body {
    margin: 0;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
}

h1 {
    text-align: center;
    font-weight: 300;
    margin-bottom: 20px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.loader {
    position: absolute;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid #ffffff;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    z-index: 5;
    display: none;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

.empty-state {
    text-align: center;
    margin-top: 100px;
    color: var(--sub-text-color);
}