/**
 * ============================================================
 * DASHBOARD CALIDAD PREMIUM - DESIGN SYSTEM 2025
 * INSTANET - Interfaz Enterprise SaaS
 * ============================================================
 * 
 * Estructura:
 * 1. Variables & Tokens de Diseño
 * 2. Reset & Base
 * 3. Layout & Grid System
 * 4. Componentes Atómicos
 * 5. Componentes Compuestos (Cards, Charts)
 * 6. Estados & Feedback
 * 7. Animaciones & Transiciones
 * 8. Responsive & Adaptive
 * 9. Utilidades
 * ============================================================
 */

/* ============================================================
   1. VARIABLES & TOKENS DE DISEÑO
   ============================================================ */
:root {
    /* Paleta Principal - Cian/Púrpura Futurista */
    --color-primary-50: #e0f9ff;
    --color-primary-100: #b8f0ff;
    --color-primary-200: #7ce4ff;
    --color-primary-300: #33d6ff;
    --color-primary-400: #00c4f5;
    --color-primary-500: #00a8d1;
    --color-primary-600: #0088ab;
    --color-primary-700: #006d8a;
    --color-primary-800: #005a73;
    --color-primary-900: #004b5f;
    
    --color-accent-50: #f3e8ff;
    --color-accent-100: #e9d5ff;
    --color-accent-200: #d8b4fe;
    --color-accent-300: #c084fc;
    --color-accent-400: #a855f7;
    --color-accent-500: #9333ea;
    --color-accent-600: #7c3aed;
    --color-accent-700: #6d28d9;
    --color-accent-800: #5b21b6;
    --color-accent-900: #4c1d95;
    
    /* Estados Semánticos */
    --color-success: #10b981;
    --color-success-light: rgba(16, 185, 129, 0.15);
    --color-success-glow: rgba(16, 185, 129, 0.4);
    --color-success-dark: #059669;
    
    --color-warning: #f59e0b;
    --color-warning-light: rgba(245, 158, 11, 0.15);
    --color-warning-glow: rgba(245, 158, 11, 0.4);
    --color-warning-dark: #d97706;
    
    --color-danger: #ef4444;
    --color-danger-light: rgba(239, 68, 68, 0.15);
    --color-danger-glow: rgba(239, 68, 68, 0.4);
    --color-danger-dark: #dc2626;
    
    --color-info: #3b82f6;
    --color-info-light: rgba(59, 130, 246, 0.15);
    --color-info-glow: rgba(59, 130, 246, 0.4);
    
    /* Escala de Grises - Dark Mode Premium */
    --gray-0: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --gray-950: #020617;
    
    /* Backgrounds */
    --bg-page: #0a0f1a;
    --bg-card: rgba(15, 23, 42, 0.7);
    --bg-card-hover: rgba(15, 23, 42, 0.9);
    --bg-glass: rgba(30, 41, 59, 0.5);
    --bg-elevated: rgba(30, 41, 59, 0.8);
    --bg-input: rgba(0, 0, 0, 0.3);
    
    /* Superficies con profundidad */
    --surface-1: rgba(15, 23, 42, 0.4);
    --surface-2: rgba(15, 23, 42, 0.6);
    --surface-3: rgba(15, 23, 42, 0.8);
    
    /* Texto */
    --text-primary: var(--gray-100);
    --text-secondary: var(--gray-400);
    --text-tertiary: var(--gray-500);
    --text-muted: var(--gray-600);
    --text-inverse: var(--gray-950);
    
    /* Bordes */
    --border-subtle: rgba(255, 255, 255, 0.05);
    --border-default: rgba(255, 255, 255, 0.1);
    --border-strong: rgba(255, 255, 255, 0.15);
    --border-primary: rgba(0, 212, 255, 0.3);
    --border-glow: rgba(0, 212, 255, 0.2);
    
    /* Sombras */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
    --shadow-glow-primary: 0 0 40px rgba(0, 212, 255, 0.15);
    --shadow-glow-success: 0 0 40px rgba(16, 185, 129, 0.15);
    --shadow-glow-danger: 0 0 40px rgba(239, 68, 68, 0.15);
    
    /* Tipografía */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Tamaños de fuente */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* Peso de fuente */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;
    
    /* Espaciado */
    --space-0: 0;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Radios de borde */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 24px;
    --radius-full: 9999px;
    
    /* Transiciones */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
    --transition-spring: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
    
    /* Z-index scale */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-popover: 400;
    --z-tooltip: 500;
    --z-toast: 600;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body.dashboard-premium {
    font-family: var(--font-sans);
    background: var(--bg-page);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Effects */
.dashboard-bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 15% 15%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 85% 85%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(16, 185, 129, 0.05) 0%, transparent 60%),
        linear-gradient(180deg, #0a0f1a 0%, #0f172a 50%, #0a0f1a 100%);
    z-index: -2;
}

