/* Reset some default browser styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Gemini主题色彩 */
:root {
    --gemini-blue: #4285F4;
    --gemini-green: #34A853;
    --gemini-yellow: #FBBC05;
    --gemini-red: #EA4335;
    --gemini-purple: #A142F4;
    --gemini-dark: #202124;
    --gemini-light: #F8F9FA;
    --gemini-gray: #5F6368;
    --gemini-text: #202124;
    --gemini-text-light: #5F6368;
    --gemini-border: #DADCE0;
    --gemini-bg: #FFFFFF;
    --gemini-bg-light: #F8F9FA;
    --gemini-bg-dark: #E8EAED;
    --gemini-gradient: linear-gradient(135deg, var(--gemini-blue), var(--gemini-purple));
}

body {
    font-family: 'Google Sans', 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
    line-height: 1.6;
    color: var(--gemini-text);
    background-color: var(--gemini-bg);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(66, 133, 244, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 30%, rgba(52, 168, 83, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 50% 70%, rgba(251, 188, 5, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 20% 90%, rgba(234, 67, 53, 0.05) 0%, transparent 20%);
    background-attachment: fixed;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Header styles */
.header {
    background: var(--gemini-gradient);
    color: #fff;
    padding: 32px 0;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -10%;
    width: 120%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        rgba(255, 255, 255, 0.05),
        rgba(255, 255, 255, 0.05) 10px,
        rgba(255, 255, 255, 0.1) 10px,
        rgba(255, 255, 255, 0.1) 20px
    );
    animation: movePattern 20s linear infinite;
}

@keyframes movePattern {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(50px, 50px);
    }
}

.header h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
    font-weight: 500;
    position: relative;
    z-index: 1;
}

.header p {
    font-size: 1.2rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Navigation styles */
.navbar {
    background-color: var(--gemini-bg);
    border-bottom: 1px solid var(--gemini-border);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

.nav-links {
    display: flex;
    list-style: none;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.nav-links li {
    margin: 0 8px 0 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--gemini-text);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
    display: block;
    position: relative;
    overflow: hidden;
}

.nav-links a::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gemini-gradient);
    transition: left 0.3s ease;
    z-index: -1;
}

.nav-links a:hover::before {
    left: 0;
}

.nav-links a:hover {
    color: white;
}

.nav-links a.active {
    background-color: var(--gemini-blue);
    color: white;
}

/* 搜索框样式 */
.search-container {
    display: flex;
    justify-content: center;
    gap: 8px;
}

#search-input {
    padding: 8px 12px;
    border: 1px solid var(--gemini-border);
    border-radius: 6px;
    width: 300px;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.2s;
}

#search-input:focus {
    outline: none;
    border-color: var(--gemini-blue);
    box-shadow: 0 0 0 2px rgba(66, 133, 244, 0.2);
}

#search-button {
    padding: 8px 16px;
    background-color: var(--gemini-blue);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

#search-button:hover {
    background-color: #3367d6;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(66, 133, 244, 0.3);
}

/* Main content styles */
.main-content {
    display: flex;
    padding: 32px 0;
    gap: 24px;
}

/* Sidebar styles */
.sidebar {
    width: 25%;
    padding-right: 24px;
    border-right: 1px solid var(--gemini-border);
}

.sidebar-nav {
    position: sticky;
    top: 60px;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 4px;
}

.sidebar-nav a {
    text-decoration: none;
    color: var(--gemini-text);
    display: block;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.2s;
    font-size: 0.95rem;
    position: relative;
}

.sidebar-nav a::before {
    content: "✦";
    color: var(--gemini-blue);
    margin-right: 8px;
    transition: transform 0.2s;
}

.sidebar-nav a:hover::before {
    transform: rotate(45deg);
}

.sidebar-nav a:hover {
    background-color: var(--gemini-bg-light);
    color: var(--gemini-blue);
    padding-left: 16px;
}

.sidebar-nav a.active {
    background-color: var(--gemini-blue);
    color: #fff;
}

.sidebar-nav a.active::before {
    color: white;
}

/* Content area styles */
.content {
    width: 75%;
    padding-left: 24px;
}

.content h2 {
    font-size: 1.8rem;
    margin: 24px 0 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--gemini-border);
    color: var(--gemini-dark);
    font-weight: 500;
    position: relative;
}

.content h2::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--gemini-gradient);
}

.content h3 {
    font-size: 1.4rem;
    margin: 20px 0 12px;
    color: var(--gemini-dark);
    font-weight: 500;
    position: relative;
    padding-left: 20px;
}

.content h3::before {
    content: "✦";
    color: var(--gemini-blue);
    position: absolute;
    left: 0;
    top: 0;
}

