/* ============================================================================
   johnbampton.os - Developer Operating System UI
   Author: John Bampton
   A cyberpunk engineering dashboard / terminal + IDE hybrid.
   Vanilla CSS3. Tailwind (CDN) handles layout utilities; this file owns the
   theme, the chrome, the glow, and every custom component.
   ============================================================================ */

/* ---------------------------------------------------------------------------
   1. Design tokens
   --------------------------------------------------------------------------- */
:root {
  /* Surfaces (dark - primary theme) */
  --bg:        #05080d;
  --bg-grid:   #070b12;
  --bg-elev:   #0a1019;
  --bg-panel:  #0c131d;
  --bg-panel-2:#101925;
  --border:    #1b2735;
  --border-soft:#141d28;

  /* Text */
  --text:      #cdd9e5;
  --text-dim:  #7a8a9d;
  --text-mute: #4d5a6b;

  /* Neon accents */
  --green:  #00ff9c;
  --green-d:#00c97c;
  --cyan:   #2dd4ff;
  --purple: #b478ff;
  --amber:  #ffc857;
  --red:    #ff5d73;
  --blue:   #4d8dff;

  /* Semantic */
  --accent:    var(--green);
  --accent-soft: rgba(0, 255, 156, 0.12);

  /* Type */
  --font-mono: "JetBrains Mono", "Fira Code", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  /* Glow */
  --glow-green: 0 0 8px rgba(0,255,156,.45), 0 0 22px rgba(0,255,156,.18);
  --glow-cyan:  0 0 8px rgba(45,212,255,.45), 0 0 22px rgba(45,212,255,.18);
  --glow-purple:0 0 8px rgba(180,120,255,.45), 0 0 22px rgba(180,120,255,.18);

  --radius: 10px;
  --maxw: 1180px;
  --shadow: 0 10px 40px -12px rgba(0,0,0,.7);
}

/* Light theme overrides - optional secondary mode */
:root[data-theme="light"] {
  --bg:        #eef1f5;
  --bg-grid:   #e8ecf1;
  --bg-elev:   #ffffff;
  --bg-panel:  #ffffff;
  --bg-panel-2:#f3f6fa;
  --border:    #d3dae3;
  --border-soft:#e2e7ee;
  --text:      #1a2330;
  --text-dim:  #50607a;
  --text-mute: #8794a6;
  --green-d:   #00935a;
  --accent-soft: rgba(0,147,90,.10);
  --shadow: 0 10px 30px -14px rgba(20,40,80,.25);
}

/* ---------------------------------------------------------------------------
   2. Reset / base
   --------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
}

/* Ambient background: dot grid + radial neon glows */
body::before {
  content: "";
  position: fixed; inset: 0;
  z-index: -2;
  background-image:
    radial-gradient(circle at 15% 0%, rgba(0,255,156,.07), transparent 40%),
    radial-gradient(circle at 85% 100%, rgba(180,120,255,.07), transparent 40%),
    radial-gradient(circle at 50% 50%, rgba(45,212,255,.04), transparent 60%);
}
body::after {
  content: "";
  position: fixed; inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--border-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-soft) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 80%);
          mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 80%);
  opacity: .5;
}

/* Subtle CRT scanline overlay */
.scanlines {
  pointer-events: none;
  position: fixed; inset: 0; z-index: 9990;
  background: repeating-linear-gradient(
    to bottom, rgba(0,0,0,0) 0, rgba(0,0,0,0) 2px,
    rgba(0,0,0,.10) 3px, rgba(0,0,0,0) 4px);
  mix-blend-mode: multiply;
  opacity: .35;
}
:root[data-theme="light"] .scanlines { display: none; }
.scanlines.off { display: none; }

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; padding: 0; }
button { font-family: inherit; cursor: pointer; background: none; border: none; color: inherit; }
:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; border-radius: 4px; }

/* Selection */
::selection { background: var(--green); color: #04140d; }

/* Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 6px; border: 2px solid var(--bg); }
::-webkit-scrollbar-thumb:hover { background: var(--green-d); }

