/* Bimed Cryo Platform - Premium Page Loader & Transitions */

/* Page Transition Overlay */
.cryo-loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 25, 41, 0.7); /* Deep dark theme translucent background */
    backdrop-filter: blur(15px) saturate(180%);
    -webkit-backdrop-filter: blur(15px) saturate(180%);
    z-index: 99999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.6s cubic-bezier(0.25, 1, 0.5, 1), 
                visibility 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

.cryo-loader-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Frosty Spinner Container */
.loader-container {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

/* Circular cryogenic freezing glow */
.loader-glow {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.2) 0%, rgba(9, 9, 121, 0) 70%);
    position: absolute;
    top: -20px;
    left: -20px;
    animation: pulseGlow 2s infinite ease-in-out;
}

/* Nitrogen ice crystal spinner */
.loader-spinner {
    width: 80px;
    height: 80px;
    border: 3px solid rgba(0, 212, 255, 0.1);
    border-top: 3px solid #00d4ff;
    border-right: 3px solid rgba(0, 212, 255, 0.8);
    border-radius: 50%;
    animation: spinCryo 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    position: relative;
    box-shadow: 0 0 15px rgba(0, 212, 255, 0.3);
}

/* Inner cryogenic vapor circle */
.loader-spinner::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    bottom: 6px;
    border: 2px solid rgba(255, 255, 255, 0.05);
    border-top: 2px solid #ffffff;
    border-radius: 50%;
    animation: spinCryoReverse 2s linear infinite;
}

/* Steam/Vapor effect particles */
.vapor-particle {
    position: absolute;
    width: 6px;
    height: 6px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    filter: blur(1px);
    pointer-events: none;
    animation: riseVapor 2s infinite ease-out;
    opacity: 0;
}

.vp1 { left: 20%; animation-delay: 0.2s; }
.vp2 { left: 45%; animation-delay: 0.6s; }
.vp3 { left: 70%; animation-delay: 1.1s; }
.vp4 { left: 35%; animation-delay: 1.5s; }

/* Loader Typography */
.loader-text {
    margin-top: 25px;
    font-family: 'Outfit', 'Inter', sans-serif;
    color: #ffffff;
    font-size: 16px;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
    animation: textFlicker 3s infinite alternate;
}

.loader-brand {
    font-size: 11px;
    color: rgba(255, 255, 255, 0.4);
    letter-spacing: 4px;
    margin-top: 8px;
    text-transform: uppercase;
}

/* Animations */
@keyframes spinCryo {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

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

@keyframes pulseGlow {
    0%, 100% { transform: scale(0.9); opacity: 0.5; }
    50% { transform: scale(1.2); opacity: 1; }
}

@keyframes riseVapor {
    0% {
        transform: translateY(20px) scale(1);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.2;
    }
    100% {
        transform: translateY(-50px) scale(3);
        opacity: 0;
        filter: blur(4px);
    }
}

@keyframes textFlicker {
    0%, 100% { opacity: 0.8; }
    50% { opacity: 1; text-shadow: 0 0 15px rgba(0, 212, 255, 0.8), 0 0 2px rgba(255, 255, 255, 0.5); }
}