/* ================================================================
   PlantPhrase demo — visual design
   ================================================================ */

/* Load-bearing: must stay above every class/id display rule. */
[hidden]{display:none !important;}

/* ----------------------------------------------------------------
   Design tokens
   ---------------------------------------------------------------- */
:root{
  /* Surface */
  --bg:#f7f6f3;--bg-alt:#efeee9;
  --fg:#1c1917;--fg-secondary:#57534e;--fg-muted:#a8a29e;
  --card-bg:#ffffff;--card-border:#e7e5e4;
  --stage-bg:#f0f7f1;--stage-border:#c4ddc8;
  --ring-track:#e7e5e4;

  /* Accent / brand */
  --accent:#15803d;--accent-soft:#dcfce7;--accent-focus:#166534;

  /* Category palette – light */
  --cat-healthy:#16a34a;--cat-healthy-soft:#dcfce7;--cat-healthy-text:#14532d;
  --cat-late-blight:#dc2626;--cat-late-blight-soft:#fee2e2;--cat-late-blight-text:#7f1d1d;
  --cat-early-blight:#d97706;--cat-early-blight-soft:#fef3c7;--cat-early-blight-text:#78350f;
  --cat-septoria:#c2410c;--cat-septoria-soft:#ffedd5;--cat-septoria-text:#7c2d12;
  /* Verdict-card wash — barely-there tint, not a full fill */
  --cat-healthy-wash:#f7fdf8;--cat-late-blight-wash:#fdf8f8;
  --cat-early-blight-wash:#fffcf5;--cat-septoria-wash:#fff9f3;

  /* Severity */
  --sev-none:#a8a29e;--sev-mild:#d97706;--sev-moderate:#ea580c;--sev-severe:#dc2626;

  /* Badge (scenario) */
  --badge-bg:#fef9c3;--badge-fg:#854d0e;--badge-border:#eab308;

  /* Interactive */
  --focus-ring:#2563eb;--focus-ring-offset:#ffffff;
  --shadow-sm:0 1px 2px rgba(0,0,0,.05);
  --shadow-md:0 4px 6px -1px rgba(0,0,0,.07),0 2px 4px -2px rgba(0,0,0,.05);
  --shadow-lg:0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.04);
  --shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 8px 10px -6px rgba(0,0,0,.06);

  /* Radius */
  --r-sm:4px;--r-md:8px;--r-lg:12px;--r-xl:16px;

  /* Type scale */
  --fs-xs:.6875rem;--fs-sm:.8125rem;--fs-base:.9375rem;
  --fs-md:1rem;--fs-lg:1.125rem;--fs-xl:1.375rem;--fs-2xl:1.75rem;--fs-hero:2.25rem;

  /* Spacing (4px grid) */
  --sp-1:.25rem;--sp-2:.5rem;--sp-3:.75rem;--sp-4:1rem;
  --sp-5:1.25rem;--sp-6:1.5rem;--sp-8:2rem;--sp-10:2.5rem;--sp-12:3rem;

  /* Gauge */
  --gauge-h:.5rem;--gauge-fill:var(--accent);

  /* Transitions */
  --ease:cubic-bezier(.4,0,.2,1);
  --dur-fast:120ms;--dur-normal:200ms;--dur-slow:350ms;
}

@media(prefers-color-scheme:dark){
  :root{
    --bg:#0c0a09;--bg-alt:#1c1917;
    --fg:#fafaf9;--fg-secondary:#d6d3d1;--fg-muted:#78716c;
    --card-bg:#1c1917;--card-border:#292524;
    --stage-bg:#1a1a0f;--stage-border:#3d3b1e;
    --ring-track:#292524;

    --accent:#4ade80;--accent-soft:#14532d;--accent-focus:#86efac;

    --cat-healthy:#4ade80;--cat-healthy-soft:#14532d;--cat-healthy-text:#bbf7d0;
    --cat-late-blight:#f87171;--cat-late-blight-soft:#7f1d1d;--cat-late-blight-text:#fecaca;
    --cat-early-blight:#fbbf24;--cat-early-blight-soft:#78350f;--cat-early-blight-text:#fef3c7;
    --cat-septoria:#fb923c;--cat-septoria-soft:#7c2d12;--cat-septoria-text:#ffedd5;
    --cat-healthy-wash:#0e1610;--cat-late-blight-wash:#160e0e;
    --cat-early-blight-wash:#16130a;--cat-septoria-wash:#16110a;

    --sev-none:#78716c;--sev-mild:#fbbf24;--sev-moderate:#fb923c;--sev-severe:#f87171;

    --badge-bg:#422006;--badge-fg:#fde68a;--badge-border:#d97706;

    --focus-ring:#60a5fa;--focus-ring-offset:#0c0a09;
    --shadow-sm:0 1px 2px rgba(0,0,0,.2);
    --shadow-md:0 4px 6px -1px rgba(0,0,0,.3),0 2px 4px -2px rgba(0,0,0,.2);
    --shadow-lg:0 10px 15px -3px rgba(0,0,0,.35),0 4px 6px -4px rgba(0,0,0,.2);
    --shadow-xl:0 20px 25px -5px rgba(0,0,0,.4),0 8px 10px -6px rgba(0,0,0,.25);
  }
}

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

body{
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--fg);
  line-height:1.6;font-size:var(--fs-base);
  min-height:100vh;display:flex;flex-direction:column;
}

/* ----------------------------------------------------------------
   Focus ring (global)
   ---------------------------------------------------------------- */
:focus-visible{
  outline:2px solid var(--focus-ring);
  outline-offset:2px;
}
:focus:not(:focus-visible){outline:none}

