body {
    font-family: Arial, sans-serif;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: #fff;
    text-align: center;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 600px;
    margin: 50px auto;
    background: rgba(0, 0, 0, 0.4);
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

.header { margin-bottom: 20px; }

.form-box input {
    padding: 10px;
    margin: 10px 0;
    width: 80%;
    border: none;
    border-radius: 10px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 10px;
    background: #00c6ff;
    color: white;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.3s ease;
}

button:hover {
    transform: scale(1.05);
    background: #0072ff;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    margin: 10px;
    border-radius: 10px;
    background: #00c6ff;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease-in-out;
}

.btn:hover {
    background: #0072ff;
    transform: translateY(-3px);
}

.logout { background: #ff4b5c; }
.logout:hover { background: #ff2e44; }

.result { margin-top: 20px; font-size: 1.2em; animation: fadeIn 1s ease-in-out; }

/* Flash messages */
.flash-messages { margin: 15px 0; }
.flash { padding: 10px; border-radius: 8px; margin-bottom: 10px; animation: slideDown 0.5s ease forwards; }
.flash.success { background: #28a745; color: white; }
.flash.error { background: #dc3545; color: white; }
.flash.info { background: #17a2b8; color: white; }

/* Animations */
.fade-in { animation: fadeIn 1s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }