/* LSF Analyzer Pro - Estilos Mejorados v1-4 */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Paleta de colores ultra-moderna */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #f0f9ff;
    --success: #10b981;
    --success-light: #ecfdf5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --info: #3b82f6;
    --info-light: #eff6ff;
    
    /* Grises premium */
    --dark: #0f172a;
    --gray-900: #1e293b;
    --gray-800: #334155;
    --gray-700: #475569;
    --gray-600: #64748b;
    --gray-500: #94a3b8;
    --gray-400: #cbd5e1;
    --gray-300: #e2e8f0;
    --gray-200: #f1f5f9;
    --gray-100: #f8fafc;
    --light: #ffffff;
    
    /* Bordes y sombras sutiles */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Espaciado más fino */
    --radius: 8px;
    --radius-sm: 6px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--gray-100) 0%, var(--gray-200) 50%, var(--gray-300) 100%);
    min-height: 100vh;
    padding: 10px;
    color: var(--dark);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.main-container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--light);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
}

.header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, #7c3aed 100%);
    color: var(--light);
    padding: var(--spacing-2xl);
    text-align: center;
    position: relative;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 25px rgba(99, 102, 241, 0.1);
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.05) 50%, transparent 70%);
    transform: translateX(-100%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
    100% { transform: translateX(-100%); }
}

.header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.025em;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    z-index: 1;
}

.header p {
    font-size: 16px;
    opacity: 0.95;
    font-weight: 400;
    letter-spacing: 0.02em;
    position: relative;
    z-index: 1;
}

.header-buttons {
    position: static;
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.header-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: var(--light);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.header-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.header-btn:hover::before {
    left: 100%;
}

.header-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.config-button {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: var(--light);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    font-size: 13px;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.config-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.config-button:hover::before {
    left: 100%;
}

.config-button:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
}

.config-panel {
    display: none;
    background: linear-gradient(145deg, var(--light) 0%, var(--gray-100) 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    margin: var(--spacing-xl);
    border: 1px solid var(--border);
    animation: slideDown 0.3s ease-out;
    box-shadow: 
        0 20px 40px -15px rgba(0, 0, 0, 0.12),
        0 8px 20px -5px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.config-panel.active {
    display: block;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.config-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.config-section {
    background: linear-gradient(145deg, var(--light) 0%, #fafafa 100%);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 
        0 15px 30px -10px rgba(0, 0, 0, 0.1),
        0 6px 15px -3px rgba(0, 0, 0, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.config-section:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 20px 40px -12px rgba(0, 0, 0, 0.15),
        0 8px 20px -5px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.config-section h4 {
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
    font-size: 16px;
    font-weight: 600;
}

.config-field {
    margin-bottom: var(--spacing-md);
}

.config-field label {
    display: block;
    font-size: 13px;
    color: var(--gray-700);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.config-field input {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-lg);
    font-size: 14px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: linear-gradient(145deg, var(--light) 0%, #f8f8f8 100%);
    box-shadow: 
        inset 0 2px 4px rgba(0, 0, 0, 0.05),
        inset 0 1px 2px rgba(0, 0, 0, 0.03);
}

.config-field input:focus {
    outline: none;
    border-color: var(--primary);
    background: linear-gradient(145deg, var(--light) 0%, #ffffff 100%);
    box-shadow: 
        0 0 0 3px rgba(99, 102, 241, 0.15),
        inset 0 2px 4px rgba(0, 0, 0, 0.02),
        0 4px 12px -2px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.config-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    justify-content: flex-end;
}

.workflow-steps {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gray-100);
    flex-wrap: nowrap;
    gap: 0;
    border-bottom: 1px solid var(--border);
    width: 100%;
    position: relative;
}

.step {
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0 var(--spacing-xs);
}

.step-circle {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gray-300);
    color: var(--gray-600);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    font-size: 13px;
    transition: all 0.3s ease;
    border: 2px solid var(--gray-300);
    z-index: 2;
    position: relative;
}

/* Líneas conectoras entre fases */
.step::before {
    content: '';
    position: absolute;
    top: 16px;
    left: 50%;
    right: -50%;
    height: 2px;
    background: var(--gray-300);
    z-index: 1;
}

.step:last-child::before {
    display: none;
}

.step.active .step-circle {
    background: var(--primary);
    color: var(--light);
    border-color: var(--primary);
    transform: scale(1.1);
    box-shadow: var(--shadow);
}

.step.completed .step-circle {
    background: var(--success);
    color: var(--light);
    border-color: var(--success);
}

.content {
    padding: var(--spacing-xl);
}

.floors-selector {
    background: var(--gray-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border);
}

