/* ==================== 公共样式文件 ====================
 * 包含所有页面共享的样式：
 * - CSS 变量和主题配置
 * - 基础样式和重置
 * - CRT 终端效果
 * - 导航栏样式
 * - 按钮和表单组件
 * - 通用动画
 * - 响应式布局
 * ================================================= */

/* ========== 全局变量 ========== */
:root {
    /* 经典终端配色 - 黑底绿字 */
    --font-mono: "Times New Roman", Times, serif;
    --font-sans: "Times New Roman", Times, serif;

    --terminal-bg: #e6f2ff;
    --terminal-fg: #0066cc;
    --terminal-green: #0066cc;
    --terminal-green-dim: #3399ff;
    --terminal-green-dark: #0052a3;
    --terminal-green-bright: #0080ff;
    --terminal-shadow: rgba(var(--glow-rgb), 0.5);
    --terminal-glow: 0 0 5px rgba(var(--glow-rgb), 0.5);
    /* 核心发光色 RGB 值 (Theme Aware) - 蓝色主题 */
    --glow-rgb: 0, 102, 204;

    /* 自定义绿色光标集合 */
    --cursor-default: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><rect x="0" y="0" width="12" height="18" fill="%2300ff00" opacity="0.8"/></svg>'), auto;
    --cursor-pointer: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><rect x="0" y="0" width="14" height="18" fill="%2300ff41" opacity="1"/><rect x="2" y="2" width="10" height="14" fill="%23000" opacity="0.3"/></svg>'), pointer;
    --cursor-text: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><rect x="8" y="0" width="2" height="18" fill="%2300ff00"/></svg>'), text;

    /* 主题色 */
    --bg-primary: #e6f2ff;
    --bg-secondary: #d6e9ff;
    --bg-tertiary: #c5dfff;
    --text-primary: #1a1a1a;
    --text-secondary: #333333;
    --accent-color: #0066cc;
    --accent-hover: #0052a3;
    --border-color: #0066cc;
    --shadow-sm: 0 0 10px rgba(var(--glow-rgb), 0.3);
    --shadow-md: 0 0 20px rgba(var(--glow-rgb), 0.4);
    --shadow-lg: 0 0 30px rgba(var(--glow-rgb), 0.5);
    --navbar-bg: rgba(0, 0, 0, 0.95);
    --chat-user-bg: #001a00;
    --chat-ai-bg: #000f00;


    /* 侧边栏和控制台的新变量 */
    --control-bg: rgba(0, 0, 0, 0.8);
    --control-color: #00ff00;
    --control-border: #00ff00;
    --sidebar-width: 300px;
    --sidebar-bg: rgba(10, 10, 10, 0.95);
    --sidebar-backdrop: blur(10px);
    --sidebar-border: 1px solid #00ff00;
    --sidebar-shadow: 0 0 50px rgba(var(--glow-rgb), 0.2);
}

/* 浅色主题 (Light Mode) - 磨砂玻璃风格 */
/* 浅色主题 (Light Mode) - 米白简约风 (Rice White Minimalist) */
[data-theme="light"] {
    /* 背景色：温润的米白色 */
    --bg-primary: #F9F9F9;
    --bg-secondary: #FFFFFF;
    --bg-tertiary: #F0F2F5;

    /* 文字颜色：柔和的深岩灰 */
    --text-primary: #333333;
    --text-secondary: #666666;

    /* 强调色：纯粹黑白灰 */
    --accent-color: #2C2C2C;
    --accent-hover: #000000;

    --border-color: #E0E0E0;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.08);
    --navbar-bg: rgba(249, 249, 249, 0.9);

    /* 终端特定颜色映射 - 转为极简黑灰 */
    --terminal-green: #2C2C2C;
    /* 主色调映射为深灰 */
    --terminal-green-dim: #666666;
    /* 装饰性元素颜色 */
    --terminal-green-bright: #000000;
    /* 高亮色 */
    --terminal-bg: #FFFFFF;

    --cursor-default: auto;
    --cursor-pointer: pointer;
    --cursor-text: text;

    /* 侧边栏浅色变量 */
    --control-bg: rgba(255, 255, 255, 0.95);
    --control-color: #333333;
    --control-border: #E6E6E6;
    --sidebar-bg: rgba(255, 255, 255, 0.95);
    --sidebar-backdrop: blur(20px);
    --sidebar-border: 1px solid rgba(0, 0, 0, 0.05);
    --sidebar-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);