.dashboard-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M50 0 L50 100 M0 50 L100 50' stroke='%2300d4ff' stroke-opacity='0.02' stroke-width='1'/%3E%3C/svg%3E");
    opacity: 0.6;
}

/* Grid Pattern Overlay */
.grid-overlay {
    position: fixed;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.015) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: -1;
    animation: gridPulse 8s ease-in-out infinite;
}

@keyframes gridPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* ============================================================
   3. LAYOUT & GRID SYSTEM
   ============================================================ */
.dashboard-wrapper {
    max-width: 1600px;
    margin: 0 auto;
    padding: var(--space-6) var(--space-8);
    position: relative;
}

@media (max-width: 768px) {
    .dashboard-wrapper {
        padding: var(--space-4);
    }
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    gap: var(--space-6);
}

.dashboard-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.dashboard-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.dashboard-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
.dashboard-grid.cols-auto { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

@media (max-width: 1200px) {
    .dashboard-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
    .dashboard-grid.cols-3,
    .dashboard-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
    .dashboard-grid.cols-2,
    .dashboard-grid.cols-3,
    .dashboard-grid.cols-4 { grid-template-columns: 1fr; }
}

/* Section Spacing */
.section {
    margin-bottom: var(--space-12);
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-6);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.section-title {
    font-size: var(--text-xl);
    font-weight: var(--font-bold);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.section-title-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-primary-400), var(--color-accent-500));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-lg);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

/* ============================================================
   4. COMPONENTES ATÓMICOS
   ============================================================ */

/* --- Botones --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-accent-600));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--surface-2);
    border-color: var(--border-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    color: var(--text-primary);
    background: var(--surface-1);
}

/* --- Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
}

.badge-success {
    background: var(--color-success-light);
    color: var(--color-success);
    border-color: rgba(16, 185, 129, 0.3);
}

.badge-warning {
    background: var(--color-warning-light);
    color: var(--color-warning);
    border-color: rgba(245, 158, 11, 0.3);
}

.badge-danger {
    background: var(--color-danger-light);
    color: var(--color-danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.badge-info {
    background: var(--color-info-light);
    color: var(--color-info);
    border-color: rgba(59, 130, 246, 0.3);
}

.badge-neutral {
    background: var(--surface-2);
    color: var(--text-secondary);
    border-color: var(--border-default);
}

/* --- Status Indicators --- */
.status-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--radius-full);
    position: relative;
}

.status-dot::after {
    content: '';
    position: absolute;
    inset: -4px;
    border-radius: var(--radius-full);
    border: 2px solid currentColor;
    opacity: 0.3;
    animation: pulseRing 2s infinite;
}

.status-dot.success {
    background: var(--color-success);
    color: var(--color-success);
    box-shadow: 0 0 15px var(--color-success-glow);
}

.status-dot.warning {
    background: var(--color-warning);
    color: var(--color-warning);
    box-shadow: 0 0 15px var(--color-warning-glow);
}

.status-dot.danger {
    background: var(--color-danger);
    color: var(--color-danger);
    box-shadow: 0 0 15px var(--color-danger-glow);
}

@keyframes pulseRing {
    0% { transform: scale(1); opacity: 0.3; }
    100% { transform: scale(1.8); opacity: 0; }
}

/* --- Tendencias --- */
.trend {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-md);
}

.trend-up {
    background: var(--color-success-light);
    color: var(--color-success);
}

.trend-down {
    background: var(--color-danger-light);
    color: var(--color-danger);
}

.trend-stable {
    background: var(--surface-2);
    color: var(--text-secondary);
}

/* --- Tooltips --- */
[data-tooltip] {
    position: relative;
    cursor: help;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    padding: var(--space-2) var(--space-3);
    background: var(--gray-900);
    color: var(--text-primary);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    white-space: nowrap;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: var(--z-tooltip);
}

[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-4px);
}

/* ============================================================
   5. COMPONENTES COMPUESTOS
   ============================================================ */

/* --- Cards Base --- */
.card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    backdrop-filter: blur(20px);
    transition: all var(--transition-base);
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-400), var(--color-accent-500));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-glow-primary);
}

.card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.card-title {
    font-size: var(--text-base);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin-top: var(--space-1);
}

/* --- KPI Cards --- */
.kpi-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    backdrop-filter: blur(20px);
    transition: all var(--transition-base);
    overflow: hidden;
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-400), var(--color-accent-500));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.kpi-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-glow-primary);
}

