/* styles_about.css */

/* 现代化样式 - About页面 */
:root {
    --primary-color: #007aff;
    --secondary-color: #5856d6;
    --text-color: #333;
    --light-bg: #f5f5f7;
    --card-bg: #ffffff;
    --border-radius: 12px;
    --transition: all 0.3s ease;
    --nav-height: 70px;
}

body.dark-mode {
    --text-color: #ffffff;
    --light-bg: #1a1a1a;
    --card-bg: #2c2c2c;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--light-bg);
}

/* 导航栏样式 */
.nav-wrapper {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    height: var(--nav-height);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    opacity: 0.8;
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary-color);
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 8px;
    border-radius: 50%;
    transition: var(--transition);
}

.theme-toggle:hover {
    background: rgba(0, 0, 0, 0.1);
}

/* 页脚样式 */
.footer {
    background: var(--card-bg);
    padding: 60px 0 20px;
    margin-top: 80px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 40px;
}

.footer-logo h3 {
    color: var(--primary-color);
    margin: 0 0 10px;
    font-size: 1.5rem;
}

.footer-logo p {
    color: var(--text-color);
    opacity: 0.8;
    margin: 0;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.footer-section h4 {
    color: var(--text-color);
    margin: 0 0 20px;
    font-size: 1.1rem;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul li a {
    color: var(--text-color);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    margin-top: 40px;
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

.footer-bottom p {
    color: var(--text-color);
    opacity: 0.6;
    margin: 0;
}

/* 主要内容区域 */
.about-container {
    max-width: 1200px;
    margin: 100px auto 50px;
    padding: 0 20px;
}

/* 英雄区域 */
.about-hero {
    text-align: center;
    padding: 80px 20px;
    background: var(--light-bg);
    border-radius: var(--border-radius);
    margin-bottom: 60px;
}

.about-hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: fadeInUp 0.8s ease;
}

.about-hero p {
    font-size: 1.2rem;
    color: var(--text-color);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    animation: fadeInUp 1s ease;
}

/* 团队卡片 */
.team-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin: 60px 0;
}

.team-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.team-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-size: 1.5rem;
}

.team-card p {
    color: var(--text-color);
    line-height: 1.6;
}

/* 目标和愿景部分 */
.vision-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin: 60px 0;
}

@media (max-width: 768px) {
    .vision-section {
        grid-template-columns: 1fr;
    }
}

.vision-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.vision-card:hover {
    transform: scale(1.02);
}

.vision-card h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.vision-card p {
    color: var(--text-color);
    line-height: 1.8;
}

/* 评论区样式 */
.comment-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    margin-top: 60px;
}

.comment-form textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-size: 1rem;
    transition: var(--transition);
}

.comment-form textarea:focus {
    border-color: var(--primary-color);
    outline: none;
}

.emoji-picker {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.emoji {
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.emoji:hover {
    transform: scale(1.2);
}

#submit-comment {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    transition: var(--transition);
}

#submit-comment:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .about-hero h1 {
        font-size: 2.5rem;
    }
    
    .about-hero p {
        font-size: 1rem;
    }
    
    .team-section {
        grid-template-columns: 1fr;
    }
    
    .vision-section {
        grid-template-columns: 1fr;
    }
}

/* 暗色模式适配 */
body.dark-mode .nav-wrapper {
    background: rgba(0, 0, 0, 0.8);
}

body.dark-mode .team-card,
body.dark-mode .vision-card,
body.dark-mode .comment-section {
    background: var(--card-bg);
}

body.dark-mode .comment-form textarea {
    background: #3a3a3a;
    border-color: #4a4a4a;
    color: #ffffff;
}

/* 响应式设计补充 */
@media (max-width: 768px) {
    .nav-content {
        padding: 0 15px;
    }

    .nav-links {
        display: none;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* 暗色模式补充 */
body.dark-mode {
    background-color: var(--light-bg);
}

body.dark-mode .nav-wrapper {
    background: rgba(0, 0, 0, 0.8);
}

body.dark-mode .footer {
    background: var(--card-bg);
}

body.dark-mode .footer-bottom {
    border-top-color: rgba(255, 255, 255, 0.1);
}

body.dark-mode .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}