/* ----------------------------------------------------------------
   Header
   ---------------------------------------------------------------- */
header,main,footer{max-width:1000px;width:100%;margin:0 auto;padding:0 var(--sp-6)}
header,.site-header{text-align:center;padding-top:var(--sp-10);padding-bottom:var(--sp-6)}
header h1,.site-header h1{font-size:var(--fs-hero);font-weight:800;color:var(--accent);letter-spacing:-.02em}
.tagline{color:var(--fg-secondary);font-size:var(--fs-md);margin-top:var(--sp-2);font-weight:400}

/* ----------------------------------------------------------------
   How it works (collapsible)
   ---------------------------------------------------------------- */
#how-it-works{
  background:var(--accent-soft);border:1px solid var(--stage-border);
  border-radius:var(--r-lg);padding:var(--sp-4) var(--sp-5);
  margin-bottom:var(--sp-6);font-size:var(--fs-sm);color:var(--fg);
}
.hiw-summary{
  font-weight:700;cursor:pointer;list-style:none;
  padding:var(--sp-2) 0;font-size:var(--fs-base);
}
.hiw-summary::marker{display:none}
.hiw-summary::-webkit-details-marker{display:none}
.hiw-body{margin-top:var(--sp-3);color:var(--fg-secondary);line-height:1.7}

/* ----------------------------------------------------------------
   Corpus overview — "what is in this dataset", above the gallery.
   Deliberately quiet: it frames the frozen corpus, it does not shout.
   ---------------------------------------------------------------- */
#corpus-overview{
  display:flex;flex-direction:column;gap:var(--sp-2);
  margin-bottom:var(--sp-4);
  font-size:var(--fs-sm);color:var(--fg-secondary);
}
.co-line{
  font-weight:600;color:var(--fg);
  font-variant-numeric:tabular-nums;
}
.co-badges{display:flex;flex-wrap:wrap;gap:var(--sp-2)}
.co-badge{
  display:inline-flex;align-items:center;gap:var(--sp-1);
  font-size:var(--fs-xs);font-weight:700;
  padding:var(--sp-1) var(--sp-2);border-radius:999px;
  line-height:1.3;
}
/* A recorded run is the real thing — accent. */
.co-badge-recorded{
  background:var(--accent-soft);color:var(--accent-focus);
  border:1px solid color-mix(in srgb,var(--accent) 40%,transparent);
}
/* A worked example is not a recorded run — the amber "scenario" note. */
.co-badge-example{
  background:var(--badge-bg);color:var(--badge-fg);
  border:1px solid var(--badge-border);
}
.co-sev-row{
  display:flex;flex-wrap:wrap;gap:var(--sp-2) var(--sp-4);
}
.co-sev-item{
  display:inline-flex;align-items:center;gap:var(--sp-1);
  font-variant-numeric:tabular-nums;color:var(--fg-secondary);
}
.co-sev-dot{
  width:.5rem;height:.5rem;border-radius:50%;
  background:var(--fg-muted);
}
.co-sev-dot[data-sev=none]{background:var(--sev-none)}
.co-sev-dot[data-sev=mild]{background:var(--sev-mild)}
.co-sev-dot[data-sev=moderate]{background:var(--sev-moderate)}
.co-sev-dot[data-sev=severe]{background:var(--sev-severe)}

/* ----------------------------------------------------------------
   Filter bar & chips
   ---------------------------------------------------------------- */
#filter-bar{
  display:flex;flex-wrap:wrap;gap:var(--sp-2);
  margin-bottom:var(--sp-4);
}
.filter-chip{
  display:inline-flex;align-items:center;gap:var(--sp-2);
  padding:var(--sp-2) var(--sp-3);
  border:1.5px solid var(--card-border);border-radius:999px;
  background:var(--card-bg);color:var(--fg-secondary);
  font-size:var(--fs-sm);font-weight:600;cursor:pointer;
  transition:background var(--dur-normal) var(--ease),
             border-color var(--dur-normal) var(--ease),
             color var(--dur-normal) var(--ease),
             box-shadow var(--dur-normal) var(--ease);
  user-select:none;
}
.filter-chip:hover{
  border-color:var(--accent);color:var(--accent);
}
.filter-chip:active{transform:scale(.97)}
.filter-chip.is-active{
  background:var(--accent);color:#fff;border-color:var(--accent);
}
.filter-chip[data-cat=healthy].is-active{background:var(--cat-healthy);border-color:var(--cat-healthy);color:#fff}
.filter-chip[data-cat=late_blight].is-active{background:var(--cat-late-blight);border-color:var(--cat-late-blight);color:#fff}
.filter-chip[data-cat=early_blight].is-active{background:var(--cat-early-blight);border-color:var(--cat-early-blight);color:#fff}
.filter-chip[data-cat=septoria].is-active{background:var(--cat-septoria);border-color:var(--cat-septoria);color:#fff}
.chip-count{
  font-size:var(--fs-xs);opacity:.7;font-weight:400;
}
.chip-name{font-weight:600}

/* ----------------------------------------------------------------
   Gallery (filmstrip)
   ---------------------------------------------------------------- */
#gallery{
  display:flex;flex-direction:column;gap:var(--sp-5);
  padding:var(--sp-2) 0 var(--sp-4);
}

.gallery-item{
  position:relative;
  flex:0 0 140px;scroll-snap-align:start;
  border:2px solid var(--card-border);border-radius:var(--r-md);
  background:var(--card-bg);overflow:hidden;cursor:pointer;
  box-shadow:var(--shadow-sm);
  display:flex;flex-direction:column;align-items:center;
  transition:transform var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),
             box-shadow var(--dur-fast) var(--ease);
}
.gallery-item:hover{
  border-color:var(--accent);
  box-shadow:var(--shadow-md);
  transform:translateY(-2px);
}
.gallery-item.selected,.gallery-item[aria-selected=true]{
  border-color:var(--accent);
  box-shadow:0 0 0 3px var(--accent-soft),0 0 0 5px var(--accent),var(--shadow-lg);
  transform:translateY(-2px);
}
.gallery-item:focus-visible{
  outline:2px solid var(--focus-ring);outline-offset:2px;
}
.gallery-item:focus:not(:focus-visible){outline:none}
.gallery-item img{width:100%;height:100px;object-fit:cover;display:block;transition:transform var(--dur-slow) var(--ease)}
.gallery-item:hover img{transform:scale(1.04)}

