/**
 * Medical Preloader Styles
 */

/* Fixed overlay covering entire screen */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: #1a3d63 !important;
    z-index: 999999;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.preloader.preloader-hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

/* Noise overlay */
.preloader-noise {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.3;
    mix-blend-mode: overlay;
}

.preloader-noise img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Preloader content container */
.preloader__content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

/* Pulse animation container */
.preloader__pulse {
    position: relative;
    width: 500px;
    height: 60px;
    overflow: hidden;
    margin-bottom: 40px;
}

/* Pulse runner image with gradient mask */
.preloader__pulse__runner {
    width: 100%;
    height: 100%;
    animation: heartbeat 1s linear infinite forwards;
    will-change: transform;
    -webkit-mask-image: linear-gradient(90deg, 
        transparent 0%,
        rgba(255,255,255,0.5) 10%,
        rgba(255,255,255,1) 25%,
        rgba(255,255,255,1) 75%,
        rgba(255,255,255,0.5) 90%,
        transparent 100%
    );
    mask-image: linear-gradient(90deg, 
        transparent 0%,
        rgba(255,255,255,0.5) 10%,
        rgba(255,255,255,1) 25%,
        rgba(255,255,255,1) 75%,
        rgba(255,255,255,0.5) 90%,
        transparent 100%
    );
    -webkit-mask-size: 100% 100%;
    mask-size: 100% 100%;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
}

/* Heartbeat Animation */
@keyframes heartbeat {
    0% {
        transform: translateX(0%);
    }
    100% {
        transform: translateX(-12.25%);
    }
}

/* Text styling */
.preloader__title {
    text-align: center;
    color: #fff;
}

.heading--preloader {
    font-size: 24px;
    font-weight: 300;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    margin: 0;
    line-height: 1.3;
}

.preloader__title__h {
    font-weight: 700;
    color: #fff;
}

/* Responsive styles */
@media (max-width: 1024px) {
    .preloader__pulse {
        width: 400px;
        height: 48px;
        margin-bottom: 35px;
    }
    
    .heading--preloader {
        font-size: 22px;
    }
}

@media (max-width: 767px) {
    .preloader__pulse {
        width: 300px;
        height: 36px;
        margin-bottom: 30px;
    }
    
    .heading--preloader {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .preloader__pulse {
        width: 250px;
        height: 30px;
        margin-bottom: 25px;
    }
    
    .heading--preloader {
        font-size: 16px;
        letter-spacing: 0.03em;
    }
}

/* Remove old preloader styles */
.medical-preloader-overlay,
.medical-preloader-content,
.medical-ecg-animation,
.medical-preloader-text,
.medical-preloader-progress,
.medical-connection-status {
    display: none !important;
}