body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #3498db, #8e44ad);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-box {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    background: white;
    padding: 40px 20px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
    animation: fadeIn 0.5s;
    gap: 32px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-left {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
    max-width: 220px;
}

.login-logo {
    width: 100%;
    max-width: 180px;
    height: auto;
    display: block;
}

.login-right {
    flex: 1;
    min-width: 240px;
}

.system-title {
    text-align: center;
    color: #3498db;
    margin-bottom: 30px;
    font-size: 26px;
    font-weight: 600;
    position: relative;
    padding-bottom: 10px;
}

.system-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: #3498db;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 15px;
    transition: all 0.3s;
}

.form-group input:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
    outline: none;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s;
}

.login-btn:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.other-login {
    margin-top: 25px;
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #eaeaea;
}

.other-login p {
    color: #888;
    margin-bottom: 15px;
    font-size: 14px;
}

.other-login a {
    color: #3498db;
    text-decoration: none;
    margin: 0 10px;
    padding: 8px 12px;
    border-radius: 20px;
    background-color: #f5f9fc;
    transition: all 0.3s;
    display: inline-block;
    font-size: 14px;
}

.other-login a:hover {
    background-color: #e1f0fa;
    color: #2980b9;
}

.error-message {
    color: #e74c3c;
    margin-bottom: 20px;
    text-align: center;
    display: none;
    padding: 10px;
    background-color: #ffeaea;
    border-radius: 4px;
    font-size: 14px;
}

@media (max-width: 600px) {
    .login-box {
        flex-direction: column;
        gap: 12px;
        padding: 20px 8px;
        margin-top: -60px;
    }
    .login-left, .login-right {
        max-width: 100%;
        min-width: 0;
    }
    .login-logo {
        max-width: 120px;
    }
    .system-title {
        font-size: 20px;
        margin-bottom: 10px;
        margin-top: -5px;
        padding-bottom: 6px;
    }
    .system-title span {
        font-size: 14px !important;
    }
    .system-title:after {
        width: 30px;
        height: 2px;
    }
    .login-right {
        padding-top: 0;
    }
}

.login-footer {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
    text-align: center;
    color: #000;
    font-weight: bold;
    font-size: 15px;
    background: transparent;
    line-height: 1.8;
    z-index: 100;
    padding-bottom: 10px;
}