* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    background: url('../img/login-bg.jpg') no-repeat center center;
    background-size: cover;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    position: relative;
}

body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(3px);
}

.login-container {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    width: 400px;
    position: relative;
    z-index: 1;
    overflow: hidden;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.login-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255,255,255,0.1), rgba(255,255,255,0));
    z-index: -1;
}

.login-title {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 30px;
    font-size: 28px;
    font-weight: 600;
    position: relative;
    letter-spacing: 1px;
}

.login-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, #3498db, #2ecc71);
}

.form-group {
    margin-bottom: 25px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #2c3e50;
    font-size: 14px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 12px 15px;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    color: #2c3e50;
    transition: all 0.3s ease;
    font-family: 'Microsoft YaHei', sans-serif;
}

.form-group input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 10px rgba(52, 152, 219, 0.2);
    background: #fff;
}

.form-group input::placeholder {
    color: #95a5a6;
    font-family: 'Microsoft YaHei', sans-serif;
}

.remember-me {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 14px;
    cursor: pointer;
}

.remember-me input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    margin-right: 10px;
    position: relative;
    cursor: pointer;
    background: #fff;
}

.remember-me input[type="checkbox"]:checked {
    background: #3498db;
    border-color: #3498db;
}

.remember-me input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #fff;
    font-size: 12px;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(45deg, #3498db, #2ecc71);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Microsoft YaHei', sans-serif;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(46, 204, 113, 0.3);
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.login-btn:hover::before {
    left: 100%;
}

.error-message {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: none;
    font-family: 'Microsoft YaHei', sans-serif;
}