/* 重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary-color: #1a1a1a;
    --accent-color: #d4af37;
    --light-bg: #f8f8f8;
    --dark-bg: #333;
    --text-color: #333;
    --light-text: #fff;
    --transition: all 0.3s ease;
}

body {
    background-color: var(--light-bg);
    color: var(--text-color);
    overflow-x: hidden;
    line-height: 1.6;
}

/* 头部导航 */
header {
    position: fixed;
    top: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    padding: 15px 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

header.scrolled {
    padding: 10px 5%;
    background-color: rgba(0, 0, 0, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--light-text);
    display: flex;
    align-items: center;
}

.logo span {
    color: var(--accent-color);
    margin-left: 5px;
}

.logo i {
    margin-right: 10px;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    transition: var(--transition);
    position: relative;
}

nav ul li a:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: var(--transition);
}

nav ul li a:hover {
    color: var(--accent-color);
}

nav ul li a:hover:after {
    width: 100%;
}

.mobile-menu {
    display: none;
    font-size: 24px;
    color: var(--light-text);
    cursor: pointer;
}

/* 英雄区域 */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1492684223066-81342ee5ff30?auto=format&fit=crop&q=80&w=2070') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 0 5%;
    position: relative;
}

.hero-content {
    max-width: 800px;
    color: var(--light-text);
    animation: fadeInUp 1s ease;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    font-weight: 300;
}

.btn {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--primary-color);
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn:hover {
    background-color: #c19c29;
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    margin-left: 15px;
}

.btn-outline:hover {
    background-color: var(--accent-color);
    color: var(--primary-color);
}

/* 通用部分样式 */
.section {
    padding: 100px 5%;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 60px;
    color: #666;
    font-weight: 400;
    line-height: 1.6;
}

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

/* 关于我们页面样式 */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-top: 40px;
}

.about-text {
    flex: 1;
}

.about-img {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.about-img img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

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

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 25px;
    line-height: 1.8;
    color: #555;
}

/* 服务项目页面样式 */
.services {
    background-color: var(--primary-color);
    color: var(--light-text);
}

.services .section-title,
.services .section-subtitle {
    color: var(--light-text);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.service-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 40px 30px;
    transition: var(--transition);
    text-align: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card:hover {
    background-color: rgba(212, 175, 55, 0.1);
    transform: translateY(-10px);
}

.service-icon {
    font-size: 50px;
    color: var(--accent-color);
    margin-bottom: 20px;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.service-card p {
    line-height: 1.6;
    color: #ddd;
    margin-bottom: 20px;
}

.price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
    margin: 15px 0;
}

.feature-list {
    list-style: none;
    text-align: left;
    margin-top: 20px;
}

.feature-list li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
}

.feature-list li:before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--accent-color);
    position: absolute;
    left: 0;
}

/* 作品集页面样式 */
.portfolio-filter {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 20px;
    background: none;
    border: 1px solid #ddd;
    border-radius: 30px;
    color: #666;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn.active, .filter-btn:hover {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: #fff;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.portfolio-item {
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    height: 300px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.portfolio-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.portfolio-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    padding: 20px;
    text-align: center;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item:hover .portfolio-img {
    transform: scale(1.1);
}

.portfolio-overlay h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.portfolio-overlay p {
    color: #ddd;
    font-size: 0.9rem;
}

/* 团队成员样式 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.team-member {
    text-align: center;
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.member-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.member-info {
    padding: 20px;
}

.member-info h3 {
    font-size: 1.4rem;
    margin-bottom: 5px;
}

.member-role {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 10px;
    display: block;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 15px;
}

.social-links a {
    color: #666;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--accent-color);
}

/* 联系页面样式 */
.contact {
    background-color: #f1f1f1;
}

.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    margin-top: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.contact-item {
    display: flex;
    gap: 15px;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background-color: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #fff;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
}

.contact-details p {
    color: #666;
    line-height: 1.6;
}

.contact-form {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #444;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--accent-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

/* 页脚样式 */
footer {
    background-color: var(--primary-color);
    color: var(--light-text);
    padding: 70px 5% 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 1.4rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--accent-color);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #bbb;
    text-decoration: none;
    transition: var(--transition);
    display: block;
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.footer-text {
    color: #aaa;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #fff;
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--accent-color);
    transform: translateY(-5px);
}

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

/* 模态框样式 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
}

.modal-img {
    max-height: 80vh;
    max-width: 100%;
    border-radius: 5px;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: rgba(0, 0, 0, 0.95);
        flex-direction: column;
        padding: 20px 0;
        text-align: center;
    }
    
    nav ul.show {
        display: flex;
    }
    
    nav ul li {
        margin: 15px 0;
    }
    
    .mobile-menu {
    display: none;
    font-size: 24px;
    color: var(--light-text);
    cursor: pointer;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .mobile-menu {
        display: block;
    }
    
    nav ul {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: rgba(0, 0, 0, 0.95);
        flex-direction: column;
        padding: 20px 0;
        text-align: center;
    }
    
    nav ul.show {
        display: flex;
    }
    
    nav ul li {
        margin: 15px 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.1rem;
    }
    
    .btn {
        padding: 10px 20px;
    }
    
    .section {
        padding: 70px 5%;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .portfolio-filter {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

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

/* 作品分类标签 */
.portfolio-tag {
    display: inline-block;
    background-color: rgba(0, 0, 0, 0.7);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-top: 10px;
}

/* 表单样式增强 */
.contact-form .btn {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    margin-top: 10px;
}

.form-group {
    position: relative;
}

.form-group .error {
    color: #ff4d4d;
    font-size: 0.85rem;
    position: absolute;
    bottom: -20px;
    left: 0;
    display: none;
}

/* 加载动画 */
.loader {
    display: none;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* 页面过渡效果 */
.page-transition {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--accent-color);
    z-index: 9999;
    transform: scaleY(0);
    transform-origin: top;
    transition: transform 0.5s ease;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--accent-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 100;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    background-color: #c19c29;
}

/* 页脚样式增强 */
.footer-column {
    margin-bottom: 30px;
}

.footer-newsletter {
    display: flex;
    margin-top: 15px;
}

.footer-newsletter input {
    flex: 1;
    padding: 10px;
    border: none;
    border-radius: 4px 0 0 4px;
}

.footer-newsletter button {
    background: var(--accent-color);
    color: #fff;
    border: none;
    padding: 0 15px;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

/* 服务卡片图标样式 */
.service-icon i {
    background: rgba(255, 255, 255, 0.1);
    width: 80px;
    height: 80px;
    line-height: 80px;
    border-radius: 50%;
    display: inline-block;
}

/* 团队成员社交图标样式 */
.social-links a i {
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover i {
    transform: scale(1.2);
}

/* 作品集网格悬停效果增强 */
.portfolio-item .portfolio-overlay {
    opacity: 0;
    transition: opacity 0.3s ease;
}

.portfolio-item:hover .portfolio-overlay {
    opacity: 1;
}

.portfolio-item .portfolio-overlay * {
    transform: translateY(20px);
    transition: transform 0.3s ease;
    opacity: 0;
}

.portfolio-item:hover .portfolio-overlay * {
    transform: translateY(0);
    opacity: 1;
    transition-delay: 0.1s;
}

/* 导航活动状态 */
nav ul li a.active {
    color: var(--accent-color);
}

nav ul li a.active:after {
    width: 100%;
}