/* Verdict reveal on hover/focus — an overlay band, absolute so it never
   reflows the filmstrip. Reads instantly (fast duration). */
.item-verdict{
  position:absolute;inset:auto 0 0 0;z-index:2;
  transform:translateY(100%);
  transition:transform var(--dur-fast) var(--ease);
  pointer-events:none;
  padding:var(--sp-2) var(--sp-2);
  background:var(--card-bg);
  border-top:1px solid var(--card-border);
  font-size:var(--fs-xs);line-height:1.3;
}
.gallery-item:hover .item-verdict,
.gallery-item:focus-within .item-verdict{
  transform:translateY(0);
}
.item-label{
  font-size:var(--fs-xs);padding:var(--sp-2) var(--sp-2);text-align:center;
  width:100%;background:var(--bg-alt);
  text-transform:capitalize;font-weight:600;color:var(--fg-secondary);
}
.item-verdict .iv-label{
  display:block;font-weight:700;color:var(--fg);text-transform:capitalize;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.item-verdict .iv-sev{
  display:inline-block;margin-top:var(--sp-1);
  font-size:.625rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;
  padding:1px var(--sp-2);border-radius:999px;
}
[data-severity=mild] .iv-sev{background:var(--sev-mild);color:#fff}
[data-severity=moderate] .iv-sev{background:var(--sev-moderate);color:#fff}
[data-severity=severe] .iv-sev{background:var(--sev-severe);color:#fff}
[data-severity=none] .iv-sev{background:var(--fg-muted);color:#fff}
.item-cat-dot{
  display:inline-block;width:.5rem;height:.5rem;border-radius:50%;
  margin-right:var(--sp-1);vertical-align:middle;
}
.item-cat-dot[data-cat=healthy]{background:var(--cat-healthy)}
.item-cat-dot[data-cat=late_blight]{background:var(--cat-late-blight)}
.item-cat-dot[data-cat=early_blight]{background:var(--cat-early-blight)}
.item-cat-dot[data-cat=septoria]{background:var(--cat-septoria)}

#gallery-empty{
  font-size:var(--fs-sm);color:var(--fg-muted);font-style:italic;
  padding:var(--sp-6) 0;text-align:center;
}

/* ----------------------------------------------------------------
   Picker toggle (collapse/expand control)
   ---------------------------------------------------------------- */
.picker-toggle{
  display:inline-flex;align-items:center;gap:var(--sp-1);
  padding:var(--sp-2) var(--sp-4);
  border:1.5px solid var(--card-border);border-radius:999px;
  background:transparent;color:var(--fg-muted);
  font-size:var(--fs-sm);font-weight:600;cursor:pointer;
  margin-bottom:var(--sp-3);
  transition:background var(--dur-normal) var(--ease),
             border-color var(--dur-normal) var(--ease),
             color var(--dur-normal) var(--ease),
             box-shadow var(--dur-normal) var(--ease);
}
.picker-toggle:hover{
  border-color:var(--accent);color:var(--accent);
  background:var(--accent-soft);
}
.picker-toggle:active{transform:scale(.97)}
.picker-toggle:focus-visible{
  outline:2px solid var(--focus-ring);outline-offset:2px;
}

/* Collapsed picker — smooth collapse of gallery strips */
#picker .gallery,#picker #gallery-empty{
  transition:max-height var(--dur-slow) var(--ease),
             opacity var(--dur-normal) var(--ease),
             overflow var(--dur-slow) var(--ease);
  max-height:2000px;opacity:1;overflow:visible;
}
#picker.collapsed .gallery,#picker.collapsed #gallery-empty{
  max-height:0;opacity:0;overflow:hidden;
  pointer-events:none;
}

/* ----------------------------------------------------------------
   Category strips (grouped gallery rows)
   ---------------------------------------------------------------- */
.cat-strip{display:flex;flex-direction:column;gap:var(--sp-2)}
.cat-strip-label{
  font-size:var(--fs-xs);font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;
  padding:var(--sp-1) var(--sp-3);
  border-radius:var(--r-sm);
  display:inline-flex;align-items:center;gap:var(--sp-2);
  align-self:flex-start;
}
.cat-strip[data-cat=healthy] .cat-strip-label{background:var(--cat-healthy-soft);color:var(--cat-healthy-text)}
.cat-strip[data-cat=late_blight] .cat-strip-label{background:var(--cat-late-blight-soft);color:var(--cat-late-blight-text)}
.cat-strip[data-cat=early_blight] .cat-strip-label{background:var(--cat-early-blight-soft);color:var(--cat-early-blight-text)}
.cat-strip[data-cat=septoria] .cat-strip-label{background:var(--cat-septoria-soft);color:var(--cat-septoria-text)}

.cat-strip-row{
  display:flex;gap:var(--sp-3);
  overflow-x:auto;scroll-snap-type:x mandatory;
  padding:var(--sp-2) var(--sp-6) var(--sp-2) var(--sp-1);
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  mask-image:linear-gradient(to right,black calc(100% - 2.5rem),transparent 100%);
  -webkit-mask-image:linear-gradient(to right,black calc(100% - 2.5rem),transparent 100%);
}
.cat-strip-row::-webkit-scrollbar{height:5px}
.cat-strip-row::-webkit-scrollbar-track{background:var(--bg-alt);border-radius:3px}
.cat-strip-row::-webkit-scrollbar-thumb{background:var(--card-border);border-radius:3px}

