/* =========================================================
   CROW — design tokens
   A dead-signal CRT terminal, not a "crypto landing page."
   ========================================================= */
@import url('https://fonts.googleapis.com/css2?family=VT323&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root{
  --black:        #030503;
  --screen:        #050f09;
  --screen-2:      #071a10;
  --green:         #4dff9a;
  --green-bright:  #9dffca;
  --green-mid:     #2fbf78;
  --green-dim:     #1c5c3a;
  --green-dimmer:  #123626;
  --amber:         #ff6a45;
  --muted:         #6f9b83;
  --line:          rgba(77,255,154,0.18);

  --font-display:  'VT323', monospace;
  --font-body:     'JetBrains Mono', monospace;

  --radius: 3px;
  --gutter: clamp(20px, 5vw, 64px);
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin: 0;
  background: var(--black);
  color: var(--green);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection{ background: var(--green); color: var(--black); }

a{ color: var(--green-bright); text-decoration: none; }
a:hover{ text-decoration: underline; }

:focus-visible{
  outline: 2px solid var(--green-bright);
  outline-offset: 2px;
}

h1, h2, h3{
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.02em;
  margin: 0 0 0.4em;
  color: var(--green-bright);
}
h1{ font-size: clamp(40px, 7vw, 84px); line-height: 0.95; }
h2{ font-size: clamp(28px, 4vw, 42px); }
h3{ font-size: 22px; }

p{ margin: 0 0 1em; color: var(--muted); max-width: 62ch; }
p.lead{ color: var(--green); font-size: 17px; }

code, .mono{ font-family: var(--font-body); }

.wrap{
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* -------------------- CRT screen shell -------------------- */
.crt{
  position: relative;
  background: var(--screen);
  border: 1px solid var(--green-dim);
  border-radius: 10px;
  overflow: hidden;
}
.crt::before{
  /* scanlines */
  content: "";
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,0) 0px,
    rgba(0,0,0,0) 2px,
    rgba(0,0,0,0.35) 3px
  );
  pointer-events: none;
  mix-blend-mode: multiply;
  z-index: 3;
}
.crt::after{
  /* vignette */
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at center, rgba(0,0,0,0) 55%, rgba(0,0,0,0.55) 100%);
  pointer-events: none;
  z-index: 3;
}
@media (prefers-reduced-motion: no-preference){
  .crt-flicker{ animation: flicker 6s infinite; }
}
@keyframes flicker{
  0%, 96%, 100% { opacity: 1; }
  97% { opacity: 0.86; }
  98% { opacity: 1; }
  99% { opacity: 0.92; }
}

/* -------------------- top nav -------------------- */
.topbar{
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter);
  background: rgba(3,5,3,0.97);
  border-bottom: 1px solid var(--line);
}
.brand{
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-size: 26px;
  color: var(--green-bright);
}
.brand .glyph{ font-size: 20px; line-height: 1; color: var(--green); }
.navlinks{ display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
.navlinks a{
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.06em;
}
.navlinks a.active, .navlinks a:hover{ color: var(--green-bright); }
.navlinks .btn{ color: var(--black); }
.navtoggle{ display: none; }

.btn{
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--green);
  border-radius: var(--radius);
  color: var(--green-bright);
  background: transparent;
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
.btn:hover{ background: var(--green); color: var(--black); text-decoration: none; }
.btn.solid{ background: var(--green); color: var(--black); }
.btn.solid:hover{ background: var(--green-bright); }

/* -------------------- footer -------------------- */
footer{
  border-top: 1px solid var(--line);
  padding: 40px var(--gutter) 60px;
  margin-top: 100px;
}
.footer-grid{
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 24px;
  max-width: 1080px; margin: 0 auto;
}
.footer-grid .muted{ color: var(--muted); font-size: 13px; }
.foot-links{ display: flex; gap: 22px; list-style: none; padding: 0; margin: 0; }
.foot-links a{ color: var(--muted); font-size: 13px; }
.foot-links a:hover{ color: var(--green-bright); }

/* -------------------- generic sections -------------------- */
section{ padding: 90px 0; }
.eyebrow{
  color: var(--green-dim);
  font-size: 13px;
  margin-bottom: 10px;
}
.grid-3{ display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.grid-3 > div{ background: var(--screen); padding: 26px; }
@media (max-width: 800px){ .grid-3{ grid-template-columns: 1fr; } }

.card{
  border: 1px solid var(--line);
  padding: 24px;
  background: var(--screen);
}

table{ width: 100%; border-collapse: collapse; }
th, td{ text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); font-size: 14px; }
th{ color: var(--green-dim); font-weight: 400; letter-spacing: 0.04em; }
td{ color: var(--muted); }
td.val{ color: var(--green); }

.tag{
  display: inline-block;
  font-size: 11px;
  padding: 3px 8px;
  border: 1px solid currentColor;
  border-radius: 2px;
}
.tag.live{ color: var(--green); }
.tag.locked{ color: var(--muted); }
.tag.active{ color: var(--amber); }

/* -------------------- background music toggle -------------------- */
.bgm-toggle{
  background: none;
  border: 1px solid var(--green-dim);
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.05em;
  padding: 6px 10px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: color 120ms ease, border-color 120ms ease;
}
.bgm-toggle:hover{ color: var(--green-bright); border-color: var(--green); }
.bgm-toggle.is-on{ color: var(--green); border-color: var(--green-mid); }

