/* Protein structure metrics tutorial — self-contained dark theme. */
:root {
  --bg: #060912;
  --bg-alt: #0b1020;
  --panel: #111827;
  --panel-2: #0e1626;
  --ink: #e8edf7;
  --muted: #9aa7bd;
  --line: rgba(148, 163, 184, 0.16);
  --cmp: #f472b6;   /* comparison metrics accent */
  --conf: #34d399;  /* confidence metrics accent */
  --accent: #60a5fa;
  --warn: #fb923c;
  --radius: 14px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { line-height: 1.15; margin: 0; letter-spacing: -0.01em; }
a { color: var(--accent); text-decoration: none; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: clamp(3.5rem, 9vw, 7rem) 1.5rem clamp(3rem, 7vw, 5rem);
  background:
    radial-gradient(1100px 500px at 78% -10%, rgba(96, 165, 250, 0.22), transparent 60%),
    radial-gradient(900px 500px at 10% 0%, rgba(52, 211, 153, 0.14), transparent 55%),
    linear-gradient(180deg, #0a1020, var(--bg));
  border-bottom: 1px solid var(--line);
}
.hero-inner { max-width: 960px; margin: 0 auto; }
.eyebrow {
  text-transform: uppercase; letter-spacing: 0.18em; font-size: 0.74rem;
  color: var(--accent); margin: 0 0 1rem; font-weight: 600;
}
.hero h1 { font-size: clamp(2.3rem, 6vw, 4rem); font-weight: 800; }
.hero h1 span {
  background: linear-gradient(100deg, var(--conf), var(--accent), var(--cmp));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { font-size: clamp(1.05rem, 2.2vw, 1.3rem); color: var(--muted); max-width: 720px; margin: 1.4rem 0 2rem; }
.hero-actions { display: flex; gap: 0.8rem; flex-wrap: wrap; }

.button {
  display: inline-block; padding: 0.7rem 1.3rem; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; border: 1px solid transparent; cursor: pointer;
  transition: transform 0.12s ease, background 0.2s ease, border-color 0.2s ease;
}
.button:hover { transform: translateY(-1px); }
.button.primary { background: var(--accent); color: #04122b; }
.button.ghost { background: transparent; border-color: var(--line); color: var(--ink); }
.button.small { padding: 0.5rem 0.9rem; font-size: 0.85rem; }

/* ---------- bands ---------- */
.band { padding: clamp(3rem, 7vw, 5rem) 1.5rem; }
.band.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.wrap { max-width: 1120px; margin: 0 auto; }
.section-title { font-size: clamp(1.6rem, 4vw, 2.3rem); font-weight: 750; }
.section-sub { color: var(--muted); max-width: 760px; margin: 0.8rem 0 2rem; }

/* ---------- big idea ---------- */
.split-idea { display: grid; grid-template-columns: 1fr 1fr; gap: 1.4rem; }
.idea-card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.6rem;
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
}
.idea-card.comparison { border-top: 3px solid var(--cmp); }
.idea-card.confidence { border-top: 3px solid var(--conf); }
.idea-tag {
  display: inline-block; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.14em;
  font-weight: 700; padding: 0.2rem 0.6rem; border-radius: 999px; margin-bottom: 0.8rem;
}
.comparison .idea-tag { background: rgba(244, 114, 182, 0.16); color: var(--cmp); }
.confidence .idea-tag { background: rgba(52, 211, 153, 0.16); color: var(--conf); }
.idea-card h3 { font-size: 1.25rem; margin-bottom: 0.6rem; }
.idea-card p { color: var(--muted); margin: 0.5rem 0; }
.idea-foot { font-size: 0.9rem; color: var(--ink); background: rgba(148, 163, 184, 0.08); padding: 0.7rem 0.9rem; border-radius: 10px; margin-top: 1rem; }

