/* 西安VR全景拍摄服务网站 - 主样式文件 */

/* 全局重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', '微软雅黑', Arial, sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    overflow-x: hidden;
}

/* 科技风主色调 */
:root {
    --primary-dark: #0a0a0a;
    --secondary-dark: #1a1a2e;
    --accent-blue: #00bfff;
    --accent-purple: #8a2be2;
    --accent-silver: #c0c0c0;
    --neon-blue: #00f5ff;
    --neon-purple: #ff00ff;
}

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 1rem 0;
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.98);
    padding: 0.5rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--accent-silver);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: var(--neon-blue);
    text-shadow: 0 0 10px var(--neon-blue);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

/* 汉堡菜单（移动端） */
.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--accent-silver);
    margin: 3px 0;
    transition: 0.3s;
}

/* 主容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 英雄区域样式 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: radial-gradient(circle at 50% 50%, rgba(0, 191, 255, 0.1) 0%, transparent 50%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(0,191,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, var(--neon-blue), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 20px rgba(0, 245, 255, 0.5);
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: var(--accent-silver);
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    color: white;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 191, 255, 0.3);
}

/* 服务卡片样式 */
.services {
    padding: 5rem 0;
    background: rgba(26, 26, 46, 0.5);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--neon-blue);
    text-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 191, 255, 0.2);
    border-color: var(--neon-blue);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--neon-blue);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--neon-blue);
}

/* 案例展示样式 */
.cases {
    padding: 5rem 0;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.case-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 191, 255, 0.3);
}

.case-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.case-content {
    padding: 1.5rem;
}

.case-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--neon-blue);
}

/* 页脚样式 */
.footer {
    background: rgba(10, 10, 10, 0.95);
    padding: 3rem 0 1rem;
    text-align: center;
    margin-top: 5rem;
}

/* ================================
   响应式设计和移动端优化
   ================================ */

/* 移动端断点：768px及以下 */
@media screen and (max-width: 768px) {
    /* 导航栏移动端优化 */
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(10, 10, 10, 0.98);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 2rem;
        transition: left 0.3s ease;
        backdrop-filter: blur(20px);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    /* 英雄区域移动端优化 */
    .hero-content h1 {
        font-size: 2.2rem;
        line-height: 1.2;
    }
    
    .hero-content p {
        font-size: 1rem;
        padding: 0 1rem;
    }
    
    /* 容器和间距调整 */
    .container {
        padding: 0 1rem;
    }
    
    .section-title {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    /* 网格布局调整 */
    .service-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .case-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .service-card, .case-card {
        padding: 1.5rem;
    }
    
    /* 按钮大小调整 */
    .btn {
        padding: 10px 25px;
        font-size: 0.9rem;
    }
    
    /* 表格响应式处理 */
    .service-card table {
        font-size: 0.8rem;
    }
    
    .service-card th,
    .service-card td {
        padding: 0.5rem;
    }
}

/* 平板断点：769px - 1024px */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .service-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h1 {
        font-size: 3rem;
    }
}

/* 小屏幕手机断点：480px及以下 */
@media screen and (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .service-card, .case-card {
        padding: 1rem;
    }
    
    .case-image {
        height: 150px;
        font-size: 2rem;
    }
}

/* ================================
   交互效果和动画
   ================================ */

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 关键词高亮动画 */
.keyword-highlight {
    background: linear-gradient(45deg, var(--neon-blue), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        text-shadow: 0 0 5px var(--neon-blue), 0 0 10px var(--neon-blue);
    }
    to {
        text-shadow: 0 0 10px var(--neon-purple), 0 0 20px var(--neon-purple);
    }
}

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-left: 4px solid var(--neon-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

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

/* 悬停效果增强 */
.service-card:hover .service-icon,
.case-card:hover .case-image {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

/* 滚动进度条 */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    z-index: 1001;
    transition: width 0.1s ease;
}

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

/* 焦点状态优化 */
.btn:focus,
.nav-menu a:focus {
    outline: 2px solid var(--neon-blue);
    outline-offset: 2px;
}

/* 触摸设备优化 */
@media (hover: none) {
    .service-card:hover,
    .case-card:hover {
        transform: none;
    }
    
    .btn:hover {
        transform: none;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .footer,
    .btn {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.contact-info {
    margin-bottom: 2rem;
}

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--neon-blue);
}

.phone-number {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--neon-blue);
    text-shadow: 0 0 10px rgba(0, 245, 255, 0.5);
    margin: 1rem 0;
}

.copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    color: var(--accent-silver);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.98);
        flex-direction: column;
        padding: 1rem 0;
    }

    .nav-menu.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .container {
        padding: 0 1rem;
    }

    .service-grid,
    .case-grid {
        grid-template-columns: 1fr;
    }
}

/* 关键词水印效果 */
.keyword-watermark {
    position: fixed;
    bottom: 20px;
    right: 20px;
    color: rgba(255, 255, 255, 0.05);
    font-size: 0.8rem;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    user-select: none;
    pointer-events: none;
}

/* 滚动动画 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 粒子背景效果 */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}

.particle {
    position: absolute;
    background: rgba(0, 191, 255, 0.3);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}