/* find-duplicate-photos.css — tool-only styles. Tokens/chrome come from
   /shared/shell.css. Colorblind-safe: keep/duplicate state rides border
   weight + glyph + label ("✓ Keep" / "✕ Duplicate"), match type rides a
   glyph + words ("= Identical files" / "≈ Visually similar") — state never
   rides hue alone. */
#tool { max-width: 860px; margin: 0 auto; padding: var(--space-2xl) var(--space-xl) var(--space-4xl); }
#tool h1 { margin: 0 0 var(--space-sm); font-size: var(--t-2xl); font-weight: 600; }
.tool-tagline { margin: 0 0 var(--space-xl); color: var(--text-secondary); font-size: var(--t-lg); max-width: 70ch; }

/* The playbook guard: [hidden] must beat any author display: rule below
   (.actions is flex, .photo is flex, etc.). */
#tool [hidden] { display: none !important; }

/* --- Dropzone ------------------------------------------------------------ */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-card);
  padding: var(--space-2xl);
  text-align: center;
  background: var(--surface);
}
.dropzone.is-drag { border-color: var(--accent); background: var(--surface-2); }
.dropzone p { margin: 0 0 var(--space-sm); }
.dz-or { color: var(--text-muted); font-size: var(--t-sm); }
.dz-buttons { display: flex; gap: var(--space-sm); justify-content: center; flex-wrap: wrap; }
.dz-note { color: var(--text-muted); font-size: var(--t-sm); margin: var(--space-sm) 0 0; }

.file-label {
  position: relative;
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-control);
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 500;
  cursor: pointer;
}
/* Visually hidden, NOT display:none — the input stays focusable and in the
   a11y tree so keyboard users can Tab to it and press Enter/Space.
   Same clip pattern as shell.css's .visually-hidden utility. */
.file-label input {
  position: absolute !important;
  width: 1px !important; height: 1px !important;
  margin: -1px !important; padding: 0 !important;
  border: 0 !important; clip: rect(0 0 0 0) !important;
  clip-path: inset(50%) !important; overflow: hidden !important;
  white-space: nowrap !important;
}
.file-label:focus-within { outline: 2px solid var(--focus-ring); outline-offset: 2px; }

.scan-status { margin: var(--space-lg) 0 0; font-weight: 500; }

/* --- Results ------------------------------------------------------------- */
#results { margin-top: var(--space-xl); }
.summary { margin: 0 0 var(--space-lg); font-size: var(--t-lg); font-weight: 600; }

.sensitivity {
  display: flex; align-items: center; gap: var(--space-lg); flex-wrap: wrap;
  margin: 0 0 var(--space-lg); padding: var(--space-sm) var(--space-lg) var(--space-md);
  border: 1px solid var(--border); border-radius: var(--radius-card);
}
.sensitivity legend { padding: 0 var(--space-xs); font-size: var(--t-sm); font-weight: 600; }
.sensitivity label { display: inline-flex; align-items: center; gap: var(--space-xs); }
#sensitivity-hint { margin: 0; }

.actions { display: flex; gap: var(--space-sm); flex-wrap: wrap; margin-bottom: var(--space-lg); }
.actions button {
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: inherit;
  font: inherit;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-control);
  cursor: pointer;
}
.actions button:disabled { opacity: 0.55; cursor: default; }
#download-zip { background: var(--accent); color: var(--accent-contrast); border-color: var(--accent); font-weight: 500; }
.btn-quiet { color: var(--text-secondary); }

.zip-warning { margin: 0 0 var(--space-lg); font-size: var(--t-sm); font-weight: 500; }
.zip-warning::before { content: "⚠ "; }
.action-error { margin: 0 0 var(--space-lg); font-size: var(--t-sm); font-weight: 500; color: var(--danger); }
.action-error::before { content: "⚠ "; }

/* --- Group cards ----------------------------------------------------------- */
.group-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  background: var(--surface);
  padding: var(--space-lg);
  margin-block: var(--space-md);
}
.group-head {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: var(--space-md); flex-wrap: wrap; margin-bottom: var(--space-md);
}
.group-match { font-weight: 600; font-size: var(--t-sm); }
.group-bytes { color: var(--text-muted); font-size: var(--t-sm); }
.group-photos { display: flex; flex-wrap: wrap; gap: var(--space-md); }

/* One photo = one real <button> so click/Enter/Space all toggle it and
   aria-pressed carries the state. Visuals key off aria-pressed so the DOM
   state and the visual state cannot drift. */
.photo {
  display: flex; flex-direction: column; gap: var(--space-xs);
  width: 112px; padding: var(--space-xs);
  border: 1px solid var(--border); border-radius: var(--radius-card);
  background: var(--surface); color: inherit;
  font: inherit; text-align: left; cursor: pointer;
}
/* Keeper: heavier border (weight, not hue, is the signal) + "✓ Keep" caption. */
.photo[aria-pressed="true"] {
  border: 2px solid var(--accent);
  padding: calc(var(--space-xs) - 1px);
}
.photo-thumb {
  position: relative; display: block;
  width: 104px; height: 104px;
  border-radius: 2px; overflow: hidden;
  background: var(--surface-2);
}
.photo-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-noimg {
  display: flex; align-items: center; justify-content: center;
  width: 100%; height: 100%;
  padding: var(--space-xs); box-sizing: border-box;
  color: var(--text-muted); font-size: var(--t-xs); text-align: center;
}
/* Duplicate: dark overlay + ✕ glyph on the thumb, plus the text caption below. */
.photo[aria-pressed="false"] .photo-thumb::after {
  content: "✕";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  background: rgba(0, 0, 0, 0.55);
  color: #fff; font-size: var(--t-xl);
}
.photo-state { font-weight: 600; font-size: var(--t-xs); }
.photo[aria-pressed="false"] .photo-state { color: var(--text-secondary); }
.photo-name { font-size: var(--t-xs); color: var(--text-secondary); overflow-wrap: anywhere; }
.photo-meta { font-size: var(--t-xs); color: var(--text-muted); }

/* --- Issues + deep page ------------------------------------------------------ */
#issues { margin-top: var(--space-lg); font-size: var(--t-sm); color: var(--text-secondary); }
#issues summary { cursor: pointer; font-weight: 500; color: var(--text); }
#issues-list { margin: var(--space-sm) 0 0; padding-left: var(--space-xl); }
#issues-list li { margin-bottom: var(--space-xs); overflow-wrap: anywhere; }

.tool-copy { margin-top: var(--space-3xl); max-width: 70ch; }
.tool-copy h2 { font-size: var(--t-lg); font-weight: 600; margin: var(--space-2xl) 0 var(--space-sm); }
.tool-copy p { color: var(--text-secondary); line-height: 1.55; }
.faq details { border-top: 1px solid var(--border); padding: var(--space-md) 0; }
.faq details:last-child { border-bottom: 1px solid var(--border); }
.faq summary { font-weight: 600; cursor: pointer; }
.faq details p { margin: var(--space-sm) 0 0; }

/* --- Mobile ------------------------------------------------------------------ */
@media (max-width: 480px) {
  #tool { padding-inline: var(--space-lg); }
  .dz-buttons { flex-direction: column; align-items: center; }
  .actions { flex-direction: column; align-items: stretch; }
  .sensitivity { gap: var(--space-md); }
}