/* ============================================================
   FitCheck - design system  ::  CRT pixel "technical instrument"
   Dark phosphor-green. Hairline-bordered panels, ruled rows, a
   dense option table, monospace numerics. Class/id names are kept
   identical to the prior build so app.js keeps working unchanged.
   Green is FitCheck's identity (NOT a vendor's); deliberately
   away from NVIDIA olive #76B900.
   ============================================================ */

:root {
  /* Ink */
  --text-primary:   #d7f5e4;
  --text-secondary: #8fb6a3;
  --text-muted:     #5d7d6e;

  /* Background layers (matte, no gradient blooms) */
  --bg-base:    #070b08;
  --bg-raised:  #0c120d;
  --bg-inset:   #0a0f0b;
  --border:     #1c2a20;
  --border-hi:  #2bbf5f;
  --line-2:     #152019;

  /* Phosphor accent (identity colour) */
  --accent:        #43f57f;
  --accent-strong: #2bbf5f;
  --accent-soft:   rgba(67,245,127,0.10);
  --glow:          rgba(67,245,127,0.35);
  --grid:          rgba(67,245,127,0.045);

  /* Status */
  --ok:   #43f57f;
  --warn: #ffb000;
  --no:   #ff5a48;
  --ok-soft:   rgba(67,245,127,0.10);
  --warn-soft: rgba(255,176,0,0.12);
  --no-soft:   rgba(255,90,72,0.12);

  /* Spacing scale (4px base) */
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px;
  --s-5:24px; --s-6:32px; --s-7:48px; --s-8:64px;

  /* Squarer radii - an instrument is not a soft card */
  --r-sm:3px; --r-md:4px; --r-lg:5px; --r-pill:3px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.40);
  --shadow-md: 0 2px 10px rgba(0,0,0,0.45);
  --shadow-lg: 0 4px 18px rgba(0,0,0,0.55);
  --glowshadow: 0 0 14px var(--glow);

  --font-pixel: 'Press Start 2P', monospace;     /* wordmark, verdict word, labels, CTA */
  --font-crt:   'VT323', ui-monospace, monospace; /* numerics, data table, inputs, hero */
  --font-head:  'VT323', ui-monospace, monospace; /* headings live in the CRT face */
  --font-body:  'Inter', system-ui, sans-serif;   /* body sentences only */
  --font-mono:  'VT323', ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  background: var(--bg-base);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
/* Subtle CRT scanline overlay - low opacity, must not hurt readability. */
body::after {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 9;
  background: repeating-linear-gradient(0deg, rgba(0,0,0,0.16) 0 1px, transparent 1px 3px);
  opacity: .30; mix-blend-mode: multiply;
}

h1,h2,h3 { font-family: var(--font-head); line-height: 1.1; letter-spacing: .01em; font-weight: 400; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
button { font-family: inherit; cursor: pointer; }

/* Numeric face + small uppercase labels (the instrument grammar) */
.num, .crt { font-family: var(--font-crt); }
.lbl {
  font-family: var(--font-crt); font-size: 15px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--text-muted);
}
.pixel { font-family: var(--font-pixel); }

.label {
  display: block;
  font-family: var(--font-crt); font-size: 16px; font-weight: 400;
  text-transform: uppercase; letter-spacing: 0.10em;
  color: var(--text-muted);
  margin-bottom: var(--s-2);
}
.hint { font-size: 13px; color: var(--text-muted); margin-top: var(--s-1); }

/* Icons (pixel SVG; currentColor tints) */
.ic { display: inline-flex; align-items: center; justify-content: center; line-height: 0; flex: none; }
.ic svg { width: 1em; height: 1em; display: block; shape-rendering: geometricPrecision; }
.optional { font-weight: 400; color: var(--text-muted); font-size: 13px; font-family: var(--font-crt); }

/* ----------------------------------------------------------- Topbar */
.topbar {
  display: flex; align-items: center; gap: var(--s-3);
  padding: 0 var(--s-5); height: 56px;
  max-width: 1180px; margin: 0 auto;
  border-bottom: 1px solid var(--border);
}
.logo {
  display: flex; align-items: center; gap: var(--s-2);
  font-family: var(--font-pixel); font-weight: 400; font-size: 14px;
  letter-spacing: .02em;
}
.logo-mark {
  width: 26px; height: 26px; border-radius: 0;
  background: transparent; border: 2px solid var(--accent);
  display: grid; place-items: center;
  box-shadow: var(--glowshadow);
  color: var(--accent);
}
.logo-mark .ic { font-size: 14px; }
.logo .tick { color: var(--accent); text-shadow: 0 0 8px var(--glow); }
.topbar .spacer { flex: 1; }
.topbar nav a { color: var(--text-secondary); font-size: 17px; font-weight: 400; font-family: var(--font-crt); margin-left: var(--s-4); }
.topbar nav a:hover { color: var(--accent); text-decoration: none; }
.statuschip { display: flex; align-items: center; gap: 7px; font-family: var(--font-crt); font-size: 16px; color: var(--text-muted); margin-left: var(--s-4); }
.statuschip b { color: var(--text-secondary); font-weight: 400; }
.statuschip .dot { width: 8px; height: 8px; background: var(--ok); box-shadow: var(--glowshadow); }
.statuschip .lbl { font-size: 13px; }

