/* === MODERN EFFECTS & ANIMATIONS === */

/* --- Modern Typography --- */
/* Google Fonts ahora se cargan via <link> en HTML para mejor performance */

:root {
    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;

    /* Modern Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-base: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

    /* Modern Colors */
    --color-glass: rgba(255, 255, 255, 0.1);
    --color-glass-border: rgba(255, 255, 255, 0.2);

    /* Modern Animations */
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out: cubic-bezier(0, 0, 0.2, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --- Modern Typography Updates --- */
body {
    font-family: var(--font-primary);
    font-feature-settings: "liga" 1, "kern" 1;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

/* --- Glass Morphism Effects --- */
.glass {
    background: var(--color-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--color-glass-border);
    border-radius: 16px;
    will-change: backdrop-filter;
}

.glass-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    will-change: backdrop-filter;
}

/* --- Modern Buttons --- */
.btn-modern {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xs);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 0.875rem;
    line-height: 1;
    text-decoration: none;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out);
    transform-origin: center;
    overflow: hidden;
}

.btn-modern::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2), rgba(255,255,255,0.05));
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out);
}

.btn-modern:hover::before {
    opacity: 1;
}

.btn-modern:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-modern:active {
    transform: translateY(0);
    box-shadow: var(--shadow-base);
}

.btn-primary {
    background: var(--gradiente-primario);
    color: var(--color-blanco-puro);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--gradiente-secundario);
    color: var(--color-blanco-puro);
    box-shadow: var(--shadow-md);
}

.btn-ghost {
    background: transparent;
    color: var(--color-primario);
    border: 2px solid var(--color-primario);
}

.btn-ghost:hover {
    background: var(--color-primario);
    color: var(--color-blanco-puro);
}

/* --- Modern Cards --- */
.card-modern {
    background: var(--color-tarjeta-fondo);
    border-radius: 20px;
    padding: var(--space-xl);
    box-shadow: var(--shadow-base);
    border: 1px solid var(--color-borde);
    transition: transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out);
    position: relative;
    overflow: hidden;
}

.card-modern::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradiente-primario);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-slow) var(--ease-spring);
}

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

.card-modern:hover::before {
    transform: scaleX(1);
}

/* --- Loading States --- */
.skeleton {
    background: linear-gradient(90deg,
        var(--color-gris-claro) 25%,
        rgba(255,255,255,0.5) 50%,
        var(--color-gris-claro) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 8px;
    will-change: background-position;
}

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

/* --- Progress Indicators --- */
.progress-bar {
    position: relative;
    height: 8px;
    background: var(--color-gris-claro);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradiente-primario);
    border-radius: 4px;
    transition: width var(--duration-slow) var(--ease-out);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg,
        transparent,
        rgba(255,255,255,0.4),
        transparent);
    animation: progress-shine 2s infinite;
    will-change: transform;
}

@keyframes progress-shine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* --- Modern Inputs --- */
.input-modern {
    position: relative;
    margin-bottom: var(--space-md);
}

.input-modern input,
.input-modern select,
.input-modern textarea {
    width: 100%;
    padding: var(--space-md) var(--space-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    border: 2px solid var(--color-borde);
    border-radius: 12px;
    background: var(--color-tarjeta-fondo);
    color: var(--color-texto);
    transition: border-color var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out);
}

.input-modern input:focus,
.input-modern select:focus,
.input-modern textarea:focus {
    outline: none;
    border-color: var(--color-primario);
    box-shadow: 0 0 0 4px rgba(21, 101, 192, 0.1);
    transform: scale(1.02);
}

.input-modern label {
    position: absolute;
    top: 50%;
    left: var(--space-sm);
    transform: translateY(-50%);
    font-size: 1rem;
    color: var(--color-texto);
    pointer-events: none;
    transition: all var(--duration-normal) var(--ease-out);
    background: var(--color-tarjeta-fondo);
    padding: 0 var(--space-2xs);
}

.input-modern input:focus + label,
.input-modern input:not(:placeholder-shown) + label,
.input-modern select:focus + label,
.input-modern textarea:focus + label {
    top: 0;
    font-size: 0.75rem;
    color: var(--color-primario);
    font-weight: 600;
}

/* --- Stats Counters --- */
.stat-counter {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-primario);
    line-height: 1;
    margin-bottom: var(--space-2xs);
    background: var(--gradiente-primario);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Micro Interactions --- */
.hover-lift {
    transition: transform var(--duration-normal) var(--ease-out);
}

.hover-lift:hover {
    transform: translateY(-4px);
}

.hover-scale {
    transition: transform var(--duration-normal) var(--ease-out);
}

.hover-scale:hover {
    transform: scale(1.05);
}

.hover-glow {
    transition: box-shadow var(--duration-normal) var(--ease-out);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(21, 101, 192, 0.3);
}

/* --- Badge System --- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3xs);
    padding: var(--space-3xs) var(--space-xs);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-primary {
    background: rgba(21, 101, 192, 0.1);
    color: var(--color-primario);
    border: 1px solid rgba(21, 101, 192, 0.2);
}

/* --- Floating Elements --- */
.float-element {
    animation: float 6s ease-in-out infinite;
    will-change: transform;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.float-element-slow {
    animation: float-slow 8s ease-in-out infinite;
    will-change: transform;
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    25% { transform: translateY(-5px) rotate(1deg); }
    75% { transform: translateY(5px) rotate(-1deg); }
}

/* --- Pulse Effects --- */
.pulse-ring {
    position: relative;
}

.pulse-ring::before {
    content: '';
    position: absolute;
    inset: -4px;
    border: 2px solid var(--color-primario);
    border-radius: inherit;
    opacity: 0;
    animation: pulse-ring 2s infinite;
    will-change: transform, opacity;
}

@keyframes pulse-ring {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    100% {
        transform: scale(1.3);
        opacity: 0;
    }
}

/* --- Text Animations --- */
.text-gradient {
    background: var(--gradiente-primario);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-shimmer {
    background: linear-gradient(110deg, 
        var(--color-texto) 40%, 
        var(--color-primario) 50%, 
        var(--color-texto) 60%);
    background-size: 200% 100%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s infinite;
}

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

/* --- Modern Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-gris-claro);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primario);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-secundario);
}

/* --- Responsive Utilities --- */
@media (max-width: 768px) {
    .card-modern {
        padding: var(--space-lg);
        border-radius: 16px;
    }
    
    .btn-modern {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.8rem;
    }
    
    .stat-counter {
        font-size: 2rem;
    }
}

/* --- Performance Optimizations --- */
.gpu-accelerated {
    transform: translateZ(0);
    will-change: transform;
}

.smooth-scroll {
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* --- Accesibilidad --- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

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

    .float-element,
    .float-element-slow {
        animation: none;
    }
}

/* --- Mejoras de contraste para accesibilidad --- */
@media (prefers-contrast: high) {
    :root {
        --color-borde: #000000;
        --sombra-tarjeta: 0 2px 8px rgba(0,0,0,0.8);
    }

    body.dark-mode {
        --color-borde: #ffffff;
        --color-texto: #ffffff;
        --sombra-tarjeta: 0 2px 8px rgba(255,255,255,0.3);
    }
}

/* --- Focus mejorado para navegación por teclado --- */
.btn-modern:focus-visible,
.card-modern:focus-visible {
    outline: 3px solid var(--color-primario);
    outline-offset: 2px;
    border-radius: 8px;
}

/* --- Optimización de fonts --- */
@font-face {
    font-display: swap;
}

/* --- Prefetching de recursos críticos --- */
.critical-resource {
    font-display: swap;
    loading: eager;
}

/* --- Dark Mode Enhancements --- */
body.dark-mode .glass {
    background: rgba(42, 42, 42, 0.3);
    border-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .card-modern {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

body.dark-mode .input-modern input:focus,
body.dark-mode .input-modern select:focus,
body.dark-mode .input-modern textarea:focus {
    box-shadow: 0 0 0 4px rgba(66, 165, 245, 0.2);
}

/* --- Skeleton loading mejorado para modo oscuro --- */
body.dark-mode .skeleton {
    background: linear-gradient(90deg,
        var(--color-gris-claro) 25%,
        rgba(66, 165, 245, 0.2) 50%,
        var(--color-gris-claro) 75%);
    background-size: 200% 100%;
}