/* ============================================================================
   DASHBOARD ANALÍTICO - SISTEMA DE DISEÑO PREMIUM
   ============================================================================ */

:root {
    /* Paleta de Colores Profesional */
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #818CF8;

    --success-color: #10B981;
    --success-light: #D1FAE5;

    --warning-color: #F59E0B;
    --warning-light: #FEF3C7;

    --danger-color: #EF4444;
    --danger-light: #FEE2E2;

    --info-color: #3B82F6;
    --info-light: #DBEAFE;

    /* Neutrales */
    --bg-primary: rgba(255, 255, 255, 0.9);
    --bg-secondary: rgba(249, 250, 251, 0.7);
    --bg-tertiary: rgba(243, 244, 246, 0.6);
    --glass-bg: rgba(255, 255, 255, 0.85);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);

    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;

    --border-color: #E5E7EB;
    --border-light: #F3F4F6;

    /* Gradientes */
    --gradient-primary: linear-gradient(135deg, #667EEA 0%, #764BA2 100%);
    --gradient-success: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-warning: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
    --gradient-info: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);

    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 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 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Tipografía */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Animaciones */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   RESET Y BASE
   ============================================================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: url('fondo.png') no-repeat center center fixed;
    background-size: cover;
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================================================
   HEADER
   ============================================================================ */

.header {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-xl) 0;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--glass-border);
}

.header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.4;
}

.header-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.header-subtitle {
    font-size: 1.1rem;
    opacity: 0.95;
    font-weight: 400;
    position: relative;
    z-index: 1;
}

/* ============================================================================
   NAVEGACIÓN TABS
   ============================================================================ */

.nav-tabs {
    background: var(--bg-primary);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.tab-btn {
    background: transparent;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    white-space: nowrap;
    position: relative;
}

.tab-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.tab-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.tab-icon {
    font-size: 1.2rem;
}

/* ============================================================================
   MAIN CONTENT
   ============================================================================ */

.main-content {
    padding: var(--spacing-xl) 0;
    min-height: calc(100vh - 300px);
}

.section {
    display: none;
    animation: fadeIn var(--transition-slow);
}

.section.active {
    display: block;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    margin-bottom: var(--spacing-xl);
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    border-left: 4px solid var(--primary-color);
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================================================
   STATS GRID (EDA)
   ============================================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    color: white;
    transition: transform var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.stat-unit {
    font-size: 0.85rem;
    opacity: 0.85;
}

/* ============================================================================
   KPI GRID (DESCRIPTIVO)
   ============================================================================ */

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.kpi-card {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    transition: all var(--transition-base);
    border: 1px solid var(--glass-border);
}

.kpi-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.kpi-card.primary {
    border-color: var(--primary-color);
}

.kpi-card.primary .kpi-icon {
    background: var(--gradient-primary);
}

.kpi-card.success {
    border-color: var(--success-color);
}

.kpi-card.success .kpi-icon {
    background: var(--gradient-success);
}

.kpi-card.warning {
    border-color: var(--warning-color);
}

.kpi-card.warning .kpi-icon {
    background: var(--gradient-warning);
}

.kpi-card.info {
    border-color: var(--info-color);
}

.kpi-card.info .kpi-icon {
    background: var(--gradient-info);
}

.kpi-icon {
    font-size: 2rem;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.kpi-content {
    flex: 1;
}

.kpi-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.kpi-unit {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* ============================================================================
   INSIGHTS GRID (DIAGNÓSTICO)
   ============================================================================ */

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

.insight-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.9) 0%, rgba(249, 250, 251, 0.7) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--glass-border);
    transition: all var(--transition-base);
}

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

.insight-card h4 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.insight-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.insight-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* ============================================================================
   MODEL METRICS (PREDICTIVO)
   ============================================================================ */

.model-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.metric-card {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-base);
    border-top: 1px solid var(--glass-border);
    border-right: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.metric-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-lg);
}

.metric-icon {
    font-size: 2rem;
}

.metric-content {
    flex: 1;
}

.metric-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.metric-hint {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 2px;
}

