body {
    background: linear-gradient(135deg, #00BCE4 60%, #3A8FE8 40%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Segoe UI', Arial, sans-serif;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: white;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}   

    .login-header h1 {
        color: #88CFE0;
        font-size: 28px;
        margin: 0 0 10px 0;
    }

    .login-header p {
        color: #666;
        margin: 0;
    }

    .logo {
        max-width: 150px;
        height: auto;
        border-radius: 6px;
    }

.alert {
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-danger {
    background-color: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.form-group {
    margin-bottom: 18px;
}

    .form-group label {
        display: block;
        color: #949699;
        font-weight: 500;
        margin-bottom: 8px;
    }

.form-control {
    width: 91%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s;
}

    .form-control:focus {
        outline: none;
        border-color: #88CFE0;
    }

.btn-login {
    width: 100%;
    padding: 14px;
    background-color: #88CFE0;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s;
}

    .btn-login:hover {
        background-color: #3A8FE8;
    }

.login-footer {
    text-align: center;
    margin-top: 20px;
    color: #888;
    font-size: 13px;
}