strong { font-weight: 500; color: var(--signal); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chips span {
  font: 400 11px var(--mono);
  letter-spacing: .14em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 99px;
  padding: 4px 11px;
}

.meta {
  font: 400 11px var(--mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---------- SKILLS TABLE ---------- */

.skills { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0 24px; }

.skhead {
  font: 500 11px var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.skgroup ul { list-style: none; margin: 0; padding: 0; }
.skgroup li {
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  font-size: 15px;
}

/* ---------- AUXILIARY ---------- */

.aux-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }

.lang { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 10px 20px; }
.lang dt { font: 500 11px var(--mono); letter-spacing: .16em; color: var(--muted); align-self: center; }
.lang dd { margin: 0; color: var(--ink); font-size: 15px; }

/* ---------- CONTACT ---------- */

.contact-lines { display: flex; flex-wrap: wrap; justify-content: center; gap: 26px; margin-top: 28px; }
.contact-lines .tk { font-size: 12px; letter-spacing: .14em; }

.joke { width: 220px; height: auto; margin: 56px auto 0; display: block; }

/* ---------- FOOTER ---------- */

.footer { border-top: 1px solid var(--line); padding: 40px 0 56px; }
.nameplate, .built {
  font: 400 12px var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}
.footlinks { display: flex; flex-wrap: wrap; gap: 22px; margin: 18px 0; }
.footlinks a {
  font: 400 12px var(--mono);
  letter-spacing: .14em;
  color: var(--muted);
  text-decoration: none;
  transition: color .2s ease-out;
}
.footlinks a:hover { color: var(--ink); }

/* ---------- REVEALS ---------- */

.reveal { opacity: 0; transform: translateY(14px); }
.reveal.in { opacity: 1; transform: none; transition: opacity .45s ease-out, transform .45s ease-out; }

.hero-copy.in { transition-duration: .5s; }

/* ---------- RESPONSIVE ---------- */

@media (max-width: 920px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero-dia { order: -1; }
  .aux-grid { grid-template-columns: 1fr; }
  .sect { padding: 56px 24px; }
  .hero { padding: 48px 0 56px; }
  .feeder { grid-template-columns: 32px 1fr; gap: 16px; }

  .menu-toggle { display: block; }
  .navlinks {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--field);
    border-bottom: 1px solid var(--line);
    padding: 8px 24px 20px;
  }
  .navlinks.open { display: flex; }
  .navlinks a { padding: 14px 0; }
  .navlinks a.btn-primary { text-align: center; margin-top: 10px; }
  .nav-inner { position: relative; }
}

@media (max-width: 920px) {
  .skills { grid-template-columns: 1fr 1fr; gap: 0 24px; }
  .skgroup { margin-bottom: 28px; }
}

@media (max-width: 560px) {
  .skills { grid-template-columns: 1fr; }
}

/* ---------- REDUCED MOTION ---------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .reveal, .feeder { opacity: 1; transform: none; }
  .draw { stroke-dashoffset: 0; }
  .flow { opacity: 1; }
  .rail .brkbox { background: var(--signal); }
}