/* Apple风格核心样式：极简、通透、圆角、细腻阴影、浅灰主调 */
:root {
    --apple-bg: #f5f5f7;
    --apple-card-bg: #ffffff;
    --apple-text-primary: #1d1d1f;
    --apple-text-secondary: #86868b;
    --apple-accent: #0071e3;
    --apple-accent-hover: #0077ed;
    --apple-border: #e6e6e8;
    --apple-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    --apple-shadow-hover: 0 4px 12px rgba(0, 0, 0, 0.08);
    --apple-success: #34c759;
    --apple-warning: #ff9500;
    --apple-error: #ff3b30;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--apple-bg);
    color: var(--apple-text-primary);
    line-height: 1.5;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* 头部样式 */
/* 让头部悬浮+玻璃效果，下滑时仍可见 */
.header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(245, 245, 247, 0.75);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--apple-border);
    margin: -20px -20px 30px -20px;
    /* 抵消 body padding */
    padding: 20px 20px 0 20px;
}

.header h1 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--apple-text-primary);
}

.header .sub-title {
    font-size: 16px;
    color: var(--apple-text-secondary);
}

/* 分支切换样式 */
.branch-switcher {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 24px;
}

.branch-switcher label {
    font-size: 14px;
    color: var(--apple-text-secondary);
}

.branch-switcher select {
    padding: 8px 32px 8px 16px;
    border: 1px solid var(--apple-border);
    border-radius: 20px;
    background-color: var(--apple-card-bg);
    font-size: 14px;
    min-width: 200px;
    outline: none;
    transition: all 0.2s ease;
    /* 关键修复：覆盖浏览器原生黑色样式 */
    color: var(--apple-text-primary);
    -webkit-appearance: none;
    /* 移除Safari原生样式 */
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2386868b' d='M10.8 0.8L6 5.6L1.2 0.8L0 2L6 8L12 2L10.8 0.8Z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.branch-switcher select option {
    /* 修复选项黑色问题 */
    color: var(--apple-text-primary);
    background-color: var(--apple-card-bg);
    padding: 8px 16px;
}

.branch-switcher select:focus {
    border-color: var(--apple-accent);
    box-shadow: 0 0 0 2px rgba(0, 113, 227, 0.2);
}

.branch-switcher button {
    padding: 8px 24px;
    background-color: var(--apple-accent);
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s ease;
}

.branch-switcher button:hover {
    background-color: var(--apple-accent-hover);
}

/* 状态提示 */
.status-tip {
    padding: 12px 20px;
    border-radius: 10px;
    margin-bottom: 24px;
    text-align: center;
    font-size: 14px;
    font-weight: 500;
    background-color: var(--apple-card-bg);
    border: 1px solid var(--apple-border);
}

.tip-success {
    color: var(--apple-success);
    border-color: rgba(52, 199, 89, 0.2);
    background-color: rgba(52, 199, 89, 0.05);
}

.tip-warning {
    color: var(--apple-warning);
    border-color: rgba(255, 149, 0, 0.2);
    background-color: rgba(255, 149, 0, 0.05);
}

.tip-error {
    color: var(--apple-error);
    border-color: rgba(255, 59, 48, 0.2);
    background-color: rgba(255, 59, 48, 0.05);
}

/* 卡片容器（硬件信息） */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.card {
    background-color: var(--apple-card-bg);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--apple-shadow);
    transition: box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: var(--apple-shadow-hover);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--apple-text-primary);
    border-bottom: 1px solid var(--apple-border);
    padding-bottom: 8px;
}

.card-content {
    font-size: 14px;
    margin: 8px 0;
    color: var(--apple-text-primary);
}

/* 面板样式（CPU核心/硬盘/图表） */
.panel {
    background-color: var(--apple-card-bg);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 30px;
    box-shadow: var(--apple-shadow);
}

/* 图表面板专用的panel-header */
.chart-panel .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--apple-border);
    padding-bottom: 12px;
}

.chart-panel .panel-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 0;
    color: var(--apple-text-primary);
    border-bottom: none;
    padding-bottom: 0;
}

/* 普通面板标题 */
.panel-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--apple-text-primary);
    border-bottom: 1px solid var(--apple-border);
    padding-bottom: 12px;
}

