/* ==========================================================================
   变量定义
   ========================================================================== */

/* --- 通用变量定义 --- */
:root {
    /* 颜色方案 */
    --primary-color: #333333;
    --primary-rgb: 51, 51, 51;
    --secondary-color: #555555;
    --accent-color: #777777;
    
    /* 背景和容器 */
    --bg-color: #0d1117;
    --text-color: #c9d1d9;
    --container-bg: rgba(22, 27, 34, 0.7);
    --border-color: rgba(51, 51, 51, 0.2);
    
    /* 阴影和高亮 */
    --shadow-color: rgba(51, 51, 51, 0.15);
    --highlight-bg: rgba(255, 255, 255, 0.15);
    --h1-after-shadow: rgba(51, 51, 51, 0.4);
    
    /* 导航和页脚 */
    --navbar-text-color: #333333;
    --footer-text-color: #fff;
    
    /* 链接样式 */
    --link-color: #888888;
    --link-hover-color: #aaaaaa;
    --link-glow: rgba(85, 85, 85, 0.5);
    --link-hover-shadow: rgba(51, 51, 51, 0.5);
    --link-hover-text-shadow: rgba(255, 255, 255, 0.7);
    
    /* 图片效果 */
    --img-shadow: rgba(51, 51, 51, 0.2);
    --img-hover-shadow: rgba(51, 51, 51, 0.3);
    --img-border-color: rgba(51, 51, 51, 0.2);
    
    /* 背景渐变 */
    --body-gradient-color: rgba(51, 51, 51, 0.1);
    --body-before-gradient-color: rgba(85, 85, 85, 0.08);
    --h3-gradient-end-color: rgba(51, 51, 51, 0.3);
    
    /* 应用图标 */
    --app-icon-blend-mode: normal;
    --app-icon-filter: none;
}

/* --- 亮色主题变量覆盖 --- */
@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #ffffff;
        --text-color: #24292f;
        --accent-color: #333333;
        --container-bg: rgba(255, 255, 255, 0.9);
        --link-hover-shadow: rgba(51, 51, 51, 0.7);
        --link-hover-text-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
        --h1-after-shadow: rgba(51, 51, 51, 0.2);
        --img-shadow: rgba(51, 51, 51, 0.15);
        --img-hover-shadow: rgba(51, 51, 51, 0.25);
        --img-border-color: rgba(51, 51, 51, 0.15);
        --body-gradient-color: rgba(51, 51, 51, 0.08);
        --body-before-gradient-color: rgba(85, 85, 85, 0.06);
        --h3-gradient-end-color: #555555;
        --link-color: #333333;
        --link-hover-color: #555555;
        --link-glow: rgba(51, 51, 51, 0.2);
        --app-icon-blend-mode: multiply;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --app-icon-blend-mode: screen;
        --app-icon-filter: drop-shadow(0 0 8px rgba(var(--primary-rgb), 0.3));
    }
}

/* ==========================================================================
   基础样式
   ========================================================================== */

body {
    font-family: 'Roboto', 'Arial', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    background-image: radial-gradient(circle at 50% 50%, var(--body-gradient-color), transparent 50%);
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, var(--body-before-gradient-color), transparent 70%);
    pointer-events: none;
    z-index: -1;
}

@media (prefers-color-scheme: dark) {
    body, html { 
        background-color: var(--bg-color) !important; 
    }
}

/* ==========================================================================
   动画定义
   ========================================================================== */

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(var(--primary-rgb), 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(var(--primary-rgb), 0); }
    100% { box-shadow: 0 0 0 0 rgba(var(--primary-rgb), 0); }
}

@keyframes safariThemeRefresh {
    0% { opacity: 0.01; }
    50% { opacity: 0.012; }
    100% { opacity: 0.01; }
}

/* ==========================================================================
   导航栏
   ========================================================================== */

#navbar-container {
    background: transparent;
    color: var(--navbar-text-color);
    padding: 8px 20px;
    box-shadow: none;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

#navbar-container nav ul {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 30px;
    max-width: 800px;
}

#navbar-container nav ul li {
    margin: 0;
    padding-left: 0;
}

#navbar-container nav ul li::before {
    content: none;
    display: none;
}

#navbar-container nav ul li a {
    color: var(--navbar-text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 25px;
    transition: all 0.3s ease;
    letter-spacing: 1px;
    position: relative;
    overflow: hidden;
    text-shadow: none;
    background: transparent;
    display: block;
}