/* ---------- structural-biology primer (expandable) ---------- */
.primer { border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(180deg, var(--panel), var(--panel-2)); overflow: hidden; }
.primer > summary { cursor: pointer; padding: 1.1rem 1.3rem; font-weight: 700; font-size: clamp(1rem, 2.4vw, 1.15rem); color: var(--ink); list-style: none; user-select: none; display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.primer > summary::-webkit-details-marker { display: none; }
.primer > summary::after { content: "▸"; margin-left: auto; color: var(--muted); transition: transform 0.2s ease; font-size: 0.9em; }
.primer[open] > summary::after { transform: rotate(90deg); }
.primer[open] > summary { border-bottom: 1px solid var(--line); }
.primer-badge { font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 700; padding: 0.2rem 0.55rem; border-radius: 999px; background: rgba(96,165,250,0.16); color: var(--accent); }
.primer-hint { font-size: 0.82rem; font-weight: 500; color: var(--muted); }
.primer-body { padding: 1.3rem clamp(1.1rem, 3vw, 1.9rem) 1.7rem; }
.primer-body p { color: var(--muted); font-size: 0.95rem; }
.primer-body strong { color: var(--ink); }
.primer-lead { font-size: 1rem !important; }
.primer-step { margin: 1.5rem 0 0.4rem; font-size: 1.02rem; color: var(--ink); font-weight: 700; display: flex; gap: 0.55rem; align-items: baseline; }
.primer-step .n { font-family: var(--mono); color: var(--accent); font-size: 0.85rem; }
.primer-figs { display: grid; grid-template-columns: repeat(auto-fit, minmax(238px, 1fr)); gap: 1rem; margin: 1.4rem 0; }
.primer-fig { border: 1px solid var(--line); border-radius: 12px; background: #0a1020; padding: 0.9rem 0.9rem 1rem; }
.primer-fig svg { display: block; width: 100%; height: auto; }
.primer-fig figcaption { font-size: 0.8rem; color: var(--muted); margin-top: 0.65rem; line-height: 1.5; }
.primer-fig figcaption b { color: var(--ink); font-weight: 600; }
.primer-key { display: flex; flex-wrap: wrap; gap: 0.5rem 1.1rem; margin: 0.9rem 0 0; font-size: 0.82rem; color: var(--muted); }
.primer-key span { display: inline-flex; align-items: center; gap: 0.4rem; }
.primer-key i { width: 20px; height: 4px; border-radius: 999px; display: inline-block; }
.primer-key i.dot { width: 10px; height: 10px; border-radius: 50%; }

/* ---------- metric dictionary ---------- */
.metric-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 1.2rem; }
.metric-card {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem;
  background: var(--panel); display: flex; flex-direction: column; gap: 0.55rem;
}
.metric-card.featured { border-color: rgba(52, 211, 153, 0.4); box-shadow: 0 0 0 1px rgba(52, 211, 153, 0.12) inset; }
.metric-head { display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.metric-head h3 { font-size: 1.15rem; }
.dir { margin-left: auto; font-size: 0.8rem; color: var(--muted); font-weight: 600; }
.badge { font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 700; padding: 0.15rem 0.5rem; border-radius: 999px; }
.badge.cmp { background: rgba(244, 114, 182, 0.16); color: var(--cmp); }
.badge.conf { background: rgba(52, 211, 153, 0.16); color: var(--conf); }
.metric-card p { margin: 0; color: var(--muted); font-size: 0.94rem; }
.eq {
  color: #dce6ff; background: #0a1020; border: 1px solid var(--line); border-radius: 10px;
  padding: 0.55rem 0.7rem; overflow-x: auto; overflow-y: hidden; text-align: center;
}
.eq + .eq { margin-top: 0.5rem; }
.eq math { font-size: 1.18em; color: #e6eeff; }
.eq.small { padding: 0.4rem 0.6rem; }
.eq.small math { font-size: 1em; color: #c6d4ee; }
.eq.tight math { font-size: 0.98em; }
.eq math { font-family: "STIX Two Math", "Latin Modern Math", "Cambria Math", "Times New Roman", serif; }
/* keep sums/integrals compact and give the scroll fallback a subtle cue */
.eq::-webkit-scrollbar { height: 6px; }
.eq::-webkit-scrollbar-thumb { background: rgba(148,163,184,0.35); border-radius: 999px; }
.behaviour { color: var(--ink) !important; font-size: 0.88rem !important; border-left: 2px solid var(--accent); padding-left: 0.7rem; }

/* per-card plain-language intuition (adapted from the field-manual signal dictionary) */
.intuition { border: 1px solid var(--line); border-radius: 10px; background: #0a1020; overflow: hidden; }
.intuition > summary { cursor: pointer; list-style: none; user-select: none; display: flex; align-items: center; gap: 0.5rem; padding: 0.5rem 0.7rem; font-size: 0.8rem; font-weight: 700; letter-spacing: 0.02em; color: var(--accent); }
.intuition > summary::-webkit-details-marker { display: none; }
.intuition > summary::before { content: "💡"; font-size: 0.92em; filter: saturate(0.9); }
.intuition > summary::after { content: "▸"; margin-left: auto; color: var(--muted); transition: transform 0.2s ease; font-size: 0.9em; }
.intuition[open] > summary::after { transform: rotate(90deg); }
.intuition[open] > summary { border-bottom: 1px solid var(--line); }
.intuition.cmp > summary { color: var(--cmp); }
.intuition.conf > summary { color: var(--conf); }
.intuition-body { padding: 0.75rem 0.85rem; }
.intuition-body p { color: #cdd7ea !important; font-size: 0.9rem !important; line-height: 1.58; }
.intuition-body p + p { margin-top: 0.55rem !important; }
.intuition-body strong { color: var(--ink); }
.intuition-body .ask { color: var(--ink); font-style: italic; }

/* formula symbol legend (section-level, above the metric grid) */
.notation { border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(180deg, var(--panel), var(--panel-2)); overflow: hidden; margin-bottom: 1.4rem; }
.notation > summary { cursor: pointer; padding: 0.9rem 1.2rem; font-weight: 700; font-size: clamp(0.98rem, 2.2vw, 1.1rem); color: var(--ink); list-style: none; user-select: none; display: flex; align-items: center; gap: 0.6rem; flex-wrap: wrap; }
.notation > summary::-webkit-details-marker { display: none; }
.notation > summary::after { content: "▸"; margin-left: auto; color: var(--muted); transition: transform 0.2s ease; font-size: 0.9em; }
.notation[open] > summary::after { transform: rotate(90deg); }
.notation[open] > summary { border-bottom: 1px solid var(--line); }
.notation-badge { font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.12em; font-weight: 700; padding: 0.2rem 0.55rem; border-radius: 999px; background: rgba(96,165,250,0.16); color: var(--accent); }
.notation-hint { font-size: 0.82rem; font-weight: 500; color: var(--muted); }
.notation-body { padding: 1.1rem clamp(1.1rem, 3vw, 1.6rem) 1.4rem; }
.notation-lead { color: var(--muted); font-size: 0.92rem; margin: 0 0 1.2rem; }
.notation-lead .sym { color: #e6eeff; }
.notation-groups { display: grid; grid-template-columns: repeat(auto-fit, minmax(270px, 1fr)); gap: 1.2rem 1.7rem; }
.notation-group h4 { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.11em; color: var(--accent); margin: 0 0 0.6rem; font-weight: 700; display: flex; align-items: baseline; gap: 0.5rem; flex-wrap: wrap; }
.notation-group .grp-note { text-transform: none; letter-spacing: 0; color: var(--conf); font-size: 0.68rem; font-weight: 600; }
.notation-group dl { margin: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.notation-group dl > div { display: grid; grid-template-columns: minmax(54px, auto) 1fr; gap: 0.75rem; align-items: baseline; }
.notation-group dt { color: #e6eeff; }
.notation-group dd { margin: 0; color: var(--muted); font-size: 0.85rem; line-height: 1.5; }
.notation-group dd strong { color: var(--ink); }
.sym { font-family: "STIX Two Math", "Latin Modern Math", "Cambria Math", "Times New Roman", serif; color: #dce6ff; white-space: nowrap; }
.notation-group dd .sym { font-size: 0.95em; }

