/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 头部样式 */
#headerout {
    background-color: #0d233a;
    padding: 0;
    margin: 0;
}

#header {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
}

#logo img {
    height: 22px;
    width: auto;
}

#login a {
    color: white;
    text-decoration: none;
    font-size: 14px;
}

#login a:hover {
    text-decoration: underline;
}

/* 主要内容区域 */
#contentout {
    background-color: white;
    min-height: 500px;
}

#content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 面包屑导航 */
#breadcrumbs {
    font-size: 13px;
    margin-bottom: 15px;
    color: #666;
}

#breadcrumbs a {
    color: #0066cc;
    text-decoration: none;
}

#breadcrumbs a:hover {
    text-decoration: underline;
}

/* 打印按钮 */
#printit {
    float: right;
    margin-bottom: 10px;
}

#printit a {
    color: #0066cc;
    text-decoration: none;
    font-size: 13px;
}

/* 标题样式 */
h1 {
    font-size: 28px;
    color: #0d233a;
    margin-bottom: 20px;
    font-weight: bold;
}

h2 {
    font-size: 20px;
    color: #0d233a;
    margin-bottom: 15px;
}

.h2result {
    background-color: #f0f8ff;
    padding: 10px;
    border-left: 4px solid #2b7ddb;
    margin-bottom: 20px;
}

/* 指示图片 */
#insmdc {
    text-align: center;
    margin-bottom: 20px;
}

#insmdc img {
    max-width: 100%;
    height: auto;
}

/* 布局容器 */
.clefthalf {
    width: 48%;
    float: left;
    margin-right: 2%;
}

.crighthalf {
    width: 48%;
    float: right;
    margin-left: 2%;
}

/* 面板样式 */
.panel {
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 5px;
    padding: 20px;
    margin-bottom: 20px;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
}

table td {
    padding: 8px;
    vertical-align: middle;
}

table td[align="right"] {
    text-align: right;
}

table td[align="center"] {
    text-align: center;
}

/* 输入框样式 */
input[type="text"], select {
    border: 1px solid #ccc;
    border-radius: 3px;
    padding: 6px 8px;
    font-size: 14px;
    background-color: white;
}

.inhalf {
    width: 80px;
}

.innormal {
    width: 100px;
}

.in4char {
    width: 60px;
}

.indollar {
    text-align: right;
}

.inpct {
    text-align: right;
}

/* 按钮样式 */
input[type="submit"], input[type="button"] {
    background-color: #2b7ddb;
    color: white;
    border: none;
    border-radius: 5px;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    margin: 5px;
}

input[type="submit"]:hover, input[type="button"]:hover {
    background-color: #1a5bb8;
}

/* 复选框样式 */
.cbcontainer {
    display: block;
    position: relative;
    padding-left: 25px;
    margin-bottom: 12px;
    cursor: pointer;
    font-size: 14px;
}

.cbcontainer input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.cbmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: #eee;
    border: 1px solid #ccc;
    border-radius: 3px;
}

.cbcontainer:hover input ~ .cbmark {
    background-color: #ccc;
}

.cbcontainer input:checked ~ .cbmark {
    background-color: #2b7ddb;
}

.cbmark:after {
    content: "";
    position: absolute;
    display: none;
}

.cbcontainer input:checked ~ .cbmark:after {
    display: block;
}

.cbcontainer .cbmark:after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg);
}

/* 结果表格样式 */
.cinfoT {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.cinfoT th, .cinfoT td {
    border: 1px solid #ddd;
    padding: 8px;
    text-align: center;
}

.cinfoT th {
    background-color: #f2f2f2;
    font-weight: bold;
}

.cinfoT tr:nth-child(even) {
    background-color: #f9f9f9;
}

/* 课程表格样式 */
#courseTable {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

#courseTable th {
    background-color: #0d233a;
    color: white;
    padding: 10px;
    text-align: center;
    font-weight: bold;
}

#courseTable td {
    padding: 8px;
    text-align: center;
    border-bottom: 1px solid #ddd;
}

#courseTable input, #courseTable select {
    width: 100%;
    max-width: 150px;
}