/* ----------------------------------------------------------- Layout */
.container { max-width: 1180px; margin: 0 auto; padding: 0 var(--s-5) var(--s-8); }

.hero {
  text-align: left; padding: var(--s-6) 0 var(--s-5);
  border-bottom: 1px solid var(--border); margin-bottom: var(--s-6);
}
.hero h1 { font-family: var(--font-crt); font-size: clamp(34px, 5vw, 48px); font-weight: 400; line-height: .98; }
.hero h1 .accent { color: var(--accent); text-shadow: 0 0 12px var(--glow); }
.hero p { color: var(--text-secondary); font-family: var(--font-body); font-size: 14px; max-width: 60ch; margin: var(--s-3) 0 0; }

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--s-5);
  align-items: start;
}
@media (max-width: 900px) { .layout { grid-template-columns: 1fr; } }

/* Hairline-bordered panels - the core motif (no rounded soft cards, no lift) */
.panel {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--s-3) var(--s-4); border-bottom: 1px solid var(--line-2);
}
.panel-body { padding: var(--s-4); }
.form-panel { position: sticky; top: var(--s-4); }
@media (min-width: 901px) {
  .form-panel { max-height: calc(100vh - 32px); overflow-y: auto; scrollbar-width: thin; }
}
@media (max-width: 900px) { .form-panel { position: static; } }

.step { margin-bottom: var(--s-5); }
.step-head { display: flex; align-items: center; gap: var(--s-3); margin-bottom: var(--s-4); }
.step-num {
  width: 24px; height: 24px; border-radius: 0; flex: none;
  background: transparent; color: var(--accent); border: 1px solid var(--border-hi);
  display: grid; place-items: center; font-weight: 400; font-size: 14px;
  font-family: var(--font-crt);
}
.step-head h2 { font-family: var(--font-crt); font-size: 22px; font-weight: 400; letter-spacing: .02em; }

.field { margin-bottom: var(--s-4); }

/* Segmented control - hairline cells, selected state = accent fill, NO lift */
.segmented { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-2); }
.segmented.cols-3 { grid-template-columns: repeat(3, 1fr); }
.seg-btn {
  background: var(--bg-inset); border: 1px solid var(--border);
  color: var(--text-secondary); border-radius: var(--r-sm);
  padding: 10px 8px; font-family: var(--font-crt); font-size: 16px; font-weight: 400; letter-spacing: .03em;
  display: flex; align-items: center; gap: var(--s-2); justify-content: center;
  transition: border-color .15s, color .15s, background .15s;
}
.seg-btn:hover { border-color: var(--border-hi); color: var(--text-primary); }
.seg-btn.active {
  background: var(--accent); border-color: var(--accent);
  color: #04130a; box-shadow: var(--glowshadow);
}
.seg-btn .ic { font-size: 16px; color: var(--text-muted); }
.seg-btn.active .ic { color: #04130a; }
.seg-btn .ic.brand { color: var(--text-secondary); }
.seg-btn.active .ic.brand { color: #04130a; }
.seg-btn.disabled { opacity: .3; pointer-events: none; }

/* Hover tooltip */
[data-tip] { position: relative; }
[data-tip]:hover::after, [data-tip]:focus-visible::after {
  content: attr(data-tip);
  position: absolute; left: 50%; bottom: calc(100% + 8px); transform: translateX(-50%);
  width: max-content; max-width: 240px; z-index: 30;
  background: var(--bg-raised); color: var(--text-secondary);
  border: 1px solid var(--border-hi); border-radius: var(--r-sm);
  padding: 8px 10px; font-size: 12px; font-family: var(--font-body); font-weight: 400; line-height: 1.45; text-align: left;
  box-shadow: var(--shadow-lg); pointer-events: none; white-space: normal;
}

/* Native select / input - CRT terminal face */
select, input[type="text"], input[type="number"], textarea {
  width: 100%; font-family: var(--font-crt); font-size: 18px;
  color: var(--text-primary);
  background: var(--bg-inset);
  border: 1px solid var(--border); border-radius: var(--r-sm);
  padding: 8px 11px;
  transition: border-color .15s, box-shadow .15s;
}
textarea { font-family: var(--font-body); font-size: 14px; }
select:hover, input:hover, textarea:hover { border-color: var(--border-hi); }
select:focus, input:focus, textarea:focus {
  outline: none; border-color: var(--accent-strong); box-shadow: 0 0 0 1px var(--accent-strong);
}
select:disabled, input:disabled, textarea:disabled {
  opacity: .45; cursor: not-allowed; border-color: var(--line-2);
}
select:disabled:hover, input:disabled:hover { border-color: var(--line-2); }
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8' fill='%235d7d6e' shape-rendering='crispEdges'%3E%3Crect x='0' y='2' width='1' height='1'/%3E%3Crect x='1' y='3' width='1' height='1'/%3E%3Crect x='2' y='4' width='1' height='1'/%3E%3Crect x='3' y='5' width='1' height='1'/%3E%3Crect x='4' y='4' width='1' height='1'/%3E%3Crect x='5' y='3' width='1' height='1'/%3E%3Crect x='6' y='2' width='1' height='1'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 12px center;
  padding-right: 36px;
}
textarea { resize: vertical; min-height: 70px; line-height: 1.5; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3); }