/* ----------------------------------------------------------------
   Results section — two-column layout
   ---------------------------------------------------------------- */
#results-section{
  margin-top:var(--sp-6);
  display:grid;grid-template-columns:1fr;gap:var(--sp-8);
}
@media(min-width:900px){
  #results-section{grid-template-columns:1.1fr .9fr;align-items:start}
  #result-left{position:sticky;top:var(--sp-4);align-self:start}
}

/* Photo and verdict are ONE object: a single fused card. The image is the
   top half, the verdict card is the tinted lower band. No seam between them. */
#result-left{
  background:var(--card-bg);
  border:1.5px solid var(--card-border);
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--shadow-lg);
}

/* ----------------------------------------------------------------
   Sample navigation
   ---------------------------------------------------------------- */
#sample-nav{
  display:flex;align-items:center;justify-content:center;
  gap:var(--sp-3);margin-bottom:var(--sp-3);
}
.nav-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:2.25rem;height:2.25rem;border-radius:50%;
  border:1.5px solid var(--card-border);background:var(--card-bg);
  color:var(--fg);font-size:var(--fs-md);cursor:pointer;
  transition:background var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),
             box-shadow var(--dur-fast) var(--ease);
}
.nav-btn:hover{border-color:var(--accent);color:var(--accent);box-shadow:var(--shadow-sm)}
.nav-btn:active{transform:scale(.93)}
#sample-position{font-size:var(--fs-sm);color:var(--fg-muted);font-variant-numeric:tabular-nums;min-width:3.5rem;text-align:center}

/* ----------------------------------------------------------------
   Result image area — top half of the fused photo+verdict card
   ---------------------------------------------------------------- */
#result-image-area{
  position:relative;width:100%;
  background:var(--bg-alt);
  padding:var(--sp-4);
  display:flex;justify-content:center;
}
#result-image{
  max-width:100%;max-height:400px;border-radius:var(--r-md);
  object-fit:contain;
  box-shadow:var(--shadow-md);
}

/* ----------------------------------------------------------------
   Scenario badge — overlaid on the image's top-left corner
   ---------------------------------------------------------------- */
.badge{
  position:absolute;top:var(--sp-3);left:var(--sp-3);
  display:inline-block;font-size:var(--fs-xs);font-weight:700;
  padding:var(--sp-1) var(--sp-3);border-radius:var(--r-sm);
  letter-spacing:.02em;text-transform:uppercase;
  z-index:1;
  box-shadow:0 1px 3px rgba(0,0,0,.15);
}
.badge-scenario{
  background:var(--badge-bg);color:var(--badge-fg);
  border:1px solid var(--badge-border);
}

/* ----------------------------------------------------------------
   Verdict card (hero) — the tinted lower band of the fused card
   ---------------------------------------------------------------- */
#verdict-card{
  border-radius:0;
  padding:var(--sp-5);
  background:var(--card-bg);
  border-top:1.5px solid var(--card-border);
  transition:background var(--dur-normal) var(--ease),
             border-color var(--dur-normal) var(--ease);
}
#verdict-card[data-cat=healthy]{background:var(--cat-healthy-wash);border-top-color:color-mix(in srgb,var(--cat-healthy) 35%,var(--card-border))}
#verdict-card[data-cat=late_blight]{background:var(--cat-late-blight-wash);border-top-color:color-mix(in srgb,var(--cat-late-blight) 35%,var(--card-border))}
#verdict-card[data-cat=early_blight]{background:var(--cat-early-blight-wash);border-top-color:color-mix(in srgb,var(--cat-early-blight) 35%,var(--card-border))}
#verdict-card[data-cat=septoria]{background:var(--cat-septoria-wash);border-top-color:color-mix(in srgb,var(--cat-septoria) 35%,var(--card-border))}

.verdict-head{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:var(--sp-2);margin-bottom:var(--sp-2);
}
.verdict-label{
  font-size:var(--fs-2xl);font-weight:800;color:var(--fg);
  letter-spacing:-.02em;line-height:1.1;
}
.verdict-cat-chip{
  display:inline-flex;align-items:center;gap:var(--sp-1);
  font-size:var(--fs-xs);font-weight:700;text-transform:uppercase;
  letter-spacing:.04em;
  padding:var(--sp-1) var(--sp-3);border-radius:999px;
}
#verdict-card[data-cat=healthy] .verdict-cat-chip{background:var(--cat-healthy);color:#fff}
#verdict-card[data-cat=late_blight] .verdict-cat-chip{background:var(--cat-late-blight);color:#fff}
#verdict-card[data-cat=early_blight] .verdict-cat-chip{background:var(--cat-early-blight);color:#fff}
#verdict-card[data-cat=septoria] .verdict-cat-chip{background:var(--cat-septoria);color:#fff}

/* ----------------------------------------------------------------
   Confidence ring (SVG)
   ---------------------------------------------------------------- */
.verdict-ring{
  display:flex;flex-direction:column;align-items:center;
  gap:var(--sp-1);margin:var(--sp-2) 0;
}
.verdict-ring svg{
  width:108px;height:108px;
  transform:rotate(-90deg);/* start from top */
}
.verdict-ring .ring-track{
  fill:none;stroke:var(--ring-track);stroke-width:8;
}
.verdict-ring .ring-fill{
  fill:none;stroke-width:8;stroke-linecap:round;
}
#verdict-card[data-cat=healthy] .ring-fill{stroke:var(--cat-healthy)}
#verdict-card[data-cat=late_blight] .ring-fill{stroke:var(--cat-late-blight)}
#verdict-card[data-cat=early_blight] .ring-fill{stroke:var(--cat-early-blight)}
#verdict-card[data-cat=septoria] .ring-fill{stroke:var(--cat-septoria)}

