/**
 * background-remover.css
 * Estilos modernos, responsivos y de alta definicion para el Removedor de Fondos Alter Studio
 */

/* ==========================================================================
   1. OVERLAY DE FONDO Y CONTENEDOR MODAL
   ========================================================================== */
.bg-remover-modal-overlay,
.bg-remover-overlay {
  position: fixed;
  inset: 0;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 100050;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  box-sizing: border-box;
  animation: bgRemoverFadeIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes bgRemoverFadeIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Tarjeta Principal del Modal */
.bg-remover-card,
.bg-remover-modal {
  background: #ffffff;
  width: 100%;
  max-width: 480px;
  border-radius: 1.25rem;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  max-height: 90vh;
  box-sizing: border-box;
}

/* ==========================================================================
   2. CABECERA
   ========================================================================== */
.bg-remover-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.15rem 1.4rem;
  border-bottom: 1px solid #f1f5f9;
  background: #fafaf9;
}

.bg-remover-title-group,
.bg-remover-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.bg-remover-icon {
  width: 42px;
  height: 42px;
  min-width: 42px;
  background: #f3e8ff;
  color: #7c3aed;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.bg-remover-header h3,
.bg-remover-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  color: #0f172a;
  line-height: 1.25;
}

.bg-remover-header p,
.bg-remover-subtitle {
  margin: 0.15rem 0 0;
  font-size: 0.78rem;
  color: #64748b;
  line-height: 1.3;
}

.bg-remover-close,
.bg-remover-close-btn {
  background: transparent;
  border: none;
  font-size: 1.6rem;
  color: #94a3b8;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.bg-remover-close:hover,
.bg-remover-close-btn:hover {
  color: #0f172a;
  background: #e2e8f0;
}

/* ==========================================================================
   3. CUERPO Y VISTA PREVIA
   ========================================================================== */
.bg-remover-body {
  padding: 1.2rem 1.4rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
  box-sizing: border-box;
}

/* Contenedor de Vista Previa con Marco */
.bg-remover-preview-container {
  position: relative;
  width: 100%;
  height: 220px;
  border-radius: 14px;
  overflow: hidden;
  border: 1.5px solid #e2e8f0;
  background-color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

/* Fondo Ajedrezado de Transparencia */
.bg-remover-checkerboard,
.bg-remover-preview-checkered {
  width: 100%;
  height: 100%;
  background-color: #f8fafc;
  background-image: 
    linear-gradient(45deg, #e2e8f0 25%, transparent 25%), 
    linear-gradient(-45deg, #e2e8f0 25%, transparent 25%), 
    linear-gradient(45deg, transparent 75%, #e2e8f0 75%), 
    linear-gradient(-45deg, transparent 75%, #e2e8f0 75%);
  background-size: 16px 16px;
  background-position: 0 0, 0 8px, 8px -8px, -8px 0px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 0.75rem;
  box-sizing: border-box;
}

/* Canvas de Presentacion de la Imagen Sin Fondo */
#bgRemoverPreviewCanvas,
.bg-remover-checkerboard canvas,
.bg-remover-preview-checkered canvas {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
  margin: auto;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.12));
}

/* Badge de Estado */
.bg-remover-badge-pill,
.bg-remover-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(15, 23, 42, 0.75);
  color: #ffffff;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  letter-spacing: 0.02em;
  pointer-events: none;
}

/* ==========================================================================
   4. CONTROLES Y AJUSTES
   ========================================================================== */
.bg-remover-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.control-row,
.bg-remover-control-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.control-label,
.bg-remover-label-row {
  font-size: 0.84rem;
  font-weight: 600;
  color: #334155;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.label-with-val {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Selector de Modo (Contorno vs Global) */
.bg-mode-selector,
.bg-remover-mode-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.mode-btn,
.bg-remover-mode-btn {
  background: #f8fafc;
  border: 1.5px solid #e2e8f0;
  padding: 0.55rem 0.75rem;
  border-radius: 10px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #475569;
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-align: center;
  user-select: none;
}

.mode-btn:hover,
.bg-remover-mode-btn:hover {
  background: #f1f5f9;
  border-color: #cbd5e1;
}

.mode-btn.active,
.bg-remover-mode-btn.active {
  background: #f5f3ff;
  border-color: #7c3aed;
  color: #6d28d9;
  font-weight: 700;
  box-shadow: 0 0 0 1px #7c3aed;
}