/* Run vs Train toggle - two hairline cells, selected = accent, no slide gradient.
   The .tt-slider is kept (app.js toggles .train) but rendered as a flat marker. */
.task-toggle {
  position: relative; display: grid; grid-template-columns: 1fr 1fr;
  gap: 0; background: var(--bg-inset); border: 1px solid var(--border);
  border-radius: var(--r-sm); padding: 3px; margin-bottom: var(--s-4);
}
.tt-opt {
  position: relative; z-index: 2; background: transparent; border: 0;
  color: var(--text-secondary); font-family: var(--font-crt); font-size: 16px; font-weight: 400; letter-spacing: .03em;
  padding: 8px 12px; border-radius: var(--r-sm); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  transition: color .2s;
}
.tt-opt .ic { font-size: 16px; }
.tt-opt.active { color: #04130a; }
.tt-slider {
  position: absolute; z-index: 1; top: 3px; bottom: 3px; left: 3px;
  width: calc(50% - 3px); border-radius: var(--r-sm);
  background: var(--accent); box-shadow: var(--glowshadow);
  transition: transform .2s cubic-bezier(.4,0,.2,1);
}
.task-toggle.train .tt-slider { transform: translateX(100%); background: var(--warn); box-shadow: 0 0 14px rgba(255,176,0,.35); }

/* Use-case picker - flat hairline pills, selected = accent ring, NO rainbow, NO lift */
.uc-group { margin-bottom: var(--s-4); }
.uc-cat {
  font-family: var(--font-crt); font-size: 14px; font-weight: 400; letter-spacing: 0.10em; text-transform: uppercase;
  color: var(--text-muted); margin-bottom: var(--s-2); display: flex; align-items: center; gap: 6px;
}
.uc-grid { display: flex; flex-wrap: wrap; gap: var(--s-2); }
.uc-pill {
  background: var(--bg-inset); border: 1px solid var(--border);
  color: var(--text-secondary); border-radius: var(--r-sm);
  padding: 6px 12px; font-family: var(--font-crt); font-size: 16px; font-weight: 400;
  display: inline-flex; align-items: center; gap: 6px;
  transition: border-color .15s, color .15s, background .15s;
}
.uc-pill:hover { border-color: var(--border-hi); color: var(--text-primary); }
.uc-pill.active {
  background: var(--accent-soft); border-color: var(--accent); color: var(--text-primary);
  box-shadow: inset 0 0 0 1px var(--accent);
}
.uc-pill .pic { font-size: 15px; color: var(--text-muted); }
.uc-pill:hover .pic { color: var(--text-secondary); }
.uc-pill.active .pic { color: var(--accent); }
.uc-cat .ic { font-size: 14px; color: var(--text-muted); }

/* Disclosure (advanced / accordions) */
details.disc {
  border: 1px solid var(--border); border-radius: var(--r-md);
  background: var(--bg-inset); margin-top: var(--s-3); overflow: hidden;
}
details.disc > summary {
  list-style: none; cursor: pointer; padding: 11px 14px;
  font-family: var(--font-crt); font-size: 17px; font-weight: 400; color: var(--text-secondary);
  display: flex; align-items: center; gap: var(--s-2);
}
details.disc > summary::-webkit-details-marker { display: none; }
details.disc > summary .chev { margin-left: auto; transition: transform .2s; color: var(--text-muted); font-size: 14px; }
details.disc[open] > summary .chev { transform: rotate(180deg); }
details.disc > summary .sum-ic { font-size: 16px; color: var(--text-muted); }
details.disc > summary:hover { color: var(--text-primary); }
.disc-body { padding: 0 14px 14px; font-size: 14px; font-family: var(--font-body); color: var(--text-secondary); line-height: 1.6; }
.disc-body code {
  background: var(--bg-base); border: 1px solid var(--border); border-radius: 3px;
  padding: 1px 6px; font-family: var(--font-crt); font-size: 15px; color: var(--accent);
}
.disc-body dl { display: grid; gap: var(--s-3); }
.disc-body dt { font-weight: 400; color: var(--text-primary); font-family: var(--font-crt); font-size: 17px; letter-spacing: .02em; }
.disc-body dd { color: var(--text-muted); }

.parse-btn {
  margin-top: var(--s-2); width: 100%;
  background: var(--bg-inset); border: 1px solid var(--accent);
  color: var(--accent); border-radius: var(--r-sm);
  padding: 9px 12px; font-family: var(--font-crt); font-size: 16px; font-weight: 400; letter-spacing: .03em;
  transition: background .15s, color .15s;
}
.parse-btn:hover { background: var(--accent-soft); color: var(--text-primary); }

/* Primary CTA - the pixel display face, flat accent, no lift */
.cta {
  width: 100%; border: 1px solid var(--accent); border-radius: var(--r-md);
  background: var(--accent);
  color: #04130a; font-weight: 400; font-size: 11px; font-family: var(--font-pixel); letter-spacing: .02em;
  padding: 13px; margin-top: var(--s-2);
  display: flex; align-items: center; justify-content: center; gap: var(--s-2);
  box-shadow: var(--glowshadow);
  transition: filter .15s, box-shadow .15s;
}
.cta:hover { filter: brightness(1.08); box-shadow: 0 0 20px var(--glow); }
.cta:active { filter: brightness(.95); }
.cta .ic { font-size: 14px; }