    /* 浅色模式光晕变透明/同色 (Invisible Glows) */
    --glow-rgb: 249, 249, 249;

    /* 浅色模式选区颜色：高端黑白 */
    ::selection {
        background: #000000;
        color: #ffffff;
    }
}

/* 浅色模式全局字体切换：无衬线现代体 */
[data-theme="light"] body {
    font-family: var(--font-sans) !important;
    text-shadow: none !important;
    background-color: #e6f2ff !important;
}

/* 确保默认模式（暗色模式）也使用淡蓝色背景 */
body {
    background-color: #e6f2ff !important;
}

html {
    background-color: #e6f2ff !important;
}

/* 浅色模式下滚动条美化 */
[data-theme="light"] ::-webkit-scrollbar {
    width: 8px;
    background: transparent;
}

[data-theme="light"] ::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

[data-theme="light"] ::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

/* 浅色模式下保留部分元素的极客等宽字体 (Hybrid Strategy) */
[data-theme="light"] code,
[data-theme="light"] pre,
[data-theme="light"] .nav-brand,
[data-theme="light"] .message-time,
[data-theme="light"] .status-badge,
[data-theme="light"] .project-link,
[data-theme="light"] .nav-menu a,
[data-theme="light"] .footer-section h3 {
    font-family: var(--font-mono) !important;
}

/* 浅色模式下移除所有绿色光效和CRT效果 */
[data-theme="light"] body::after {
    display: none !important;
}

[data-theme="light"] body {
    text-shadow: none !important;
    background-color: #e6f2ff !important;
}

/* 暗色主题 - 保持淡蓝色背景 */
[data-theme="dark"] {
    --bg-primary: #e6f2ff;
    --bg-secondary: #d6e9ff;
    --bg-tertiary: #c5dfff;
    --text-primary: #1a1a1a;
    --text-secondary: #333333;
    --accent-color: #0066cc;
    --accent-hover: #0052a3;
    --border-color: #0066cc;
    --shadow-sm: 0 0 10px rgba(var(--glow-rgb), 0.3);
    --shadow-md: 0 0 20px rgba(var(--glow-rgb), 0.4);
    --shadow-lg: 0 0 30px rgba(var(--glow-rgb), 0.5);
    --navbar-bg: rgba(0, 0, 0, 0.95);
    --chat-user-bg: #001a00;
    --chat-ai-bg: #000f00;
}

/* ========== 基础样式重置 ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    /* 自定义绿色光标 */
    cursor: var(--cursor-default);
}

html {
    scroll-behavior: smooth;
    background-color: #e6f2ff;
}

body {
    font-family: "Times New Roman", Times, serif;
    background-color: #e6f2ff;
    background-image: none;
    position: relative;
    color: var(--text-primary);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
    text-shadow: none;
    min-height: 100vh;
}

/* ========== CRT 扫描线和屏幕光晕效果 ========== */
body::after {
    content: ' ';
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(var(--glow-rgb), 0.02), rgba(0, 0, 255, 0.06));
    z-index: 2;
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
    animation: scanlines 0.2s infinite;
}

@keyframes scanlines {
    0% {
        background-position: 0 0;
    }

    100% {
        background-position: 0 100%;
    }
}

/* CRT 闪烁效果和屏幕边缘光晕 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 9999;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(var(--glow-rgb), 0.02), rgba(0, 255, 0, 0.06));
    background-size: 100% 2px, 3px 100%;
    box-shadow: inset 0 0 120px 30px var(--terminal-green-dark);
    opacity: 0.4;
    animation: flicker 0.15s infinite, scanlines 0.2s infinite;
}

@keyframes flicker {
    0% {
        opacity: 0.97;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.97;
    }
}

/* ========== 通用容器 ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 2;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1rem 20px;
}

/* ========== 导航栏样式 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(230, 242, 255, 0.9);
    backdrop-filter: blur(10px);
    /* 用柔和的渐变阴影代替硬边框 */
    box-shadow: 0 1px 0 rgba(0, 102, 204, 0.2),
        0 4px 20px rgba(0, 0, 0, 0.1);
    border-bottom: none;
    z-index: 1000;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
        background-color 0.3s ease,
        box-shadow 0.3s ease,
        opacity 0.3s ease;
}

/* 导航栏滚动隐藏/显示动画 */
.navbar.nav-hidden {
    transform: translateY(-100%);
    opacity: 0;
}