/* ---------------------------------------------------------------------------
   3. Utility helpers
   --------------------------------------------------------------------------- */
.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 1.25rem; }
.mono { font-family: var(--font-mono); }
.text-green  { color: var(--green); }
.text-cyan   { color: var(--cyan); }
.text-purple { color: var(--purple); }
.text-amber  { color: var(--amber); }
.text-dim    { color: var(--text-dim); }
.text-mute   { color: var(--text-mute); }
.glow-text   { text-shadow: var(--glow-green); }
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 10000;
  background: var(--green); color: #04140d; padding: .6rem 1rem; font-weight: 700;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------------------------------------------------------------------------
   4. Top bar (OS menu bar)
   --------------------------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 1000;
  background: color-mix(in srgb, var(--bg-elev) 82%, transparent);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.topbar__inner {
  display: flex; align-items: center; gap: 1rem;
  height: 56px; max-width: var(--maxw); margin-inline: auto; padding-inline: 1.25rem;
}
.brand { display: flex; align-items: center; gap: .6rem; font-family: var(--font-mono); font-weight: 700; letter-spacing: .02em; }
.brand__dot { width: 11px; height: 11px; border-radius: 50%; background: var(--green); box-shadow: var(--glow-green); animation: pulse 2.4s ease-in-out infinite; }
.brand__name b { color: var(--green); }
.brand__name span { color: var(--text-dim); font-weight: 400; }

.nav { display: flex; align-items: center; gap: .25rem; margin-left: auto; }
.nav a {
  font-family: var(--font-mono); font-size: .8rem; color: var(--text-dim);
  padding: .45rem .7rem; border-radius: 6px; transition: color .2s, background .2s; position: relative;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--green); background: var(--accent-soft); }
.nav a::before { content: "~/"; color: var(--text-mute); }

.topbar__tools { display: flex; align-items: center; gap: .4rem; }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--bg-panel); color: var(--text-dim); transition: all .2s;
}
.icon-btn:hover { color: var(--green); border-color: var(--green-d); box-shadow: var(--glow-green); }
.cmd-trigger {
  display: inline-flex; align-items: center; gap: .5rem; height: 36px; padding: 0 .7rem;
  border: 1px solid var(--border); border-radius: 8px; background: var(--bg-panel);
  color: var(--text-dim); font-family: var(--font-mono); font-size: .75rem; transition: all .2s;
}
.cmd-trigger:hover { border-color: var(--green-d); color: var(--green); }
.cmd-trigger kbd {
  font-family: var(--font-mono); font-size: .68rem; background: var(--bg);
  border: 1px solid var(--border); border-radius: 4px; padding: .05rem .35rem; color: var(--text-mute);
}
.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav { position: fixed; inset: 56px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0;
    background: var(--bg-elev); border-bottom: 1px solid var(--border); padding: .5rem;
    transform: translateY(-130%); transition: transform .3s ease; margin-left: 0; }
  .nav.open { transform: translateY(0); }
  .nav a { padding: .8rem 1rem; font-size: .9rem; }
  .nav-toggle { display: inline-flex; }
  .cmd-trigger span.cmd-label { display: none; }
}

/* ---------------------------------------------------------------------------
   5. Section scaffolding
   --------------------------------------------------------------------------- */
.section { padding: 5.5rem 0; position: relative; }
.section--tight { padding: 3.5rem 0; }
.section-head { margin-bottom: 2.5rem; }
.section-head__kicker {
  font-family: var(--font-mono); font-size: .78rem; color: var(--green);
  display: inline-flex; align-items: center; gap: .5rem; margin-bottom: .6rem;
}
.section-head__kicker::before { content: "//"; color: var(--text-mute); }
.section-head h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.section-head p { color: var(--text-dim); margin-top: .6rem; max-width: 56ch; }
.section-divider { height: 1px; background: linear-gradient(90deg, transparent, var(--border), transparent); }