/* ============================================================================
   CHARTS
   ============================================================================ */

.chart-container {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    margin-bottom: var(--spacing-lg);
}

.chart-header {
    margin-bottom: var(--spacing-md);
}

.chart-header h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.chart-interpretation {
    background: var(--info-light);
    padding: var(--spacing-md);
    border-radius: 8px;
    font-size: 0.9rem;
    line-height: 1.6;
    border-left: 3px solid var(--info-color);
}

.chart-iframe {
    width: 100%;
    height: 450px;
    border: none;
    border-radius: 8px;
}

.chart-iframe.large {
    height: 550px;
}

/* ============================================================================
   RECOMMENDATIONS (PRESCRIPTIVO)
   ============================================================================ */

.recommendations-section {
    margin-bottom: var(--spacing-xl);
}

.recommendations-section h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.recommendation-card {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-base);
    border-top: 1px solid var(--glass-border);
    border-right: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.recommendation-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateX(4px);
}

.recommendation-card.priority-high {
    border-left-color: var(--danger-color);
}

.recommendation-card.priority-medium {
    border-left-color: var(--warning-color);
}

.recommendation-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: var(--spacing-sm);
}

.recommendation-category {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.priority-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.priority-badge.high {
    background: var(--danger-light);
    color: var(--danger-color);
}

.priority-badge.medium {
    background: var(--warning-light);
    color: var(--warning-color);
}

.recommendation-detail {
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.recommendation-detail strong {
    color: var(--text-primary);
}

.recommendation-impact {
    background: var(--success-light);
    padding: var(--spacing-sm);
    border-radius: 8px;
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--success-color);
    font-weight: 500;
}

/* ============================================================================
   SCENARIOS TABLE
   ============================================================================ */

.scenarios-table {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-lg);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    border: 1px solid var(--glass-border);
    margin-top: var(--spacing-xl);
    overflow-x: auto;
}

.scenarios-table h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-md);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--bg-tertiary);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
}

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

tbody tr {
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: var(--bg-secondary);
}

/* ============================================================================
   ALERTS
   ============================================================================ */

.alert {
    padding: var(--spacing-lg);
    border-radius: 12px;
    margin-top: var(--spacing-xl);
    border-left: 4px solid;
}

.alert h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.alert.info {
    background: rgba(219, 234, 254, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-left-color: var(--info-color);
    color: #1E40AF;
    border-top: 1px solid rgba(59, 130, 246, 0.2);
    border-right: 1px solid rgba(59, 130, 246, 0.2);
    border-bottom: 1px solid rgba(59, 130, 246, 0.2);
}

.alert.success {
    background: rgba(209, 250, 229, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-left-color: var(--success-color);
    color: #065F46;
    border-top: 1px solid rgba(16, 185, 129, 0.2);
    border-right: 1px solid rgba(16, 185, 129, 0.2);
    border-bottom: 1px solid rgba(16, 185, 129, 0.2);
}

.alert ol {
    margin-left: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.alert li {
    margin-bottom: var(--spacing-xs);
}

/* ============================================================================
   FOOTER
   ============================================================================ */

.footer {
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    margin-bottom: var(--spacing-xs);
}

.footer-note {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    .header-title {
        font-size: 1.8rem;
    }

    .header-subtitle {
        font-size: 0.95rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .tab-btn span:not(.tab-icon) {
        display: none;
    }

    .kpi-value {
        font-size: 1.5rem;
    }

    .stat-value {
        font-size: 2rem;
    }
}

/* ============================================================================
   LOADING STATE
   ============================================================================ */

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ============================================================================
   UTILITIES
   ============================================================================ */

.text-center {
    text-align: center;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-xs);
}

.mb-2 {
    margin-bottom: var(--spacing-sm);
}

.mb-3 {
    margin-bottom: var(--spacing-md);
}

.mb-4 {
    margin-bottom: var(--spacing-lg);
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--spacing-xs);
}

.mt-2 {
    margin-top: var(--spacing-sm);
}

.mt-3 {
    margin-top: var(--spacing-md);
}

.mt-4 {
    margin-top: var(--spacing-lg);
}