:root {
    --bg-color: #f5f7fa;
    --text-color: #333;
    --card-bg: white;
    --border-color: #e1e8ed;
    --hover-bg: #f1f7ff;
    --shadow: rgba(0, 0, 0, 0.05);
    --heading-color: #2c3e50;
    --primary-color: #3498db;
    --secondary-color: #e74c3c;
    --table-stripe: #f9f9f9;
    --button-bg: #2c3e50;
    --info-bg: #f8f9fa;
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --card-bg: #2d2d2d;
    --border-color: #404040;
    --hover-bg: #3a3a3a;
    --shadow: rgba(0, 0, 0, 0.3);
    --heading-color: #e0e0e0;
    --primary-color: #4dabf7;
    --secondary-color: #ff6b6b;
    --table-stripe: #252525;
    --button-bg: #404040;
    --info-bg: #2a2a2a;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

body {
    font-family: "Microsoft YaHei", sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    padding: 20px;
    transition: background-color 0.3s, color 0.3s;
    scrollbar-gutter: always;
}

.header-bar {
    position: sticky;
    top: 0;
    z-index: 120;
    background: var(--bg-color);
    padding: 20px 20px 12px;
    box-shadow: none;
    transition: box-shadow 0.3s ease, background-color 0.3s ease, color 0.3s ease;
    margin-bottom: 12px;
}

.header-bar.scrolled {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.header-inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 12px;
}

h1 {
    text-align: center;
    margin: 0;
    color: var(--heading-color);
    font-size: 2.5rem;
}

.dark-mode-toggle {
    padding: 10px 20px;
    background-color: var(--button-bg);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 19px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.dark-mode-toggle:hover {
    background-color: var(--primary-color);
    transform: translateY(-2px);
}

/* 异常状态颜色 */
.qiangjie, .weisuo {
    color: #F0D12B;
    font-weight: 600;
}

.suibing, .shuanghan {
    color: #98EFF0;
    font-weight: 600;
}

.lieshuang {
    color: #98EFF0;
    font-weight: 600;
}

.zhuoshao {
    color: #FF5521;
    font-weight: 600;
}

.gandian {
    color: #2EB6FF;
    font-weight: 600;
}

.qinshi {
    color: #FE437E;
    font-weight: 600;
}

.container {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 40px;
}

.formula-section {
    flex: 1;
    min-width: calc(50% - 15px);
    max-width: calc(50% - 15px);
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 12px var(--shadow);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.formula-section.full-width {
    min-width: 100%;
    max-width: 100%;
}

.formula-section:hover {
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

body.dark-mode .formula-section:hover {
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.formula-section h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid transparent;
    transition: border-bottom-color 0.3s ease;
}

.formula-section:hover h2 {
    border-bottom-color: var(--primary-color);
}

.formula-section h3 {
    color: var(--heading-color);
    font-size: 1.2rem;
    margin-top: 15px;
    margin-bottom: 10px;
}

.formula-box {
    background: var(--info-bg);
    border-left: 4px solid transparent;
    padding: 15px;
    margin: 10px 0;
    border-radius: 4px;
    overflow-x: auto;
    transition: border-left-color 0.3s ease;
}

.formula-section:hover .formula-box {
    border-left-color: var(--primary-color);
}

.formula-box p {
    margin: 10px 0;
    font-size: 18px;
}

.description {
    color: var(--text-color);
    font-size: 17px;
    line-height: 1.8;
    margin: 10px 0;
}

.math {
    display: block;
    margin: 15px 0;
    overflow-x: auto;
    overflow-y: hidden;
    font-size: 120%;
    -webkit-overflow-scrolling: touch;
    scrollbar-gutter: always;
}

.math::-webkit-scrollbar:horizontal {
    height: 8px;
}

.math::-webkit-scrollbar-thumb:horizontal {
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 3px;
}

body.dark-mode .math::-webkit-scrollbar-thumb:horizontal {
    background-color: #888;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: 15px 0;
    font-size: 17px;
    display: table;
    table-layout: fixed;
    overflow: hidden;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    -webkit-overflow-scrolling: touch;
}

th,
td {
    border: none;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 12px;
    text-align: center;
    white-space: nowrap;
}

th:last-child,
td:last-child {
    border-right: none;
}

tr:last-child td {
    border-bottom: none;
}

th {
    background-color: var(--primary-color);
    color: white;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

tr:nth-child(even) {
    background-color: var(--table-stripe);
}

/* 角色弹窗表头文字阴影 */
.character-table th {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

tr:hover {
    background-color: var(--hover-bg);
}

/* 表格滚动条样式 */
table::-webkit-scrollbar {
    height: 8px;
}

table::-webkit-scrollbar-thumb {
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 3px;
}

body.dark-mode table::-webkit-scrollbar-thumb {
    background-color: #888;
}

.note {
    background: rgba(230, 126, 34, 0.1);
    border-left: 4px solid transparent;
    padding: 12px;
    margin: 10px 0;
    border-radius: 4px;
    font-size: 17px;
    transition: border-left-color 0.3s ease;
}

