/* ============================================
   CANVAS CSS
   Canvas principal, controles y navegación
   ============================================ */

/* Canvas Central - FULLSCREEN FIX */
.canvas-container {
    position: relative;
    background: var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    height: 100%; /* CRITICAL: Use all available space */
}

/* Global Watermark - Always on top like Windows unauthenticated */
.global-watermark {
    position: fixed;
    bottom: 20px;
    right: 20px;
    color: rgba(0, 0, 0, 0.18);
    font-size: 0.85em;
    font-weight: 600;
    pointer-events: none;
    user-select: none;
    z-index: 9999;
    letter-spacing: 0.5px;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.3);
}

.canvas-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
    height: 100%;
}

#canvas {
    display: block;
    width: 100%; /* Use full container width */
    height: 100%; /* Use full container height */
    max-width: 100%;
    max-height: 100%;
    cursor: crosshair;
    box-shadow: 0 4px 20px var(--shadow-strong);
}

#canvas.cursor-move {
    cursor: move;
}

#canvas.cursor-grab {
    cursor: grab;
}

#canvas.cursor-grabbing {
    cursor: grabbing;
}

#canvas.cursor-paint {
    cursor: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24"><circle cx="12" cy="12" r="8" fill="rgba(102,126,234,0.5)" stroke="white" stroke-width="2"/></svg>') 12 12, crosshair;
}

/* Controles de Canvas */
.canvas-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 100;
}

.control-group {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    padding: 8px;
    display: flex;
    gap: 4px;
}

.control-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--white);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
}

.control-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.control-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.control-btn.active {
    background: var(--success);
    color: var(--white);
}

.zoom-level {
    background: transparent;
    padding: 4px 0;
    font-size: 0.75em;
    font-weight: 700;
    text-align: center;
    color: var(--primary);
}

/* Navegación de Imágenes */
.image-navigation {
    position: absolute;
    top: 50%;
    left: 20px;
    right: 20px;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    pointer-events: none;
    z-index: 50;
}

.nav-btn {
    width: 48px;
    height: 48px;
    background: var(--white);
    border: none;
    border-radius: 50%;
    box-shadow: 0 4px 12px var(--shadow);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    color: var(--dark);
    transition: var(--transition);
    pointer-events: auto;
}

.nav-btn:hover:not(:disabled) {
    background: var(--primary);
    color: var(--white);
    transform: scale(1.1);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Información de Imagen */
.image-info {
    position: absolute;
    top: 20px;
    left: 20px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    padding: 10px 15px;
    font-size: 0.85em;
    z-index: 100;
}

.image-info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 4px;
}

.image-info-item:last-child {
    margin-bottom: 0;
}

.image-info-item i {
    color: var(--primary);
}

.image-info-value {
    font-weight: 600;
}

/* Rotation Controls */
.rotation-controls {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 10px var(--shadow);
    padding: 10px 15px;
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 100;
    font-size: 0.9em;
}

.rotation-controls i {
    color: var(--primary);
}

.rotation-controls span {
    font-weight: 600;
    min-width: 35px;
    text-align: center;
}

/* ============================================
   ANNOTATIONS BAR (Bottom)
   Lista de anotaciones con miniaturas
   ============================================ */

.annotations-bar {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--white);
    border-top: 1px solid var(--border);
    box-shadow: 0 -2px 6px var(--shadow);
    z-index: 200;
    transition: var(--transition);
}

.annotations-bar.collapsed {
    height: 26px;
}

.annotations-bar.collapsed .annotations-list {
    display: none;
}

.annotations-bar.collapsed .btn-collapse-vertical i {
    transform: rotate(180deg);
}

.annotations-bar-content {
    display: flex;
    align-items: center;
    height: 100%;
    gap: 2px;
}

.btn-collapse-vertical {
    width: 24px;
    height: 24px;
    border: none;
    background: var(--gray-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--dark);
    flex-shrink: 0;
    padding: 0;
    margin: 1px 3px;
    border-radius: 3px;
}

.btn-collapse-vertical:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-collapse-vertical i {
    transition: transform 0.3s ease;
    font-size: 0.9em;
}

.annotations-list {
    display: flex;
    gap: 6px;
    padding: 4px 6px;
    overflow-x: auto;
    max-height: 110px;
    scrollbar-width: thin;
    flex: 1;
}

.annotations-list::-webkit-scrollbar {
    height: 6px;
}

.annotations-list::-webkit-scrollbar-track {
    background: var(--gray-light);
}

.annotations-list::-webkit-scrollbar-thumb {
    background: var(--gray);
    border-radius: 3px;
}

.annotations-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary);
}

.empty-annotations {
    color: var(--gray-dark);
    font-size: 0.75em;
    font-style: italic;
    padding: 4px;
    text-align: center;
    width: 100%;
}

.annotation-card {
    min-width: 100px;
    max-width: 100px;
    background: var(--white);
    border: 2px solid var(--gray);
    border-radius: 6px;
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
}

.annotation-card:hover {
    border-color: var(--primary);
    box-shadow: 0 2px 8px var(--shadow);
    transform: translateY(-2px);
}

.annotation-card.selected {
    border-color: var(--primary);
    border-width: 3px;
    box-shadow: 0 2px 12px var(--shadow-strong);
}

.annotation-thumbnail {
    width: 100%;
    height: 75px;
    overflow: hidden;
    background: var(--gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.annotation-thumbnail canvas {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.annotation-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 3px;
    pointer-events: none;
}

.annotation-class-label {
    display: inline-block;
    padding: 2px 4px;
    border-radius: 3px;
    font-size: 0.65em;
    font-weight: 600;
    color: white;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
    align-self: flex-start;
    backdrop-filter: blur(4px);
}

.annotation-type-badge {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.6em;
    font-weight: 500;
    color: white;
    background: rgba(0, 0, 0, 0.6);
    align-self: flex-start;
    margin-top: 2px;
    backdrop-filter: blur(4px);
}

.annotation-delete-btn {
    position: absolute;
    top: 3px;
    right: 3px;
    width: 22px;
    height: 22px;
    border: none;
    background: rgba(231, 76, 60, 0.9);
    border-radius: 3px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.75em;
    transition: var(--transition);
    pointer-events: auto;
    backdrop-filter: blur(4px);
}

.annotation-delete-btn:hover {
    background: var(--danger);
    transform: scale(1.1);
}

.annotation-range-label {
    padding: 2px 4px;
    font-size: 0.65em;
    color: var(--dark);
    background: var(--gray-light);
    text-align: center;
    font-weight: 500;
    border-top: 1px solid var(--border);
}

/* Annotation item - compatible with annotation-card */
.annotation-item {
    min-width: 100px;
    max-width: 100px;
    background: var(--white);
    border: 2px solid var(--gray);
    border-radius: 6px;
    padding: 0;
    cursor: pointer;
    transition: var(--transition);
    overflow: hidden;
}

.annotation-item:hover {
    border-color: var(--primary);
    box-shadow: 0 2px 8px var(--shadow);
    transform: translateY(-2px);
}

.annotation-item.selected {
    border-color: var(--primary);
    border-width: 3px;
    box-shadow: 0 2px 12px var(--shadow-strong);
}

/* ============================================
   FLOATING TOOLS MENU
   Menú flotante de herramientas en el lado izquierdo
   ============================================ */

.floating-tools {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: 12px;
    z-index: 100;
}

.floating-section {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 16px var(--shadow);
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.floating-section h4 {
    font-size: 0.7em;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray);
    margin: 0 0 4px 0;
    font-weight: 600;
}

.floating-tools .tool-btn {
    width: 42px;
    height: 42px;
    border: 2px solid var(--border);
    background: var(--white);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
}

.floating-tools .tool-btn i {
    font-size: 1.3em;
}

.floating-tools .tool-btn:hover:not(.active) {
    border-color: var(--primary);
    background: rgba(102, 126, 234, 0.1);
}