/* ---------------------------------------------------------------------------
   6. Window / panel chrome (the "app window" look)
   --------------------------------------------------------------------------- */
.win {
  background: var(--bg-panel); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.win__bar {
  display: flex; align-items: center; gap: .5rem; padding: .55rem .9rem;
  background: var(--bg-panel-2); border-bottom: 1px solid var(--border);
}
.win__dots { display: flex; gap: .4rem; }
.win__dots i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.win__dots i:nth-child(1){ background: #ff5f57; }
.win__dots i:nth-child(2){ background: #febc2e; }
.win__dots i:nth-child(3){ background: #28c840; }
.win__title { font-family: var(--font-mono); font-size: .75rem; color: var(--text-dim); margin-left: .4rem; }
.win__title .text-green { color: var(--green); }
.win__body { padding: 1.2rem 1.3rem; }

/* ---------------------------------------------------------------------------
   7. Hero
   --------------------------------------------------------------------------- */
.hero { position: relative; padding-top: 4rem; padding-bottom: 4rem; }
.hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 2.2rem; align-items: start; }
@media (max-width: 900px) { .hero__grid { grid-template-columns: 1fr; } }

.term { font-family: var(--font-mono); font-size: .86rem; }
.term__line { display: block; white-space: pre-wrap; word-break: break-word; }
.term__line .prompt-user { color: var(--green); }
.term__line .prompt-host { color: var(--cyan); }
.term__line .prompt-path { color: var(--purple); }
.term__line .ok { color: var(--green); }
.term__line .warn { color: var(--amber); }
.term__line .muted { color: var(--text-mute); }
.boot-line { opacity: 0; }
.boot-line.show { opacity: 1; animation: lineIn .25s ease; }

.hero__identity { margin-top: 1.6rem; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 900; letter-spacing: -.03em; line-height: 1; }
.hero h1 .alias { color: var(--green); text-shadow: var(--glow-green); }
.hero__role { font-family: var(--font-mono); color: var(--text-dim); margin-top: .9rem; font-size: 1rem; }
.hero__role .typed { color: var(--cyan); }
.caret { display: inline-block; width: .6ch; background: var(--green); margin-left: 1px; animation: blink 1s steps(1) infinite; color: transparent; }
.hero__statement { margin-top: 1.4rem; font-size: 1.1rem; color: var(--text); max-width: 52ch; }
.hero__statement b { color: var(--text); }

.hero__cta { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.8rem; }
.btn {
  display: inline-flex; align-items: center; gap: .55rem; font-family: var(--font-mono);
  font-size: .85rem; font-weight: 600; padding: .7rem 1.1rem; border-radius: 8px;
  border: 1px solid var(--border); transition: all .22s; background: var(--bg-panel); color: var(--text);
}
.btn:hover { transform: translateY(-2px); }
.btn--primary { background: var(--green); color: #04140d; border-color: var(--green); box-shadow: var(--glow-green); }
.btn--primary:hover { box-shadow: 0 0 14px rgba(0,255,156,.6), 0 0 34px rgba(0,255,156,.3); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: var(--glow-cyan); }

/* Stat cards */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: .8rem; margin-top: 1.4rem; }
.stat {
  background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 1rem 1.1rem; position: relative; overflow: hidden; transition: border-color .25s, transform .25s;
}
.stat:hover { border-color: var(--green-d); transform: translateY(-3px); }
.stat::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, var(--accent-soft), transparent 60%); opacity: 0; transition: opacity .25s; }
.stat:hover::after { opacity: 1; }
.stat__num { font-family: var(--font-mono); font-size: 1.8rem; font-weight: 800; color: var(--green); line-height: 1; }
.stat__label { font-size: .72rem; color: var(--text-dim); margin-top: .45rem; text-transform: uppercase; letter-spacing: .08em; }

/* GitHub remote stat images */
.gh-embed { margin-top: 1rem; display: grid; gap: .7rem; }
.gh-embed img { width: 100%; border: 1px solid var(--border); border-radius: var(--radius); background: var(--bg-panel); }

