/* ═══════════════════════════════════════════
   BACKGROUND REMOVER — Glassmorphism Design System
   ═══════════════════════════════════════════ */

.br-main-card {
  max-width: 780px;
  margin: 0 auto;
  position: relative;
}

/* ── Status strip + spinner come from shared css/tool.css (.tool-*) ── */

/* ── Progress Bar ── */
.br-progress-bar-wrap {
  width: 100%;
  height: 6px;
  background: var(--t-border);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}
.br-progress-bar {
  height: 100%;
  width: 0%;
  background: var(--primary);
  border-radius: 100px;
  transition: width 0.3s ease;
  position: relative;
}
.br-progress-bar.indeterminate {
  width: 30% !important;
  animation: brProgressIndeterminate 1.5s ease-in-out infinite;
}
@keyframes brProgressIndeterminate {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(400%); }
}

/* ═══════════════════════════════════════════
   DROPZONE
   ═══════════════════════════════════════════ */
.br-dropzone {
  position: relative;
  border: 2px dashed var(--t-border);
  border-radius: var(--t-radius);
  padding: 3rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.16,1,0.3,1);
  background: var(--t-bg);


  outline: none;
  overflow: hidden;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.br-dropzone::before {
  content: '';
  position: absolute;
  inset: -50%;
  background: none;
  opacity: 0;
  transition: opacity 0.5s;
  pointer-events: none;
}
.br-dropzone:hover,
.br-dropzone:focus-visible {
  border-color: var(--t-accent);
  background: var(--t-accent-light);
  box-shadow:  0 0 0 3px var(--primary-soft);
}
.br-dropzone:hover::before,
.br-dropzone:focus-visible::before { opacity: 1; }
.br-dropzone.dragover {
  border-color: var(--t-accent);
  background: var(--t-accent-light);
  box-shadow:  0 0 0 4px var(--primary-soft);
  transform: scale(1.015);
}
.br-dropzone.dragover .br-drop-ring { animation: brRingPulse 0.8s ease-out infinite; }

.br-dropzone-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  z-index: 1;
}
.br-drop-icon-wrap {
  position: relative;
  width: 80px; height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.5rem;
}
.br-drop-icon {
  font-size: 3rem;
  line-height: 1;
  position: relative;
  z-index: 1;
  transition: transform 0.3s cubic-bezier(0.16,1,0.3,1);
}
.br-dropzone:hover .br-drop-icon,
.br-dropzone.dragover .br-drop-icon { transform: translateY(-4px); }
.br-drop-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid transparent;
  border-top-color: var(--t-accent);
  border-right-color: var(--t-accent);
  opacity: 0;
  transition: opacity 0.35s;
}
.br-dropzone:hover .br-drop-ring,
.br-dropzone:focus-visible .br-drop-ring { opacity: 0.6; }
.br-dropzone.dragover .br-drop-ring { opacity: 1; border-top-color: var(--t-green); border-right-color: var(--t-green); }
@keyframes brRingPulse {
  0% { transform: scale(1); opacity: 0.8; }
  100% { transform: scale(1.45); opacity: 0; }
}
.br-drop-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  margin: 0;
}
.br-drop-sub {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin: 0;
}
.br-drop-formats {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin: 0.25rem 0 0;
}
.br-file-hidden {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

/* ── Privacy Badge ── */
.br-privacy-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  margin-top: 1rem;
  background: var(--t-green-light);
  border: 1px solid var(--success-soft);
  border-radius: var(--t-radius-sm);
  font-size: 0.8rem;
  color: var(--t-green);
  font-weight: 500;


}

/* ── Image Area ── */
.br-image-area {
  display: none;
  margin-top: 1rem;
}
.br-image-area.show { display: block; }
.br-image-area-wrap {
  position: relative;
  border-radius: var(--t-radius);
  overflow: hidden;
  background: repeating-conic-gradient(rgba(128,128,128,0.15) 0% 25%, transparent 0% 50%) 0 0 / 20px 20px;
  max-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
}
.br-selected-img {
  display: block;
  max-width: 100%;
  max-height: 500px;
  width: auto; height: auto;
  object-fit: contain;
}

/* ── Preview Section ── */
.br-preview-section {
  display: none;
  margin-top: 1.5rem;
}
.br-preview-section.show { display: block; }
.br-preview-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: 0.75rem;
}
.br-preview-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.br-preview-card {
  background: var(--t-bg-card);
  border: 1px solid var(--border);
  border-radius: var(--t-radius);
  overflow: hidden;


}
.br-preview-card-header {
  padding: 0.55rem 0.85rem;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-tertiary);
  border-bottom: 1px solid var(--border);
  background: var(--t-bg);
}
.br-preview-img-wrap {
  padding: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 200px;
  background: repeating-conic-gradient(rgba(128,128,128,0.12) 0% 25%, transparent 0% 50%) 0 0 / 20px 20px;
}
.br-preview-img-wrap img,
.br-result-canvas {
  max-width: 100%;
  max-height: 320px;
  border-radius: 4px;
  object-fit: contain;
  display: block;
}
.br-result-canvas {
  opacity: 0;
  transition: opacity 0.5s ease;
}
.br-result-canvas.show { opacity: 1; }
.br-result-img-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

