/* 全局样式 */
:root {
    --primary-color: #FF385C;
    --secondary-color: #4361EE;
    --accent-color: #3A0CA3;
    --text-color: #333333;
    --light-text: #666666;
    --bg-color: #F8F9FA;
    --card-bg: #FFFFFF;
    --border-color: #EEEEEE;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    padding: 2rem 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 0 0 20px 20px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 新增头部顶部样式 */
.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.user-actions {
    display: flex;
    gap: 1rem;
}

.auth-link {
    color: white;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1.2rem;
    border-radius: 50px;
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.auth-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.auth-link.register {
    background-color: white;
    color: var(--primary-color);
    border: none;
}

.auth-link.register:hover {
    background-color: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.subtitle {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.date-display {
    font-size: 1rem;
    background-color: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    display: inline-block;
}

/* 主要内容区域 */
main {
    display: flex;
    flex: 1;
    gap: 2rem;
    margin-bottom: 2rem;
}

/* 热搜榜单区域 */
.hot-search-container {
    flex: 0 0 380px;
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.platform-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    flex: 1;
    padding: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--light-text);
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.tab-btn i {
    margin-right: 6px;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
}

.tab-btn:hover:not(.active) {
    background-color: rgba(0, 0, 0, 0.03);
}

.hot-search-list {
    flex: 1;
    overflow-y: auto;
    padding: 1rem 0;
}

/* 热搜项目样式 */
.hot-search-item {
    display: flex;
    align-items: center;
    padding: 0.8rem 1.2rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
}

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

.hot-search-item:hover {
    background-color: rgba(0, 0, 0, 0.03);
}

.hot-search-item.selected {
    background-color: rgba(67, 97, 238, 0.1);
    border-left: 4px solid var(--secondary-color);
}

.rank {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--light-text);
    width: 36px;
    text-align: center;
}

.rank.top1 {
    color: #FF385C;
}

.rank.top2 {
    color: #FF8A00;
}

.rank.top3 {
    color: #FFB100;
}

.hot-search-content {
    flex: 1;
}

.title {
    font-weight: 500;
    margin-bottom: 0.3rem;
}

.hot-index {
    font-size: 0.8rem;
    color: var(--light-text);
    display: flex;
    align-items: center;
}

.hot-icon {
    color: var(--primary-color);
    margin-right: 4px;
}

/* 内容生成区域 */
.content-generation {
    flex: 1;
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow);
    padding: 2rem;
    overflow-y: auto;
}

.empty-state {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--light-text);
    padding: 2rem;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.empty-state h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.empty-state p {
    max-width: 400px;
}

/* AI功能特性样式 */
.ai-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 2rem;
    max-width: 500px;
}

.ai-feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background-color: rgba(67, 97, 238, 0.05);
    padding: 1.2rem;
    border-radius: 12px;
    transition: var(--transition);
    width: 140px;
}

.ai-feature:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(67, 97, 238, 0.1);
}

.ai-feature i {
    font-size: 1.8rem;
    margin-bottom: 0.8rem;
    color: var(--secondary-color);
}

.ai-feature span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
    line-height: 1.4;
}

/* 生成内容增强样式 */
.generated-content {
    animation: fadeIn 0.5s ease;
}

.generated-content h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
    line-height: 1.3;
}

.content-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.content-image:hover {
    transform: scale(1.01);
}

.content-text {
    line-height: 1.8;
    font-size: 1.05rem;
}

.content-text p {
    margin-bottom: 1.2rem;
    text-align: justify;
}

/* 加载状态 */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--light-text);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

/* 生成中状态 */
.generating {
    text-align: center;
    padding: 3rem 1rem;
}

.generating h3 {
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.progress-bar {
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    width: 0%;
    animation: progress 3s ease-in-out infinite;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal-content {
    background-color: var(--card-bg);
    border-radius: 16px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.3s ease;
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 1.8rem;
    cursor: pointer;
    color: var(--light-text);
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--primary-color);
}

.modal-body {
    padding: 2rem;
}

/* 页脚样式 */
footer {
    text-align: center;
    padding: 1.5rem 0;
    color: var(--light-text);
    font-size: 0.9rem;
}

/* 动画 */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes progress {
    0% { width: 0%; }
    10% { width: 20%; }
    30% { width: 40%; }
    50% { width: 60%; }
    70% { width: 80%; }
    90% { width: 95%; }
    100% { width: 98%; }
}

/* 响应式设计 */
@media (max-width: 960px) {
    main {
        flex-direction: column;
    }
    
    .hot-search-container {
        flex: 0 0 auto;
    }
    
    .content-generation {
        padding: 1.5rem;
    }
    
    /* 添加头部响应式样式 */
    .header-top {
        flex-direction: column;
        gap: 1rem;
    }
    
    h1 {
        margin-bottom: 0;
    }
}

@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .platform-tabs {
        flex-wrap: wrap;
    }
    
    .tab-btn {
        padding: 0.8rem 0.5rem;
        font-size: 0.85rem;
    }
    
    .content-generation {
        padding: 1.2rem;
    }
    
    .ai-features {
        flex-direction: column;
    }
    
    .ai-feature {
        width: 100%;
        padding: 1rem;
    }
    
    .ai-feature i {
        font-size: 1.5rem;
    }
    
    .content-image {
        height: 200px;
    }
    
    /* 添加头部响应式样式 */
    .user-actions {
        width: 100%;
        justify-content: center;
    }
    
    .auth-link {
        padding: 0.4rem 1rem;
        font-size: 0.85rem;
    }
}

/* API通知样式 */
.api-notice {
    font-size: 0.8rem;
    margin-top: 0.5rem;
    opacity: 0.7;
}

/* 错误状态样式 */
.error-state {
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--light-text);
    padding: 2rem;
}

.error-state i {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.retry-btn {
    margin-top: 1.5rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.retry-btn i {
    margin-right: 8px;
}

.retry-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(67, 97, 238, 0.2);
}

/* 链接样式 */
.external-link {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.external-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

/* API状态指示器 */
.api-status {
    display: inline-flex;
    align-items: center;
    font-size: 0.8rem;
    margin-left: 8px;
}

.api-status.online {
    color: #2ecc71;
}

.api-status.offline {
    color: var(--primary-color);
}

.api-status i {
    margin-right: 4px;
}

/* 用户信息和退出按钮样式 */
.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.username {
    color: white;
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
}

.username i {
    margin-right: 0.5rem;
    font-size: 1.1rem;
}

.logout-btn {
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background-color: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

.logout-btn i {
    margin-right: 0.5rem;
}

.logout-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}