/* ----------------------------------------------------------- Results */
.results-panel { padding: var(--s-4); min-height: 400px; }

.empty-state { text-align: center; color: var(--text-muted); padding: var(--s-8) var(--s-4); }
.empty-state .big { font-size: 46px; margin-bottom: var(--s-3); color: var(--text-muted); display: flex; justify-content: center; }
.empty-state h2 { font-family: var(--font-crt); font-size: 24px; color: var(--text-secondary); }
.empty-state p { max-width: 360px; margin: var(--s-2) auto 0; font-family: var(--font-body); }

/* Verdict readout - instrument header, accent rail, status word in pixel face */
.verdict {
  border: 1px solid var(--border); border-radius: var(--r-md); background: var(--bg-raised);
  padding: var(--s-5); margin-bottom: var(--s-5); position: relative; overflow: hidden;
}
.verdict::before {
  content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px;
  background: var(--status, var(--accent)); box-shadow: 0 0 12px var(--glow);
}
.verdict .badge {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 0; background: transparent; color: var(--status, var(--accent));
  font-family: var(--font-pixel); font-size: 12px; line-height: 1.2; text-transform: uppercase; letter-spacing: .02em;
  margin-bottom: var(--s-4); text-shadow: 0 0 10px var(--glow);
}
.verdict .badge .dot { width: 8px; height: 8px; border-radius: 0; background: currentColor; box-shadow: 0 0 8px currentColor; }
.verdict h2 { font-family: var(--font-body); font-weight: 600; font-size: 20px; line-height: 1.25; letter-spacing: -.01em; margin-bottom: var(--s-3); }
.verdict p { color: var(--text-secondary); font-family: var(--font-body); margin-bottom: var(--s-2); font-size: 14px; }
.verdict .note {
  font-size: 13px; color: var(--text-muted); margin-top: var(--s-3); font-family: var(--font-body);
  padding-top: var(--s-3); border-top: 1px dashed var(--border);
}

.section-title {
  font-family: var(--font-pixel); font-size: 10px; letter-spacing: .02em;
  color: var(--accent); text-shadow: 0 0 8px var(--glow); margin: var(--s-6) 0 var(--s-3);
  display: flex; align-items: center; gap: var(--s-3);
}
.section-title::after { content: ""; height: 1px; flex: 1; background: var(--border); }
.section-title .sub { font-family: var(--font-crt); font-size: 14px; font-weight: 400; color: var(--text-muted); letter-spacing: 0; text-transform: none; text-shadow: none; }

/* Gauge - mono numerics, hairline track */
.gauge-card { background: var(--bg-inset); border: 1px solid var(--border); border-radius: var(--r-md); padding: var(--s-4) var(--s-4) var(--s-3); }
.gauge-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: var(--s-3); }
.gauge-top .need { font-family: var(--font-crt); font-size: 20px; color: var(--status, var(--accent)); text-shadow: 0 0 8px var(--glow); }
.gauge-wrap { position: relative; padding-top: 22px; }
.gauge {
  position: relative; height: 14px; border-radius: 0;
  background: var(--bg-base); overflow: hidden; border: 1px solid var(--border);
}
.gauge-fill {
  height: 100%; width: calc(var(--pct,0) * 1%); border-radius: 0;
  background: var(--gcolor, var(--accent)); box-shadow: 0 0 10px var(--glow);
  transition: width .8s cubic-bezier(.22,1,.36,1), background .4s;
}
.gmark {
  position: absolute; top: 22px; height: 14px; width: 2px;
  transition: left .8s cubic-bezier(.22,1,.36,1);
}
.gmark::before {
  content: ""; position: absolute; top: -4px; bottom: -4px; left: 0; width: 2px; border-radius: 0;
}
.gmark-gpu::before { background: var(--text-primary); opacity: .9; }
.gmark-total::before { background: var(--text-muted); }
.gmark-gpu { border-left: 0; }
.gmark-lab {
  position: absolute; bottom: calc(100% + 6px); left: 0; transform: translateX(-50%);
  white-space: nowrap; font-family: var(--font-crt); font-size: 14px; font-weight: 400; color: var(--text-secondary);
  background: var(--bg-inset); padding: 1px 5px; border-radius: var(--r-sm);
}
.gmark-total .gmark-lab { color: var(--text-muted); }
.gmark[style*="left: 0%"] .gmark-lab, .gmark-gpu .gmark-lab { transform: translateX(-20%); }
.gmark-total .gmark-lab { transform: translateX(-80%); }
.gauge-hint { font-style: italic; color: var(--text-muted); }
.gauge-legend { display: flex; flex-wrap: wrap; gap: var(--s-4); margin-top: var(--s-3); font-size: 13px; font-family: var(--font-body); color: var(--text-muted); }
.gauge-legend .item { display: inline-flex; align-items: center; gap: 6px; }
.gauge-legend .sw { width: 10px; height: 10px; border-radius: 0; }
.gauge-legend .marker { font-weight: 600; color: var(--text-secondary); }