/* ---------------------------------------------------------------------------
   8. About
   --------------------------------------------------------------------------- */
.about__grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 1.6rem; }
@media (max-width: 820px){ .about__grid { grid-template-columns: 1fr; } }
.prose p { color: var(--text-dim); margin-bottom: 1rem; }
.prose p b, .prose p strong { color: var(--text); }
.code-block {
  font-family: var(--font-mono); font-size: .82rem; line-height: 1.75; color: var(--text-dim);
  white-space: pre; overflow-x: auto;
}
.code-block .k { color: var(--purple); }
.code-block .s { color: var(--amber); }
.code-block .f { color: var(--cyan); }
.code-block .c { color: var(--text-mute); }
.code-block .n { color: var(--green); }

.facts { display: grid; gap: .15rem; }
.fact { display: flex; gap: .8rem; padding: .55rem 0; border-bottom: 1px dashed var(--border-soft); font-family: var(--font-mono); font-size: .82rem; }
.fact__k { color: var(--text-mute); min-width: 9.5rem; }
.fact__v { color: var(--text); }
.fact__v a { color: var(--cyan); }
.fact__v a:hover { text-shadow: var(--glow-cyan); }

/* ---------------------------------------------------------------------------
   9. GitHub / open source
   --------------------------------------------------------------------------- */
.repo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.repo {
  display: flex; flex-direction: column; gap: .7rem; background: var(--bg-panel);
  border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem; transition: all .25s; min-height: 150px;
}
.repo:hover { border-color: var(--green-d); transform: translateY(-3px); box-shadow: var(--glow-green); }
.repo__top { display: flex; align-items: center; gap: .5rem; }
.repo__name { font-family: var(--font-mono); font-weight: 700; color: var(--green); word-break: break-word; }
.repo__desc { font-size: .85rem; color: var(--text-dim); flex: 1; }
.repo__meta { display: flex; flex-wrap: wrap; gap: 1rem; font-family: var(--font-mono); font-size: .74rem; color: var(--text-dim); }
.repo__meta span { display: inline-flex; align-items: center; gap: .3rem; }
.lang-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--cyan); }
.repo__loading { color: var(--text-mute); font-family: var(--font-mono); font-size: .82rem; grid-column: 1/-1; padding: 1rem; }

/* contribution mock heatmap */
.heatmap { display: grid; grid-template-columns: repeat(30, 1fr); gap: 3px; margin-top: 1rem; }
.heatmap i { aspect-ratio: 1; border-radius: 2px; background: var(--border-soft); display: block; }
.heatmap i[data-l="1"]{ background: rgba(0,255,156,.25); }
.heatmap i[data-l="2"]{ background: rgba(0,255,156,.45); }
.heatmap i[data-l="3"]{ background: rgba(0,255,156,.7); }
.heatmap i[data-l="4"]{ background: var(--green); box-shadow: 0 0 6px rgba(0,255,156,.6); }

/* ---------------------------------------------------------------------------
   10. Projects
   --------------------------------------------------------------------------- */
.proj-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.1rem; }
.proj {
  position: relative; background: var(--bg-panel); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; transition: all .25s; display: flex; flex-direction: column;
}
.proj:hover { transform: translateY(-4px); border-color: var(--purple); box-shadow: var(--glow-purple); }
.proj__head { display: flex; align-items: center; justify-content: space-between; padding: .8rem 1rem; background: var(--bg-panel-2); border-bottom: 1px solid var(--border); }
.proj__head .fname { font-family: var(--font-mono); font-size: .8rem; color: var(--text-dim); }
.proj__body { padding: 1.1rem; flex: 1; display: flex; flex-direction: column; gap: .7rem; }
.proj__name { font-size: 1.15rem; font-weight: 700; }
.proj__name a:hover { color: var(--purple); }
.proj__desc { font-size: .86rem; color: var(--text-dim); flex: 1; }
.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tag { font-family: var(--font-mono); font-size: .68rem; padding: .2rem .5rem; border-radius: 5px; border: 1px solid var(--border); color: var(--cyan); background: var(--bg); }
.status { font-family: var(--font-mono); font-size: .7rem; display: inline-flex; align-items: center; gap: .4rem; }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; }
.status--active { color: var(--green); }
.status--active::before { background: var(--green); box-shadow: var(--glow-green); animation: pulse 2s infinite; }
.status--archived { color: var(--text-mute); }
.status--archived::before { background: var(--text-mute); }

