/*
 * image-filters.css — per-tool styles: dropzone, preset thumbnails, live
 * preview canvas and range controls. Tokens only; no inline styles (CSP).
 */

/* Drop zone — a label wrapping the (visually hidden) native file input. */
.if-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  border: 2px dashed var(--border);
  border-radius: var(--radius-lg);
  background: var(--neutral-50);
  cursor: pointer;
  transition: border-color .15s ease, background-color .15s ease;
}
.if-dropzone:hover { border-color: var(--blue-600); background: var(--blue-50); }
.if-dropzone.is-dragover { border-color: var(--blue-600); background: var(--blue-100); }
.if-dropzone:focus-within { outline: 2px solid var(--blue-600); outline-offset: 2px; }
.if-dropzone-icon { color: var(--text-muted); }
.if-dropzone-title { font: 600 15px/1.4 var(--font-sans); color: var(--text-primary); }
.if-dropzone-hint { font: 400 13px/1.4 var(--font-sans); color: var(--text-secondary); }

.if-file-input {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* Preset strip — clickable thumbnail buttons. */
.if-presets {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
  gap: var(--space-3);
}
.if-preset {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface, var(--neutral-50));
  cursor: pointer;
  transition: border-color .15s ease, box-shadow .15s ease, background-color .15s ease;
}
.if-preset:hover { border-color: var(--blue-600); }
.if-preset:focus-visible { outline: 2px solid var(--blue-600); outline-offset: 2px; }
.if-preset.is-active {
  border-color: var(--blue-600);
  box-shadow: 0 0 0 1px var(--blue-600) inset;
  background: var(--blue-50);
}
.if-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--radius-sm);
  background: var(--neutral-100);
}
.if-thumb-canvas { max-width: 100%; max-height: 100%; display: block; }
.if-preset-name {
  font: 600 12px/1.3 var(--font-sans);
  color: var(--text-secondary);
  text-align: center;
}
.if-preset.is-active .if-preset-name { color: var(--blue-700, var(--blue-600)); }

/* Live preview — checkered so transparent images read clearly. */
.if-preview {
  margin: var(--space-4) 0 var(--space-2);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background-color: var(--neutral-50);
  background-image:
    linear-gradient(45deg, var(--neutral-100) 25%, transparent 25%),
    linear-gradient(-45deg, var(--neutral-100) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, var(--neutral-100) 75%),
    linear-gradient(-45deg, transparent 75%, var(--neutral-100) 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0;
}
.if-canvas {
  display: block;
  max-width: 100%;
  max-height: 460px;
  height: auto;
  border-radius: var(--radius-sm);
}
.if-meta { text-align: center; }

/* Range controls. */
.if-range-row { display: flex; align-items: center; gap: var(--space-3); }
.if-range { flex: 1 1 auto; accent-color: var(--blue-600); }
.if-range-out {
  flex: 0 0 auto;
  min-width: 3.5em;
  text-align: right;
  font: 600 13px/1 var(--font-sans);
  color: var(--text-secondary);
}

/* Export row. */
.if-export {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: flex-end;
  margin-top: var(--space-4);
}
.if-export-field { flex: 1 1 200px; margin: 0; }