/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", sans-serif;
}

body {
    background: linear-gradient(120deg, #2c3e50, #4a6990);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* 登录容器 */
.login-container {
    width: 100%;
    max-width: 420px;
    padding: 0 20px;
}

.login-box {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.2);
    padding: 40px 30px;
}

/* 标题样式 */
.login-title {
    text-align: center;
    margin-bottom: 30px;
}

.login-title h2 {
    color: #2c3e50;
    font-size: 24px;
    margin-bottom: 8px;
}

.login-title p {
    color: #7f8c8d;
    font-size: 14px;
}

/* 表单样式 */
.login-form {
    width: 100%;
}

.form-item {
    position: relative;
    margin-bottom: 25px;
    border-bottom: 2px solid #eee;
}

.form-item label {
    position: absolute;
    left: 0;
    top: 10px;
    color: #95a5a6;
    font-size: 16px;
}

.form-item input {
    width: 100%;
    height: 40px;
    border: none;
    outline: none;
    padding-left: 30px;
    font-size: 14px;
    color: #2c3e50;
    background: transparent;
}

.form-item input::placeholder {
    color: #bdc3c7;
}

/* 提示文字 */
.form-tips {
    height: 20px;
    line-height: 20px;
    margin-bottom: 15px;
    font-size: 12px;
    color: #e74c3c;
    text-align: center;
}

/* 登录按钮 */
.login-btn {
    width: 100%;
    height: 45px;
    border: none;
    outline: none;
    background: linear-gradient(90deg, #3498db, #2980b9);
    color: #fff;
    font-size: 16px;
    font-weight: 500;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background: linear-gradient(90deg, #2980b9, #3498db);
    box-shadow: 0 3px 10px rgba(52, 152, 219, 0.3);
}

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

/* 底部说明 */
.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer p {
    color: #95a5a6;
    font-size: 12px;
}