/* Premium Loading Screen - Cinematic Experience */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--color-bg-dark) 0%, #0f0f0f 100%);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 1;
    visibility: visible;
    transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1), 
                visibility 1s cubic-bezier(0.4, 0, 0.2, 1),
                transform 1s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.loading-screen::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, 
        rgba(32, 85, 135, 0.1) 0%, 
        transparent 70%);
    animation: loadingRotate 20s linear infinite;
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: scale(1.1);
}

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

.loading-content {
    text-align: center;
    color: var(--color-text-inverse);
    position: relative;
    z-index: 1;
}

.loading-logo {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 3rem;
    letter-spacing: -0.05em;
    opacity: 0;
    transform: translateY(30px);
    background: linear-gradient(135deg, 
        rgba(255, 255, 255, 1) 0%, 
        rgba(255, 255, 255, 0.8) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.loading-logo::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 2px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--color-accent) 50%, 
        transparent 100%);
    opacity: 0.6;
}

.loading-progress {
    width: 280px;
    height: 3px;
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
    position: relative;
    backdrop-filter: blur(10px);
}

.loading-progress::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent 0%, 
        rgba(255, 255, 255, 0.2) 50%, 
        transparent 100%);
    animation: loadingShimmer 2s ease-in-out infinite;
}

@keyframes loadingShimmer {
    0%, 100% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(100%);
    }
}

.loading-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, 
        var(--color-accent) 0%, 
        rgba(32, 85, 135, 0.9) 50%,
        var(--color-accent) 100%);
    border-radius: 3px;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 0 0 20px rgba(32, 85, 135, 0.5);
}

.loading-text {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    margin-top: 2rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0;
    font-family: var(--font-mono);
}