/* ---------------------------------------------------------------------------
   11. Skills
   --------------------------------------------------------------------------- */
.skill-cats { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.1rem; }
.skill-cat { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.2rem; transition: border-color .25s; }
.skill-cat:hover { border-color: var(--green-d); }
.skill-cat__title { font-family: var(--font-mono); font-size: .8rem; color: var(--green); margin-bottom: .9rem; display: flex; align-items: center; gap: .5rem; }
.skill-cat__title::before { content: ">"; color: var(--text-mute); }
.chips { display: flex; flex-wrap: wrap; gap: .45rem; }
.chip {
  font-family: var(--font-mono); font-size: .76rem; padding: .35rem .65rem; border-radius: 6px;
  border: 1px solid var(--border); background: var(--bg); color: var(--text-dim); transition: all .2s; cursor: default;
}
.chip:hover { color: var(--green); border-color: var(--green-d); transform: translateY(-2px); box-shadow: var(--glow-green); }

/* ---------------------------------------------------------------------------
   12. Timeline
   --------------------------------------------------------------------------- */
.timeline { position: relative; padding-left: 2rem; }
.timeline::before { content: ""; position: absolute; left: 6px; top: 4px; bottom: 4px; width: 2px; background: linear-gradient(var(--green), var(--purple), transparent); }
.tl-item { position: relative; padding: 0 0 2rem 1.4rem; }
.tl-item::before { content: ""; position: absolute; left: -1.6rem; top: 4px; width: 13px; height: 13px; border-radius: 50%; background: var(--bg); border: 2px solid var(--green); box-shadow: var(--glow-green); }
.tl-item__date { font-family: var(--font-mono); font-size: .74rem; color: var(--amber); }
.tl-item__role { font-weight: 700; font-size: 1.05rem; margin-top: .2rem; }
.tl-item__org { color: var(--cyan); font-family: var(--font-mono); font-size: .82rem; }
.tl-item__org a:hover { text-shadow: var(--glow-cyan); }
.tl-item__desc { color: var(--text-dim); font-size: .88rem; margin-top: .5rem; }

/* ---------------------------------------------------------------------------
   13. Lists (talks, books, research)
   --------------------------------------------------------------------------- */
.list-rows { display: grid; gap: .5rem; }
.row {
  display: flex; gap: 1rem; align-items: baseline; padding: .85rem 1rem; background: var(--bg-panel);
  border: 1px solid var(--border); border-radius: 8px; transition: all .2s;
}
.row:hover { border-color: var(--green-d); transform: translateX(4px); }
.row__date { font-family: var(--font-mono); font-size: .74rem; color: var(--amber); min-width: 6rem; }
.row__title { color: var(--text); font-size: .92rem; }
.row__title a { color: var(--text); }
.row__title a:hover { color: var(--green); }
.row__sub { color: var(--text-dim); font-size: .8rem; }

/* ---------------------------------------------------------------------------
   14. Contact
   --------------------------------------------------------------------------- */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.contact-card {
  display: flex; align-items: center; gap: .9rem; padding: 1.1rem; background: var(--bg-panel);
  border: 1px solid var(--border); border-radius: var(--radius); transition: all .25s;
}
.contact-card:hover { border-color: var(--green-d); transform: translateY(-3px); box-shadow: var(--glow-green); }
.contact-card .ic { width: 40px; height: 40px; flex: none; display: grid; place-items: center; border-radius: 8px; background: var(--bg); border: 1px solid var(--border); color: var(--green); }
.contact-card__label { font-family: var(--font-mono); font-size: .72rem; color: var(--text-mute); text-transform: uppercase; letter-spacing: .06em; }
.contact-card__val { font-size: .9rem; color: var(--text); word-break: break-all; }

