/* ===============================
   LOADER REMASTERIZADO - NORTTEK
   =============================== */

#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex; /* Visible por defecto para evitar FOUC */

    /* Imagen de fondo con degradado moderno */
    background-image: 
        linear-gradient(135deg, rgba(0,0,0,0.8) 0%, rgba(0,40,70,0.6) 50%, rgba(0,0,0,0.8) 100%),
        url('../img/loader.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;

    /* Flexbox para centrar contenido */
    justify-content: center;
    align-items: center;
    
    /* Mostrar inmediatamente */
    opacity: 1;
}

/* Ocultar contenido principal hasta que termine el loader */
body {
    overflow: hidden; /* Evitar scroll durante la carga */
}

body.loaded {
    overflow: auto; /* Restaurar scroll después de cargar */
}

#main-content {
    display: none; /* Oculto por defecto hasta que termine el loader */
}

/* Animaciones del loader */
@keyframes loaderFadeIn {
    to {
        opacity: 1;
    }
}

/* Contenedor principal del loader */
.loader-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    z-index: 2;
}

/* ==============================
   LOGO CON EFECTOS MODERNOS
   ============================== */

.logo-container {
    position: relative;
    margin-bottom: 40px;
    animation: logoEntrance 1s ease-out 0.2s both;
}

.company-logo {
    width: 180px;
    height: auto;
    filter: drop-shadow(0 10px 30px rgba(0,188,212,0.3));
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(0,188,212,0.2) 0%, transparent 70%);
    border-radius: 50%;
    animation: logoGlow 2s ease-in-out infinite alternate;
}

@keyframes logoEntrance {
    0% {
        opacity: 0;
        transform: translateY(-30px) scale(0.8);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes logoGlow {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.3;
    }
    100% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0.1;
    }
}

/* ==============================
   SPINNER MODERNO MULTI-LAYER
   ============================== */

.modern-spinner {
    position: relative;
    width: 100px;
    height: 100px;
    margin-bottom: 50px;
    animation: spinnerEntrance 0.8s ease-out 0.5s both;
}

.spinner-ring {
    position: absolute;
    border-radius: 50%;
    border: 3px solid transparent;
}

.spinner-ring.primary {
    width: 100px;
    height: 100px;
    top: 0;
    left: 0;
    border-top: 3px solid #00bcd4;
    border-right: 3px solid #00bcd4;
    animation: spinPrimary 2s linear infinite;
}

.spinner-ring.secondary {
    width: 70px;
    height: 70px;
    top: 15px;
    left: 15px;
    border-top: 2px solid #4fc3f7;
    border-left: 2px solid #4fc3f7;
    animation: spinSecondary 1.5s linear infinite reverse;
}

.spinner-dots {
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.dot {
    width: 8px;
    height: 8px;
    background: linear-gradient(45deg, #00bcd4, #4fc3f7);
    border-radius: 50%;
    position: absolute;
    animation: dotPulse 1.5s ease-in-out infinite;
}

.dot:nth-child(1) {
    animation-delay: 0s;
    transform: translateY(-35px);
}

.dot:nth-child(2) {
    animation-delay: 0.3s;
    transform: rotate(120deg) translateY(-35px);
}

.dot:nth-child(3) {
    animation-delay: 0.6s;
    transform: rotate(240deg) translateY(-35px);
}

@keyframes spinnerEntrance {
    0% {
        opacity: 0;
        transform: scale(0.5) rotate(-180deg);
    }
    100% {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
}

@keyframes spinPrimary {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

@keyframes dotPulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* ==============================
   BARRA DE PROGRESO MODERNIZADA
   ============================== */

.progress-container {
    width: 320px;
    animation: progressEntrance 0.8s ease-out 0.8s both;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(255,255,255,0.1);
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    margin-bottom: 20px;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255,255,255,0.1);
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, #00bcd4 0%, #4fc3f7 50%, #81d4fa 100%);
    border-radius: 10px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-shine {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.4) 50%, transparent 100%);
    animation: shine 2s ease-in-out infinite;
}

.progress-text {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
}

.percentage {
    font-size: 18px;
    font-weight: 700;
    color: #00bcd4;
    text-shadow: 0 2px 10px rgba(0,188,212,0.5);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.loading-text {
    font-size: 14px;
    font-weight: 400;
    color: rgba(255,255,255,0.8);
    animation: textPulse 2s ease-in-out infinite;
}

@keyframes progressEntrance {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shine {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

@keyframes textPulse {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

/* ==============================
   PARTÍCULAS FLOTANTES DECORATIVAS
   ============================== */

.floating-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 1;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(79,195,247,0.6);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.particle:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
    animation-duration: 6s;
}

.particle:nth-child(2) {
    top: 60%;
    left: 80%;
    animation-delay: 1s;
    animation-duration: 8s;
}

.particle:nth-child(3) {
    top: 80%;
    left: 20%;
    animation-delay: 2s;
    animation-duration: 7s;
}

.particle:nth-child(4) {
    top: 30%;
    left: 90%;
    animation-delay: 3s;
    animation-duration: 5s;
}

.particle:nth-child(5) {
    top: 70%;
    left: 5%;
    animation-delay: 4s;
    animation-duration: 6s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-20px) scale(1.2);
        opacity: 0.8;
    }
}

/* ==============================
   RESPONSIVIDAD
   ============================== */

@media (max-width: 480px) {
    .company-logo {
        width: 140px;
    }
    
    .modern-spinner {
        width: 80px;
        height: 80px;
    }
    
    .spinner-ring.primary {
        width: 80px;
        height: 80px;
    }
    
    .spinner-ring.secondary {
        width: 56px;
        height: 56px;
        top: 12px;
        left: 12px;
    }
    
    .progress-container {
        width: 280px;
    }
    
    .percentage {
        font-size: 16px;
    }
    
    .loading-text {
        font-size: 12px;
    }
}