.ring-value{
  font-size:var(--fs-xl);font-weight:800;color:var(--fg);
  font-variant-numeric:tabular-nums;
}
.ring-caption{
  font-size:var(--fs-xs);color:var(--fg-muted);text-transform:uppercase;
  letter-spacing:.04em;font-weight:600;
}

/* ----------------------------------------------------------------
   Severity pips & label
   ---------------------------------------------------------------- */
.verdict-sev{
  display:flex;align-items:center;gap:var(--sp-3);
  margin-top:var(--sp-2);
}
.severity-level{display:inline-flex;align-items:center;gap:var(--sp-3)}
.sev-pips{display:inline-flex;gap:var(--sp-1)}
.sev-pip{
  width:.65rem;height:.65rem;border-radius:50%;
  background:var(--card-border);
  transition:background var(--dur-normal) var(--ease);
}
/* Severity colours — driven by [data-severity] on any ancestor so both the
   verdict card and inline Stage 2 rows agree. */
[data-severity=mild] .sev-pip.lit{background:var(--sev-mild)}
[data-severity=moderate] .sev-pip.lit{background:var(--sev-moderate)}
[data-severity=severe] .sev-pip.lit{background:var(--sev-severe)}
[data-severity=none] .sev-pip.lit{background:var(--sev-none)}
.sev-level-label{font-size:var(--fs-sm);font-weight:700;color:var(--fg);margin-left:var(--sp-2)}

/* ----------------------------------------------------------------
   Replay rail
   ---------------------------------------------------------------- */
#replay-rail{
  display:flex;flex-direction:column;gap:var(--sp-3);
  padding:var(--sp-4);border:1px solid var(--stage-border);
  background:var(--stage-bg);border-radius:var(--r-lg);
}
.replay-label{
  font-size:var(--fs-xs);font-weight:700;letter-spacing:.08em;
  text-transform:uppercase;color:var(--fg-muted);
}
#rail{
  list-style:none;display:flex;align-items:center;gap:var(--sp-2);
  margin:0;padding:0;
}
.rail-step{
  display:flex;align-items:center;gap:var(--sp-2);flex:1;
  padding:var(--sp-2) var(--sp-3);border-radius:var(--r-md);
  color:var(--fg-muted);font-size:var(--fs-xs);font-weight:600;
  cursor:pointer;
  transition:background var(--dur-normal) var(--ease),color var(--dur-normal) var(--ease);
}
.rail-step:hover{color:var(--fg);background:var(--bg-alt)}
.rail-dot{
  width:.65rem;height:.65rem;border-radius:50%;flex:0 0 auto;
  background:var(--card-border);
  transition:background var(--dur-normal) var(--ease),box-shadow var(--dur-normal) var(--ease);
}
.rail-name{white-space:nowrap;flex:0 0 auto}
.rail-step.active{background:var(--accent-soft);color:var(--accent)}
.rail-step.active .rail-dot{
  background:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);
}
.rail-step.done .rail-dot{background:var(--accent)}
.rail-step.done::after{
  content:"\2713";color:var(--accent);font-size:var(--fs-xs);font-weight:700;margin-left:auto;
}
#rail-status{font-size:var(--fs-xs);color:var(--fg-muted);margin-top:var(--sp-1)}

/* ----------------------------------------------------------------
   Replay controls
   ---------------------------------------------------------------- */
#replay-controls{
  display:flex;align-items:center;gap:var(--sp-2);
  flex-wrap:wrap;margin-top:var(--sp-2);
}
.ctl-btn{
  display:inline-flex;align-items:center;justify-content:center;
  width:2.25rem;height:2.25rem;border-radius:50%;
  border:1.5px solid var(--card-border);background:var(--card-bg);
  color:var(--fg);font-size:var(--fs-md);cursor:pointer;
  transition:background var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease),
             box-shadow var(--dur-fast) var(--ease),
             transform var(--dur-fast) var(--ease);
}
.ctl-btn:hover{border-color:var(--accent);color:var(--accent);box-shadow:var(--shadow-sm)}
.ctl-btn:active{transform:scale(.9)}
.ctl-btn[data-state=playing]{background:var(--accent);color:#fff;border-color:var(--accent)}
.ctl-btn[data-state=playing]:hover{filter:brightness(1.1)}

#ctl-hint{
  font-size:var(--fs-xs);color:var(--fg-muted);margin-left:var(--sp-2);
}

/* ----------------------------------------------------------------
   Pipeline output — one story, three weighted acts.
   Stage 1 is confirmation (slim), Stage 2 is the verdict (dominant),
   Stage 3 is the conclusion.
   ---------------------------------------------------------------- */
#pipeline-output{
  display:flex;flex-direction:column;gap:var(--sp-5);
  margin-top:var(--sp-4);
}

/* Stage 1 — a quiet confirmation strip, clearly not the point. Alive, but
   slim: a compact footer to the photo rather than a second headline. */
#stage-1,.stage-confirm{
  background:var(--stage-bg);border:1px solid var(--stage-border);
  border-radius:var(--r-lg);padding:var(--sp-3) var(--sp-4);
}
#stage-1 .stage-title,.stage-confirm .stage-title{
  font-size:var(--fs-xs);font-weight:700;text-transform:uppercase;
  letter-spacing:.07em;color:var(--fg-muted);margin-bottom:var(--sp-2);
}
#stage-1 .metric-list,.stage-confirm .metric-list{
  display:flex;flex-wrap:wrap;gap:var(--sp-2) var(--sp-6);
  flex-direction:row;
}
#stage-1 .metric,.stage-confirm .metric{display:flex;align-items:baseline;gap:var(--sp-2)}
#stage-1 .metric-hint,.stage-confirm .metric-hint{display:none}
#stage-1 .metric-key,.stage-confirm .metric-key{white-space:nowrap}
#stage-1 .gauge,.stage-confirm .gauge{min-width:8rem}