/* typical-value ranges inside each metric card */
.ranges { margin-top: 0.2rem; border-top: 1px dashed var(--line); padding-top: 0.7rem; }
.ranges-label { display: block; font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.11em; color: var(--muted); font-weight: 700; margin-bottom: 0.5rem; }
.range-tiers { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.34rem; }
.range-tiers li { display: grid; grid-template-columns: minmax(74px, auto) 1fr; align-items: baseline; gap: 0.55rem; font-size: 0.82rem !important; color: var(--muted) !important; }
.range-tiers b { font-family: var(--mono); font-size: 0.79rem; color: var(--ink); font-weight: 600; white-space: nowrap; padding-left: 0.95rem; position: relative; }
.range-tiers b::before { content: ""; position: absolute; left: 0; top: 0.4em; width: 8px; height: 8px; border-radius: 50%; background: var(--tier, var(--muted)); box-shadow: 0 0 0 2px rgba(148,163,184,0.12); }
.range-tiers li.t-lo { --tier: #f87171; }
.range-tiers li.t-mid { --tier: #fbbf24; }
.range-tiers li.t-good { --tier: #34d399; }
.range-tiers li.t-top { --tier: #22d3ee; }
.ranges-foot { font-size: 0.76rem !important; color: var(--muted) !important; margin-top: 0.55rem !important; font-style: italic; }

/* ---------- picker ---------- */
.picker { margin-bottom: 1.6rem; }
.picker-row { display: flex; align-items: center; gap: 0.9rem; flex-wrap: wrap; margin-bottom: 0.4rem; }
.picker-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); font-weight: 700; min-width: 84px; }
.pill-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.pill {
  border: 1px solid var(--line); background: var(--panel); color: var(--ink);
  padding: 0.45rem 0.9rem; border-radius: 999px; cursor: pointer; font-size: 0.88rem; font-weight: 600;
  transition: all 0.15s ease;
}
.pill:hover { border-color: var(--accent); }
.pill.active { background: var(--accent); color: #04122b; border-color: var(--accent); }
.pill.small { padding: 0.3rem 0.7rem; font-size: 0.8rem; }
.picker-desc { color: var(--muted); font-size: 0.92rem; margin: 0.2rem 0 1rem; }
.prov { display: inline-block; font-size: 0.66rem; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.12rem 0.5rem; border-radius: 999px; margin-right: 0.35rem; vertical-align: middle; }
.prov.real { background: rgba(52, 211, 153, 0.16); color: var(--conf); border: 1px solid rgba(52,211,153,0.35); }
.prov.synth { background: rgba(148, 163, 184, 0.14); color: var(--muted); border: 1px solid var(--line); }
.picker-desc.variant { color: var(--ink); background: rgba(96, 165, 250, 0.08); border-radius: 10px; padding: 0.7rem 0.9rem; border-left: 2px solid var(--accent); }

/* ---------- loader panel ---------- */
.loader-panel { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-2); margin: 0 0 1.6rem; overflow: hidden; }
.loader-panel > summary { cursor: pointer; padding: 0.8rem 1.1rem; font-weight: 650; font-size: 0.92rem; color: var(--ink); list-style: none; user-select: none; }
.loader-panel > summary::-webkit-details-marker { display: none; }
.loader-panel[open] > summary { border-bottom: 1px solid var(--line); }
.loader-body { padding: 1.1rem; }
.loader-intro { color: var(--muted); font-size: 0.9rem; margin: 0 0 1rem; }
.loader-example { display: flex; align-items: center; gap: 0.7rem; flex-wrap: wrap; margin-bottom: 1rem; }
.loader-hint, .loader-note { color: var(--muted); font-size: 0.82rem; }
.loader-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 0.8rem; margin-bottom: 0.9rem; }
.file-field { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.85rem; font-weight: 600; color: var(--ink); }
.file-field small { font-weight: 400; color: var(--muted); font-size: 0.75rem; }
.file-field input[type="file"] { font-size: 0.78rem; color: var(--muted); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 0.4rem; cursor: pointer; }
.file-field input[type="file"]::file-selector-button { background: var(--panel-2); color: var(--ink); border: 1px solid var(--line); border-radius: 6px; padding: 0.25rem 0.6rem; margin-right: 0.5rem; cursor: pointer; }
.loader-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; align-items: center; margin-bottom: 0.6rem; }
.load-name { flex: 1; min-width: 160px; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 0.45rem 0.7rem; color: var(--ink); font-size: 0.88rem; }
.load-name:focus { outline: none; border-color: var(--accent); }
.load-status { font-size: 0.85rem; margin: 0.4rem 0; min-height: 1.1em; color: var(--muted); }
.load-status.ok { color: var(--conf); }
.load-status.err { color: var(--warn); }
.loader-note { margin: 0.4rem 0 0; }
.loader-note code { background: rgba(148,163,184,0.14); padding: 0.05rem 0.35rem; border-radius: 5px; font-size: 0.9em; }

