/* ===== ESTILOS GENERALES ===== */
body {
    font-family: Arial, sans-serif;
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    background-color: #f5f5f5;
}

.container {
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    padding: 30px 20px;
    margin-top: 30px;
}

/* ===== TÍTULO Y BOTÓN DE AYUDA ===== */
.title {
    color: #333;
    margin-bottom: 20px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

.help-btn {
    background: #17a2b8;
    color: white;
    border: none;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
}

.help-btn:hover {
    background: #138496;
    transform: scale(1.1);
}

/* ===== MODAL DE INSTRUCCIONES ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 0;
    border-radius: 10px;
    width: 80%;
    max-width: 700px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close {
    position: absolute;
    top: 15px;
    right: 20px;
    color: #aaa;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
}

.close:hover,
.close:focus {
    color: #000;
    text-decoration: none;
}

.instructions-content {
    padding: 40px 30px 30px 30px;
}

.instructions-content h2 {
    color: #333;
    margin-bottom: 25px;
    text-align: center;
    border-bottom: 2px solid #007bff;
    padding-bottom: 10px;
}

.instructions-content h3 {
    color: #495057;
    margin-top: 25px;
    margin-bottom: 15px;
}

.instructions-content ol {
    padding-left: 20px;
}

.instructions-content ol li {
    margin-bottom: 10px;
    line-height: 1.5;
}

.instructions-content ul {
    padding-left: 20px;
}

.instructions-content ul li {
    margin-bottom: 8px;
    line-height: 1.5;
}

.classes-preview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin: 15px 0;
}

.class-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: #f8f9fa;
    border-radius: 5px;
    font-size: 14px;
}

.class-item span {
    width: 20px;
    height: 20px;
    border-radius: 3px;
    display: inline-block;
}

.instructions-content kbd {
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 3px;
    padding: 2px 6px;
    font-family: monospace;
    font-size: 12px;
    color: #333;
}

/* ===== LAYOUT DE DOS COLUMNAS ===== */
.two-column {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 20px;
}

/* ===== CONTROLES Y FORMULARIOS ===== */
.controls {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
    align-items: center;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

label {
    font-weight: bold;
    color: #333;
}

input, select, button {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

button {
    background: #007bff;
    color: white;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #0056b3;
}

.save-btn {
    background: #28a745;
    padding: 10px 20px;
    font-weight: bold;
}

.save-btn:hover {
    background: #218838;
}

.clear-btn {
    background: #6c757d;
    padding: 10px 20px;
}

.clear-btn:hover {
    background: #545b62;
}

/* ===== BOTONES DE CLASES ===== */
.class-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 20px;
}

.class-btn {
    padding: 10px 15px;
    border: 2px solid transparent;
    border-radius: 5px;
    color: white;
    font-weight: bold;
    transition: all 0.3s;
}

.class-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.class-btn.active {
    border-color: #333;
    box-shadow: 0 0 10px rgba(0,0,0,0.3);
}

/* ===== ANOTACIONES ===== */
.annotations-list {
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 10px;
    max-height: 200px;
    overflow-y: auto;
    margin-bottom: 15px;
}

.annotation-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px;
    margin: 5px 0;
    background: white;
    border-radius: 3px;
    border-left: 4px solid #ccc;
}

.delete-annotation {
    background: #dc3545;
    color: white;
    border: none;
    padding: 4px 8px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 12px;
}

.delete-annotation:hover {
    background: #c82333;
}

.annotation-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

/* ===== PANEL DE SESIONES ===== */
.sessions-panel {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    border: 1px solid #ddd;
}

.sessions-panel h3 {
    margin-top: 0;
    color: #495057;
}

.session-item {
    background: white;
    padding: 15px;
    margin: 10px 0;
    border-radius: 5px;
    border: 1px solid #ddd;
    cursor: pointer;
    transition: all 0.3s;
}

.session-item:hover {
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    transform: translateY(-1px);
}

.session-item.selected {
    border-color: #007bff;
    box-shadow: 0 0 10px rgba(0,123,255,0.2);
}

.session-stats {
    font-size: 12px;
    color: #666;
    margin-top: 5px;
}

.session-actions {
    margin-top: 10px;
    display: flex;
    gap: 5px;
    flex-wrap: wrap;
}

.download-btn {
    background: #17a2b8;
    font-size: 12px;
    padding: 5px 10px;
    margin-top: 5px;
    margin-right: 5px;
}

.download-btn:hover {
    background: #138496;
}

.visualize-btn {
    background: #28a745;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 12px;
    padding: 5px 10px;
    margin-top: 5px;
    cursor: pointer;
}

.visualize-btn:hover {
    background: #218838;
}

.delete-btn {
    background: #dc3545;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 12px;
    padding: 5px 10px;
    margin-top: 5px;
    margin-right: 5px;
    cursor: pointer;
}

.delete-btn:hover {
    background: #c82333;
}

/* ===== ESTILOS ESPECÍFICOS PARA VISUALIZADOR ===== */
.legend {
    background: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 15px;
    margin: 20px 0;
}

.legend-title {
    font-weight: bold;
    margin-bottom: 10px;
    color: #495057;
}

.legend-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.legend-item {
    background: white;
    padding: 8px 12px;
    border-radius: 3px;
    font-size: 14px;
    border: 1px solid #ddd;
    display: flex;
    align-items: center;
}

.images-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.image-card {
    background: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s, box-shadow 0.2s;
}

.image-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.image-preview {
    width: 100%;
    height: auto;
    border-radius: 5px;
    margin-bottom: 10px;
    border: 1px solid #eee;
}

.image-info {
    font-size: 14px;
    color: #495057;
    margin-bottom: 10px;
    line-height: 1.4;
}

.annotations-list {
    margin-top: 10px;
    max-height: 200px;
    overflow-y: auto;
    border: 1px solid #eee;
    border-radius: 3px;
    background: #f8f9fa;
}

.annotation-item {
    padding: 8px 12px;
    margin: 0;
    border-left: 4px solid #ccc;
    background: white;
    border-bottom: 1px solid #eee;
    font-size: 12px;
    line-height: 1.3;
}

.annotation-item:last-child {
    border-bottom: none;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #666;
    font-style: italic;
    background: #f8f9fa;
    border-radius: 5px;
    margin: 20px 0;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .two-column {
        grid-template-columns: 1fr;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .images-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== ESTILOS ESPECÍFICOS PARA PÁGINA DE SESIONES ===== */

/* Estilos específicos del body para la página de sesiones */
.sessions-page {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    margin: 0 !important;
    padding: 20px !important;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    min-height: 100vh !important;
    max-width: none !important;
}

/* Estilos específicos del container para la página de sesiones */
.sessions-page .container {
    max-width: 1200px !important;
    margin: 0 auto !important;
    background: white !important;
    border-radius: 20px !important;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2) !important;
    padding: 40px !important;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header h1 {
    color: #333;
    font-size: 2.5em;
    margin-bottom: 10px;
}

.back-btn {
    background: #6c757d;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    text-decoration: none;
    display: inline-block;
    margin-bottom: 20px;
}

.sessions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.session-card {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.session-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.session-stats {
    display: flex;
    gap: 15px;
    margin: 15px 0;
}

.session-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 15px;
}

.session-actions a, .session-actions button {
    padding: 8px 15px;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-visualize { 
    background: rgba(23, 162, 184, 0.8); 
    color: white; 
}

.btn-augment { 
    background: rgba(255, 193, 7, 0.8); 
    color: #333; 
}

.btn-delete { 
    background: rgba(220, 53, 69, 0.8); 
    color: white; 
}

.btn-create { 
    background: #28a745; 
    color: white; 
    padding: 15px 30px; 
    border: none; 
    border-radius: 10px; 
    font-size: 16px; 
    cursor: pointer; 
}

.no-sessions {
    text-align: center;
    padding: 40px;
    color: #666;
}

.no-sessions code {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 5px;
    display: inline-block;
    margin: 10px 0;
}

/* Estilos específicos del save-btn para la página de sesiones */
.sessions-page .save-btn {
    background: #007bff !important;
    color: white !important;
    padding: 12px 24px !important;
    border: none !important;
    border-radius: 10px !important;
    cursor: pointer !important;
    font-size: 16px !important;
    transition: all 0.3s ease !important;
}

.sessions-page .save-btn:hover {
    background: #0056b3 !important;
    transform: translateY(-2px) !important;
}

/* Modal de augmentación */
.augmentation-modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.augmentation-content {
    background-color: white;
    margin: 5% auto;
    padding: 20px;
    border-radius: 10px;
    width: 80%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
}

.variant-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

.variant-card {
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.variant-card:hover {
    border-color: #007bff;
    background-color: #f8f9fa;
}

.variant-card.selected {
    border-color: #28a745;
    background-color: #d4edda;
}

