/* CSS变量定义 */
:root {
    --bg-primary: #0d1117;
    --bg-secondary: #10161e;
    --text-primary: #e6edf3;
    --text-secondary: #a8b4c0;
    --border-color: #1f2832;
    --shadow-color: rgba(0,0,0,0.35);
    --hover-bg: #1a212b;
    --primary-color: #da003a;
    --card-bg: #10161e;
    --card-alt-bg: #1a212b;
}

/* 深色模式变量 */
body.dark-mode {
    --bg-primary: #0d1117;
    --bg-secondary: #10161e;
    --text-primary: #e6edf3;
    --text-secondary: #a8b4c0;
    --border-color: #1f2832;
    --shadow-color: rgba(0,0,0,0.45);
    --hover-bg: #1a212b;
    --primary-color: #da003a;
    --card-bg: #10161e;
    --card-alt-bg: #1a212b;
}

/* 深色模式下的文字颜色 */
body.dark-mode .label-item,
body.dark-mode .global-gain-label {
    color: #ffffff !important;
}

/* 深色模式下的输入框样式 */
body.dark-mode .gain-input,
body.dark-mode .freq-input,
body.dark-mode .q-input,
body.dark-mode .global-gain-input {
    background-color: #2c2c2c !important;
    color: #ffffff !important;
    border: 1px solid #555 !important;
}

/* 深色模式下的滑块样式 */
/* 夜间模式下滑杆保持原本的背景色，确保可见性 */
body.dark-mode .gain-slider,
body.dark-mode .global-gain-slider,
body.dark-mode .param-slider {
    background: rgba(255,255,255,0.2) !important;
}

body.dark-mode .gain-slider::-webkit-slider-track,
body.dark-mode .global-gain-slider::-webkit-slider-track,
body.dark-mode .param-slider::-webkit-slider-track {
    background: transparent !important; /* 保持透明背景 */
    border: 1px solid #c4c1c1d2 !important; /* 保持边框可见 */
}

body.dark-mode .gain-slider::-webkit-slider-thumb,
body.dark-mode .global-gain-slider::-webkit-slider-thumb,
body.dark-mode .param-slider::-webkit-slider-thumb {
    background: white !important; /* 滑块保持白色 */
    border: 2px solid #d2b16f !important; /* 保持边框颜色 */
}

body.dark-mode .gain-slider::-moz-range-track,
body.dark-mode .global-gain-slider::-moz-range-track,
body.dark-mode .param-slider::-moz-range-track {
    background: transparent !important; /* 保持透明背景 */
    border: 1px solid #c4c1c1d2 !important; /* 保持边框可见 */
}

body.dark-mode .gain-slider::-moz-range-thumb,
body.dark-mode .global-gain-slider::-moz-range-thumb,
body.dark-mode .param-slider::-moz-range-thumb {
    background: white !important; /* 滑块保持白色 */
    border: 2px solid #d2b16f !important; /* 保持边框颜色 */
}

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: var(--bg-primary); /* 调整为原版的背景色 */
    color: var(--text-primary);
    transition: all 0.3s ease;
}

/* 顶部导航栏 */
.top-header {
    background: linear-gradient(180deg, #11161e 0%, #0a0e14 100%);
    color: white; /* 文字颜色 */
    padding: 8px 16px 4px; /* 再次从下边收缩并略降整体 */
    display: flex;
    justify-content: space-between; /* 改为两端对齐 */
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1); /* 阴影颜色 */
}

/* 顶部左侧标题（Xmos设备EQ调试界面）
   - 左对齐：通过父容器的space-between布局自然处于左侧
   - 字号：20px（满足“字号20px”的要求）
   - 加粗：font-weight: 700（满足“加粗”的要求） */
.site-title {
    font-size: 20px; /* 标题字号 */
    font-weight: 700; /* 标题加粗 */
    color: #fff; /* 标题文字颜色，与顶部导航一致 */
    line-height: 1.2; /* 稍微增大行高以更好垂直居中 */
    margin-right: 12px; /* 与中间导航保持一定间距 */
    display: flex; /* 使内容与顶部行垂直居中对齐 */
    align-items: center; /* 垂直居中 */
}

.site-logo {
    height: 30px;
    width: auto;
    margin-right: 10px;
    display: block;
}

.top-nav {
    display: flex;
    gap: 30px;
    flex: 1;
    justify-content: center; /* 保持导航项居中 */
}

/* 右侧控制区域 */
.nav-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.control-item {
    position: relative;
}

/* 连接和翻译按钮样式 */
.connect-btn, .translate-btn {
    background: rgba(255,255,255,0.1);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.3s;
}

.connect-btn:hover, .translate-btn:hover {
    background: rgba(255,255,255,0.2);
}

/* 翻译按钮改为图标样式（无边框无背景） */
.translate-btn {
    background: none !important;
    border: none !important;
    padding: 0 !important;
}
.translate-btn:hover {
    background: none !important;
}
.translate-btn .lang-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    color: black;
}
body.dark-mode .translate-btn .lang-icon {
    color: white;
}

/* 悬停时显示语言下拉 */
.control-item:hover #languageDropdown,
.control-item #languageDropdown.show {
    display: block;
}

