body {
    font-family: Arial, sans-serif;
    background: #0f172a;
    color: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    margin: 0;
}

.card {
    background: #1e293b;
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(15,23,42, .4);
    width: 360px;
}

.card h1 {
    margin-top: 0;
    margin-bottom: 24px;
    font-size: 1.5rem;
    text-align: center;
}

.card label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.card input[type="text"],
.card input[type="password"] {
    width: 100%;
    padding: 10px 12px;
    margin-bottom: 16px;
    border: 1px solid #334155;
    border-radius: 8px;
    background: #0f172a;
    color: #f8fafc;
}

.card button {
    width: 100%;
    padding: 12px;
    background: #38bdf8;
    border: none;
    border-radius: 8px;
    color: #0f172a;
    font-weight: 700;
    cursor: pointer;
    font-size: 1rem;
}

.card button:hover {
    background: #0ea5e9;
}

.logout-form {
    margin-top: 16px;
}

.logout-button {
    width: 100%;
    padding: 10px;
    background: transparent;
    border: 1px solid #64748b;
    border-radius: 8px;
    color: #f8fafc;
    font-weight: 600;
    cursor: pointer;
}

.logout-button:hover {
    background: #1f2937;
}

.logout-link {
    display: inline-block;
    margin-top: 16px;
    text-decoration: none;
    color: #38bdf8;
    font-weight: 600;
    text-align: center;
}

.logout-link:hover {
    text-decoration: underline;
}

.card .validation-summary {
    margin-bottom: 16px;
    color: #f87171;
    font-size: 0.9rem;
}

.card .validation {
    display: block;
    margin-top: -12px;
    margin-bottom: 16px;
    color: #f87171;
    font-size: 0.85rem;
}