.variant-card h4 {
    margin: 0 0 10px 0;
    color: #333;
}

.variant-card p {
    margin: 0;
    color: #666;
    font-size: 0.9em;
}

.progress-container {
    margin: 20px 0;
    display: none;
}

.progress-bar {
    width: 100%;
    height: 20px;
    border-radius: 10px;
    background-color: #f0f0f0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: #28a745;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    text-align: center;
    margin-top: 10px;
    font-weight: bold;
}

.modal-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.modal-buttons button {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

.btn-primary {
    background-color: #007bff;
    color: white;
}

.btn-success {
    background-color: #28a745;
    color: white;
}

.btn-secondary {
    background-color: #6c757d;
    color: white;
}

.btn-primary:hover, .btn-success:hover {
    opacity: 0.9;
}

.btn-secondary:hover {
    opacity: 0.8;
}

.augment-btn {
    background-color: #ffc107;
    color: #333;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 0.9em;
    margin-left: 5px;
}

.augment-btn:hover {
    background-color: #e0a800;
}

/* ===== ESTILOS ESPECÍFICOS PARA PÁGINA PRINCIPAL (INDEX) ===== */

/* Estilos específicos del body para la página principal */
.index-page {
    font-family: Arial, sans-serif !important;
    margin: 0 !important;
    padding: 0 !important;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    min-height: 100vh !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    max-width: none !important;
}

.main-container {
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
    text-align: center;
    max-width: 800px;
    width: 90%;
}

.index-page .title {
    color: #333;
    margin-bottom: 30px;
    font-size: 2.5em;
}

.description {
    color: #666;
    margin-bottom: 40px;
    font-size: 1.2em;
    line-height: 1.6;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin: 40px 0;
}

.tool-card {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    padding: 30px 20px;
    border-radius: 15px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.tool-card.augmentation {
    background: linear-gradient(135deg, #ffc107 0%, #fd7e14 100%);
    font-size: 1.1em;
    border: 3px solid #ff8c00;
    animation: pulse-glow 2s infinite;
}

.tool-card.sessions {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
}

.tool-card.visualizer {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%);
}

.tool-card.annotator {
    background: linear-gradient(135deg, #6f42c1 0%, #e83e8c 100%);
}

.tool-icon {
    font-size: 3em;
    margin-bottom: 15px;
    display: block;
}

.tool-title {
    font-size: 1.3em;
    font-weight: bold;
    margin-bottom: 10px;
}

.tool-desc {
    font-size: 0.9em;
    opacity: 0.9;
}

@keyframes pulse-glow {
    0%, 100% { 
        box-shadow: 0 4px 15px rgba(255, 193, 7, 0.6), 0 0 20px rgba(255, 140, 0, 0.3); 
    }
    50% { 
        box-shadow: 0 4px 20px rgba(255, 193, 7, 0.8), 0 0 30px rgba(255, 140, 0, 0.5); 
    }
}

.footer {
    margin-top: 40px;
    color: #999;
    font-size: 0.9em;
}

/* ===== ESTILOS ESPECÍFICOS PARA PÁGINA DE VISUALIZADOR ===== */

/* Estilos específicos del body para la página de visualizador */
.visualizer-page {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif !important;
    margin: 0 !important;
    padding: 20px !important;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
    min-height: 100vh !important;
    max-width: none !important;
}

/* Estilos específicos del container para la página de visualizador */
.visualizer-page .container {
    max-width: 1400px !important;
    margin: 0 auto !important;
    background: white !important;
    border-radius: 20px !important;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2) !important;
    padding: 40px !important;
}

.visualizer-page .header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.visualizer-page .controls {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
}

.visualizer-page .controls select, .visualizer-page .controls button {
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
}

.visualizer-page .controls button {
    background: #007bff;
    color: white;
    border: none;
    cursor: pointer;
}

.gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.visualizer-page .image-card {
    border: 2px solid #ddd;
    border-radius: 10px;
    overflow: hidden;
    background: white;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.visualizer-page .image-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
}

.image-container {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.visualizer-page .image-info {
    padding: 15px;
}

.visualizer-page .image-info h4 {
    margin: 0 0 10px 0;
    color: #333;
    font-size: 14px;
}

.visualizer-page .image-info p {
    margin: 5px 0;
    font-size: 13px;
    color: #666;
}

.no-session {
    text-align: center;
    padding: 60px;
    color: #666;
}

.visualizer-page .back-btn {
    background: #6c757d;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    text-decoration: none;
}

.visualizer-page .loading {
    text-align: center;
    padding: 40px;
    color: #666;
}

.stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.stat-card {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: white;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    flex: 1;
}

.stat-number {
    font-size: 24px;
    font-weight: bold;
    display: block;
}

.stat-label {
    font-size: 12px;
    opacity: 0.9;
}