body {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(-45deg, #674eff, #2e0d78, #674eff, #2e0d78);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.login-box, .upload-box {
    background: #ffffff;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    text-align: center;
    width: 90%;
    max-width: 600px;
}

input[type="text"], input[type="file"] {
    padding: 10px;
    margin: 10px 0;
    width: 90%;
    border-radius: 10px;
    border: 1px solid #ccc;
}

button, .copy-btn, .download-btn {
    padding: 10px 15px;
    background: #674eff;
    border: none;
    color: white;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    margin: 5px 2px;
    text-decoration: none;
}

button:hover, .copy-btn:hover, .download-btn:hover {
    background: #2e0d78;
}

table {
    margin-top: 20px;
    width: 100%;
    border-collapse: collapse;
}

th, td {
    border: 1px solid #ccc;
    padding: 8px;
    text-align: center;
}

.delete-btn {
    color: red;
    text-decoration: none;
    margin-right: 5px;
}

.logout {
    display: inline-block;
    margin-top: 20px;
    text-decoration: none;
    background: #ff4d88;
    color: white;
    padding: 10px 20px;
    border-radius: 10px;
}

.logout:hover {
    background: #ff1a66;
}

.error {
    color: red;
}

.credit {
    margin-top: 15px;
    font-size: 12px;
    color: red;
    animation: blink 1s infinite;
}

@keyframes blink {
    0% { opacity: 1; }
    50% { opacity: 0.3; }
    100% { opacity: 1; }
}