/* ---------------------------------------------------------------------------
   15. Footer
   --------------------------------------------------------------------------- */
.footer { border-top: 1px solid var(--border); padding: 2.5rem 0; margin-top: 2rem; background: var(--bg-elev); }
.footer__grid { display: flex; flex-wrap: wrap; gap: 1.5rem; justify-content: space-between; align-items: center; }
.footer__brand { font-family: var(--font-mono); }
.footer__brand b { color: var(--green); }
.footer__meta { font-family: var(--font-mono); font-size: .76rem; color: var(--text-mute); display: flex; flex-wrap: wrap; gap: .4rem 1rem; }
.footer__meta .dot-ok { color: var(--green); }
.footer__links { display: flex; gap: 1rem; font-family: var(--font-mono); font-size: .8rem; }
.footer__links a { color: var(--text-dim); }
.footer__links a:hover { color: var(--green); }

/* ---------------------------------------------------------------------------
   16. Command palette
   --------------------------------------------------------------------------- */
.palette-overlay {
  position: fixed; inset: 0; z-index: 5000; background: rgba(0,0,0,.6);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  display: none; align-items: flex-start; justify-content: center; padding-top: 12vh;
}
.palette-overlay.open { display: flex; }
.palette {
  width: min(620px, 92vw); background: var(--bg-panel); border: 1px solid var(--green-d);
  border-radius: 12px; box-shadow: 0 24px 80px -20px rgba(0,0,0,.8), var(--glow-green); overflow: hidden;
  animation: popIn .18s ease;
}
.palette__input-wrap { display: flex; align-items: center; gap: .6rem; padding: .9rem 1.1rem; border-bottom: 1px solid var(--border); }
.palette__input-wrap .chev { color: var(--green); font-family: var(--font-mono); }
.palette input { flex: 1; background: none; border: none; color: var(--text); font-family: var(--font-mono); font-size: .95rem; outline: none; }
.palette__list { max-height: 52vh; overflow-y: auto; padding: .4rem; }
.palette__item {
  display: flex; align-items: center; gap: .8rem; width: 100%; text-align: left; padding: .7rem .8rem;
  border-radius: 8px; font-family: var(--font-mono); font-size: .85rem; color: var(--text-dim);
}
.palette__item .pi-ic { color: var(--text-mute); width: 1.2rem; text-align: center; }
.palette__item .pi-sub { margin-left: auto; font-size: .7rem; color: var(--text-mute); }
.palette__item.active, .palette__item:hover { background: var(--accent-soft); color: var(--green); }
.palette__item.active .pi-ic { color: var(--green); }
.palette__empty { padding: 1.4rem; text-align: center; color: var(--text-mute); font-family: var(--font-mono); font-size: .85rem; }

/* ---------------------------------------------------------------------------
   17. Terminal mode (full CLI overlay)
   --------------------------------------------------------------------------- */
.terminal-overlay {
  position: fixed; inset: 0; z-index: 6000; background: rgba(2,5,9,.96);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  display: none; flex-direction: column; padding: 1rem;
}
.terminal-overlay.open { display: flex; animation: fadeIn .2s ease; }
.terminal-shell { width: min(900px, 100%); margin: auto; height: min(78vh, 640px); display: flex; flex-direction: column;
  background: var(--bg-panel); border: 1px solid var(--green-d); border-radius: 12px; overflow: hidden; box-shadow: var(--glow-green); }
.terminal-out { flex: 1; overflow-y: auto; padding: 1rem 1.2rem; font-family: var(--font-mono); font-size: .85rem; line-height: 1.7; }
.terminal-out .echo { color: var(--text-dim); }
.terminal-out .echo .you { color: var(--green); }
.terminal-out .res { color: var(--text); white-space: pre-wrap; margin-bottom: .6rem; }
.terminal-out .res a { color: var(--cyan); text-decoration: underline; }
.terminal-out .res .hl { color: var(--amber); }
.terminal-input-line { display: flex; align-items: center; gap: .5rem; padding: .8rem 1.2rem; border-top: 1px solid var(--border); font-family: var(--font-mono); }
.terminal-input-line .ps1 { color: var(--green); white-space: nowrap; }
.terminal-input-line input { flex: 1; background: none; border: none; outline: none; color: var(--text); font-family: var(--font-mono); font-size: .85rem; }