/* A stage's header block: the small kicker label, with any glyph to the right. */
.stage-head{
  display:flex;align-items:center;justify-content:space-between;
  gap:var(--sp-2);margin-bottom:var(--sp-1);
}
/* The small label above a stage's title ("Verdict", "What to do"). */
.stage-kicker{
  font-size:var(--fs-xs);font-weight:700;text-transform:uppercase;
  letter-spacing:.08em;color:var(--fg-muted);
}

/* The confirmation glyph — a quiet, filled check on the stage-1 strip. */
#confirm-mark,.confirm-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:1.35rem;height:1.35rem;border-radius:50%;
  background:var(--accent-soft);color:var(--accent-focus);
  font-size:var(--fs-sm);font-weight:800;line-height:1;
}

/* Stage 2 — the verdict. It dominates the page: the biggest card, the
   deepest shadow, and a paragraph-sized title. */
#stage-2,.stage-verdict{
  background:var(--card-bg);border:1.5px solid var(--card-border);
  border-radius:var(--r-xl);padding:var(--sp-6);
  box-shadow:var(--shadow-lg);
}
#stage-2 .stage-title,.stage-verdict .stage-title{
  font-size:var(--fs-lg);font-weight:800;color:var(--fg);
  letter-spacing:-.01em;margin-bottom:var(--sp-1);
}
#stage-2 .stage-kicker,.stage-verdict .stage-kicker{color:var(--accent-focus)}
#stage-2 .metric,.stage-verdict .metric{
  grid-template-columns:auto 1fr;
  border-bottom:1px solid var(--card-border);
  padding:var(--sp-3) 0;
}
#stage-2 .metric:last-child,.stage-verdict .metric:last-child{border-bottom:none}

/* Stage 2 verdict internals — the repeated disease readout, styled as the
   *detail* to the hero card's headline (see "not a duplicate" note). The
   disease name leads full-width; confidence and severity settle side-by-side
   beneath it as compact summary metrics. */
.verdict-headline{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(10rem,1fr));
  column-gap:var(--sp-5);row-gap:var(--sp-3);
  align-items:center;
  padding:var(--sp-4) 0;
  border-bottom:1px solid var(--card-border);
  margin-bottom:var(--sp-2);
}
.verdict-disease-name{
  grid-column:1/-1;
  font-size:var(--fs-lg);font-weight:600;color:var(--fg);
  letter-spacing:-.01em;line-height:1.2;
}
.verdict-confidence{
  display:inline-flex;flex-direction:column;gap:var(--sp-1);
  font-size:var(--fs-xs);color:var(--fg-muted);font-weight:600;
  text-transform:uppercase;letter-spacing:.04em;
}
.verdict-confidence .gauge{min-width:0;width:100%;max-width:13rem}
.verdict-confidence .gauge-value{min-width:3rem;font-size:var(--fs-sm);text-transform:none}
.verdict-sev-metric{
  display:inline-flex;flex-direction:column;gap:var(--sp-1);
  font-size:var(--fs-xs);color:var(--fg-muted);font-weight:600;
  text-transform:uppercase;letter-spacing:.04em;
}
.verdict-sev-metric .sev-level-label{font-size:var(--fs-sm);font-weight:700;text-transform:none}

/* Stage 3 — the conclusion: treatment actions. */
#stage-3,.stage-conclusion{
  background:var(--stage-bg);border:1px solid var(--stage-border);
  border-radius:var(--r-lg);padding:var(--sp-5);
}
#stage-3 .stage-title,.stage-conclusion .stage-title{
  font-size:var(--fs-sm);font-weight:800;text-transform:uppercase;
  letter-spacing:.06em;color:var(--accent);margin-bottom:var(--sp-3);
}

/* ----------------------------------------------------------------
   Metric rows
   ---------------------------------------------------------------- */
.metric-list{
  display:flex;flex-direction:column;gap:var(--sp-3);
}
.metric{
  display:grid;grid-template-columns:auto 1fr;gap:var(--sp-1) var(--sp-4);
  align-items:baseline;
}
.metric-key{
  font-size:var(--fs-sm);font-weight:600;color:var(--fg-muted);
  white-space:nowrap;
}
.metric-val{
  font-size:var(--fs-sm);font-weight:500;color:var(--fg);
}
.metric-hint{
  grid-column:1/-1;font-size:var(--fs-xs);color:var(--fg-muted);margin-top:calc(var(--sp-1) * -1);
}

/* Boolean badges */
.bool{font-weight:700}
.bool[data-yes=true]{color:var(--cat-healthy)}
.bool[data-yes=false]{color:var(--fg-muted)}

/* ----------------------------------------------------------------
   Motion with intent — entrances that stagger and settle.
   Driven by an .arriving class that worker 1 toggles; each metric rises
   and settles in sequence. Everything is gated off under reduced-motion.
   ---------------------------------------------------------------- */
@keyframes rise-settle{
  0%{opacity:0;transform:translateY(6px)}
  60%{opacity:1;transform:translateY(-1px)}
  100%{opacity:1;transform:translateY(0)}
}
.stage.arriving .metric{
  animation:rise-settle var(--dur-slow) var(--ease) both;
}
.stage.arriving .metric:nth-child(1){animation-delay:0ms}
.stage.arriving .metric:nth-child(2){animation-delay:60ms}
.stage.arriving .metric:nth-child(3){animation-delay:120ms}
.stage.arriving .metric:nth-child(4){animation-delay:180ms}
.stage.arriving .metric:nth-child(5){animation-delay:240ms}
#stage-3.arriving .treatment-card{
  animation:rise-settle var(--dur-slow) var(--ease) both;
}
#stage-3.arriving .treatment-card:nth-child(1){animation-delay:0ms}
#stage-3.arriving .treatment-card:nth-child(2){animation-delay:80ms}
#stage-3.arriving .treatment-card:nth-child(3){animation-delay:160ms}
#stage-3.arriving .treatment-card:nth-child(4){animation-delay:240ms}

