/* ===== BASE CSS - ESTILOS COMPARTIDOS ===== */

/* ===== VARIABLES CSS ===== */
:root {
    /* Colors - Nueva Paleta Azul */
    --primary-color: #1e3a8a;      /* Azul profundo - Encabezados, elementos principales */
    --accent-color: #2563eb;       /* Azul vibrante - Botones, elementos interactivos */
    --secondary-color: #0f172a;    /* Azul casi negro - Textos, barras de navegación */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    /* Background Colors - Nueva Paleta Azul con Blanco */
    --bg-primary: #f8fafc;         /* Blanco azulado muy claro - Fondo principal */
    --bg-secondary: #ffffff;       /* Blanco puro - Fondo secundario */
    --bg-tertiary: #f1f5f9;       /* Gris muy claro - Fondo terciario */
    --bg-card: #ffffff;            /* Blanco puro - Fondo para tarjetas */
    --bg-hover: #e2e8f0;           /* Gris muy claro - Fondo para hover */
    
    /* Text Colors - Nueva Paleta Azul con Blanco */
    --text-primary: #0f172a;       /* Azul casi negro - Texto principal */
    --text-secondary: #1e293b;     /* Azul oscuro - Texto secundario */
    --text-light: #64748b;         /* Gris azulado - Texto claro */
    --text-white: #ffffff;
    --text-muted: #94a3b8;         /* Gris medio - Textos secundarios */
    
    /* Border Colors - Nueva Paleta Azul con Blanco */
    --border-color: #e2e8f0;       /* Gris muy claro - Bordes generales */
    --border-light: #f1f5f9;       /* Gris extremadamente claro - Bordes ligeros */
    --border-accent: #2563eb;      /* Azul vibrante - Bordes destacados */
    
    /* Colores adicionales para más blancos */
    --white-pure: #ffffff;         /* Blanco puro */
    --white-soft: #fafbfc;         /* Blanco suave */
    --white-warm: #fefefe;         /* Blanco cálido */
    --blue-ultra-light: #f8fafc;   /* Azul ultra claro */
    
    /* Spacing - Optimizado para UX compacta */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 0.75rem;
    --spacing-lg: 1rem;
    --spacing-xl: 1.25rem;
    --spacing-2xl: 1.75rem;
    
    /* Border Radius */
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --border-radius-xl: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Font Sizes */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* Font Families */
    --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Monaco', 'Consolas', monospace;
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Z-index */
    --z-modal: 1000;
    --z-dropdown: 100;
    --z-sticky: 50;
}

/* ===== RESET Y BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--white-pure) 0%, var(--blue-ultra-light) 50%, var(--white-soft) 100%);
    overflow-x: hidden;
    min-height: 100vh;
}

/* ===== TIPOGRAFÍA ===== */
ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

ul li, ol li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    position: relative;
}

ul li::before {
    content: '▸';
    color: var(--primary-color);
    font-weight: bold;
    position: absolute;
    left: -20px;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    position: relative;
}

h1::before, h2::before, h3::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 50%;
    width: 4px;
    height: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    transition: height 0.3s ease;
    transform: translateY(-50%);
}

h1:hover::before, h2:hover::before, h3:hover::before {
    height: 80%;
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    line-height: 1.5;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

a:hover {
    color: var(--accent-color);
    text-shadow: 0 0 8px rgba(14, 165, 233, 0.3);
}

a:not(.nav-link):not(.btn):not(.social-links a)::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-color);
    transition: width 0.3s ease;
}

a:not(.nav-link):not(.btn):not(.social-links a):hover::after {
    width: 100%;
}

/* ===== LAYOUT OPTIMIZADO ===== */
/* Asegurar que el contenido principal no quede debajo del navbar */
#main-content {
    padding-top: 60px; /* Altura del navbar */
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Layout compacto para mejor UX */
.section {
    padding: var(--spacing-xl) 0;
    margin: 0;
    background: var(--white-pure);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.section:first-of-type {
    padding-top: 100px; /* Compensar navbar fijo + espacio extra */
}

/* Estilos para tarjetas con más blanco */
.card {
    background: var(--white-pure);
    border: 1px solid var(--border-light);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--border-accent);
}

/* Asegurar que los títulos no queden debajo del navbar */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md) 0;
    scroll-margin-top: 120px; /* Para enlaces internos */
}

/* Títulos principales con mejor espaciado */
.page-title {
    padding-top: 140px;
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.page-title h1 {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-md);
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(14, 165, 233, 0.3);
}

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

.section.compact {
    padding: var(--spacing-lg) 0;
}

/* Grid optimizado para contenido denso */
.content-grid {
    display: grid;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.content-grid.two-columns {
    grid-template-columns: 1fr 1fr;
}

.content-grid.three-columns {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.content-grid.four-columns {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-md) 0;
}

.section-header h2 {
    margin-bottom: var(--spacing-sm);
    color: var(--primary-color);
    text-shadow: 0 0 20px rgba(14, 165, 233, 0.3);
    transition: var(--transition);
}

.section-header h2:hover {
    text-shadow: 0 0 30px rgba(14, 165, 233, 0.5);
    transform: scale(1.02);
}

.section-header h2 i {
    color: var(--accent-color);
    margin-right: var(--spacing-sm);
    transition: var(--transition);
}

.section-header h2:hover i {
    color: var(--primary-color);
    transform: scale(1.1);
}

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

.section-header p i {
    color: var(--primary-color);
    margin-right: var(--spacing-sm);
    transition: var(--transition);
}

.section-header p:hover i {
    color: var(--accent-color);
    transform: scale(1.1);
}

.section-header i {
    font-size: var(--font-size-xl);
    text-shadow: 0 0 10px rgba(14, 165, 233, 0.3);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.section-header:hover i {
    animation: bounce 0.6s ease-in-out;
}

@keyframes bounce {
    0%, 20%, 60%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    80% { transform: translateY(-5px); }
}

.section-header:hover h2 {
    animation: glow 0.6s ease-in-out;
}

@keyframes glow {
    0%, 100% { text-shadow: 0 0 20px rgba(14, 165, 233, 0.3); }
    50% { text-shadow: 0 0 30px rgba(14, 165, 233, 0.6); }
}

/* ===== NAVIGATION ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);  /* Fondo blanco con transparencia */
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    z-index: var(--z-sticky);
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.1);  /* Sombra azul sutil */
}

/* Navbar compacta cuando se hace scroll */
.navbar.scrolled {
    padding: 0;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 15px rgba(37, 99, 235, 0.2);
}

.navbar.scrolled .container {
    min-height: 50px;
    padding: var(--spacing-xs) var(--spacing-md);
}

.navbar.scrolled .nav-brand a {
    font-size: var(--font-size-base);
}

.navbar.scrolled .nav-brand i {
    font-size: var(--font-size-lg);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 60px;
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-color);
    text-shadow: 0 1px 2px rgba(30, 58, 138, 0.1);
}

.nav-brand i {
    font-size: var(--font-size-xl);
    color: var(--accent-color);
    text-shadow: 0 0 10px rgba(37, 99, 235, 0.5);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}



.nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    transition: var(--transition);
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link i {
    color: var(--primary-color);
    width: 16px;
    text-align: center;
    transition: var(--transition);
}

.nav-link:hover i {
    color: var(--accent-color);
    transform: scale(1.1);
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--blue-ultra-light);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.1);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 1px;
}

.nav-link:hover::after {
    width: 80%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
    z-index: var(--z-sticky);
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid transparent;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.nav-toggle:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    box-shadow: 0 2px 10px rgba(37, 99, 235, 0.2);
}

.bar {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    transition: var(--transition);
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(37, 99, 235, 0.3);
}

.nav-toggle:hover .bar {
    background: var(--accent-color);
}

/* ===== BOTONES ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    font-weight: 500;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--text-white);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
    border: 1px solid var(--border-accent);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.4);
    color: var(--text-white);
    background: linear-gradient(135deg, var(--accent-color), var(--primary-color));
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: 0 2px 10px rgba(14, 165, 233, 0.1);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--text-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(14, 165, 233, 0.3);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* ===== FOOTER ===== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-accent);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    box-shadow: 0 -4px 20px rgba(14, 165, 233, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h3,
.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
}