/* ---- Option breakdown rendered as a DENSE TABLE ----
   app.js emits .opt-grid containing .opt rows (grid: 40px 1fr auto).
   We re-cast each .opt as a ruled instrument row: status dot, model name +
   desc, monospace right-aligned memory/setting. The honest pick (.opt-current)
   gets an inset accent ring, not a floating card. No hover-lift. */
.opt-grid {
  display: grid; gap: 0;
  border: 1px solid var(--border); border-radius: var(--r-md); overflow: hidden;
}
.opt {
  display: grid; grid-template-columns: 28px 1fr auto; align-items: center; gap: var(--s-3);
  background: var(--bg-raised); border: 0;
  border-bottom: 1px solid var(--line-2);
  border-left: 2px solid var(--status, transparent);
  border-radius: 0;
  padding: 11px var(--s-4);
  transition: background .15s, box-shadow .15s, border-color .15s;
}
.opt:last-child { border-bottom: 0; }
.opt:hover { background: #101a13; }
.opt .vdot {
  width: 18px; height: 18px; border-radius: 0;
  background: transparent; color: var(--status);
  display: grid; place-items: center; font-size: 14px; font-weight: 400;
}
.opt .vdot .ic svg { width: 14px; height: 14px; }
.opt .name { font-family: var(--font-crt); font-weight: 400; font-size: 18px; letter-spacing: .01em; }
.opt .name a { color: var(--text-primary); }
.opt .name a:hover { color: var(--accent); text-decoration: none; }
.lic {
  display: inline-block; margin-left: 8px; padding: 0 7px; vertical-align: 2px;
  border-radius: var(--r-sm); border: 1px solid var(--border-hi);
  font-family: var(--font-crt); font-size: 13px; font-weight: 400; letter-spacing: .04em;
  color: var(--text-muted); text-transform: uppercase;
}
.lic.warn { color: var(--warn); border-color: var(--warn); }
.lic.gatechip { color: var(--accent); border-color: var(--accent); }
.prov {
  margin-top: 10px; padding-top: 10px; border-top: 1px dashed var(--border);
  font-size: 12px; color: var(--text-muted); line-height: 1.55; font-family: var(--font-body);
}
.opt .desc { font-size: 12px; color: var(--text-muted); margin-top: 1px; font-family: var(--font-body); }
.opt .meta { text-align: right; font-family: var(--font-crt); font-size: 16px; color: var(--text-secondary); white-space: nowrap; }
.opt .meta b { color: var(--text-primary); font-family: var(--font-crt); font-weight: 400; font-size: 18px; }
.opt .feel { font-family: var(--font-crt); font-size: 14px; color: var(--text-muted); margin-top: 1px; }
.opt[data-model] { cursor: pointer; }
.opt[data-model]:hover { background: #101a13; }
/* honest pick / currently-focused model: inset accent ring, not a lifted card */
.opt-current {
  background: rgba(67,245,127,.07);
  box-shadow: inset 2px 0 0 var(--accent), inset 0 0 0 1px var(--accent);
  border-left-color: var(--accent);
}

/* Tool cards - hairline panels, border state on hover */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px,1fr)); gap: var(--s-3); }
.tool {
  background: var(--bg-inset); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: var(--s-4);
  transition: border-color .15s;
}
.tool:hover { border-color: var(--border-hi); }
.tool .tool-head { display: flex; align-items: center; justify-content: space-between; }
.tool .tname { font-family: var(--font-crt); font-weight: 400; font-size: 18px; }
.tool .tag { font-family: var(--font-crt); font-size: 13px; font-weight: 400; text-transform: uppercase; letter-spacing: .05em; padding: 2px 8px; border-radius: var(--r-sm); border: 1px solid; }
.tool .tag.best { background: var(--ok-soft); color: var(--ok); border-color: var(--ok); }
.tool .tag.mid  { background: transparent; color: var(--text-muted); border-color: var(--border-hi); }
.tool .twhat { font-size: 13px; color: var(--text-secondary); margin: var(--s-2) 0; line-height: 1.5; font-family: var(--font-body); }
.tool .tinstall { font-family: var(--font-crt); font-size: 15px; color: var(--text-muted); display: flex; align-items: center; gap: 6px; }
.tool .tinstall .ic { font-size: 14px; }