/* ---------- lab grid ---------- */
.lab-top { display: grid; grid-template-columns: 1.35fr 0.85fr; gap: 1.4rem; align-items: start; }
.lab-view { display: flex; flex-direction: column; }
.lab-panels { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; align-items: start; margin-top: 1.4rem; }
.viewer-wrap { position: relative; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #070a14; }
/* color-by sits directly under the render it recolors */
.colorby { margin-top: 0.9rem; border: 1px solid var(--line); border-radius: var(--radius); padding: 0.85rem 1rem; background: var(--panel); }
.colorby-row { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; align-items: center; }
.colorby-note { font-size: 0.82rem; color: var(--muted); margin: 0.7rem 0 0; line-height: 1.5; }
#viewport { display: block; width: 100%; height: 440px; cursor: grab; }
#viewport:active { cursor: grabbing; }
.viewer-legend { position: absolute; left: 10px; bottom: 10px; display: flex; flex-direction: column; gap: 6px; }
.legend-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.legend-chip { display: inline-flex; align-items: center; gap: 5px; font-size: 0.74rem; color: var(--ink); background: rgba(6, 9, 18, 0.72); padding: 3px 7px; border-radius: 6px; }
.legend-chip i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.legend-chip.ghost { color: var(--muted); }
.legend-grad { display: inline-flex; align-items: center; gap: 5px; background: rgba(6, 9, 18, 0.72); padding: 3px 7px; border-radius: 6px; }
.legend-grad i { width: 68px; height: 9px; border-radius: 999px; display: inline-block; }
.legend-grad small { font-size: 0.68rem; color: var(--ink); }
.legend-note { font-size: 0.68rem; color: var(--muted); background: rgba(6, 9, 18, 0.72); padding: 3px 7px; border-radius: 6px; }
.color-modes { flex-wrap: wrap; }
.ctl-toggles { align-items: flex-start; }

/* ---------- controls ---------- */
.controls { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem; background: var(--panel); }
.ctl-group { margin-bottom: 1rem; }
.ctl-title { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); font-weight: 700; margin: 0 0 0.5rem; }
.ctl-group label { display: grid; grid-template-columns: 18px 1fr 46px; align-items: center; gap: 0.6rem; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.35rem; }
.ctl-group output { font-family: var(--mono); font-size: 0.82rem; color: var(--ink); text-align: right; }
.ctl-hint { font-size: 0.8rem; color: var(--muted); margin: 0.2rem 0 0; }
.rep-select { width: 100%; background: var(--panel-2); color: var(--ink); border: 1px solid var(--line); border-radius: 9px; padding: 0.5rem 0.7rem; font-size: 0.9rem; font-weight: 600; cursor: pointer; }
.rep-select:focus { outline: none; border-color: var(--accent); }
.rep-select option { background: var(--panel); color: var(--ink); }
input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; height: 5px; border-radius: 999px; background: rgba(148, 163, 184, 0.25); outline: none; }
input[type="range"]::-webkit-slider-thumb { -webkit-appearance: none; width: 15px; height: 15px; border-radius: 50%; background: var(--accent); cursor: pointer; border: 2px solid #04122b; }
input[type="range"]::-moz-range-thumb { width: 15px; height: 15px; border-radius: 50%; background: var(--accent); cursor: pointer; border: 2px solid #04122b; }
.ctl-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; margin: 0.4rem 0 1rem; }
.ctl-toggles { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; align-items: center; border-top: 1px solid var(--line); padding-top: 0.9rem; }
.toggle-set { display: flex; align-items: center; gap: 0.5rem; font-size: 0.82rem; color: var(--muted); }
.checkbox { display: flex; align-items: center; gap: 0.4rem; font-size: 0.85rem; color: var(--muted); cursor: pointer; }

