/* Modern Loading Animation - Kuzey DC Teması */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 1;
    transition: opacity 0.5s ease-in-out;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #ffffff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

.loading-text {
    font-size: 18px;
    color: #ffffff;
    font-family: 'Arial', sans-serif;
    font-weight: 300;
    margin-top: 10px;
    letter-spacing: 2px;
}

.loading-logo {
    max-width: 180px;
    margin-bottom: 30px;
    filter: brightness(0) invert(1);
}

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

/* Alternatif pulse animasyonu */
.loading-pulse {
    width: 60px;
    height: 60px;
    background: #007bff;
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
    margin: 0 auto 20px;
}

@keyframes pulse {
    0% {
        transform: scale(0);
        opacity: 1;
    }
    100% {
        transform: scale(1);
        opacity: 0;
    }
}

/* Dots loading animation */
.loading-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 20px 0;
}

.loading-dots div {
    width: 12px;
    height: 12px;
    background: #007bff;
    border-radius: 50%;
    margin: 0 5px;
    animation: dots 1.4s ease-in-out infinite both;
}

.loading-dots div:nth-child(1) { animation-delay: -0.32s; }
.loading-dots div:nth-child(2) { animation-delay: -0.16s; }

@keyframes dots {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .loading-spinner {
        width: 50px;
        height: 50px;
    }
    
    .loading-text {
        font-size: 14px;
    }
    
    .loading-logo {
        max-width: 120px;
    }
}