body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.login-container {
    text-align: center;
    position: relative;
    transform: translateY(-10%);
}

.logo {
    display: block;
    max-width: 200px;
    height: auto;
    margin: 0 auto 30px auto;
    transition: opacity 0.3s ease;
}

.login-box {
    width: 300px;
    padding: 30px;
    border-radius: 8px;
    background-color: #fff;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.1);
}

.login-box input {
    display: block;
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border: none;
    border-bottom: 1px solid #ccc;
    outline: none;
    font-size: 14px;
    background-color: transparent;
    box-sizing: border-box;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.login-box input:focus {
    border-bottom: 2px solid #5c8680;
}

.login-box input::placeholder {
    color: #aaa;
    transition: opacity 0.2s ease;
}

.login-box input:focus::placeholder {
    opacity: 0.5;
}

.login-box button {
    width: 100%;
    padding: 10px;
    background-color: #7e9e9c;
    color: white;
    border: none;
    border-radius: 4px;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
}

.login-box button:hover {
    background-color: #6a8b89;
    box-shadow: 0 2px 8px rgba(106, 139, 137, 0.3);
}

.login-box button:active {
    transform: scale(0.98);
}

.error-msg {
    color: #d9534f;
    background-color: #f2dede;
    border: 1px solid #ebccd1;
    padding: 3px;
    margin-top: 10px;
    border-radius: 4px;
    text-align: center;
    animation: shake 0.4s ease;
}

.error-msg p {
    margin: 0;
}

.logout-msg {
    color: #3c763d;
    background-color: #dff0d8;
    border: 1px solid #d6e9c6;
    padding: 3px;
    margin-top: 10px;
    border-radius: 4px;
    text-align: center;
    animation: fadeIn 0.3s ease;
}

.logout-msg p {
    margin: 0;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}