.floors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.floor-option {
    padding: var(--spacing-xl);
    background: var(--light);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    pointer-events: all;
    position: relative;
    z-index: 10;
    transition: all 0.2s ease;
    font-size: 18px;
    font-weight: 600;
}

.floor-option:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.floor-option.selected {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--light);
    border-color: var(--primary);
}

.tabs-container {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    overflow-x: auto;
    padding: var(--spacing-xs);
}

.tab {
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    font-weight: 500;
    font-size: 14px;
}

.tab.active {
    background: var(--primary);
    color: var(--light);
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.tab:hover:not(.active) {
    border-color: var(--primary);
    background: var(--primary-light);
}

.panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.panel.active {
    display: block;
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: translateY(10px); 
    }
    to { 
        opacity: 1; 
        transform: translateY(0); 
    }
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    background: var(--light);
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-zone:hover {
    background: var(--primary-light);
    border-color: var(--primary);
}

.upload-zone.has-image {
    display: none;
}

.canvas-wrapper {
    position: relative;
    background: var(--gray-100);
    border-radius: var(--radius);
    overflow: hidden;
    margin: var(--spacing-xl) 0;
    border: 1px solid var(--border);
}

.canvas-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--light);
    border-bottom: 1px solid var(--border);
}

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(145deg, var(--light) 0%, #f5f5f5 100%);
    color: var(--gray-700);
    box-shadow: 
        0 6px 15px -5px rgba(0, 0, 0, 0.08),
        0 2px 6px -1px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 10px 25px -8px rgba(0, 0, 0, 0.12),
        0 4px 10px -2px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    background: linear-gradient(145deg, #ffffff 0%, #f8f8f8 100%);
    border-color: var(--primary);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--light);
    border: none;
    box-shadow: 
        0 8px 20px -6px rgba(99, 102, 241, 0.4),
        0 3px 8px -2px rgba(99, 102, 241, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 15px 35px -10px rgba(99, 102, 241, 0.5),
        0 6px 15px -3px rgba(99, 102, 241, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
    background: linear-gradient(135deg, var(--primary-dark) 0%, #4338ca 100%);
}

.btn-success {
    background: var(--success);
    color: var(--light);
    border: none;
}

.btn-warning {
    background: var(--warning);
    color: var(--light);
    border: none;
}

.btn-danger {
    background: var(--danger);
    color: var(--light);
    border: none;
}

.btn-info {
    background: var(--info);
    color: var(--light);
    border: none;
}

.btn-portante {
    background: var(--danger);
    color: var(--light);
    border: none;
}

.btn-no-portante {
    background: var(--warning);
    color: var(--gray-900);
    border: none;
}

.floor-canvas {
    display: block;
    width: 100%;
    max-width: 100%;
    height: auto;
    cursor: crosshair;
    touch-action: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.stat-card {
    background: var(--light);
    padding: var(--spacing-xl);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    position: relative;
    transition: all 0.2s ease;
}

.stat-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.stat-card.confirmed {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-color: var(--success);
}

.stat-value {
    font-size: 28px;
    font-weight: 600;
    color: var(--gray-900);
    transition: all 0.3s ease;
}

.stat-value.locked {
    color: var(--success);
    text-shadow: 0 0 10px rgba(16, 185, 129, 0.3);
}

.stat-label {
    font-size: 12px;
    color: var(--gray-600);
    margin-top: var(--spacing-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-sm {
    font-size: 12px;
    padding: var(--spacing-xs) var(--spacing-md);
}

.measurements-list {
    max-height: 300px;
    overflow-y: auto;
    background: var(--light);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
}

.measurement-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background: var(--gray-100);
    border-radius: var(--radius);
    border-left: 3px solid var(--primary);
}

.measurement-item.portante {
    border-left-color: var(--danger);
    background: #fff5f5;
}

.measurement-item.no-portante {
    border-left-color: var(--warning);
    background: #fffef5;
}

.data-section {
    background: var(--gray-100);
    border-radius: var(--radius);
    padding: var(--spacing-2xl);
    margin: var(--spacing-xl) 0;
    border: 1px solid var(--border);
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 500;
    color: var(--gray-700);
    font-size: 14px;
}

.form-group input,
.form-group select {
    padding: var(--spacing-md);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    transition: all 0.2s ease;
    background: var(--light);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.results-section {
    background: var(--light);
    border-radius: var(--radius);
    padding: var(--spacing-2xl);
    margin-top: var(--spacing-xl);
    display: none;
    border: 1px solid var(--border);
}

.results-section.active {
    display: block;
}

.method-card {
    background: var(--gray-100);
    border-radius: var(--radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    border-left: 4px solid var(--primary);
}

