/* ── Signature Generator — tool-specific styles ───────────────────────────────
   Global styles are inherited from /css/style.css.
   Colours reference CSS custom properties only — no hardcoded values, except
   the fixed white preview backdrops below (needed so dark ink and a dark-mode
   page never blend into each other — the export's own transparency is a
   separate, independent choice made via the background toggle).
   ─────────────────────────────────────────────────────────────────────────── */

.sg-page { display: flex; flex-direction: column; gap: 0; }

/* ── Mode switch ──────────────────────────────────────────────────────────── */

.sg-mode-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: var(--space-5); }
.sg-mode-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-2);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: border-color var(--transition), background var(--transition);
}
.sg-mode-pill:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.sg-mode-pill input { accent-color: var(--accent); }
.sg-mode-pill input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Mode panels ──────────────────────────────────────────────────────────── */

.sg-panel { display: flex; flex-direction: column; gap: 1rem; }
.sg-panel[hidden] { display: none; }

.sg-field { display: flex; flex-direction: column; gap: 0.35rem; min-width: 0; flex: 1; }
.sg-label { font-size: 0.875rem; font-weight: 500; color: var(--text-2); }
.sg-help { margin: 0; font-size: 0.8rem; color: var(--text-2); opacity: 0.75; }

.sg-field-row { display: flex; align-items: flex-end; gap: 0.75rem; flex-wrap: wrap; }
.sg-field-row .sg-field { min-width: 140px; }
@media (max-width: 520px) { .sg-field-row { flex-direction: column; align-items: stretch; } }

.sg-color-input {
  width: 100%;
  height: 40px;
  padding: 2px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: none;
}
.sg-slider { width: 100%; accent-color: var(--accent); cursor: pointer; }

/* ── Draw pad ─────────────────────────────────────────────────────────────── */

.sg-canvas-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
  overflow: hidden;
  background-image:
    linear-gradient(45deg, #eee 25%, transparent 25%),
    linear-gradient(-45deg, #eee 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #eee 75%),
    linear-gradient(-45deg, transparent 75%, #eee 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}
#sg-draw-canvas { display: block; width: 100%; height: auto; touch-action: none; cursor: crosshair; }

.sg-canvas-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; }

/* ── Type preview ─────────────────────────────────────────────────────────── */

.sg-preview-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem;
  background-image:
    linear-gradient(45deg, #eee 25%, transparent 25%),
    linear-gradient(-45deg, #eee 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #eee 75%),
    linear-gradient(-45deg, transparent 75%, #eee 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}
#sg-type-canvas { max-width: 100%; display: block; }
.sg-empty-hint {
  position: absolute;
  margin: 0;
  font-size: 0.85rem;
  color: #6b6b6b;
  pointer-events: none;
}
.sg-empty-hint[hidden] { display: none; }

.sg-style-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.sg-style-btn {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-size: 0.85rem;
  transition: border-color var(--transition), background var(--transition);
}
.sg-style-btn.is-active { border-color: var(--accent); background: var(--accent-soft); }
.sg-style-elegant { font-family: "Instrument Serif", Georgia, serif; font-style: italic; font-size: 1.05rem; }
.sg-style-bold { font-family: "Instrument Serif", Georgia, serif; font-style: italic; font-size: 1.05rem; text-shadow: 0.3px 0 currentColor, -0.3px 0 currentColor; }
.sg-style-simple { font-family: "Instrument Serif", Georgia, serif; font-size: 1.05rem; }

/* ── Upload dropzone ──────────────────────────────────────────────────────── */

.sg-dropzone {
  width: 100%;
  min-height: 160px;
  border: 2px dashed var(--border-2);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  padding: 1.5rem 1rem;
}
.sg-dropzone:hover,
.sg-dropzone.is-dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.sg-dropzone__icon { font-size: 2.5rem; margin-bottom: 10px; display: block; }
.sg-dropzone__text { font-size: 1rem; font-weight: 500; color: var(--text); margin: 0; }
.sg-dropzone__sub { font-size: 0.8rem; color: var(--text-2); opacity: 0.75; margin: 4px 0 0; }
.sg-dropzone__choose-btn { margin-top: 12px; }

.sg-upload-preview-wrap {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  min-height: 90px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem;
  background-image:
    linear-gradient(45deg, #eee 25%, transparent 25%),
    linear-gradient(-45deg, #eee 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, #eee 75%),
    linear-gradient(-45deg, transparent 75%, #eee 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
}
#sg-upload-canvas { max-width: 100%; max-height: 220px; display: block; }
#sg-upload-canvas[hidden] { display: none; }

.sg-checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text);
  cursor: pointer;
}
.sg-checkbox-row input { accent-color: var(--accent); }

/* ── Common export controls ──────────────────────────────────────────────── */

.sg-export-card { margin-top: var(--space-5); }
.sg-bg-row { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.sg-bg-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-2);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.9rem;
}
.sg-bg-pill:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); }
.sg-bg-pill input { accent-color: var(--accent); }

.sg-error {
  margin: 0;
  color: var(--color-danger, #ef4444);
  font-size: 0.875rem;
}
.sg-error[hidden] { display: none; }

.sg-actions { display: flex; gap: 0.6rem; flex-wrap: wrap; margin-top: var(--space-4); }

.sg-privacy-notice { font-size: 0.8rem; color: var(--text-2); opacity: 0.75; text-align: center; margin: var(--space-4) 0 0; }

/* ── Common uses ──────────────────────────────────────────────────────────── */

.sg-uses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}
.sg-uses-grid h3 { font-size: 1rem; margin: 0 0 0.4rem; }
.sg-uses-grid p { margin: 0; font-size: 0.9rem; color: var(--text-2); opacity: 0.85; }