.footer-section h3 i,
.footer-section h4 i {
    color: var(--primary-color);
    transition: var(--transition);
}

.footer-section h3:hover i,
.footer-section h4:hover i {
    color: var(--accent-color);
    transform: scale(1.1);
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.footer-section p i {
    color: var(--primary-color);
    width: 16px;
    text-align: center;
    transition: var(--transition);
}

.footer-section p:hover i {
    color: var(--accent-color);
    transform: scale(1.1);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-section ul li a {
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
}

.footer-section ul li a i {
    color: var(--primary-color);
    width: 16px;
    text-align: center;
    transition: var(--transition);
}

.footer-section ul li a:hover i {
    color: var(--accent-color);
    transform: scale(1.1);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--primary-color);
    color: var(--text-white);
    border-radius: 50%;
    transition: var(--transition);
    border: 2px solid transparent;
}

.social-links a i {
    font-size: var(--font-size-lg);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-2px) scale(1.1);
    box-shadow: 0 8px 25px rgba(14, 165, 233, 0.4);
    border-color: var(--accent-color);
}

.social-links a:hover i {
    transform: scale(1.1);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.footer-bottom p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    margin: 0;
}

.footer-bottom p i {
    color: var(--primary-color);
    transition: var(--transition);
}

.footer-bottom p:hover i {
    color: var(--accent-color);
    transform: scale(1.1);
}

/* ===== SCROLL TO TOP BUTTON ===== */
.scroll-top-btn {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--text-white);
    border: 2px solid var(--border-accent);
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: var(--z-dropdown);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.3);
    backdrop-filter: blur(10px);
}

.scroll-top-btn::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-color), var(--accent-color));
    border-radius: 50%;
    z-index: -1;
    opacity: 0.3;
}
}

.scroll-top-btn.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top-btn:hover {
    background: var(--accent-color);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 30px rgba(14, 165, 233, 0.5);
    border-color: var(--accent-color);
}

.scroll-top-btn:hover::before {
    opacity: 0.5;
}

.scroll-top-btn i {
    font-size: var(--font-size-lg);
    transition: var(--transition);
}

.scroll-top-btn:hover i {
    transform: scale(1.1);
}

/* ===== LOADERS Y SPINNERS ===== */
.loader {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

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

.spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s ease-in-out infinite;
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--border-radius);
}

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

/* ===== SISTEMA DE NOTIFICACIONES ===== */
.toast-container {
    position: fixed;
    top: 100px;
    right: var(--spacing-lg);
    z-index: calc(var(--z-modal) + 1);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease;
    max-width: 350px;
    border-left: 4px solid var(--primary-color);
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast.success {
    border-left-color: var(--success-color);
}

.toast.warning {
    border-left-color: var(--warning-color);
}

.toast.error {
    border-left-color: var(--error-color);
}

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

.toast-title {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.toast-close:hover {
    color: var(--error-color);
    background: var(--bg-hover);
}

.toast-message {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

/* ===== ALERTAS ===== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-info {
    background: rgba(14, 165, 233, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning-color);
    color: var(--warning-color);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--error-color);
    color: var(--error-color);
}

.alert i {
    font-size: var(--font-size-lg);
}

/* ===== MODALES ===== */
.modal {
    display: none;
    position: fixed;
    z-index: var(--z-modal);
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--bg-card);
    margin: 5% auto;
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 600px;
    position: relative;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--error-color);
    background: var(--bg-hover);
}

.modal-body {
    margin-bottom: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

/* ===== TOOLTIPS ===== */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltip-text {
    visibility: hidden;
    width: 200px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    text-align: center;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm);
    position: absolute;
    z-index: var(--z-dropdown);
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
}

.tooltip .tooltip-text::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 50%;
    margin-left: -5px;
    border-width: 5px;
    border-style: solid;
    border-color: var(--bg-secondary) transparent transparent transparent;
}

.tooltip:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* ===== BADGES Y ETIQUETAS ===== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: var(--primary-color);
    color: var(--text-white);
}

.badge-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.badge-success {
    background: var(--success-color);
    color: var(--text-white);
}

.badge-warning {
    background: var(--warning-color);
    color: var(--text-white);
}

.badge-error {
    background: var(--error-color);
    color: var(--text-white);
}