/* The verdict arrives rather than appears — a distinct, more dramatic settle
   on the fused card's verdict band, tied to the .revealed state. */
@keyframes verdict-in{
  0%{opacity:0;transform:translateY(10px)}
  100%{opacity:1;transform:translateY(0)}
}
#verdict-card.revealed{
  animation:verdict-in var(--dur-slow) var(--ease) both;
}

/* ----------------------------------------------------------------
   Try-another (shuffle) control + same-disease nudge.
   ---------------------------------------------------------------- */
/* Shuffle — "Try another sample". The main invitation to keep exploring, so it
   reads as a real call-to-action next to the round utility buttons: a filled
   accent pill with a visible text label, not another small icon button. */
#ctl-shuffle,.ctl-shuffle{
  width:auto;height:auto;border-radius:999px;
  padding:var(--sp-2) var(--sp-4);
  background:var(--accent);color:#fff;border-color:var(--accent);
  font-size:var(--fs-sm);font-weight:700;
  box-shadow:var(--shadow-md);
  gap:var(--sp-2);
  transition:background var(--dur-fast) var(--ease),
             box-shadow var(--dur-fast) var(--ease),
             transform var(--dur-fast) var(--ease);
}
#ctl-shuffle::before,.ctl-shuffle::before{
  content:attr(aria-label);
}
#ctl-shuffle:hover,.ctl-shuffle:hover{
  background:var(--accent-focus);box-shadow:var(--shadow-lg);
}
#ctl-shuffle:active,.ctl-shuffle:active{transform:scale(.97)}
.pick-another{
  display:inline-flex;align-items:center;gap:var(--sp-2);
  margin-top:var(--sp-4);padding:var(--sp-2) var(--sp-4);
  border:1.5px solid var(--card-border);border-radius:999px;
  background:var(--accent-soft);color:var(--accent);
  font-size:var(--fs-sm);font-weight:600;cursor:pointer;text-decoration:none;
  transition:background var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease);
}
.pick-another:hover{border-color:var(--accent);color:var(--fg)}
.same-disease-nudge{
  /* It is a <button>, so the UA border/background must be reset or the
     default button chrome draws a grey box around the link-styled text. */
  border:0;background:none;padding:0;font:inherit;
  display:block;margin-top:var(--sp-4);
  font-size:var(--fs-sm);color:var(--accent);font-weight:600;
  text-decoration:none;cursor:pointer;
  transition:opacity var(--dur-fast) var(--ease);
}
.same-disease-nudge:hover{opacity:.75}
.nudge-cat{font-weight:800;text-transform:capitalize}
.same-disease-nudge:focus-visible,.pick-another:focus-visible{
  outline:2px solid var(--focus-ring);outline-offset:2px;border-radius:var(--r-sm);
}

/* ----------------------------------------------------------------
   Confidence gauge (inline bar)
   ---------------------------------------------------------------- */
.gauge{
  display:inline-flex;align-items:center;gap:var(--sp-3);
  min-width:10rem;width:100%;
}
.gauge-track{
  position:relative;flex:1;height:var(--gauge-h);border-radius:var(--gauge-h);
  background:var(--card-border);overflow:hidden;
}
.gauge-fill{
  position:absolute;inset:0 auto 0 0;width:0%;border-radius:var(--gauge-h);
  background:var(--gauge-fill);
  transition:width var(--dur-slow) var(--ease);
}
.gauge-value{
  font-variant-numeric:tabular-nums;font-weight:700;font-size:var(--fs-sm);
  min-width:4rem;text-align:right;color:var(--fg);
}

/* Null confidence — hatched track, no fill, muted italic label.
   Must NEVER look like a real zero. */
.gauge.gauge-empty .gauge-track{
  background:
    repeating-linear-gradient(45deg,var(--card-border) 0 4px,transparent 4px 8px);
}
.gauge.gauge-empty .gauge-fill{width:0%!important;background:transparent}
.gauge.gauge-empty .gauge-value{color:var(--fg-muted);font-style:italic;font-weight:400}

/* ----------------------------------------------------------------
   Treatment cards
   ---------------------------------------------------------------- */
#treatment-cards{display:flex;flex-direction:column;gap:var(--sp-3)}
.treatment-card{
  background:var(--card-bg);border:1px solid var(--card-border);
  border-left:4px solid var(--card-border);
  border-radius:var(--r-md);padding:var(--sp-4);
  box-shadow:var(--shadow-sm);
  transition:border-color var(--dur-normal) var(--ease),
             box-shadow var(--dur-normal) var(--ease);
}
.treatment-card:hover{box-shadow:var(--shadow-md)}
.treatment-card.priority-high{border-left-color:var(--sev-severe)}
.treatment-card.priority-moderate{border-left-color:var(--sev-moderate)}
.treatment-card.priority-low{border-left-color:var(--fg-muted)}

.tc-header{
  display:flex;align-items:center;gap:var(--sp-2);
  width:100%;border:none;background:none;padding:0;
  cursor:pointer;text-align:left;
  color:var(--fg);
}
.tc-header:focus-visible{
  outline:2px solid var(--focus-ring);outline-offset:2px;
  border-radius:var(--r-sm);
}
.tc-rank{
  display:inline-flex;align-items:center;justify-content:center;
  width:1.6rem;height:1.6rem;border-radius:50%;
  background:var(--accent-soft);color:var(--accent);
  font-size:var(--fs-xs);font-weight:800;flex-shrink:0;
}
.treatment-card.priority-high .tc-rank{background:var(--cat-late-blight-soft);color:var(--cat-late-blight)}
.treatment-card.priority-moderate .tc-rank{background:var(--cat-early-blight-soft);color:var(--cat-early-blight)}
.treatment-card.priority-low .tc-rank{background:var(--bg-alt);color:var(--fg-muted)}