/* 下拉菜单样式 */
.dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 1000;
    display: none;
    margin-top: 0;
    padding-top: 4px;
}

/* 创建一个不可见的桥接区域，防止鼠标移动时失去悬停 */
.dropdown::before {
    content: '';
    position: absolute;
    top: -4px;
    left: 0;
    right: 0;
    height: 4px;
}

.dropdown.show {
    display: block;
}

.dropdown-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 2px 8px var(--shadow-color);
    min-width: 120px;
}

.dropdown-item {
    padding: 8px 12px;
    color: var(--text-primary);
    cursor: pointer;
    font-size: 12px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.3s;
}

.dropdown-item:last-child {
    border-bottom: none;
}

.dropdown-item:hover {
    background: var(--hover-bg);
}

.dropdown-item.selected {
    background: rgba(102, 126, 234, 0.1); /* 下拉项选中背景色 */
    color: #d2b16f; /* 下拉项选中文字颜色 */
}

/* 主题切换开关样式 */
.theme-switch {
    position: relative;
}

.theme-toggle {
    display: none;
}

.theme-label {
    display: block;
    width: 40px;
    height: 20px;
    background: rgba(255,255,255,0.3); /* 切换开关轨道背景色 */
    border-radius: 20px;
    cursor: pointer;
    position: relative;
    transition: all 0.3s;
}

.theme-slider {
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: white; /* 切换开关滑块颜色 */
    border-radius: 50%;
    transition: all 0.3s;
}

.theme-toggle:checked + .theme-label {
    background: rgba(255,255,255,0.5); /* 切换开关激活状态轨道背景色 */
}

.theme-toggle:checked + .theme-label .theme-slider {
    transform: translateX(20px);
}

/* 主容器 */
.main-container {
    display: flex;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

/* 左侧导航栏 */
.sidebar {
    width: 220px;
    background: var(--bg-secondary);
    padding: 14px 0 0;
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    min-height: 0;
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 31;
    transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.sidebar-version {
    color: #a8b4c0;
    font-size: 12px;
    text-align: center;
    padding: 10px 0;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.sidebar-top-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 0 20px 14px;
    margin-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-control-item {
    position: relative;
}

.sidebar-top-tools .connect-btn,
.sidebar-top-tools .translate-btn {
    color: var(--text-primary);
    border-color: var(--border-color);
}

.sidebar-top-tools .connect-btn {
    background: var(--hover-bg);
    padding: 5px 10px;
}

.sidebar-top-tools .translate-btn .lang-icon {
    color: var(--text-primary);
}

.sidebar-top-tools .dropdown {
    top: calc(100% + 4px);
    right: 0;
    left: auto;
}

.sidebar-item {
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    text-align: center;
}

.sidebar-item.active {
    background: rgba(218, 0, 58, 0.14);
    color: #e6edf3;
    border-left-color: #da003a;
}

.sidebar-item:hover:not(.active) {
    background: var(--hover-bg);
}

/* 主要内容区域 */
.main-content {
    flex: 1;
    padding: 11px;
    overflow: hidden;
    min-width: 0;
    min-height: 0;
    display: flex;
    flex-direction: column;
}

.sidebar-overlay {
    position: absolute;
    inset: 0;
    background: rgba(3, 10, 19, 0.58);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.28s ease;
    z-index: 25;
}

.sidebar-drawer-toggle {
    position: absolute;
    left: 220px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 64px;
    border: 1px solid var(--border-color);
    border-left: 0;
    border-radius: 0 9px 9px 0;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 32;
    transition: left 0.28s ease, background 0.28s ease, color 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.sidebar-drawer-toggle .arrow {
    position: absolute;
    font-size: 12px;
    line-height: 1;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.sidebar-drawer-toggle .arrow-close {
    opacity: 0;
    transform: scale(0.85);
}

.main-container.nav-collapsed .sidebar {
    transform: translateX(-100%);
    box-shadow: none;
}

.main-container.nav-collapsed .sidebar-drawer-toggle {
    left: 0;
}

.main-container.nav-collapsed .sidebar-drawer-toggle .arrow-open {
    opacity: 1;
    transform: scale(1);
}

.main-container.nav-collapsed .sidebar-drawer-toggle .arrow-close {
    opacity: 0;
    transform: scale(0.85);
}

.main-container.nav-expanded .sidebar {
    transform: translateX(0);
    box-shadow: 14px 0 40px rgba(0, 0, 0, 0.28);
}

.main-container.nav-expanded .sidebar-overlay {
    opacity: 1;
    pointer-events: auto;
}

.main-container.nav-expanded .sidebar-drawer-toggle {
    left: 220px;
}

.main-container.nav-expanded .sidebar-drawer-toggle .arrow-open {
    opacity: 0;
    transform: scale(0.85);
}

.main-container.nav-expanded .sidebar-drawer-toggle .arrow-close {
    opacity: 1;
    transform: scale(1);
}

.eqv2-shell {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 0;
    flex: 1;
}

.eqv2-root {
    width: 100%;
    height: 100%;
    min-height: 0;
}