.navbar.nav-visible {
    transform: translateY(0);
    opacity: 1;
}

.navbar.scrolled {
    background-color: rgba(214, 233, 255, 0.95);
    box-shadow: 0 1px 0 rgba(0, 102, 204, 0.3),
        0 8px 30px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-logo a {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
    text-decoration: none;
    font-family: "Times New Roman", Times, serif;
    text-shadow: var(--terminal-glow);
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

[data-theme="light"] .nav-logo a {
    text-shadow: none !important;
    color: var(--text-primary);
}

.nav-logo a::before {
    content: '[ ';
    color: var(--terminal-green-dim);
}

.nav-logo a::after {
    content: ' ]';
    color: var(--terminal-green-dim);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--terminal-green-dim);
    text-decoration: none;
    font-family: "Times New Roman", Times, serif;
    font-size: 0.9rem;
    transition: color 0.3s ease;
    position: relative;
    font-weight: normal;
    /* Override common default if any */
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--terminal-green-bright);
    text-shadow: 0 0 8px rgba(var(--glow-rgb), 0.6);
}

/* Optional: Active indicator line from certificates.css if desired, 
   but user just said 'exactly the same', so adding it is safer */
.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--terminal-green);
    box-shadow: 0 0 10px rgba(var(--glow-rgb), 0.5);
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    font-family: "Times New Roman", Times, serif;
}

.nav-link::before {
    content: '> ';
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-link:hover::before {
    opacity: 1;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    box-shadow: var(--terminal-glow);
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle,
.mobile-menu-toggle {
    background: none;
    border: 1px solid var(--terminal-green);
    color: var(--text-primary);
    font-size: 1.2rem;
    /* cursor 继承自全局设置，无需重复声明 */
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    transition: all 0.3s ease;
    font-family: "Times New Roman", Times, serif;
}

.theme-toggle:hover,
.mobile-menu-toggle:hover {
    background-color: var(--terminal-green);
    color: var(--bg-primary);
    box-shadow: var(--terminal-glow);
}

.mobile-menu-toggle {
    display: none;
}

/* ========== 通用按钮样式 ========== */
.btn {
    padding: 1rem 2rem;
    border-radius: 0;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid var(--terminal-green);
    /* cursor 继承自全局 var(--cursor-pointer)，无需重复声明 */
    font-size: 0.89rem;
    font-family: "Times New Roman", Times, serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: inline-block;
}

.btn-primary {
    background: transparent;
    color: var(--terminal-green);
    box-shadow: 0 0 10px rgba(var(--glow-rgb), 0.3);
}

.btn-primary::before {
    content: '[';
    color: var(--terminal-green-bright);
}

.btn-primary::after {
    content: ']';
    color: var(--terminal-green-bright);
}

.btn-primary:hover {
    background: var(--terminal-green);
    color: var(--terminal-bg);
    box-shadow: var(--terminal-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--terminal-green);
    border: 2px solid var(--terminal-green-dark);
}

.btn-secondary::before {
    content: '< ';
}

.btn-secondary::after {
    content: ' >';
}

.btn-secondary:hover {
    border-color: var(--terminal-green);
    box-shadow: var(--terminal-glow);
    transform: translateY(-2px);
}

/* ========== 通用标题样式 ========== */
.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
    color: var(--terminal-green-bright);
    font-family: "Times New Roman", Times, serif;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: var(--terminal-glow);
}

.section-title::before {
    content: '=== ';
    color: var(--terminal-green);
}

.section-title::after {
    content: ' ===';
    color: var(--terminal-green);
}

.section-subtitle {
    text-align: center;
    color: var(--terminal-green);
    margin-bottom: 2rem;
    font-size: 1.1rem;
    font-family: "Times New Roman", Times, serif;
    opacity: 0.7;
}

.section-subtitle::before {
    content: '// ';
    color: var(--terminal-green-dark);
}

/* ========== 通用动画 ========== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes glow {

    0%,
    100% {
        text-shadow: 0 0 10px rgba(var(--glow-rgb), 0.8),
            0 0 20px rgba(var(--glow-rgb), 0.5);
    }

    50% {
        text-shadow: 0 0 20px rgba(var(--glow-rgb), 1),
            0 0 30px rgba(var(--glow-rgb), 0.7);
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

/* ========== 滚动条样式 ========== */
::-webkit-scrollbar {
    width: 10px;
    background: #e6f2ff;
}

::-webkit-scrollbar-track {
    background: #d6e9ff;
    border: 1px solid var(--terminal-green-dark);
}

::-webkit-scrollbar-thumb {
    background: transparent;
    border: 2px solid var(--terminal-green);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--terminal-green-dark);
    border-color: var(--terminal-green-bright);
}