#navbar-container nav ul li a::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--highlight-bg);
    border-radius: 25px;
    transition: all 0.3s ease;
    opacity: 0;
    z-index: -1;
}

#navbar-container nav ul li a:hover {
    color: var(--navbar-text-color);
    box-shadow: none;
    text-shadow: none;
}

#navbar-container nav ul li a:hover::before {
    left: 0;
    opacity: 0.7;
}

/* ==========================================================================
   标题样式
   ========================================================================== */

h1, h2, h3 {
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
    margin-top: 30px;
    font-weight: 700;
    letter-spacing: 1px;
    text-shadow: 0 1px 2px var(--shadow-color);
    color: var(--primary-color); /* Safari 备用 */
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    position: relative;
    text-align: center;
}

h1::after {
    content: "";
    display: block;
    width: 100px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    margin: 15px auto;
    border-radius: 2px;
    box-shadow: 0 2px 10px var(--h1-after-shadow);
}

h3 {
    margin-top: 35px;
    text-align: left;
    padding-left: 20px;
    border-left: 4px solid var(--primary-color);
    font-size: 1.3rem;
    background: linear-gradient(90deg, var(--primary-color), var(--h3-gradient-end-color));
    -webkit-background-clip: text;
    background-clip: text;
}

/* 下载部分标题样式 */
.container h1:has(+ p > a[href*="apps.apple.com"]),
.container h1:has(+ a[href*="apps.apple.com"]) {
    text-align: left;
    padding-left: 20px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.container h1:has(+ p > a[href*="apps.apple.com"])::after,
.container h1:has(+ a[href*="apps.apple.com"])::after {
    margin-left: 0;
    margin-right: auto;
}

/* ==========================================================================
   容器样式
   ========================================================================== */

.container {
    max-width: 1000px;
    margin: 20px auto;
    padding: 20px;
    background: var(--container-bg);
    border-radius: 10px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    box-shadow: 0 5px 20px var(--shadow-color);
}

/* ==========================================================================
   列表样式
   ========================================================================== */

ul {
    margin: 20px auto;
    padding: 0 20px;
    max-width: 800px;
    list-style-type: none;
}

ul li {
    margin-bottom: 15px;
    position: relative;
    padding-left: 20px;
    line-height: 1.5;
}

ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent-color);
    font-size: 1.2em;
    line-height: 1.5;
}

/* ==========================================================================
   图片样式
   ========================================================================== */

img {
    display: block;
    margin: 30px auto;
    max-width: 90%;
    height: auto;
    border-radius: 0;
    box-shadow: none;
    border: none;
    background-color: transparent;
    transition: transform 0.3s ease;
}

img:hover {
    transform: translateY(-5px);
    box-shadow: none;
}

a img {
    max-width: 200px;
    margin: 15px auto;
    border: none;
    box-shadow: none;
    background-color: transparent;
}

a img:hover {
    transform: scale(1.05) translateY(-5px);
    box-shadow: none;
}

/* 应用图标通用样式 */
img[src$=".png"][alt*="app"],
img[src*="app_icon"],
img[alt*="应用"],
img[alt*="icon"] {
    display: block;
    margin: 30px auto;
    max-width: 128px;
    height: auto;
    border-radius: 22%;
    border: none;
    background-color: transparent;
    transition: all 0.3s ease;
    mix-blend-mode: var(--app-icon-blend-mode);
    filter: var(--app-icon-filter);
}

/* ==========================================================================
   页脚样式
   ========================================================================== */

footer {
    text-align: center;
    padding: 30px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    color: var(--footer-text-color);
    margin-top: 60px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 -2px 10px var(--shadow-color);
}

footer::before {
    content: "";
    position: absolute;
    top: -10px;
    left: 0;
    width: 100%;
    height: 10px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 0 20px var(--shadow-color);
}