.kpi-card:hover::before {
    opacity: 1;
}

.kpi-card .card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xl);
    margin-bottom: var(--space-4);
}

.kpi-card .card-icon.cyan {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2), rgba(0, 212, 255, 0.05));
    color: var(--color-primary-400);
}

.kpi-card .card-icon.purple {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(124, 58, 237, 0.05));
    color: var(--color-accent-400);
}

.kpi-card .card-icon.green {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.05));
    color: var(--color-success);
}

.kpi-card .card-icon.orange {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(245, 158, 11, 0.05));
    color: var(--color-warning);
}

.kpi-card .card-icon.red {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.2), rgba(239, 68, 68, 0.05));
    color: var(--color-danger);
}

.kpi-label {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.kpi-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-extrabold);
    background: linear-gradient(135deg, var(--gray-0), var(--gray-300));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.kpi-value.success { background: linear-gradient(135deg, var(--color-success), #34d399); }
.kpi-value.warning { background: linear-gradient(135deg, var(--color-warning), #fbbf24); }
.kpi-value.danger { background: linear-gradient(135deg, var(--color-danger), #f87171); }

.kpi-value.success,
.kpi-value.warning,
.kpi-value.danger {
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.kpi-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-subtle);
}

.kpi-help {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

/* --- Indicator Cards (Gauge) --- */
.indicator-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    backdrop-filter: blur(20px);
    transition: all var(--transition-base);
    overflow: hidden;
    text-align: center;
}

.indicator-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-400), var(--color-accent-500));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.indicator-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-glow-primary);
}

.indicator-card:hover::before {
    opacity: 1;
}

.indicator-card .gauge-container {
    height: 200px;
    margin: var(--space-4) 0;
}

.indicator-info {
    background: var(--surface-1);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    text-align: left;
    margin-top: var(--space-4);
}

.indicator-info h4 {
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary-400);
    margin-bottom: var(--space-2);
}

.indicator-info p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.indicator-limit {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: var(--space-3);
    padding-top: var(--space-3);
    border-top: 1px solid var(--border-subtle);
}

.indicator-limit span:first-child {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.indicator-limit span:last-child {
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--color-success);
}

/* --- Chart Cards --- */
.chart-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    backdrop-filter: blur(20px);
    transition: all var(--transition-base);
    overflow: hidden;
}

.chart-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-400), var(--color-accent-500));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.chart-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-glow-primary);
}

.chart-card:hover::before {
    opacity: 1;
}

.chart-card.full-width {
    grid-column: 1 / -1;
}

.chart-wrapper {
    height: 350px;
    position: relative;
}

.chart-wrapper.small {
    height: 280px;
}

/* --- Info Cards / Legend --- */
.info-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-5);
    backdrop-filter: blur(20px);
    transition: all var(--transition-base);
    overflow: hidden;
}

.info-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-primary-400), var(--color-accent-500));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.info-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-primary);
    box-shadow: var(--shadow-glow-primary);
}

.info-card:hover::before {
    opacity: 1;
}

.info-card h4 {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-2);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.info-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: 1.6;
}

.formula-box {
    margin-top: var(--space-3);
    padding: var(--space-3);
    background: var(--surface-1);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-primary-500);
}

.formula-box code {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-primary-300);
}

/* --- Header Premium --- */
.dashboard-header-premium {
    text-align: center;
    margin-bottom: var(--space-10);
    position: relative;
}

.brand-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.brand-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-primary-400), var(--color-accent-500));
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.35);
    animation: iconFloat 3s ease-in-out infinite;
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.brand-meta {
    text-align: left;
}

.brand-label {
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary-400);
}

.brand-title {
    font-size: var(--text-2xl);
    font-weight: var(--font-extrabold);
    background: linear-gradient(135deg, #fff 0%, var(--color-primary-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.dashboard-header-premium h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-extrabold);
    letter-spacing: -0.02em;
    margin-bottom: var(--space-3);
}

.dashboard-header-premium h1 .gradient-text {
    background: linear-gradient(135deg, #fff 0%, var(--color-primary-300) 50%, var(--color-accent-400) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* --- Status Bar --- */
.status-bar-premium {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-bottom: var(--space-10);
    flex-wrap: wrap;
}

.status-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    background: var(--surface-1);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.status-item:hover {
    background: var(--surface-2);
    border-color: var(--border-primary);
    transform: translateY(-2px);
}

.status-item-text {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-secondary);
}

.status-item-value {
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--text-primary);
}

/* --- Footer --- */
.dashboard-footer {
    text-align: center;
    padding: var(--space-8) var(--space-6);
    border-top: 1px solid var(--border-subtle);
    margin-top: var(--space-12);
}

.update-info {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-5);
    background: var(--surface-1);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-4);
}