/* Buy advice */
.buy-platform { margin-top: var(--s-5); }
.bp-head { display: flex; align-items: center; gap: 9px; }
.bp-head .ic { font-size: 18px; color: var(--text-secondary); }
.bp-head .ic.brand { color: var(--text-secondary); }
.bp-name { font-family: var(--font-crt); font-weight: 400; font-size: 20px; }
.bp-blurb { font-size: 13px; color: var(--text-muted); margin: 4px 0 var(--s-3); line-height: 1.5; font-family: var(--font-body); }
.buy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3); }
@media (max-width: 620px) { .buy-grid { grid-template-columns: 1fr; } }
.buy-card {
  background: var(--bg-inset); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: var(--s-3) var(--s-4);
}
.buy-card.empty { opacity: .7; }
.buy-card.ceiling { border-color: var(--accent-strong); }
.buy-card.ceiling .bc-head .ic { color: var(--accent); font-size: 16px; }
.bc-head { display: flex; align-items: center; justify-content: space-between; }
.bc-kind { font-family: var(--font-crt); font-size: 14px; font-weight: 400; text-transform: uppercase; letter-spacing: .08em; color: var(--text-muted); }
.bc-kind.min { color: var(--warn); } .bc-kind.comfy { color: var(--ok); }
.bc-label { font-family: var(--font-crt); font-weight: 400; font-size: 18px; margin: 6px 0; }
.bc-runs { font-size: 13px; color: var(--text-secondary); font-family: var(--font-body); }
.bc-runs b { color: var(--text-primary); }
.bc-none { font-size: 13px; color: var(--text-muted); margin: 6px 0 0; line-height: 1.5; font-family: var(--font-body); }
.bc-goals { margin: 6px 0 0; padding: 0; list-style: none; font-size: 13px; }
.bc-goals li { display: flex; justify-content: space-between; gap: 10px; padding: 3px 0; border-top: 1px dashed var(--border); font-family: var(--font-body); }
.bc-goals li:first-child { border-top: 0; }
.bc-goals b { color: var(--text-primary); font-weight: 600; text-align: right; font-family: var(--font-crt); font-size: 15px; }
.bc-more {
  margin-top: var(--s-3); background: none; border: 0; cursor: pointer; padding: 0;
  color: var(--accent); font-family: var(--font-crt); font-size: 15px; font-weight: 400;
  display: inline-flex; align-items: center; gap: 5px;
}
.bc-more .chev { font-size: 13px; transition: transform .2s; }
.bc-more.open .chev { transform: rotate(180deg); }
.bc-detail { margin-top: var(--s-3); border-top: 1px dashed var(--border); padding-top: var(--s-3); }
.bc-detail-label {
  font-family: var(--font-crt); font-size: 13px; letter-spacing: .1em;
  text-transform: uppercase; color: var(--text-muted); margin: 0 0 7px;
}
.bc-detail-label + p, ul.bc-spec + .bc-detail-label { margin-top: var(--s-3); }
ul.bc-spec {
  list-style: none; margin: 0 0 0; padding: 0;
  border: 1px solid var(--border); border-radius: var(--r-sm);
  background: var(--bg-base); overflow: hidden;
}
ul.bc-spec li {
  display: flex; align-items: center; gap: 10px; padding: 9px 11px;
  font-family: var(--font-crt); font-size: 16px; color: var(--text-primary);
  border-top: 1px solid var(--line-2);
}
ul.bc-spec li:first-child { border-top: 0; }
ul.bc-spec li .ic { font-size: 16px; color: var(--accent); flex: none; }
.bc-detail p { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin: 0; font-family: var(--font-body); }
.bc-link {
  display: inline-flex; align-items: center; gap: 7px; margin-top: var(--s-3);
  color: var(--accent); text-decoration: none; font-family: var(--font-crt); font-size: 15px;
  border: 1px solid var(--accent-strong); border-radius: var(--r-sm); padding: 6px 10px;
}
.bc-link:hover { background: var(--accent-soft); }
.bc-link .ic { font-size: 13px; }
.bc-link-meta { color: var(--text-muted); font-size: 13px; }

/* Command block - terminal */
.cmd-intro { font-size: 14px; color: var(--text-secondary); margin: var(--s-2) 0 var(--s-3); font-family: var(--font-body); }
.cmd { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-3); }
@media (max-width: 620px) { .cmd { grid-template-columns: 1fr; } }
.cmd-box { background: var(--bg-base); border: 1px solid var(--border); border-radius: var(--r-md); overflow: hidden; }
.cmd-box .cmd-label { font-family: var(--font-crt); font-size: 14px; font-weight: 400; color: var(--text-muted); padding: 8px 13px 0; display:flex; justify-content:space-between; align-items:center; text-transform: uppercase; letter-spacing: .06em; }
.cmd-box pre { padding: 6px 13px 12px; overflow-x: auto; }
.cmd-box code { font-family: var(--font-crt); font-size: 17px; color: var(--accent); }
.copy-btn {
  background: var(--bg-inset); border: 1px solid var(--border); color: var(--text-secondary);
  border-radius: var(--r-sm); padding: 3px 9px; font-family: var(--font-crt); font-size: 14px; font-weight: 400;
  display: inline-flex; align-items: center; gap: 5px;
}
.copy-btn:hover { color: var(--text-primary); border-color: var(--border-hi); }
.copy-btn.done { color: var(--ok); border-color: var(--ok); }
.copy-btn .ic { font-size: 13px; }