.content p {
    margin-bottom: 16px;
    color: var(--gemini-text-light);
    font-size: 1rem;
    line-height: 1.7;
}

.content ul, .content ol {
    margin-bottom: 16px;
    padding-left: 24px;
}

.content li {
    margin-bottom: 8px;
    color: var(--gemini-text-light);
}

.content pre {
    background-color: var(--gemini-bg-light);
    padding: 16px;
    overflow-x: auto;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid var(--gemini-border);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    position: relative;
}

.content pre::before {
    content: "✦";
    color: var(--gemini-blue);
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 1.2rem;
}

.content code {
    font-family: 'Roboto Mono', 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.9rem;
    background-color: var(--gemini-bg-dark);
    padding: 2px 4px;
    border-radius: 4px;
    color: var(--gemini-dark);
}

.content pre code {
    background-color: transparent;
    padding: 0;
    color: inherit;
}

/* Gemini元素装饰 */
.gemini-element {
    position: relative;
    padding-left: 20px;
    transition: transform 0.2s ease;
}

.gemini-element::before {
    content: "✦";
    color: var(--gemini-blue);
    position: absolute;
    left: 0;
    top: 0;
    transition: transform 0.2s ease;
}

.gemini-element:hover {
    transform: translateX(5px);
}

.gemini-element:hover::before {
    transform: rotate(45deg);
}

/* Footer styles */
.footer {
    background-color: var(--gemini-bg-light);
    border-top: 1px solid var(--gemini-border);
    padding: 24px 0;
    text-align: center;
    margin-top: 32px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gemini-gradient);
}

.footer p {
    color: var(--gemini-text-light);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 8px 16px;
    background-color: var(--gemini-blue);
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.3s ease;
}

.btn:hover::before {
    left: 0;
}

.btn:hover {
    background-color: #3367d6;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(66, 133, 244, 0.3);
}

/* 卡片样式 */
.card {
    background-color: var(--gemini-bg);
    border: 1px solid var(--gemini-border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    transition: all 0.2s;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gemini-gradient);
    opacity: 0;
    transition: opacity 0.2s;
}

.card:hover {
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    transform: translateY(-2px);
}

.card:hover::before {
    opacity: 1;
}

.card h3 {
    margin-top: 0;
}

/* 提示框样式 */
.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    position: relative;
    overflow: hidden;
}

.alert::before {
    content: "✦";
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 1.2rem;
}

.alert-info {
    background-color: #e8f0fe;
    border-left: 4px solid var(--gemini-blue);
    color: #1967d2;
}

.alert-info::before {
    color: var(--gemini-blue);
}

.alert-warning {
    background-color: #fef7e0;
    border-left: 4px solid var(--gemini-yellow);
    color: #f9ab00;
}

.alert-warning::before {
    color: var(--gemini-yellow);
}

.alert-success {
    background-color: #e6f4ea;
    border-left: 4px solid var(--gemini-green);
    color: #137333;
}

.alert-success::before {
    color: var(--gemini-green);
}

/* 搜索结果高亮 */
.search-highlight {
    background-color: yellow;
    padding: 2px 4px;
    border-radius: 3px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    
    .sidebar, .content {
        width: 100%;
        padding: 0;
    }
    
    .sidebar {
        border-right: none;
        border-bottom: 1px solid var(--gemini-border);
        padding-bottom: 24px;
        margin-bottom: 24px;
    }
    
    .header h1 {
        font-size: 2rem;
    }
    
    .header p {
        font-size: 1rem;
    }
    
    .nav-links {
        justify-content: flex-start;
    }
    
    .nav-links li {
        margin: 4px 4px 0 0;
    }
    
    .nav-links a {
        font-size: 0.9rem;
        padding: 6px 10px;
    }
    
    .search-container {
        margin-top: 12px;
    }
    
    #search-input {
        width: 200px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --gemini-text: #e8eaed;
        --gemini-text-light: #9aa0a6;
        --gemini-border: #5f6368;
        --gemini-bg: #202124;
        --gemini-bg-light: #303134;
        --gemini-bg-dark: #3c4043;
    }
    
    .navbar {
        background-color: rgba(32, 33, 36, 0.9);
    }
    
    .content pre {
        background-color: var(--gemini-bg-light);
        border-color: var(--gemini-border);
    }
    
    .content code {
        background-color: var(--gemini-bg-dark);
    }
    
    .card {
        background-color: var(--gemini-bg-light);
        border-color: var(--gemini-border);
    }
    
    .alert-info {
        background-color: #1a237e;
        color: #bbdefb;
    }
    
    .alert-warning {
        background-color: #7f6000;
        color: #fff9c4;
    }
    
    .alert-success {
        background-color: #1b5e20;
        color: #c8e6c9;
    }
}