/* ===== 全局样式 ===== */
body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    padding-top: 56px;
    color: #333;
}

/* ===== 导航栏 ===== */
.navbar {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-size: 1.5rem;
    letter-spacing: 1px;
}

.nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #ffc107 !important;
}

/* ===== 轮播图 ===== */
.banner-section {
    margin-top: -56px;
}

.banner-slide {
    height: 100vh;
    min-height: 500px;
    max-height: 800px;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.3) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-overlay .display-4 {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    animation: fadeInUp 1s ease;
}

.banner-overlay .lead {
    animation: fadeInUp 1s ease 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== 段落标题 ===== */
.section-title {
    font-weight: 700;
    font-size: 2.2rem;
    color: #2c3e50;
}

.title-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, #667eea 0%, #764ba2 100%);
    margin: 15px auto;
    border-radius: 2px;
}

/* ===== 个人简介 ===== */
.about-section {
    background: #fff;
}

.avatar-wrapper {
    position: relative;
    display: inline-block;
}

.avatar-img {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border: 5px solid #fff;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.avatar-img:hover {
    transform: scale(1.05);
}

.bio-text {
    font-size: 1.05rem;
    line-height: 1.8;
    color: #555;
}

/* ===== 技能标签 ===== */
.skills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.skill-tag:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

/* ===== 作品展示 ===== */
.works-section {
    background: #f8f9fa;
}

.work-card {
    border: none;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.work-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12) !important;
}

.work-image-wrapper {
    position: relative;
    overflow: hidden;
    height: 220px;
}

.work-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.work-card:hover .work-image {
    transform: scale(1.08);
}

.work-category-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.card-title {
    font-weight: 700;
    color: #2c3e50;
}

.card-text {
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ===== 技术标签 ===== */
.work-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tech-badge {
    display: inline-block;
    padding: 3px 10px;
    background: #e9ecef;
    color: #495057;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* ===== 联系方式 ===== */
.contact-section {
    background: #fff;
}

.contact-card {
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.contact-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
}

/* ===== 社交链接 ===== */
.social-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 20px;
    background: #f8f9fa;
    color: #333;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.social-link i {
    font-size: 1.2rem;
    margin-right: 6px;
}

/* ===== 页脚 ===== */
.footer {
    background: #1a1a2e;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .banner-slide {
        height: 70vh;
        min-height: 400px;
    }
    
    .banner-overlay .display-4 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .avatar-img {
        width: 160px;
        height: 160px;
    }
    
    .work-image-wrapper {
        height: 180px;
    }
    
    .social-link {
        display: inline-flex;
        margin-bottom: 8px;
    }
}

/* ===== 平滑滚动 ===== */
html {
    scroll-behavior: smooth;
}

/* ===== 滚动条美化 ===== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 4px;
}