/* "Why this speed?" roofline - PROMOTED to a prominent centerpiece panel.
   app.js still emits <details class="disc viz-disc" open>; we render it as a
   flat hairline panel with a graph surface, not a tucked-away disclosure. */
.viz-disc {
  margin-top: var(--s-6); background: var(--bg-raised);
  border: 1px solid var(--border-hi); box-shadow: 0 0 0 1px var(--accent-soft);
}
.viz-disc > summary {
  font-family: var(--font-pixel); font-size: 10px; color: var(--accent); text-shadow: 0 0 8px var(--glow);
  padding: var(--s-4) var(--s-4) var(--s-3); border-bottom: 1px solid var(--line-2); cursor: default;
  text-transform: uppercase; letter-spacing: .02em;
}
.viz-disc > summary .chev { display: none; }   /* centerpiece: not a collapse affordance */
.viz-disc > summary .sub-inline { font-family: var(--font-crt); font-weight: 400; color: var(--text-muted); font-size: 14px; margin-left: 8px; letter-spacing: 0; text-transform: none; text-shadow: none; }
.viz-disc > summary .sum-ic { font-size: 14px; }
.viz-disc > .disc-body { padding: var(--s-4); }
.roofline-wrap {
  border: 1px solid var(--line-2); background: var(--bg-inset);
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 40px 32px; padding: var(--s-2);
}
.roofline-wrap svg { width: 100%; height: auto; display: block; }
.rl-grid { stroke: var(--line-2); stroke-width: 1; opacity: .7; }
.rl-tick { fill: var(--text-muted); font: 400 13px var(--font-crt); }
.rl-axis { fill: var(--text-secondary); font: 400 14px var(--font-crt); }
.rl-dot { opacity: .55; transition: r .1s, opacity .1s; cursor: pointer; }
.rl-dot:hover { opacity: 1; r: 4.5; }
.rl-you { cursor: pointer; }
.rl-tip {
  position: absolute; z-index: 20; pointer-events: none;
  background: var(--bg-raised); border: 1px solid var(--border-hi);
  border-radius: var(--r-sm); padding: 7px 10px; font-family: var(--font-crt); font-size: 15px; line-height: 1.4;
  color: var(--text-primary); box-shadow: var(--shadow-lg); max-width: 220px;
}
.rl-tip-sub { color: var(--text-muted); }
/* roofline series in the SAME neutral tone family (greens/inks); accent = you */
.rl-p1 { fill: #34503f; }
.rl-p8 { fill: #4d6e58; }
.rl-p14 { fill: #6f9580; }
.rl-roof { stroke: var(--warn); stroke-width: 1.8; stroke-dasharray: 4 5; opacity: .9; }
.rl-band { stroke: var(--accent); stroke-width: 5; opacity: .35; stroke-linecap: butt; }
.rl-you { fill: var(--accent); stroke: var(--bg-base); stroke-width: 1.5; }
.rl-you-label { fill: var(--accent); font: 400 16px var(--font-crt); }
.rl-legend { display: flex; flex-wrap: wrap; gap: var(--s-4); margin-top: var(--s-3); font-family: var(--font-body); font-size: 12px; color: var(--text-muted); }
.rl-legend .item { display: inline-flex; align-items: center; gap: 6px; }
.rl-legend .sw { width: 10px; height: 10px; border-radius: 0; }
.rl-p1-sw { background: #34503f; } .rl-p8-sw { background: #4d6e58; } .rl-p14-sw { background: #6f9580; }
.rl-roof-sw { background: var(--warn); border-radius: 0; height: 3px; width: 14px; }
.rl-you-sw { background: var(--accent); box-shadow: 0 0 6px var(--glow); }
.viz-caption { font-size: 13px; color: var(--text-secondary); line-height: 1.6; margin-top: var(--s-3); font-family: var(--font-body); }

/* Multi-goal overview - hairline panels, inset ring on hover, no lift */
.goal-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: var(--s-3); }
.goal-card {
  background: var(--bg-inset); border: 1px solid var(--border);
  border-left: 2px solid var(--status, var(--border)); border-radius: var(--r-md);
  padding: var(--s-4); cursor: pointer;
  transition: box-shadow .15s, background .15s;
}
.goal-card:hover { background: #101a13; box-shadow: inset 0 0 0 1px var(--border-hi); }
.goal-card .badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 0; background: transparent; color: var(--status, var(--accent));
  font-family: var(--font-pixel); font-size: 9px; line-height: 1.3; text-transform: uppercase; letter-spacing: .02em;
}
.goal-card .badge .dot { width: 7px; height: 7px; border-radius: 0; background: currentColor; box-shadow: 0 0 6px currentColor; }
.goal-name { font-family: var(--font-crt); font-weight: 400; font-size: 18px; line-height: 1.2; margin-top: var(--s-3); }
.goal-pick { font-family: var(--font-crt); font-size: 16px; color: var(--text-secondary); margin-top: 4px; display: flex; align-items: center; gap: 6px; }
.goal-pick .ic { font-size: 13px; color: var(--accent); }
.goal-need { font-family: var(--font-crt); font-size: 15px; color: var(--text-muted); margin-top: 2px; }
.goal-more { font-family: var(--font-crt); font-size: 15px; font-weight: 400; color: var(--accent); margin-top: var(--s-3); }
.back-link {
  background: var(--bg-inset); border: 1px solid var(--border); color: var(--text-secondary);
  border-radius: var(--r-sm); padding: 6px 14px; font-family: var(--font-crt); font-size: 15px; font-weight: 400;
  margin-bottom: var(--s-4); display: inline-flex; align-items: center; gap: 6px;
}
.back-link:hover { color: var(--text-primary); border-color: var(--border-hi); }
.back-link .ic { font-size: 13px; transform: scaleX(-1); }
.goal-lines { list-style: none; padding: 0; margin: var(--s-2) 0 0; }
.goal-lines li {
  display: flex; justify-content: space-between; gap: var(--s-3);
  font-family: var(--font-body); font-size: 13px; color: var(--text-secondary); padding: 3px 0;
  border-bottom: 1px dashed var(--border);
}
.goal-lines li:last-child { border-bottom: none; }
.goal-lines li b { color: var(--text-primary); font-weight: 600; text-align: right; font-family: var(--font-crt); font-size: 15px; }
.goal-lines li i { color: var(--text-muted); font-style: normal; font-size: 12px; }