.formula-section:hover .note {
    border-left-color: #e67e22;
}

@media (max-width: 768px) {
    h1 {
        font-size: 1.8rem;
    }

    /* 手机端按钮文字隐藏，只显示图标 */
    .dark-mode-toggle .mode-text,
    .dark-mode-toggle .changelog-text {
        display: none;
    }

    .dark-mode-toggle {
        padding: 8px 12px;
        font-size: 13px;
    }

    .header-inner {
        grid-template-columns: auto 1fr auto;
        gap: 8px;
    }

    .formula-section {
        padding: 15px;
        min-width: 100%;
        max-width: 100%;
    }

    table {
        font-size: 12px;
    }

    th,
    td {
        padding: 8px 4px;
    }
}

.mjx-chtml {
    display: inline-block !important;
    font-size: 120% !important;
}

/* 更新日志弹窗样式 */
.overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.25s ease, visibility 0s linear 0.25s;
}

.overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition: opacity 0.25s ease;
}

.overlay-content {
    width: 85%;
    max-height: 85vh;
    background: var(--card-bg);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    border-radius: 12px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    opacity: 0;
    transform: scale(0.98);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.overlay.active .overlay-content {
    opacity: 1;
    transform: scale(1);
}

.overlay-header {
    position: sticky;
    top: 0;
    z-index: 1001;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 16px 20px;
    background: var(--bg-color);
    box-shadow: 0 2px 8px var(--shadow);
}

.overlay-header h2 {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin: 0;
    text-align: center;
    color: var(--heading-color);
    font-size: 1.8rem;
}

.overlay-body {
    padding: 20px;
    overflow: auto;
    flex: 1;
}

body.overlay-open {
    overflow: hidden;
}

.info-box {
    background: var(--info-bg);
    border-left: 4px solid transparent;
    padding: 15px;
    margin: 15px 0;
    border-radius: 4px;
    transition: border-left-color 0.3s ease;
}

.overlay-content:hover .info-box {
    border-left-color: var(--primary-color);
}
/* 查看按钮样式 */
.view-btn {
    background: linear-gradient(135deg, var(--primary-color), #2980b9);
    color: white;
    border: none;
    padding: 12px 28px;
    font-size: 1rem;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(52, 152, 219, 0.3);
    font-weight: 500;
}

.view-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(52, 152, 219, 0.4);
    background: linear-gradient(135deg, #2980b9, #1e5a8e);
}

.view-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

/* 弹窗关闭按钮 */
.close-btn {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-color);
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    margin-left: auto;
}

.close-btn:hover {
    background: var(--hover-bg);
    border-radius: 4px;
}

/* 毕业计算器专用样式 */
.grad-calc-body {
    padding: 16px 24px 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.grad-calc-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 12px 30px var(--shadow);
}

.grad-calc-section h3 {
    margin: 0 0 12px;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.grad-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
    margin-bottom: 12px;
}

.grad-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-color);
    margin-bottom: 4px;
}

.grad-input, .grad-select {
    width: 100%;
    padding: 9px 10px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    font-size: 0.95rem;
    background: var(--card-bg);
    color: var(--text-color);
}

.grad-checkbox-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}

.grad-checkbox-row input[type="checkbox"] {
    width: auto;
    margin-right: 6px;
}

.grad-attr-block {
    border: 1px dashed var(--border-color);
    padding: 12px;
    border-radius: 12px;
    margin-bottom: 10px;
    background: var(--info-bg);
}

.grad-attr-block.hidden {
    display: none;
}

.grad-btn {
    width: 100%;
    padding: 9px 10px;
    background: var(--primary-color);
    color: #fff;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
    font-size: 0.95rem;
}

.grad-btn:hover {
    background: #2980b9;
    transform: translateY(-1px);
}

.grad-result-box {
    background: var(--info-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px;
    min-height: 120px;
    white-space: pre-wrap;
    font-family: "Consolas", "Courier New", monospace;
    font-size: 0.9rem;
    color: var(--text-color);
    line-height: 1.6;
}

.grad-result-summary {
    background: var(--info-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 16px;
    line-height: 1.6;
}

.grad-disk-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}

@media (max-width: 1024px) {
    .grad-disk-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 720px) {
    .grad-disk-grid {
        grid-template-columns: 1fr;
    }
}

.grad-disk-card {
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 12px;
    background: var(--card-bg);
    box-shadow: 0 8px 20px var(--shadow);
}

.grad-disk-card h4 {
    margin: 0 0 8px;
    font-size: 1.05rem;
    color: var(--primary-color);
}

.grad-sub-line {
    padding: 6px 8px;
    border-radius: 8px;
    background: var(--info-bg);
    margin-bottom: 6px;
    font-size: 0.9rem;
}

.grad-sub-line:last-child {
    margin-bottom: 0;
}

.grad-disk-meta {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-color);
}

.grad-hint {
    font-size: 0.85rem;
    color: var(--text-color);
    margin-top: 6px;
}

.grad-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}