.method-card.warning {
    border-left-color: var(--warning);
    background: #fff3cd;
}

.method-card.info {
    border-left-color: var(--info);
    background: #d1ecf1;
}

.method-card.success {
    border-left-color: var(--success);
    background: #d4edda;
}

.summary-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-xl) 0;
    background: var(--light);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.summary-table th {
    background: var(--primary);
    color: var(--light);
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
}

.summary-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
}

.summary-table td:nth-child(2),
.summary-table td:nth-child(3),
.summary-table td:nth-child(4) {
    text-align: center;
}

.summary-table th:nth-child(2),
.summary-table th:nth-child(3),
.summary-table th:nth-child(4) {
    text-align: center;
}

.summary-table tr:hover {
    background: var(--gray-100);
}

.toast {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.9);
    color: var(--light);
    padding: var(--spacing-md) var(--spacing-2xl);
    border-radius: var(--radius);
    font-size: 14px;
    z-index: 9999;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9998;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-xl);
}

/* Media queries */
@media (orientation: portrait) and (max-width: 768px) {
    .header-buttons {
        position: absolute;
        right: var(--spacing-lg);
        top: var(--spacing-lg);
        flex-direction: column;
        margin-top: 0;
        gap: var(--spacing-xs);
    }
    
    .header-btn, .config-button {
        font-size: 11px;
        padding: var(--spacing-xs) var(--spacing-sm);
        min-width: 80px;
    }
}

@media (max-width: 768px) {
    .input-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .floors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .config-grid {
        grid-template-columns: 1fr;
    }
    
    .workflow-steps {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: 0;
        justify-content: center;
    }
    
    .step {
        padding: 0 var(--spacing-xs);
        font-size: 11px;
    }
    
    .step-circle {
        width: 28px;
        height: 28px;
        font-size: 11px;
    }
    
    .step::before {
        top: 14px;
    }
}

/* Estilos para tablas individuales de elementos */
.individual-element-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-sm) 0;
    background: var(--light);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    font-size: 13px;
}

.individual-element-table th {
    background: var(--gray-600);
    color: var(--light);
    padding: var(--spacing-sm);
    text-align: left;
    font-weight: 600;
    font-size: 12px;
}

.individual-element-table td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border);
}

.individual-element-table th:nth-child(2),
.individual-element-table th:nth-child(3),
.individual-element-table th:nth-child(4),
.individual-element-table th:nth-child(5),
.individual-element-table th:nth-child(6),
.individual-element-table th:nth-child(7),
.individual-element-table th:nth-child(8) {
    text-align: center;
}

.individual-element-table .price-input {
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 4px 6px;
    font-size: 12px;
    background: var(--light);
    transition: all 0.2s ease;
}

.individual-element-table .price-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.1);
}

.individual-element-table .price-input:hover {
    border-color: var(--gray-400);
}

/* Estilos para navegación principal por pestañas */
.main-tabs-nav {
    display: flex;
    background: var(--bg-card);
    border-bottom: 2px solid var(--border);
    padding: 0 var(--spacing-lg);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.main-tabs-nav::-webkit-scrollbar {
    display: none;
}

.main-tab {
    background: none;
    border: none;
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
    white-space: nowrap;
    min-width: 140px;
    text-align: center;
}

.main-tab:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.main-tab.active {
    color: var(--primary);
    background: var(--primary-light);
}

.main-tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary);
    border-radius: 2px 2px 0 0;
}

/* Step numbers */
.tab-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    background: var(--gray-300);
    color: var(--gray-700);
    border-radius: 50%;
    font-size: 11px;
    font-weight: 700;
    margin-right: 8px;
    transition: all 0.2s ease;
}

.main-tab.active .tab-number {
    background: var(--primary);
    color: white;
}

.main-tab:hover .tab-number {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

/* Tab divider */
.tab-divider {
    width: 1px;
    background: var(--gray-300);
    margin: 8px 12px;
    align-self: stretch;
}

.main-tab-content {
    padding: var(--spacing-xl);
    animation: fadeIn 0.3s ease;
}

.main-tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive design para pestañas */
@media (max-width: 768px) {
    .main-tabs-nav {
        padding: 0 var(--spacing-sm);
        overflow-x: auto;
    }

    .main-tab {
        padding: var(--spacing-md) var(--spacing-md);
        font-size: 11px;
        min-width: auto;
        white-space: nowrap;
    }

    .tab-number {
        width: 18px;
        height: 18px;
        font-size: 10px;
        margin-right: 4px;
    }

    .tab-divider {
        margin: 6px 8px;
    }

    .main-tab-content {
        padding: var(--spacing-lg);
    }
}