/* Live single-model lookup card */
.lookup-card {
  border: 1px solid var(--border); border-left: 2px solid var(--status, var(--accent));
  border-radius: var(--r-md); background: var(--bg-inset);
  padding: var(--s-4) var(--s-5); margin-bottom: var(--s-5);
}
.lookup-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: var(--s-2); }
.live-tag {
  font-family: var(--font-crt); font-size: 14px; font-weight: 400; text-transform: uppercase; letter-spacing: .06em;
  color: var(--accent); border: 1px dashed var(--accent); border-radius: var(--r-sm);
  padding: 3px 10px;
}
.lookup-explain { color: var(--text-secondary); font-size: 14px; font-family: var(--font-body); }
.lookup-meta { display: flex; gap: var(--s-4); margin-top: var(--s-2); font-family: var(--font-crt); font-size: 15px; color: var(--text-secondary); }
.lookup-banner {
  display: flex; align-items: center; gap: var(--s-3); flex-wrap: wrap;
  background: var(--accent-soft); border: 1px solid var(--accent);
  border-radius: var(--r-md); padding: var(--s-3) var(--s-4); margin-bottom: var(--s-4);
}
.lookup-banner p { color: var(--text-secondary); font-size: 13px; margin: 0; font-family: var(--font-body); }
.lookup-banner.estimate { background: var(--warn-soft); border-color: var(--warn); }
.lookup-banner.estimate .live-tag { color: var(--warn); border-color: var(--warn); }
#repo-field.required input { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

/* Ask a follow-up (the model brick) */
.ask-row { display: flex; gap: var(--s-2); }
.ask-row input {
  flex: 1; background: var(--bg-inset); border: 1px solid var(--border);
  border-radius: var(--r-md); padding: 11px 14px; font-family: var(--font-crt); font-size: 18px;
}
.ask-btn {
  flex: none; width: 46px; border: 1px solid var(--accent); border-radius: var(--r-md);
  background: var(--accent);
  color: #04130a; display: grid; place-items: center;
  box-shadow: var(--glowshadow);
  transition: filter .15s, box-shadow .15s;
}
.ask-btn:hover { filter: brightness(1.08); box-shadow: 0 0 20px var(--glow); }
.ask-btn .ic { font-size: 16px; }
.ask-chips { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-3); }
.ask-chip {
  background: var(--bg-inset); border: 1px solid var(--border);
  color: var(--text-secondary); border-radius: var(--r-sm);
  padding: 6px 13px; font-family: var(--font-crt); font-size: 15px; font-weight: 400;
  transition: border-color .15s, color .15s, background .15s;
}
.ask-chip:hover { border-color: var(--accent); color: var(--text-primary); background: var(--accent-soft); }

.ask-answer { margin-top: var(--s-4); }
.ans-card {
  background: var(--bg-inset); border: 1px solid var(--border);
  border-left: 2px solid var(--accent); border-radius: var(--r-md);
  padding: var(--s-4) var(--s-5);
}
.ans-card h3 { font-family: var(--font-crt); font-size: 19px; font-weight: 400; margin-bottom: var(--s-2); }
.ans-card p { color: var(--text-secondary); font-family: var(--font-body); font-size: 14px; line-height: 1.6; }
.ans-next {
  display: flex; align-items: center; gap: var(--s-2); margin-top: var(--s-3);
  font-family: var(--font-crt); font-size: 16px; font-weight: 400; color: var(--accent);
}
.ans-next .ic { font-size: 14px; flex: none; }
.ans-card.ans-error { border-left-color: var(--no); }
.ans-card.ans-error h3 { color: var(--no); }
.ans-card.ans-error p { color: var(--text-secondary); font-size: 13px; word-break: break-word; }
.ans-loading { display: flex; align-items: center; gap: var(--s-2); color: var(--text-muted); font-family: var(--font-crt); font-size: 16px; padding: var(--s-2) 0; flex-wrap: wrap; }
.ans-cold { font-size: 12px; color: var(--text-muted); opacity: .75; }
.tick-note { font-size: 12px; color: var(--text-muted); opacity: .8; }
#parse-hint .spinner, .ans-loading .spinner { display: inline-block; vertical-align: -2px; margin-right: 6px; }
.spinner {
  width: 15px; height: 15px; flex: none; border-radius: 50%;
  border: 2px solid var(--border-hi); border-top-color: var(--accent);
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Footer */
.foot { text-align: left; color: var(--text-muted); font-family: var(--font-crt); font-size: 16px; margin-top: var(--s-7); padding-top: var(--s-4); border-top: 1px solid var(--border); line-height: 1.55; }
.foot p { font-family: var(--font-body); font-size: 13px; }
.foot b { color: var(--text-secondary); }

/* Reveal animation (kept; subtle) */
.reveal { animation: reveal .4s cubic-bezier(.22,1,.36,1) both; }
@keyframes reveal { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  body::after { display: none; }
}

@media (max-width: 900px) {
  .hero h1 { font-size: 34px; }
}