.update-label {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.update-value {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.footer-legal-note {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-top: 0.5rem;
    margin-bottom: 0;
    opacity: 0.7;
}

.semester-summary {
    display: flex;
    justify-content: space-around;
    gap: 0.75rem;
    padding: 0.75rem;
    margin-top: 0.5rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 10px;
}

.semester-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.semester-label {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.semester-value {
    font-size: 1.1rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.semester-value.success { color: var(--color-success); }
.semester-value.warning { color: var(--color-warning); }
.semester-value.danger { color: var(--color-danger); }

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-6);
    margin-top: var(--space-4);
}

.footer-link {
    color: var(--color-primary-400);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.footer-link:hover {
    color: var(--color-primary-300);
    text-shadow: 0 0 20px var(--color-primary-glow);
}

/* ============================================================
   6. ESTADOS & FEEDBACK
   ============================================================ */

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-page);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    width: 60px;
    height: 60px;
    position: relative;
}

.loader-ring {
    position: absolute;
    inset: 0;
    border: 3px solid transparent;
    border-top-color: var(--color-primary-400);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-ring:nth-child(2) {
    inset: 8px;
    border-top-color: var(--color-accent-500);
    animation-duration: 1.5s;
    animation-direction: reverse;
}

.loader-ring:nth-child(3) {
    inset: 16px;
    border-top-color: var(--color-success);
    animation-duration: 2s;
}

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

.loading-text {
    margin-top: var(--space-6);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    animation: pulse 1.5s ease-in-out infinite;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--surface-1) 25%, var(--surface-2) 50%, var(--surface-1) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================================
   7. ANIMACIONES & TRANSICIONES
   ============================================================ */

/* Entrance Animations */
[data-animate] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].animated {
    opacity: 1;
    transform: translateY(0);
}

[data-animate="fade-up"] { transform: translateY(30px); }
[data-animate="fade-down"] { transform: translateY(-30px); }
[data-animate="fade-left"] { transform: translateX(30px); }
[data-animate="fade-right"] { transform: translateX(-30px); }
[data-animate="scale"] { transform: scale(0.9); }

/* Stagger delays */
[data-animate]:nth-child(1) { transition-delay: 0ms; }
[data-animate]:nth-child(2) { transition-delay: 100ms; }
[data-animate]:nth-child(3) { transition-delay: 200ms; }
[data-animate]:nth-child(4) { transition-delay: 300ms; }
[data-animate]:nth-child(5) { transition-delay: 400ms; }
[data-animate]:nth-child(6) { transition-delay: 500ms; }

/* Counter Animation */
.count-up {
    font-variant-numeric: tabular-nums;
}

/* Hover Glow Effects */
.hover-glow {
    transition: box-shadow var(--transition-base);
}

.hover-glow:hover {
    box-shadow: 0 0 30px var(--color-primary-glow);
}

/* Focus States */
:focus-visible {
    outline: 2px solid var(--color-primary-400);
    outline-offset: 2px;
}

/* ============================================================
   8. RESPONSIVE & ADAPTIVE
   ============================================================ */

@media (max-width: 1024px) {
    :root {
        --space-8: 1.5rem;
        --space-10: 2rem;
        --space-12: 2.5rem;
    }
    
    .chart-wrapper {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .dashboard-wrapper {
        padding: var(--space-4);
    }
    
    .card {
        padding: var(--space-4);
    }
    
    .kpi-value {
        font-size: var(--text-2xl);
    }
    
    .section-title {
        font-size: var(--text-lg);
    }
    
    .dashboard-header-premium h1 {
        font-size: var(--text-3xl);
    }
    
    .status-bar-premium {
        gap: var(--space-3);
    }
    
    .status-item {
        padding: var(--space-2) var(--space-3);
    }
}

@media (max-width: 480px) {
    .kpi-value {
        font-size: var(--text-xl);
    }
    
    .chart-wrapper {
        height: 250px;
    }
    
    .brand-badge {
        flex-direction: column;
        text-align: center;
    }
    
    .brand-meta {
        text-align: center;
    }
}

/* ============================================================
   9. UTILIDADES
   ============================================================ */

/* Display */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }

/* Flex utilities */
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }

/* Spacing utilities */
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.p-4 { padding: var(--space-4); }

/* Text utilities */
.text-center { text-align: center; }
.text-sm { font-size: var(--text-sm); }
.text-muted { color: var(--text-secondary); }
.font-mono { font-family: var(--font-mono); }

/* Visual utilities */
.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
}

.gradient-border {
    position: relative;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    padding: 1px;
    border-radius: inherit;
    background: linear-gradient(135deg, var(--color-primary-400), var(--color-accent-500));
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}