/* ===== ESTILOS PARA PÁGINA DE CARGA ===== */

/* Variables específicas para loading */
:root {
    --loading-primary: #2c3e50;
    --loading-secondary: #3498db;
    --loading-accent: #e74c3c;
    --loading-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --loading-gradient-alt: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --loading-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    --loading-transition: all 0.6s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Reset para página de carga */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--loading-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

/* Fondo animado */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 119, 198, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(120, 219, 255, 0.4) 0%, transparent 50%);
    animation: backgroundPulse 8s ease-in-out infinite;
    z-index: -1;
}

@keyframes backgroundPulse {
    0%, 100% { 
        opacity: 0.8;
        transform: scale(1);
    }
    50% { 
        opacity: 1;
        transform: scale(1.1);
    }
}

/* Partículas flotantes */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(2px 2px at 40px 70px, rgba(255, 255, 255, 0.2), transparent),
        radial-gradient(1px 1px at 90px 40px, rgba(255, 255, 255, 0.4), transparent),
        radial-gradient(1px 1px at 130px 80px, rgba(255, 255, 255, 0.3), transparent),
        radial-gradient(2px 2px at 160px 30px, rgba(255, 255, 255, 0.2), transparent);
    background-repeat: repeat;
    background-size: 200px 100px;
    animation: particleFloat 20s linear infinite;
    z-index: -1;
}

@keyframes particleFloat {
    0% { transform: translateY(0) rotate(0deg); }
    100% { transform: translateY(-100px) rotate(360deg); }
}

/* Contenedor principal de carga */
.loading-container {
    text-align: center;
    color: white;
    max-width: 500px;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: var(--loading-shadow);
    animation: containerSlideIn 1s ease-out;
    position: relative;
    overflow: hidden;
}

@keyframes containerSlideIn {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Efecto de brillo en el contenedor */
.loading-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: shineEffect 3s infinite;
}

@keyframes shineEffect {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: 100%; }
}

/* Spinner principal */
.spinner {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    position: relative;
    animation: spinnerRotate 2s linear infinite;
}

.spinner::before,
.spinner::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 4px solid transparent;
    border-top: 4px solid white;
    animation: spinnerPulse 1.5s ease-in-out infinite;
}

.spinner::before {
    width: 80px;
    height: 80px;
    border-top-color: white;
    animation-delay: 0s;
}

.spinner::after {
    width: 60px;
    height: 60px;
    top: 10px;
    left: 10px;
    border-top-color: rgba(255, 255, 255, 0.6);
    animation-delay: 0.2s;
}

@keyframes spinnerRotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes spinnerPulse {
    0%, 100% { 
        opacity: 1;
        transform: scale(1);
    }
    50% { 
        opacity: 0.6;
        transform: scale(0.95);
    }
}

/* Nombre de la empresa */
.company-name {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 4px;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #fff, #f0f0f0, #fff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    animation: nameGlow 3s ease-in-out infinite;
    position: relative;
}

@keyframes nameGlow {
    0%, 100% { 
        filter: brightness(1);
        transform: scale(1);
    }
    50% { 
        filter: brightness(1.2);
        transform: scale(1.02);
    }
}

/* Subtítulo de la empresa */
.company-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
    animation: subtitleFloat 2s ease-in-out infinite;
}

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

/* Título principal */
.loading-container h1 {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.95);
    animation: titleSlideIn 1s ease-out 0.5s both;
}

@keyframes titleSlideIn {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Texto descriptivo */
.loading-container p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    animation: textFadeIn 1s ease-out 1s both;
}

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

/* Puntos de carga animados */
.loading-dots {
    display: inline-block;
    margin-left: 0.5rem;
}

.loading-dots::after {
    content: '...';
    animation: dotsBlink 1.5s infinite;
}

@keyframes dotsBlink {
    0%, 20% { content: ''; }
    40% { content: '.'; }
    60% { content: '..'; }
    80%, 100% { content: '...'; }
}

/* Barra de progreso opcional */
.progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    margin: 1.5rem 0;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, white, rgba(255, 255, 255, 0.7));
    border-radius: 2px;
    animation: progressFill 3s ease-in-out infinite;
}

@keyframes progressFill {
    0% { width: 0%; }
    50% { width: 70%; }
    100% { width: 100%; }
}

/* Responsive Design para Loading */
@media (max-width: 768px) {
    .loading-container {
        max-width: 90%;
        padding: 1.5rem;
        border-radius: 20px;
    }
    
    .spinner {
        width: 60px;
        height: 60px;
    }
    
    .spinner::before {
        width: 60px;
        height: 60px;
    }
    
    .spinner::after {
        width: 40px;
        height: 40px;
        top: 10px;
        left: 10px;
    }
    
    .company-name {
        font-size: 2.2rem;
        letter-spacing: 2px;
    }
    
    .company-subtitle {
        font-size: 1rem;
        letter-spacing: 1px;
    }
    
    .loading-container h1 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .loading-container {
        padding: 1rem;
        border-radius: 16px;
    }
    
    .spinner {
        width: 50px;
        height: 50px;
        margin-bottom: 1.5rem;
    }
    
    .spinner::before {
        width: 50px;
        height: 50px;
    }
    
    .spinner::after {
        width: 30px;
        height: 30px;
        top: 10px;
        left: 10px;
    }
    
    .company-name {
        font-size: 1.8rem;
        letter-spacing: 1px;
    }
    
    .company-subtitle {
        font-size: 0.9rem;
    }
    
    .loading-container h1 {
        font-size: 1.3rem;
    }
    
    .loading-container p {
        font-size: 0.9rem;
    }
}

/* Efectos adicionales */
.loading-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
}

/* Animación de pulso para el contenedor */
@keyframes containerPulse {
    0%, 100% { 
        box-shadow: var(--loading-shadow);
    }
    50% { 
        box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    }
}

.loading-container {
    animation: 
        containerSlideIn 1s ease-out,
        containerPulse 4s ease-in-out infinite;
}

/* Efectos de partículas adicionales */
.floating-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: particleFloat 15s linear infinite;
}

.particle:nth-child(1) { left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { left: 20%; animation-delay: 2s; }
.particle:nth-child(3) { left: 30%; animation-delay: 4s; }
.particle:nth-child(4) { left: 40%; animation-delay: 6s; }
.particle:nth-child(5) { left: 50%; animation-delay: 8s; }
.particle:nth-child(6) { left: 60%; animation-delay: 10s; }
.particle:nth-child(7) { left: 70%; animation-delay: 12s; }
.particle:nth-child(8) { left: 80%; animation-delay: 14s; }
.particle:nth-child(9) { left: 90%; animation-delay: 16s; }

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
        opacity: 0;
    }
}