/* 折叠按钮样式 */
.toggle-all-container {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background-color: var(--apple-card-bg);
    border: 1px solid var(--apple-border);
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    color: var(--apple-text-primary);
    transition: all 0.2s ease;
}

.toggle-btn:hover {
    background-color: var(--apple-accent);
    color: white;
    border-color: var(--apple-accent);
}

.toggle-all-btn {
    font-weight: 500;
}

.chart-toggle-btn {
    padding: 6px 12px;
    font-size: 12px;
}

.toggle-icon {
    transition: transform 0.3s ease;
    display: inline-block;
}

.toggle-btn.collapsed .toggle-icon {
    transform: rotate(-90deg);
}

/* 图表折叠样式 */
.chart-container {
    overflow: hidden;
    max-height: 2000px;
    opacity: 1;
    transition: max-height 0.4s ease, opacity 0.4s ease, margin-top 0.4s ease;
}

.chart-container.collapsed {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

.chart-panel.collapsed .panel-header {
    margin-bottom: 0;
    border-bottom: none;
    padding-bottom: 0;
}

/* 对于没有信息区域的面板（CPU核心、硬盘），折叠时进一步减小间距 */
.chart-panel[data-chart-id="cpu-cores-container"],
.chart-panel[data-chart-id="disk-container"] {
    transition: padding 0.4s ease;
}

.chart-panel[data-chart-id="cpu-cores-container"].collapsed,
.chart-panel[data-chart-id="disk-container"].collapsed {
    padding-top: 15px !important;
    padding-bottom: 15px !important;
}

.chart-panel[data-chart-id="cpu-cores-container"]:not(.collapsed),
.chart-panel[data-chart-id="disk-container"]:not(.collapsed) {
    padding-top: 30px !important;
    padding-bottom: 30px !important;
}

.chart-panel[data-chart-id="cpu-cores-container"].collapsed .panel-header,
.chart-panel[data-chart-id="disk-container"].collapsed .panel-header {
    margin-bottom: 0;
}

/* 确保信息在折叠时仍然显示 */
.chart-panel.collapsed .net-speed,
.chart-panel.collapsed .system-info,
.chart-panel.collapsed .usage-info {
    display: flex;
    margin-bottom: 0;
}

/* 卡片按下去微微内陷，点按反馈更真实 */
.card:active {
    transform: scale(0.98);
    box-shadow: var(--apple-shadow);
}

/* CPU核心样式 */
.cpu-cores-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
}

.core-box {
    padding: 16px 8px;
    border-radius: 12px;
    text-align: center;
    color: white;
    font-weight: 500;
    transition: transform 0.2s ease;
}

.core-box:hover {
    transform: translateY(-2px);
}

.core-box.low {
    background-color: var(--apple-success);
}

.core-box.medium {
    background-color: var(--apple-warning);
}

.core-box.high {
    background-color: var(--apple-error);
}

.core-num {
    font-size: 12px;
    margin-bottom: 4px;
    opacity: 0.9;
}

.core-usage {
    font-size: 18px;
    font-weight: 600;
}

/* 硬盘样式 */
.disk-container {
    margin-top: 16px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.disk-item {
    margin-bottom: 0;
}

.disk-item h4 {
    font-size: 14px;
    color: var(--apple-text-secondary);
    margin-bottom: 8px;
}

.progress-bar {
    width: 100%;
    height: 6px;
    background-color: var(--apple-border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
}

.low-fill {
    background-color: var(--apple-success);
}

.medium-fill {
    background-color: var(--apple-warning);
}

.high-fill {
    background-color: var(--apple-error);
}

.disk-info {
    margin-top: 8px;
    color: var(--apple-text-secondary);
    font-size: 13px;
}

/* 网卡流量样式 */
.net-speed {
    display: flex;
    gap: 24px;
    margin-bottom: 16px;
    font-size: 14px;
}

.net-speed span {
    color: var(--apple-accent);
    font-weight: 600;
}

.system-info {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 16px;
    font-size: 14px;
}

.system-info p {
    margin: 8px 0;
}

.system-info span {
    color: var(--apple-accent);
    font-weight: 600;
}

/* 系统资源趋势信息样式 */
.usage-info {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    margin-bottom: 16px;
    font-size: 14px;
}

.usage-info p {
    margin: 8px 0;
}

.usage-info span {
    color: var(--apple-accent);
    font-weight: 600;
}

/* 图表容器 */
.chart-container {
    width: 100%;
    margin-top: 16px;
    border-radius: 8px;
}