/* ---------- metric panels ---------- */
.panel { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.2rem; background: var(--panel); margin-bottom: 1.2rem; }
.confidence-panel { border-top: 3px solid var(--conf); }
.panel:not(.confidence-panel) { border-top: 3px solid var(--cmp); }
.panel-head { display: flex; align-items: baseline; justify-content: space-between; gap: 0.6rem; flex-wrap: wrap; margin-bottom: 0.9rem; }
.panel-head h3 { font-size: 1.1rem; }
.panel-tag { font-size: 0.72rem; color: var(--muted); font-family: var(--mono); }
.panel-tag.cmp { color: var(--cmp); }
.panel-tag.conf { color: var(--conf); }
.metric-rows { display: flex; flex-direction: column; gap: 0.55rem; }
.mrow { display: grid; grid-template-columns: 130px 1fr 62px; align-items: center; gap: 0.7rem; }
.mlabel { font-size: 0.85rem; color: var(--muted); }
.mlabel em { color: var(--ink); font-style: normal; font-weight: 600; }
.mbar { height: 8px; background: rgba(148, 163, 184, 0.16); border-radius: 999px; overflow: hidden; }
.mbar i { display: block; height: 100%; width: 0%; border-radius: 999px; background: linear-gradient(90deg, var(--accent), var(--conf)); transition: width 0.09s linear; }
.confidence-panel .mbar i { background: linear-gradient(90deg, var(--conf), #a7f3d0); }
.panel:not(.confidence-panel) .mbar i { background: linear-gradient(90deg, var(--cmp), #fbcfe8); }
.mval { font-family: var(--mono); font-size: 0.9rem; text-align: right; color: var(--ink); font-weight: 600; }

.gap-note { font-size: 0.83rem; margin: 0.9rem 0 0.3rem; padding: 0.6rem 0.8rem; border-radius: 10px; }
.gap-note.ok { background: rgba(52, 211, 153, 0.1); color: #9decc5; }
.gap-note.warn { background: rgba(251, 146, 60, 0.12); color: #fbc79a; }
.gap-note.info { background: rgba(96, 165, 250, 0.1); color: #bcd6fb; }
.gap-line { font-size: 0.82rem; color: var(--muted); margin: 0.3rem 0 0; }
.gap-line strong { font-family: var(--mono); color: var(--ink); }

/* ---------- PAE ---------- */
.pae-block { margin-top: 1.1rem; border-top: 1px solid var(--line); padding-top: 1rem; }
.pae-title { font-size: 0.82rem; color: var(--muted); margin: 0 0 0.6rem; text-transform: uppercase; letter-spacing: 0.08em; font-weight: 700; }
#pae-canvas { width: 220px; max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 8px; image-rendering: pixelated; display: block; }
.pae-scale { display: flex; align-items: center; gap: 0.5rem; font-size: 0.72rem; color: var(--muted); margin-top: 0.5rem; }
.pae-ramp { flex: 1; height: 8px; border-radius: 999px; background: linear-gradient(90deg, rgb(15,90,70), rgb(250,240,245)); }

/* ---------- try box + notes ---------- */
.try-box { margin-top: 1.6rem; border: 1px solid var(--line); border-radius: var(--radius); padding: 1.3rem 1.5rem; background: linear-gradient(180deg, var(--panel), var(--panel-2)); }
.try-box h3 { font-size: 1.1rem; margin-bottom: 0.7rem; }
.try-box ul, .notes ul { margin: 0; padding-left: 1.1rem; color: var(--muted); }
.try-box li, .notes li { margin-bottom: 0.55rem; }
.try-box strong { color: var(--ink); }
.notes { max-width: 860px; }
.notes .section-title { margin-bottom: 1rem; }

/* ---------- footer ---------- */
.foot { padding: 2.2rem 1.5rem; text-align: center; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--line); }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .split-idea { grid-template-columns: 1fr; }
  .lab-top { grid-template-columns: 1fr; }
  .lab-panels { grid-template-columns: 1fr; }
  .controls { margin-top: 1rem; }
  #viewport { height: 380px; }
}
@media (max-width: 480px) {
  .mrow { grid-template-columns: 110px 1fr 54px; }
  .ctl-group label { grid-template-columns: 16px 1fr 40px; }
}