/* 删除按钮样式 */
.remove-btn {
    background-color: #dc3545;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 12px;
}

.remove-btn:hover {
    background-color: #c82333;
}

/* 添加课程按钮样式 */
#addCourse {
    background-color: #8bbc21 !important;
    color: white !important;
    border: none !important;
    padding: 8px 15px !important;
    border-radius: 3px !important;
    cursor: pointer !important;
    font-size: 14px !important;
}

#addCourse:hover {
    background-color: #7aa61c !important;
}

/* 清除浮动 */
#clear {
    clear: both;
}

.espaceforM {
    height: 20px;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .clefthalf, .crighthalf {
        width: 100%;
        float: none;
        margin: 0 0 20px 0;
    }
    
    #header {
        flex-direction: column;
        text-align: center;
        padding: 15px;
    }
    
    #logo {
        margin-bottom: 10px;
    }
    
    #content {
        padding: 15px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    table {
        font-size: 14px;
    }
    
    .inhalf, .innormal, .in4char {
        width: 100%;
        max-width: 120px;
    }
    
    input[type="submit"], input[type="button"] {
        width: 100%;
        margin: 10px 0;
    }
}

@media screen and (max-width: 480px) {
    #content {
        padding: 10px;
    }

    h1 {
        font-size: 20px;
    }

    table td {
        padding: 5px;
        font-size: 13px;
    }

    .panel {
        padding: 15px;
    }

    /* 移动端课程表格优化 */
    #courseTable {
        font-size: 12px;
    }

    #courseTable th, #courseTable td {
        padding: 5px 3px;
    }

    #courseTable input, #courseTable select {
        font-size: 12px;
        padding: 4px;
    }

    /* 移动端按钮优化 */
    .remove-btn {
        padding: 3px 6px;
        font-size: 10px;
    }

    /* 结果表格移动端优化 */
    .cinfoT {
        font-size: 12px;
    }

    .cinfoT th, .cinfoT td {
        padding: 5px 3px;
    }
}

/* 超小屏幕优化 */
@media screen and (max-width: 320px) {
    #courseTable th:first-child,
    #courseTable td:first-child {
        display: none;
    }

    .cinfoT th:first-child,
    .cinfoT td:first-child {
        display: none;
    }

    h1 {
        font-size: 18px;
        line-height: 1.2;
    }

    .panel {
        padding: 10px;
    }
}

/* GPA计算器特定样式 */
.gpa-calculator-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

.gpa-calculator-table th,
.gpa-calculator-table td {
    padding: 8px;
    border: 1px solid #ddd;
    text-align: left;
}

.gpa-calculator-table th {
    background-color: #f5f5f5;
    font-weight: bold;
}

.gpa-result-box {
    background: #e3edda;
    border: 1px solid #8db46d;
    padding: 20px;
    margin: 20px 0;
    border-radius: 5px;
    text-align: center;
}

.gpa-chart-container {
    margin: 20px 0;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 5px;
    text-align: center;
}

.add-course-btn {
    background-color: #8bbc21;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 14px;
    margin: 10px 5px;
}

.add-course-btn:hover {
    background-color: #7aa61e;
}

.remove-course-btn {
    background-color: #cc0000;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 3px;
    cursor: pointer;
    font-size: 12px;
}

.remove-course-btn:hover {
    background-color: #aa0000;
}

/* GPA计算器移动端优化 */
@media (max-width: 768px) {
    .gpa-calculator-table {
        font-size: 14px;
    }

    .gpa-calculator-table th,
    .gpa-calculator-table td {
        padding: 6px 4px;
    }

    .gpa-result-box {
        padding: 15px;
        margin: 15px 0;
    }

    .add-course-btn {
        width: 100%;
        margin: 10px 0;
    }

    .gpa-chart-container {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .gpa-calculator-table {
        font-size: 12px;
    }

    .gpa-calculator-table th,
    .gpa-calculator-table td {
        padding: 4px 2px;
    }

    .gpa-result-box {
        padding: 10px;
        font-size: 14px;
    }
}