/* 只有真正的ECharts图表容器才设置固定高度 */
#net-chart,
#system-chart,
#usage-chart {
    height: 400px;
}

/* CPU核心和硬盘容器不设置固定高度，但设置合适的max-height用于动画 */
#cpu-cores-container {
    max-height: 1000px;
    height: auto;
}

#disk-container {
    max-height: 1000px;
    height: auto;
}

/* 补充：增加全局间距，优化Apple简约风格 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    /* 增加容器内边距 */
}

.header {
    text-align: center;
    margin-bottom: 40px;
    /* 增加头部底部间距 */
    padding: 30px 0;
    /* 增加头部内边距 */
}

/* 分支切换区域增加间距 */
.branch-switcher {
    margin-bottom: 30px;
    /* 增加底部间距 */
    padding: 10px 0;
}

/* 状态提示增加间距 */
.status-tip {
    margin-bottom: 35px;
    /* 增加底部间距 */
}

/* 卡片容器增加间距 */
.card-container {
    gap: 25px;
    /* 增加卡片间距 */
    margin-bottom: 40px;
    /* 增加底部间距 */
}

/* 卡片内增加间距 */
.card {
    padding: 30px;
    /* 增加卡片内边距 */
    margin-bottom: 10px;
}

.card-title {
    margin-bottom: 20px;
    /* 增加标题底部间距 */
}

.card-content {
    margin: 12px 0;
    /* 增加内容行间距 */
}

/* 面板增加间距 */
.panel {
    margin-bottom: 40px;
    /* 增加面板间距 */
    padding: 30px;
    /* 增加面板内边距 */
}

.panel-title {
    margin-bottom: 25px;
    /* 增加面板标题间距 */
}

/* CPU核心容器增加间距 */
.cpu-cores-container {
    gap: 15px;
    /* 增加核心卡片间距 */
    margin-top: 20px;
}

/* 硬盘信息优化 */
.disk-item h4 {
    margin-bottom: 10px;
    font-size: 15px;
}

.progress-bar {
    margin: 12px 0;
    /* 增加进度条上下间距 */
    height: 8px;
    /* 进度条更细，更简约 */
}

.disk-info {
    display: flex;
    justify-content: center;
    align-items: center;
}

.disk-percent {
    color: var(--apple-accent);
    font-weight: 600;
    font-size: 16px;
    margin-right: 24px;
}

.disk-size {
    color: var(--apple-text-secondary);
    font-size: 14px;
}

/* 网卡速度区域优化 */
.net-speed {
    margin-bottom: 25px;
    /* 增加底部间距 */
    padding: 10px 0;
}

/* 图表容器增加间距 */
.chart-container {
    margin-top: 25px;
    /* 增加图表顶部间距 */
    height: 420px;
    /* 增加图表高度 */
}

/* 响应式优化 */
@media (max-width: 768px) {
    .card-container {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .disk-container {
        grid-template-columns: 1fr;
    }

    .branch-switcher {
        flex-direction: column;
        gap: 8px;
    }

    .net-speed {
        flex-direction: column;
        gap: 8px;
    }

    .chart-container {
        height: 350px;
    }

    .panel {
        padding: 20px;
    }
}

/* 重试按钮样式 */
.retry-container {
    display: flex;
    justify-content: center;
    margin-bottom: 24px;
}

.retry-btn {
    padding: 12px 24px;
    background-color: var(--apple-accent);
    color: white;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s ease;
}

.retry-btn:hover {
    background-color: var(--apple-accent-hover);
}

footer {
    margin-top: 80px;
    padding: 26px 0 34px;
    text-align: center;
    font-size: 11px;
    line-height: 1.4;
    letter-spacing: .08em;
    color: #6e6e73;
    background: #f5f5f7;
    border-top: 1px solid #d2d2d7;
}

footer .project {
    font-weight: 600;
    text-transform: uppercase;
    /* 项目名大写，Apple 爱用 */
    margin-bottom: 4px;
}

footer .studio {
    font-weight: 400;
    text-transform: none; }

.github-link {
    color: var(--apple-accent);
    text-decoration: underline;
    font-weight: 600;
    margin-left: 8px;
    cursor: pointer;
    transition: color 0.2s ease;
}