/* ==========================================================================
   引用块样式
   ========================================================================== */

blockquote {
    margin: 30px auto;
    padding: 20px 30px;
    max-width: 800px;
    background: var(--container-bg);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 8px 8px 0;
    position: relative;
    font-style: italic;
    color: var(--text-color);
    box-shadow: 0 3px 15px var(--shadow-color);
    transition: all 0.3s ease;
}

blockquote::before {
    content: "";
    position: absolute;
    top: 10px;
    left: 10px;
    font-size: 3em;
    font-family: Georgia, serif;
    color: var(--primary-color);
    opacity: 0.3;
    line-height: 1;
}

blockquote:hover {
    border-left-color: var(--secondary-color);
    box-shadow: 0 5px 20px var(--shadow-color);
    transform: translateY(-2px);
}

/* ==========================================================================
   链接样式
   ========================================================================== */

a {
    color: var(--link-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
    padding: 0 2px;
}

a:hover {
    color: var(--link-hover-color);
    text-shadow: 0 0 8px var(--link-glow);
}

a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0.7;
    transition: width 0.3s ease;
    border-radius: 2px;
}

a:hover::after {
    width: 100%;
    box-shadow: 0 0 10px var(--link-hover-shadow);
}

#navbar-container nav ul li a::after,
a:has(> img)::after,
a[href*="apps.apple.com"]::after {
    display: none !important;
    content: none !important;
    width: 0 !important;
    height: 0 !important;
    opacity: 0 !important;
}

a[href*="apps.apple.com"] {
    display: block;
    text-align: center;
    margin: 3px auto;
    border-bottom: none !important;
}

/* ==========================================================================
   媒体查询
   ========================================================================== */

/* --- 亮色主题样式 --- */
@media (prefers-color-scheme: light) {
    /* 页脚和引用块调整 */
    footer::before { 
        opacity: 0.5; 
    }
    
    blockquote {
        background: rgba(246, 248, 250, 0.9);
        box-shadow: 0 3px 15px rgba(51, 51, 51, 0.1);
    }
    
    blockquote:hover { 
        box-shadow: 0 5px 20px rgba(51, 51, 51, 0.15); 
    }
    
    /* 导航链接调整 */
    #navbar-container nav ul li a:hover {
        color: #fff;
        font-weight: 600;
    }
    
    #navbar-container nav ul li a:hover::before {
        background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        opacity: 0.9;
    }
    
    /* 链接样式调整 */
    a {
        border-bottom: 1px dotted rgba(230, 92, 0, 0.3);
    }
    
    a:hover {
        border-bottom-color: transparent;
    }
    
    a::after {
        opacity: 0.8;
        height: 1.5px;
    }
    
    /* 特殊链接调整 */
    a[href*="apps.apple.com"],
    a:has(img) {
        border-bottom: none !important;
    }
}

/* --- 暗色主题样式 --- */
@media (prefers-color-scheme: dark) {
    /* 标题样式调整 */
    h1, h2, h3 {
        background: linear-gradient(90deg, #aaaaaa, #ffffff);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
        text-shadow: 0 1px 3px rgba(255, 255, 255, 0.2);
    }
    
    h1::after {
        background: linear-gradient(90deg, #888888, #cccccc);
        box-shadow: 0 2px 10px rgba(255, 255, 255, 0.25);
    }
    
    h3 {
        border-left: 4px solid #888888;
        background: linear-gradient(90deg, #aaaaaa, #ffffff);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    
    /* 导航链接调整 */
    #navbar-container nav ul li a {
        color: #c9d1d9;
    }
    
    #navbar-container nav ul li a:hover {
        color: #ffffff;
    }
}

/* --- 响应式布局 --- */
@media (max-width: 768px) {
    #navbar-container nav ul {
        flex-direction: column;
        align-items: center;
    }

    #navbar-container nav ul li {
        margin-bottom: 10px;
    }

    h1 {
        font-size: 2rem;
    }

    .container {
        margin: 15px;
        padding: 15px;
    }
}

/* ==========================================================================
   浏览器兼容性
   ========================================================================== */

/* Safari 特定修复 */
@supports (-webkit-touch-callout: none) {
    body::after {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: -10;
        pointer-events: none;
        background: var(--bg-color);
        opacity: 0.01;
        animation: safariThemeRefresh 1s ease-in-out 0.1s;
    }
}

/* 无 backdrop-filter 支持的浏览器处理 */
@supports not ((backdrop-filter: blur(5px)) or (-webkit-backdrop-filter: blur(5px))) {
    #navbar-container {
        background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    }
    .container {
        background: var(--bg-color);
    }
}