/* ===== TABLAS ===== */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.table th,
.table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: var(--font-size-sm);
    letter-spacing: 0.5px;
}

.table td {
    color: var(--text-secondary);
}

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

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ===== FORMULARIOS ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-weight: 500;
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-family-primary);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
    background: var(--bg-card);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== TARJETAS OPTIMIZADAS ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(14, 165, 233, 0.15);
    border-color: var(--border-accent);
}

/* Tarjeta compacta para información densa */
.card.compact {
    padding: var(--spacing-sm);
    border-radius: var(--border-radius);
}

.card.compact:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 15px rgba(14, 165, 233, 0.1);
}

/* Header de tarjeta */
.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.card-header h3,
.card-header h4 {
    margin: 0;
    flex: 1;
}

.card-header i {
    color: var(--primary-color);
    font-size: var(--font-size-lg);
}

/* Contenido de tarjeta */
.card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.card-content p:last-child {
    margin-bottom: 0;
}

/* Footer de tarjeta */
.card-footer {
    margin-top: auto;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ===== NAVEGACIÓN RÁPIDA MINIMALISTA ===== */
.quick-nav {
    position: fixed;
    right: var(--spacing-lg);
    top: 50%;
    transform: translateY(-50%);
    z-index: var(--z-dropdown);
    background: transparent;
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-sm);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}



.quick-nav.visible {
    opacity: 1;
    visibility: visible;
}

.quick-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.quick-nav-item {
    position: relative;
}

.quick-nav-link {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 50%;
    transition: all 0.3s ease;
    position: relative;
    width: 40px;
    height: 40px;
}



.quick-nav-link:hover {
    color: var(--primary-color);
    background: var(--bg-hover);
    transform: translateX(-4px);
}

.quick-nav-link:hover .quick-nav-dot {
    background: var(--accent-color);
    transform: scale(1.3);
    box-shadow: 0 0 10px rgba(14, 165, 233, 0.5);
}

.quick-nav-link.active {
    background: var(--bg-hover);
    transform: scale(1.1);
}

.quick-nav-link.active .quick-nav-dot {
    background: var(--primary-color);
    transform: scale(1.3);
    box-shadow: 0 0 15px rgba(14, 165, 233, 0.7);
    border-color: var(--primary-color);
}

.quick-nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--text-light);
    transition: var(--transition);
    border: 2px solid var(--border-color);
}

.quick-nav-link:hover .quick-nav-dot,
.quick-nav-link.active .quick-nav-dot {
    background: var(--primary-color);
    transform: scale(1.2);
}

.quick-nav-label {
    display: none;
    white-space: nowrap;
}

.quick-nav:hover .quick-nav-label {
    display: block;
}

/* Breadcrumbs mejorados */
.breadcrumbs {
    background: var(--bg-secondary);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
    margin-top: 80px; /* Compensar navbar */
    position: sticky;
    top: 60px;
    z-index: var(--z-sticky);
    backdrop-filter: blur(10px);
}

.breadcrumbs::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-accent), transparent);
}

.breadcrumbs ol {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.breadcrumbs li {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
}

.breadcrumbs li:not(:last-child)::after {
    content: '/';
    color: var(--text-light);
    margin-left: var(--spacing-xs);
}

.breadcrumbs a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumbs a:hover {
    color: var(--primary-color);
}

.breadcrumbs .current {
    color: var(--text-primary);
    font-weight: 500;
}

/* Progress indicator mejorado */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    z-index: calc(var(--z-sticky) + 1);
    transition: width 0.1s ease;
    box-shadow: 0 2px 10px rgba(14, 165, 233, 0.3);
}

.scroll-progress::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 20px;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--accent-color));
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-20px); opacity: 0; }
    50% { opacity: 1; }
    100% { transform: translateX(0); opacity: 0; }
}

/* ===== UTILIDADES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }
.mb-5 { margin-bottom: var(--spacing-2xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }
.mt-5 { margin-top: var(--spacing-2xl); }

/* ===== UTILIDADES UX OPTIMIZADAS ===== */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Indicador de carga mejorado */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: calc(var(--z-modal) + 10);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.loading-overlay.show {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loading-text {
    color: var(--text-primary);
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
    text-align: center;
}