/* mobile nav */
@media (max-width: 720px){
  .navlinks{
    position: fixed; inset: 56px 0 0 0;
    background: var(--black);
    flex-direction: column;
    padding: 30px var(--gutter);
    display: none;
    border-top: 1px solid var(--line);
    z-index: 50;
  }
  .navlinks.open{ display: flex; }
  .navtoggle{
    display: block;
    background: none; border: 1px solid var(--green-dim); color: var(--green);
    padding: 6px 10px; font-family: var(--font-body);
  }
}

/* -------------------- terminal component -------------------- */
.terminal{
  height: min(70vh, 640px);
  display: flex;
  flex-direction: column;
  padding: 20px;
  cursor: text;
}
.term-titlebar{
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--green-dim);
  padding-bottom: 12px; margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  letter-spacing: 0.05em;
}
.term-output{
  flex: 1;
  overflow-y: auto;
  font-size: 14px;
  padding-right: 6px;
}
.term-output pre.ascii{
  margin: 0 0 10px; color: var(--green-bright); font-size: 14px; line-height: 1.3;
}
.term-line{ white-space: pre-wrap; word-break: break-word; margin-bottom: 2px; }
.term-line.dim{ color: var(--muted); }
.term-line.echo{ color: var(--green-bright); }
.term-line.err{ color: var(--amber); }
.term-line.ok{ color: var(--green-bright); }
.term-block{ margin: 10px 0 16px; }

.term-panel{
  border: 1px solid var(--line);
  padding: 14px 16px;
  background: rgba(77,255,154,0.03);
}
.panel-title{ color: var(--green-dim); font-size: 12px; letter-spacing: 0.06em; margin-bottom: 10px; }
.help-grid{ display: grid; gap: 4px; }
.help-row{ display: flex; gap: 16px; }
.help-row .hl{ color: var(--green-bright); min-width: 110px; }
.help-row span:last-child, .help-row a{ color: var(--muted); }
.small{ font-size: 12px; }
.tag-inline{
  font-size: 10px; color: var(--amber); border: 1px solid var(--amber);
  padding: 1px 6px; margin-left: 8px; vertical-align: 1px;
}

.ca-row{ display: flex; align-items: center; gap: 12px; margin-bottom: 8px; flex-wrap: wrap; }
.ca-row code{ color: var(--green-bright); }

.btn.tiny{ padding: 4px 10px; font-size: 11px; }

.defrag-blocks{ display: flex; gap: 8px; flex-wrap: wrap; margin: 12px 0; }
.defrag-block{
  font-family: var(--font-body); font-size: 12px;
  background: transparent; color: var(--green);
  border: 1px solid var(--green-dim); padding: 8px 12px; cursor: pointer;
}
.defrag-block:hover{ border-color: var(--green); }
.defrag-block.good{ color: var(--black); background: var(--green); border-color: var(--green); }
.defrag-block:disabled{ cursor: default; }

.term-form{ display: flex; align-items: center; gap: 8px; margin-top: 10px; border-top: 1px solid var(--line); padding-top: 12px; }
.term-form .prompt{ color: var(--green-bright); white-space: nowrap; font-size: 14px; }
.term-input{
  flex: 1; background: transparent; border: none; outline: none;
  color: var(--green-bright); font-family: var(--font-body); font-size: 14px;
  caret-color: var(--green);
}

/* -------------------- home hero -------------------- */
.hero{ padding: 70px 0 40px; }
.hero-grid{ display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px; align-items: center; }
@media (max-width: 900px){ .hero-grid{ grid-template-columns: 1fr; } }
.hero-glyph{ font-family: var(--font-display); font-size: 20px; color: var(--green-dim); white-space: pre; line-height: 1.15; margin-bottom: 18px; }
.hero .lede{ font-size: 18px; }
.hero-cta{ display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.ticker{
  display: flex; align-items: center; gap: 14px;
  border: 1px solid var(--line); padding: 12px 16px;
  font-size: 13px; color: var(--muted); margin-top: 34px; flex-wrap: wrap;
}
.ticker code{ color: var(--green); }

.mini-term{
  font-size: 13px; padding: 18px; height: 320px; overflow: hidden; position: relative;
}
.mini-term .term-output{ pointer-events: none; }

/* -------------------- feature grid (home) -------------------- */
.feature{ padding: 22px; }
.feature .k{ color: var(--green-dim); font-size: 12px; margin-bottom: 10px; }
.feature h3{ margin-bottom: 8px; }
.feature p{ font-size: 13px; margin: 0; }

/* -------------------- roadmap -------------------- */
.phase{
  display: grid; grid-template-columns: 160px 1fr; gap: 24px;
  padding: 28px 0; border-bottom: 1px solid var(--line);
}
.phase:last-child{ border-bottom: none; }
@media (max-width: 700px){ .phase{ grid-template-columns: 1fr; gap: 8px; } }
.phase-tag{ font-family: var(--font-display); font-size: 30px; color: var(--green-dim); }
.phase ul{ margin: 12px 0 0; padding-left: 18px; color: var(--muted); font-size: 14px; }
.phase li{ margin-bottom: 6px; }

/* -------------------- docs -------------------- */
.toc{ position: sticky; top: 90px; align-self: start; }
.toc ul{ list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.toc a{ color: var(--muted); font-size: 13px; }
.toc a:hover{ color: var(--green-bright); }
.docs-grid{ display: grid; grid-template-columns: 200px 1fr; gap: 50px; }
@media (max-width: 800px){ .docs-grid{ grid-template-columns: 1fr; } .toc{ position: static; } }
.docs-grid section{ padding: 0 0 60px; }
.docs-grid h2{ scroll-margin-top: 90px; border-top: 1px solid var(--line); padding-top: 40px; }
.docs-grid section:first-child h2{ border-top: none; padding-top: 0; }