.floating-tools .tool-btn.active {
    border-color: var(--primary);
    background: var(--primary);
    color: var(--white);
}

.floating-tools #btnEraseMode.active {
    border-color: var(--danger);
    background: var(--danger);
    color: var(--white);
}

.floating-zoom {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.floating-zoom-display {
    font-size: 0.75em;
    font-weight: 700;
    text-align: center;
    color: var(--primary);
    padding: 4px 0;
}

.floating-zoom-btn {
    width: 42px;
    height: 36px;
    border: none;
    background: var(--white);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    font-size: 1em;
}

.floating-zoom-btn:hover:not(:disabled) {
    background: var(--primary);
    color: var(--white);
}

.floating-zoom-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.floating-view-controls {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.floating-view-btn {
    width: 42px;
    height: 36px;
    border: 2px solid var(--border);
    background: var(--white);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    font-size: 0.95em;
}

.floating-view-btn:hover:not(.active) {
    border-color: var(--primary);
    background: rgba(102, 126, 234, 0.1);
}

.floating-view-btn.active {
    border-color: var(--success);
    background: var(--success);
    color: var(--white);
}

.floating-mask-controls {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.floating-brush-slider {
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    background: var(--gray-light);
    border-radius: 2px;
    outline: none;
}

.floating-brush-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.floating-brush-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.floating-brush-value {
    font-size: 0.75em;
    font-weight: 600;
    color: var(--gray);
}

.floating-erase-btn {
    width: 42px;
    height: 36px;
    border: 2px solid var(--border);
    background: var(--white);
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--dark);
    font-size: 0.95em;
}

.floating-erase-btn:hover:not(.active) {
    border-color: var(--danger);
    background: rgba(231, 76, 60, 0.1);
}

.floating-erase-btn.active {
    border-color: var(--danger);
    background: var(--danger);
    color: var(--white);
}

/* Vertical Slider for Brush Size */
.vertical-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 50px;
    height: 6px;
    background: var(--gray-light);
    border-radius: 3px;
    outline: none;
    transform: rotate(-90deg);
    margin: 35px 0;
}

.vertical-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.vertical-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* Rotation Slider */
.rotation-section {
    min-width: 200px;
}

.rotation-slider {
    width: 150px;
    height: 4px;
    background: var(--gray-light);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
}

.rotation-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.rotation-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.rotation-slider:hover::-webkit-slider-thumb {
    background: var(--primary-dark);
}

.rotation-slider:hover::-moz-range-thumb {
    background: var(--primary-dark);
}

.control-btn-small {
    width: 24px;
    height: 24px;
    padding: 0;
    background: var(--gray-light);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--dark);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75em;
    transition: var(--transition);
}

.control-btn-small:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

/* ============================================
   TIMELINE NAVIGATOR (Time Series)
   Barra de navegación temporal para series temporales
   ============================================ */

.timeline-container {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: rgba(255, 255, 255, 0.95);
    border-top: 2px solid var(--border);
    box-shadow: 0 -2px 8px var(--shadow);
    z-index: 50;
    backdrop-filter: blur(4px);
}

#timelineCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.timeline-viewport {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    background: rgba(102, 126, 234, 0.2);
    border-left: 2px solid var(--primary);
    border-right: 2px solid var(--primary);
    cursor: grab;
    pointer-events: auto;
    transition: background 0.15s ease;
}

.timeline-viewport:hover {
    background: rgba(102, 126, 234, 0.3);
}

.timeline-viewport:active {
    cursor: grabbing;
    background: rgba(102, 126, 234, 0.4);
}

/* Adjust annotations-bar when timeline is visible */
.canvas-container:has(.timeline-container:not([style*="display: none"])) .annotations-bar {
    bottom: 60px;
}

/* Adjust canvas height when timeline is visible */
.canvas-container:has(.timeline-container:not([style*="display: none"])) {
    padding-bottom: 60px;
}