/* Mejoras de accesibilidad */
.focus-visible:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}



.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: var(--text-white);
    padding: 8px;
    text-decoration: none;
    border-radius: var(--border-radius);
    z-index: calc(var(--z-modal) + 1);
    transition: var(--transition);
}

.skip-link:focus {
    top: 6px;
}

.focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.smooth-transition {
    transition: var(--transition);
}

.no-scroll {
    overflow: hidden;
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* ===== RESPONSIVE OPTIMIZADO ===== */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    /* Tipografía más compacta en móvil */
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
    
    .section-header {
        margin-bottom: var(--spacing-lg);
        padding: var(--spacing-sm) 0;
    }
    
    /* Layout compacto para móvil */
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .section:first-of-type {
        padding-top: 70px;
    }
    
    /* Grid responsive más compacto */
    .content-grid.two-columns,
    .content-grid.three-columns,
    .content-grid.four-columns {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    /* Footer compacto en móvil */
    .footer {
        padding: var(--spacing-lg) 0 var(--spacing-sm);
    }
    
    .footer-content {
        gap: var(--spacing-sm);
        margin-bottom: var(--spacing-sm);
    }
    
    /* Quick nav oculto en móvil para no interferir */
    .quick-nav {
        display: none;
    }
    
    /* Section indicator oculto en móvil */
    .section-indicator {
        display: none;
    }
    

    
    /* Breadcrumbs más compactos en móvil */
    .breadcrumbs {
        padding: var(--spacing-xs) 0;
        margin-top: 50px;
    }
    
    .breadcrumbs li {
        font-size: var(--font-size-xs);
    }
    
    /* Cards más compactas en móvil */
    .card {
        padding: var(--spacing-sm);
    }
    
    .card.compact {
        padding: var(--spacing-xs);
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: var(--spacing-xl);
        border-top: 1px solid var(--border-light);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        backdrop-filter: blur(20px);
        box-shadow: 0 8px 32px rgba(37, 99, 235, 0.2);
        z-index: calc(var(--z-sticky) - 1);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
        text-align: center;
    }
    
    .nav-menu .nav-link {
        padding: var(--spacing-lg);
        border-radius: var(--border-radius-lg);
        margin-bottom: var(--spacing-md);
        border: 1px solid transparent;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        gap: var(--spacing-md);
        font-size: var(--font-size-lg);
        font-weight: 500;
        justify-content: center;
    }
    
    .nav-menu .nav-link:hover {
        background: var(--blue-ultra-light);
        border-color: var(--primary-color);
        transform: translateX(10px);
        box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
    }
    
    .nav-menu .nav-link:active {
        transform: translateX(5px) scale(0.98);
        background: rgba(37, 99, 235, 0.2);
    }
    
    .nav-menu .nav-link i {
        color: var(--primary-color);
        width: 24px;
        text-align: center;
        font-size: var(--font-size-lg);
    }
    
    .nav-menu .nav-link span {
        color: var(--text-primary);
        font-weight: 500;
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        animation: slideDown 0.3s ease-out;
        box-shadow: 0 8px 32px rgba(37, 99, 235, 0.3);
    }
    
    @keyframes slideDown {
        from {
            transform: translateY(-100%);
            opacity: 0;
        }
        to {
            transform: translateY(0);
            opacity: 1;
        }
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.nav-toggle.active .bar:nth-child(2) {
    opacity: 0;
    transform: scale(0);
}

.nav-toggle.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.nav-toggle.active {
    background: rgba(37, 99, 235, 0.2);
    border-color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.3);
}
    

    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    /* Menú móvil más compacto */
    .nav-menu {
        padding: var(--spacing-lg);
        top: 50px;
    }
    
    .nav-menu .nav-link {
        padding: var(--spacing-md);
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-sm);
    }
    
    .nav-menu .nav-link i {
        width: 20px;
        font-size: var(--font-size-base);
    }
    
    /* Toggle más pequeño */
    .nav-toggle {
        gap: 3px;
    }
    
    .bar {
        width: 22px;
        height: 2px;
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .scroll-top-btn {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        width: 45px;
        height: 45px;
    }
}