/* Slider de Tolerancia / Sensibilidad */
.tolerance-val,
.bg-remover-slider-val {
  font-size: 0.85rem;
  font-weight: 800;
  color: #7c3aed;
}

.tolerance-slider,
.bg-remover-slider {
  width: 100%;
  height: 6px;
  border-radius: 4px;
  background: #e2e8f0;
  outline: none;
  accent-color: #7c3aed;
  cursor: pointer;
  margin: 0.35rem 0;
}

/* Opciones de Color de Fondo */
.color-picker-row {
  margin-top: 0.1rem;
}

.color-options-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
}

.color-preset-label {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  color: #334155;
  cursor: pointer;
  user-select: none;
}

.color-preset-label input[type="radio"] {
  accent-color: #7c3aed;
  cursor: pointer;
}

#bgCustomColorPicker {
  width: 32px;
  height: 32px;
  padding: 0;
  border: 1.5px solid #cbd5e1;
  border-radius: 8px;
  cursor: pointer;
  background: transparent;
  transition: border-color 0.15s ease;
}

#bgCustomColorPicker:not(:disabled):hover {
  border-color: #7c3aed;
}

/* ==========================================================================
   5. PIE Y BOTONES DE ACCION
   ========================================================================== */
.bg-remover-footer {
  padding: 1rem 1.4rem;
  background: #fafaf9;
  border-top: 1px solid #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  box-sizing: border-box;
}

.bg-remover-footer .footer-action-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Boton Secundario */
.bg-remover-footer .btn-secondary,
.bg-remover-btn-secondary {
  background: #ffffff;
  border: 1.5px solid #cbd5e1;
  color: #475569;
  padding: 0.55rem 0.9rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.bg-remover-footer .btn-secondary:hover,
.bg-remover-btn-secondary:hover {
  background: #f1f5f9;
  color: #0f172a;
  border-color: #94a3b8;
}

/* Boton Cancelar */
#btnCancelBgRemover,
.bg-remover-btn-cancel {
  background: transparent;
  border: none;
  color: #64748b;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.55rem 0.85rem;
  cursor: pointer;
  border-radius: 8px;
  transition: all 0.15s ease;
}

#btnCancelBgRemover:hover,
.bg-remover-btn-cancel:hover {
  color: #0f172a;
  background: #f1f5f9;
}

/* Boton Primario (Aplicar) */
.bg-remover-footer .btn-primary,
.bg-remover-btn-primary {
  background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
  color: #ffffff;
  border: none;
  padding: 0.6rem 1.15rem;
  font-size: 0.84rem;
  font-weight: 700;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(124, 58, 237, 0.28);
  transition: all 0.15s ease;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.bg-remover-footer .btn-primary:hover,
.bg-remover-btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.38);
}

.bg-remover-footer .btn-primary:active,
.bg-remover-btn-primary:active {
  transform: translateY(0);
}

/* ==========================================================================
   6. RESPONSIVE (Móviles y Pantallas Pequeñas)
   ========================================================================== */
@media (max-width: 600px) {
  .bg-remover-modal-overlay,
  .bg-remover-overlay {
    padding: 0.75rem;
  }

  .bg-remover-card,
  .bg-remover-modal {
    width: 95vw;
    max-height: 92vh;
    border-radius: 1rem;
  }

  .bg-remover-header {
    padding: 0.9rem 1.1rem;
  }

  .bg-remover-icon {
    width: 38px;
    height: 38px;
    min-width: 38px;
    font-size: 1.2rem;
  }

  .bg-remover-header h3 {
    font-size: 0.98rem;
  }

  .bg-remover-body {
    padding: 1rem 1.1rem;
    gap: 0.9rem;
  }

  .bg-remover-preview-container {
    height: 185px;
  }

  .mode-btn,
  .bg-remover-mode-btn {
    font-size: 0.74rem;
    padding: 0.5rem 0.4rem;
  }

  .bg-remover-footer {
    padding: 0.85rem 1.1rem;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: space-between;
  }

  .bg-remover-footer .btn-secondary {
    font-size: 0.75rem;
    padding: 0.5rem 0.7rem;
  }

  .bg-remover-footer .btn-primary {
    font-size: 0.8rem;
    padding: 0.55rem 0.95rem;
  }
}