@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  --bg-main: #0b0c10;
  --bg-card: rgba(22, 24, 37, 0.7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(255, 255, 255, 0.15);
  
  --primary: #4f46e5;
  --primary-glow: rgba(79, 70, 229, 0.4);
  --accent: #06b6d4;
  --accent-glow: rgba(6, 182, 212, 0.4);
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-active: #ffffff;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.7);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.2) transparent;
}

body {
  font-family: 'Outfit', sans-serif;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.1) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(6, 182, 212, 0.1) 0px, transparent 50%);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  overflow: hidden;
}

/* App Layout */
.app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: 380px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-right: 1px solid var(--border-color);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  overflow-y: auto;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: 0 0 15px var(--primary-glow);
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(to right, #ffffff, #c7d2fe);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-title {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* Config / Connection Panel */
.config-group {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1rem;
}

.input-field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.input-field label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.input-field input {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.625rem 0.875rem;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition-fast);
}

.input-field input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.select-field {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.625rem 0.875rem;
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.875rem;
  outline: none;
  transition: var(--transition-fast);
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.875rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

.select-field:focus {
  border-color: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
}

.select-field option {
  background: #161825;
  color: var(--text-main);
}

/* Drag and Drop Zone */
.upload-zone {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.01);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.upload-zone:hover {
  border-color: var(--primary);
  background: rgba(79, 70, 229, 0.03);
}

.upload-icon {
  font-size: 2.25rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.upload-text {
  font-size: 0.875rem;
  color: var(--text-main);
  font-weight: 500;
}

.upload-subtext {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Image List / Inventory */
.image-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 250px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.image-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.625rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: var(--transition-fast);
}

.image-item:hover {
  border-color: var(--border-color-hover);
  background: rgba(255, 255, 255, 0.04);
}

.image-item.uploading {
  border-color: var(--accent);
  position: relative;
  overflow: hidden;
}

.image-item.uploading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 2px;
  background: var(--accent);
  width: 70%;
  animation: uploadProgress 1.5s infinite ease-in-out;
}

@keyframes uploadProgress {
  0% { left: -30%; width: 30%; }
  50% { width: 40%; }
  100% { left: 100%; width: 10%; }
}

.item-thumb {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  object-fit: cover;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
}

.item-info {
  flex: 1;
  min-width: 0;
}

.item-name {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.item-details {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.125rem;
}

.btn-icon {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  border-radius: 4px;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  color: #ef4444;
  background: rgba(239, 68, 68, 0.1);
}

/* General Buttons */
.btn-primary {
  width: 100%;
  background: linear-gradient(135deg, var(--primary), #6366f1);
  color: #ffffff;
  border: none;
  border-radius: 8px;
  padding: 0.875rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--primary-glow);
  filter: brightness(1.1);
}

.btn-primary:active {
  transform: translateY(1px);
}

.btn-primary:disabled {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

.btn-secondary {
  width: 100%;
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  font-family: inherit;
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--border-color-hover);
  background: rgba(255, 255, 255, 0.03);
}

/* Canvas Area */
.canvas-wrapper {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  background-color: #0d0e15;
  background-image: 
    radial-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 20px 20px;
}

.canvas-toolbar {
  height: 64px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(13, 14, 21, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  z-index: 5;
}

.canvas-title {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-main);
}

.canvas-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.toolbar-info {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.canvas-viewport {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem;
  position: relative;
}

/* The actual Konva container styling */
#konva-container {
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: #ffffff; /* El fondo del lienzo A0 será blanco en el canvas */
  border-radius: 4px;
}

/* Details Panel (Floating or Sidebar Bottom) */
.selected-details {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.dimension-badge-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

.dimension-badge {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 0.5rem;
  font-size: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.dimension-label {
  color: var(--text-muted);
}

.dimension-value {
  font-weight: 600;
  color: var(--text-main);
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: rgba(22, 24, 37, 0.95);
  border: 1px solid var(--accent);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), 0 0 15px var(--accent-glow);
  padding: 1rem 1.5rem;
  border-radius: 8px;
  color: var(--text-main);
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  transform: translateY(100px);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s;
  z-index: 100;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-error {
  border-color: #ef4444;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5), 0 0 15px rgba(239, 68, 68, 0.2);
}

.toast-icon {
  font-size: 1.25rem;
}

/* Responsive */
@media (max-width: 900px) {
  .app-container {
    flex-direction: column;
  }
  .sidebar {
    width: 100%;
    height: auto;
    max-height: 40vh;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  .canvas-viewport {
    padding: 1rem;
  }
}