.tc-title{font-weight:700;font-size:var(--fs-sm);flex:1}
.tc-priority{
  font-size:var(--fs-xs);padding:var(--sp-1) var(--sp-2);border-radius:var(--r-sm);
  background:var(--accent-soft);color:var(--accent);font-weight:700;
  text-transform:uppercase;letter-spacing:.03em;flex-shrink:0;
}
.treatment-card.priority-high .tc-priority{background:var(--cat-late-blight-soft);color:var(--cat-late-blight)}
.treatment-card.priority-moderate .tc-priority{background:var(--cat-early-blight-soft);color:var(--cat-early-blight)}
.treatment-card.priority-low .tc-priority{background:var(--bg-alt);color:var(--fg-muted)}

.tc-chevron{
  font-size:var(--fs-sm);color:var(--fg-muted);
  transition:transform var(--dur-normal) var(--ease);flex-shrink:0;
}
[data-open=true] .tc-chevron{transform:rotate(180deg)}

.tc-body{
  font-size:var(--fs-sm);color:var(--fg-secondary);line-height:1.65;
  margin-top:var(--sp-3);
}

.treatment-empty{
  font-size:var(--fs-sm);color:var(--fg-muted);font-style:italic;
  padding:var(--sp-2) 0;margin:0;
}

/* ----------------------------------------------------------------
   Provenance bar
   ---------------------------------------------------------------- */
#provenance-bar{
  margin-top:var(--sp-8);text-align:center;padding:var(--sp-4);
  color:var(--fg-muted);font-size:var(--fs-xs);
  border-top:1px solid var(--card-border);
}

/* ----------------------------------------------------------------
   Footer
   ---------------------------------------------------------------- */
footer{
  margin-top:auto;text-align:center;padding:var(--sp-8) var(--sp-6);
  color:var(--fg-muted);font-size:var(--fs-xs);
  border-top:1px solid var(--card-border);
}

/* ----------------------------------------------------------------
   Mobile (<= 600px)
   ---------------------------------------------------------------- */
@media(max-width:600px){
  header{padding-top:var(--sp-6)}
  header h1{font-size:var(--fs-2xl)}
  .tagline{font-size:var(--fs-sm)}

  #filter-bar{gap:var(--sp-1)}
  .filter-chip{padding:var(--sp-1) var(--sp-2);font-size:var(--fs-xs)}

  .picker-toggle{font-size:var(--fs-xs);padding:var(--sp-1) var(--sp-3)}

  #gallery{gap:var(--sp-2)}
  .gallery-item{flex:0 0 110px}
  .gallery-item img{height:80px}
  .item-label{font-size:.625rem;padding:var(--sp-1)}

  #replay-controls{gap:var(--sp-1)}
  .ctl-btn{width:2rem;height:2rem;font-size:var(--fs-sm)}
  #ctl-shuffle,.ctl-shuffle{width:auto;height:auto;padding:var(--sp-1) var(--sp-3);font-size:.625rem}
  #ctl-hint{display:none}

  #rail{flex-wrap:wrap}
  .rail-step{flex:0 0 calc(50% - var(--sp-1));font-size:.625rem}

  #corpus-overview{gap:var(--sp-2)}
  .co-sev-row{gap:var(--sp-1) var(--sp-3)}

  #stage-1,.stage-confirm{padding:var(--sp-3)}
  #stage-1 .metric-list,.stage-confirm .metric-list{flex-direction:column;gap:var(--sp-2)}
  #stage-1 .metric,.stage-confirm .metric{flex-wrap:wrap}
  #stage-2,.stage-verdict{padding:var(--sp-4)}
  #stage-3,.stage-conclusion{padding:var(--sp-4)}

  .verdict-disease-name{font-size:var(--fs-md)}
  .verdict-confidence .gauge{max-width:100%}

  #result-image-area{padding:var(--sp-2)}
  #result-image{max-height:240px}
  #verdict-card{padding:var(--sp-4)}

  .verdict-label{font-size:var(--fs-xl)}
  .verdict-ring svg{width:96px;height:96px}
}

/* ----------------------------------------------------------------
   Reduced motion — everything appears instantly, nothing missing
   ---------------------------------------------------------------- */
@media(prefers-reduced-motion:reduce){
  *{transition-duration:0s!important;animation-duration:0s!important;animation:none!important}
  .gallery-item{will-change:auto}
  .gallery-item:hover{transform:none}
  .gallery-item.selected,.gallery-item[aria-selected=true]{transform:none}
  .gallery-item:hover img{transform:none}
  /* verdict reveal still appears on hover/focus, just instantly (no slide) */
  .gallery-item .item-verdict{transition:none}
  .nav-btn:active,.ctl-btn:active,.ctl-shuffle:active,.filter-chip:active,.pick-another:active{transform:none}
  .picker-toggle:active{transform:none}
  .gauge-fill{transition:none}
  .tc-chevron{transition:none}
  .cat-strip-row{scroll-snap-type:none}
  #picker .gallery,#picker #gallery-empty{transition:none}
}

/* The page is served at plantphrase.com/demo, so the wordmark and the footer
   link back to the marketing site. Neither should read as a default UA link. */
header h1 a,
.site-footer a{
  color:inherit;text-decoration:none;
  border-bottom:1px solid currentColor;
}
header h1 a{border-bottom:none}
header h1 a:hover,
.site-footer a:hover{opacity:.75}
header h1 a:focus-visible,
.site-footer a:focus-visible{
  outline:2px solid var(--focus-ring);outline-offset:3px;border-radius:2px;
}