/* ---------------------------------------------------------------------------
   18. About-system modal
   --------------------------------------------------------------------------- */
.modal-overlay { position: fixed; inset: 0; z-index: 5500; background: rgba(0,0,0,.6); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); display: none; align-items: center; justify-content: center; padding: 1rem; }
.modal-overlay.open { display: flex; animation: fadeIn .2s ease; }
.modal { width: min(460px, 94vw); animation: popIn .18s ease; }
.sysrow { display: flex; justify-content: space-between; gap: 1rem; padding: .5rem 0; border-bottom: 1px dashed var(--border-soft); font-family: var(--font-mono); font-size: .82rem; }
.sysrow__k { color: var(--text-mute); }
.sysrow__v { color: var(--green); }
.bar { height: 7px; border-radius: 4px; background: var(--bg); border: 1px solid var(--border); overflow: hidden; margin-top: .3rem; }
.bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--green), var(--cyan)); box-shadow: var(--glow-green); }

/* ---------------------------------------------------------------------------
   19. Scroll reveal + toast + misc animation
   --------------------------------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s cubic-bezier(.2,.7,.2,1), transform .6s cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: none; }

.toast { position: fixed; bottom: 1.2rem; left: 50%; transform: translateX(-50%) translateY(140%);
  background: var(--bg-panel); border: 1px solid var(--green-d); color: var(--green); font-family: var(--font-mono);
  font-size: .82rem; padding: .7rem 1.1rem; border-radius: 8px; z-index: 9999; box-shadow: var(--glow-green); transition: transform .35s cubic-bezier(.2,.9,.2,1); }
.toast.show { transform: translateX(-50%) translateY(0); }

/* page header for sub-pages */
.page-hero { padding: 3.5rem 0 1rem; }
.page-hero .crumbs { font-family: var(--font-mono); font-size: .78rem; color: var(--text-mute); margin-bottom: .8rem; }
.page-hero .crumbs a { color: var(--text-dim); }
.page-hero .crumbs a:hover { color: var(--green); }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3rem); font-weight: 900; letter-spacing: -.02em; }
.page-hero h1 .text-green { color: var(--green); }
.page-hero p { color: var(--text-dim); margin-top: .7rem; max-width: 60ch; }

/* matrix easter-egg canvas */
#matrix-canvas { position: fixed; inset: 0; z-index: 8000; pointer-events: none; opacity: 0; transition: opacity .4s; }
#matrix-canvas.on { opacity: .85; pointer-events: auto; }

/* ---------------------------------------------------------------------------
   20. Keyframes
   --------------------------------------------------------------------------- */
@keyframes blink { 0%,49%{opacity:1} 50%,100%{opacity:0} }
@keyframes pulse { 0%,100%{ box-shadow: var(--glow-green); opacity:1 } 50%{ box-shadow: none; opacity:.6 } }
@keyframes lineIn { from{ opacity:0; transform: translateY(4px) } to{ opacity:1; transform:none } }
@keyframes fadeIn { from{opacity:0} to{opacity:1} }
@keyframes popIn { from{ opacity:0; transform: scale(.97) translateY(-6px) } to{ opacity:1; transform:none } }

/* no-JS fallback: reveal everything, show nav */
.no-js .reveal { opacity: 1; transform: none; }
.no-js .boot-line { opacity: 1; }
.no-js .caret { display: none; }
.no-js #js-only { display: none; }