/* ========== 选中文本样式 ========== */
::selection {
    background: var(--terminal-green);
    color: var(--terminal-bg);
}

::-moz-selection {
    background: var(--terminal-green);
    color: var(--terminal-bg);
}

/* ========== 响应式设计 ========== */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-primary);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        box-shadow: 0 2px 0 var(--terminal-green);
        border-top: 2px solid var(--terminal-green);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .mobile-menu-toggle {
        display: block;
    }

    .section-title {
        font-size: 2rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
        /* Slightly tighter padding on mobile */
    }

    .nav-container {
        padding: 0.75rem 15px;
    }

    .nav-logo a {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.75rem;
        letter-spacing: 2px;
    }

    .section-subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.5rem;
        letter-spacing: 1px;
    }

    .btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }
}

/* ========== 自定义光标样式 ========== */
/* 可交互元素悬停时的光标 */
a,
button,
.btn,
input,
textarea,
select,
[role="button"],
[onclick] {
    cursor: var(--cursor-pointer);
}

/* 文本选择光标 */
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    cursor: var(--cursor-text);
}

/* 禁用状态光标 */
button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

/* ==================== 悬浮控制台 (Floating Control Center) ==================== */
.floating-controls {
    position: fixed;
    bottom: 40px;
    left: 40px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.control-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    /* 圆形按钮，更符合现代人体工学 */
    background-color: var(--control-bg);
    color: var(--control-color);
    border: 2px solid var(--control-border);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
}

.control-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px var(--control-color);
    background-color: var(--control-color);
    color: var(--bg-primary);
}

/* 菜单按钮状态切换 */
#menuTrigger .icon-state-normal,
#menuTrigger .icon-state-hover {
    position: absolute;
    transition: all 0.4s ease;
}

#menuTrigger .icon-state-hover {
    opacity: 0;
    transform: rotate(-180deg) scale(0.5);
}

#menuTrigger:hover .icon-state-normal {
    opacity: 0;
    transform: rotate(180deg) scale(0.5);
}

#menuTrigger:hover .icon-state-hover {
    opacity: 1;
    transform: rotate(0) scale(1);
}

/* 回到顶部按钮 */
#backToTop {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: all 0.4s ease;
}

#backToTop.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* ==================== 双模态侧边栏 (Hybrid Sidebar) ==================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--sidebar-bg);
    backdrop-filter: var(--sidebar-backdrop);
    -webkit-backdrop-filter: var(--sidebar-backdrop);
    border-right: var(--sidebar-border);
    box-shadow: var(--sidebar-shadow);
    z-index: 2001;
    transform: translateX(-100%);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    padding: 2rem;
    overflow-y: auto;
}

.sidebar.sidebar-visible {
    transform: translateX(0);
}

/* 侧边栏头部 */
.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--control-color);
}

.sidebar-title {
    font-family: "Times New Roman", Times, serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--control-color);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.sidebar-close {
    background: none;
    border: none;
    color: var(--control-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.sidebar-close:hover {
    transform: rotate(90deg);
}

/* 侧边栏导航 */
.sidebar-menu {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.sidebar-link {
    text-decoration: none;
    color: var(--text-primary);
    font-family: "Times New Roman", Times, serif;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
    border: 1px solid transparent;
}

.sidebar-link i {
    width: 25px;
    text-align: center;
}

.sidebar-link:hover {
    background-color: rgba(var(--glow-rgb), 0.1);
    color: var(--control-color);
    transform: translateX(10px);
    border-color: var(--control-color);
    box-shadow: 0 0 15px rgba(var(--glow-rgb), 0.2);
}

/* Light Mode 适配 */
[data-theme="light"] .sidebar-link:hover {
    background-color: rgba(0, 0, 0, 0.05);
    border-color: var(--accent-color);
    color: var(--accent-color);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* 侧边栏底部 */
.sidebar-footer {
    margin-top: auto;
    padding-top: 2rem;
    border-top: 1px solid rgba(128, 128, 128, 0.3);
}

.sidebar-theme-toggle {
    display: flex;
    align-items: center;
    gap: 1rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.3s ease;
    padding: 0.5rem;
}

.sidebar-theme-toggle:hover {
    color: var(--control-color);
}

/* ==================== 响应式适配 ==================== */
@media (max-width: 768px) {
    .floating-controls {
        bottom: 20px;
        left: 20px;
    }

    .control-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    .sidebar {
        width: 85%;
        max-width: 320px;
    }
}