/* ========================================
   TATIN - MEJORAS UX/UI
   Animaciones, transiciones y pulido visual
   ======================================== */

/* ==========================================
   ANIMACIONES GLOBALES
   ========================================== */

/* Fade in suave al cargar página */
body {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Animación de entrada para cards */
.fade-in-up {
    animation: fadeInUp 0.5s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stagger animation para múltiples elementos */
.stagger-item {
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
}

.stagger-item:nth-child(1) { animation-delay: 0.05s; }
.stagger-item:nth-child(2) { animation-delay: 0.1s; }
.stagger-item:nth-child(3) { animation-delay: 0.15s; }
.stagger-item:nth-child(4) { animation-delay: 0.2s; }
.stagger-item:nth-child(5) { animation-delay: 0.25s; }
.stagger-item:nth-child(6) { animation-delay: 0.3s; }
.stagger-item:nth-child(7) { animation-delay: 0.35s; }
.stagger-item:nth-child(8) { animation-delay: 0.4s; }

/* ==========================================
   SKELETON LOADERS
   ========================================== */

.skeleton {
    background: linear-gradient(
        90deg,
        rgba(240, 240, 240, 1) 25%,
        rgba(250, 250, 250, 1) 50%,
        rgba(240, 240, 240, 1) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 12px;
}

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

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-text:last-child {
    width: 60%;
}

.skeleton-title {
    height: 24px;
    width: 80%;
    margin-bottom: 12px;
}

.skeleton-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
}

.skeleton-card {
    padding: 20px;
    border-radius: 15px;
    background: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

/* ==========================================
   LOADING STATES MEJORADOS
   ========================================== */

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(33, 150, 243, 0.1);
    border-top-color: #2196F3;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-dots {
    display: inline-flex;
    gap: 8px;
}

.loading-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #2196F3;
    animation: bounce 1.4s infinite ease-in-out;
}

.loading-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.loading-overlay.active {
    opacity: 1;
    pointer-events: all;
}

/* ==========================================
   TOAST NOTIFICATIONS MEJORADAS
   ========================================== */

.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.toast {
    padding: 16px 20px;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    transform: translateX(450px);
    transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    border-left: 4px solid;
}

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

.toast-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
}

.toast-title {
    font-weight: 700;
    font-size: 0.95rem;
    margin-bottom: 4px;
}

.toast-message {
    font-size: 0.9rem;
    opacity: 0.9;
}

.toast-close {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-close:hover {
    opacity: 1;
}

/* Toast types */
.toast-success {
    background: linear-gradient(135deg, #81C784, #66BB6A);
    color: white;
    border-left-color: #4CAF50;
}

.toast-error {
    background: linear-gradient(135deg, #E57373, #EF5350);
    color: white;
    border-left-color: #F44336;
}

.toast-warning {
    background: linear-gradient(135deg, #FFD54F, #FFCA28);
    color: #5D4037;
    border-left-color: #FFA000;
}

.toast-info {
    background: linear-gradient(135deg, #64B5F6, #42A5F5);
    color: white;
    border-left-color: #2196F3;
}

/* ==========================================
   SCROLL TO TOP BUTTON
   ========================================== */

.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2196F3, #667eea);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(33, 150, 243, 0.4);
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scroll-to-top.visible {
    opacity: 1;
    transform: scale(1);
}

.scroll-to-top:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 25px rgba(33, 150, 243, 0.5);
}

.scroll-to-top:active {
    transform: scale(0.95);
}

/* ==========================================
   MICRO-INTERACCIONES
   ========================================== */

/* Hover lift effect */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

/* Button press effect */
.btn-press {
    transition: transform 0.1s;
}

.btn-press:active {
    transform: scale(0.95);
}

/* Ripple effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
    width: 300px;
    height: 300px;
}

/* Pulse animation */
.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* ==========================================
   EMPTY STATES MEJORADOS
   ========================================== */

.empty-state-enhanced {
    text-align: center;
    padding: 80px 40px;
    animation: fadeInUp 0.5s ease-out;
}

.empty-state-icon-large {
    font-size: 6rem;
    margin-bottom: 25px;
    opacity: 0.3;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.empty-state-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: #2C3E50;
    margin-bottom: 15px;
}

.empty-state-description {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 30px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.empty-state-action {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 30px;
    background: linear-gradient(135deg, #2196F3, #667eea);
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
}

.empty-state-action:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(33, 150, 243, 0.4);
}

/* ==========================================
   SMOOTH SCROLLING
   ========================================== */

html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: rgba(240, 240, 240, 0.5);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #2196F3, #667eea);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #1976D2, #5568d3);
}

/* ==========================================
   FOCUS STATES MEJORADOS
   ========================================== */

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
    outline: 3px solid rgba(33, 150, 243, 0.5);
    outline-offset: 2px;
}

/* ==========================================
   TOOLTIPS
   ========================================== */

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

[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-5px);
    padding: 8px 12px;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    font-size: 0.85rem;
    white-space: nowrap;
    border-radius: 6px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s;
    z-index: 1000;
}

[data-tooltip]:hover::before {
    opacity: 1;
    transform: translateX(-50%) translateY(-10px);
}

/* ==========================================
   BADGE ANIMATIONS
   ========================================== */

.badge-animated {
    display: inline-block;
    animation: badgePop 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

@keyframes badgePop {
    0% {
        transform: scale(0);
    }
    50% {
        transform: scale(1.2);
    }
    100% {
        transform: scale(1);
    }
}

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

@media (max-width: 768px) {
    .toast-container {
        right: 10px;
        left: 10px;
        top: 70px;
    }
    
    .toast {
        min-width: auto;
        width: 100%;
    }
    
    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
    
    .empty-state-icon-large {
        font-size: 4rem;
    }
    
    .empty-state-title {
        font-size: 1.5rem;
    }
}

/* ==========================================
   PERFORMANCE OPTIMIZATIONS
   ========================================== */

/* Hardware acceleration para animaciones */
.accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Reducir motion para usuarios con preferencias de accesibilidad */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ==========================================
   PRINT STYLES
   ========================================== */

@media print {
    .toast-container,
    .scroll-to-top,
    .loading-overlay {
        display: none !important;
    }
}