body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, #0d1b2a, #1b2a42);
    color: #e0e0e0;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 700px;
    margin: 60px auto;
    background: rgba(20, 30, 50, 0.9);
    padding: 30px 40px;
    border-radius: 14px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    position: relative;
}

.logo {
    position: absolute;
    top: -10px;
    right: 20px;
    width: 160px;
    height: 160px;
    object-fit: contain;
}

h1 {
    margin-top: 0;
    font-weight: 600;
}

.file-list {
    list-style: none;
    padding: 0;
}

.file-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255,255,255,0.05);
    margin: 10px 0;
    padding: 12px 16px;
    border-radius: 10px;
}

.filename {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 60%;
}

.btn {
    background: #00aaff;
    color: #001f33;
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 8px;
    font-weight: 600;
    transition: 0.2s ease;
}

.btn:hover {
    background: #0077aa;
}