/* ── Shimmer Overlay ── */
.br-shimmer-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.br-shimmer-overlay.active {
  opacity: 1;
  background: linear-gradient(
    110deg,
    transparent 30%,
    rgba(255,255,255,0.06) 50%,
    transparent 70%
  );
  background-size: 200% 100%;
  animation: brShimmer 1.8s ease-in-out infinite;
}
@keyframes brShimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* ═══════════════════════════════════════════
   ACTION BUTTONS
   ═══════════════════════════════════════════ */
.br-actions {
  display: none;
  gap: 0.75rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
  justify-content: center;
}
.br-actions.show { display: flex; }
.br-action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border: 1.5px solid var(--t-border);
  border-radius: 100px;
  background: var(--t-bg);
  color: var(--text-secondary);
  font-family: var(--t-font);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16,1,0.3,1);
  white-space: nowrap;


}
.br-action-btn:hover:not(:disabled) {
  border-color: var(--t-accent);
  color: var(--t-accent);
  background: var(--t-accent-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.br-action-btn:active:not(:disabled) { transform: translateY(0); }
.br-action-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.br-action-btn.primary {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
  box-shadow: var(--shadow-md);
  font-size: 0.95rem;
  padding: 0.85rem 1.5rem;
}
.br-action-btn.primary:hover:not(:disabled) {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.br-action-btn.primary:active:not(:disabled) { transform: translateY(0); }
.br-action-btn.download-btn {
  background: var(--success);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 24px var(--success-soft);
}
.br-action-btn.download-btn:hover:not(:disabled) {
  filter: brightness(1.1);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px var(--success-soft);
}
.br-cancel-btn {
  padding: 0.35rem 0.85rem !important;
  font-size: 0.78rem !important;
  margin-left: auto;
  background: transparent !important;
  border-color: var(--text-tertiary) !important;
  color: var(--text-secondary) !important;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  border-radius: 100px !important;
}
.br-cancel-btn:hover {
  border-color: var(--t-red) !important;
  color: var(--t-red) !important;
  background: var(--t-red-light) !important;
}

/* ── Hide dropzone when image selected ── */
.br-hide-dropzone .br-dropzone,
.br-hide-dropzone .br-privacy-badge { display: none; }

/* ── Toast styles are injected at runtime by ToolCommons.toastInit() ── */

/* ── prefers-reduced-motion ── */
@media (prefers-reduced-motion: reduce) {
  .br-progress-bar.indeterminate { animation: none !important; width: 50% !important; transform: none !important; }
  .br-shimmer-overlay.active { animation: none; background: rgba(255,255,255,0.03); }
  .br-result-canvas { transition: none; }
  .br-shimmer-overlay { transition: none; }
  .br-progress-bar { transition: none; }
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .br-preview-wrap { gap: 0.75rem; }
}
@media (max-width: 768px) {
  .br-dropzone { padding: 2rem 1rem; min-height: 200px; }
  .br-drop-icon { font-size: 2.2rem; }
  .br-drop-icon-wrap { width: 60px; height: 60px; }
  .br-drop-title { font-size: 1rem; }
  .br-drop-sub { font-size: 0.78rem; }
  .br-preview-wrap { grid-template-columns: 1fr; }
  .br-actions { flex-direction: column; }
  .br-action-btn { width: 100%; justify-content: center; padding: 0.65rem 1.2rem; font-size: 0.8rem; }
  .br-action-btn.primary { padding: 0.75rem 1.2rem; font-size: 0.88rem; }
  .br-action-btn.download-btn { padding: 0.65rem 1.4rem; font-size: 0.8rem; }
  .br-privacy-badge { font-size: 0.75rem; padding: 0.5rem 0.75rem; }
  .br-preview-card-header { font-size: 0.65rem; }
}
@media (max-width: 480px) {
  .br-dropzone { padding: 1.5rem 1rem; min-height: 180px; }
  .br-drop-icon { font-size: 1.8rem; }
  .br-drop-icon-wrap { width: 48px; height: 48px; }
  .br-drop-title { font-size: 0.88rem; }
  .br-drop-sub { font-size: 0.72rem; }
  .br-action-btn { padding: 0.6rem 1rem; font-size: 0.76rem; }
  .br-action-btn.primary { padding: 0.7rem 1rem; font-size: 0.82rem; }
  .br-action-btn.download-btn { padding: 0.6rem 1.2rem; font-size: 0.78rem; }
  .br-privacy-badge { font-size: 0.7rem; padding: 0.45rem 0.65rem; }
}