/* ========================================
   北京侦探事务所 - 主题样式表
   主色调：咖啡棕 #795548
   辅助色：#8D6E63, #A1887F, #D7CCC8
   强调色：金色 #FFD700 ( Golden )
   ======================================== */

/* 基础变量定义 */
:root {
    --color-primary: #795548;
    --color-primary-dark: #5D4037;
    --color-primary-light: #8D6E63;
    --color-accent: #FFD700;
    --color-accent-dark: #FFA000;
    --color-bg-light: #F5F5F5;
    --color-bg-brown: #EFEBE9;
    --color-text-dark: #3E2723;
    --color-text-muted: #8D6E63;
    --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* 全局重置与基础 */
body {
    font-family: var(--font-family-base);
    color: var(--color-text-dark);
    background-color: #FAFAFA;
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* 颜色类 - 背景 */
.bg-coffee {
    background-color: var(--color-primary) !important;
}

.bg-coffee-dark {
    background-color: var(--color-primary-dark) !important;
}

.bg-dark-brown {
    background-color: var(--color-primary-dark) !important;
}

.bg-light-brown {
    background-color: var(--color-bg-brown) !important;
}

.bg-brown {
    background-color: var(--color-primary) !important;
}

.bg-golden {
    background-color: var(--color-accent) !important;
}

/* 颜色类 - 文字 */
.text-brown {
    color: var(--color-primary) !important;
}

.text-dark-brown {
    color: var(--color-text-dark) !important;
}

.text-golden {
    color: var(--color-accent) !important;
}

/* 边框颜色 */
.border-brown {
    border-color: var(--color-primary) !important;
}

/* 顶部栏 */
.top-bar {
    font-size: 0.875rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* 导航栏定制 */
.navbar-brand {
    padding: 0.5rem 0;
}

.brand-text h1 {
    font-size: 1.25rem;
    letter-spacing: 1px;
}

.text-golden {
    color: var(--color-accent) !important;
}

.bg-golden {
    background-color: var(--color-accent) !important;
}

.navbar-dark .navbar-nav .nav-link {
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    padding: 0.5rem 1rem;
    margin: 0 0.25rem;
    border-radius: 20px;
    transition: all 0.3s ease;
}

.navbar-dark .navbar-nav .nav-link:hover,
.navbar-dark .navbar-nav .nav-link.active {
    background-color: var(--color-accent);
    color: var(--color-text-dark);
}

.btn-golden {
    background-color: var(--color-accent);
    color: var(--color-text-dark);
    border: none;
    transition: all 0.3s ease;
}

.btn-golden:hover {
    background-color: var(--color-accent-dark);
    color: var(--color-text-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.4);
}

.btn-brown {
    background-color: var(--color-primary);
    color: white;
    border: none;
    transition: all 0.3s ease;
}

.btn-brown:hover {
    background-color: var(--color-primary-dark);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(121, 85, 72, 0.4);
}

.btn-outline-brown {
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    background: transparent;
    transition: all 0.3s ease;
}

.btn-outline-brown:hover {
    background-color: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

.btn-dark-brown {
    background-color: var(--color-primary-dark);
    color: white;
    border: none;
}

.btn-dark-brown:hover {
    background-color: #4E342E;
    color: white;
}

/* Hero轮播图 */
.hero-slider .carousel-item {
    height: 600px;
}

.slide-bg {
    position: relative;
    display: flex;
    align-items: center;
}

.text-shadow {
    text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
}

/* 统计栏 */
.stats-bar {
    position: relative;
    z-index: 10;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

.stat-item h3 {
    color: var(--color-primary-dark);
    font-weight: 700;
}

/* 服务卡片 */
.service-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid rgba(121, 85, 72, 0.1);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(121, 85, 72, 0.15) !important;
}

.service-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hover-zoom {
    transition: transform 0.5s ease;
}

.hover-zoom:hover {
    transform: scale(1.1);
}

/* 关于我们区域 */
.about-images {
    position: relative;
}

.experience-badge {
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* 流程部分 */
.process-card {
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.process-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.process-icon {
    font-size: 1.5rem;
    font-weight: bold;
}

/* 新闻卡片 */
.news-card {
    transition: all 0.3s ease;
    border: 1px solid rgba(0,0,0,0.05);
}

.news-card:hover {
    box-shadow: 0 15px 35px rgba(0,0,0,0.1) !important;
    transform: translateY(-5px);
}

.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 城市网格 */
.city-grid {
    max-height: 400px;
    overflow-y: auto;
}

.city-tag {
    font-size: 0.875rem;
    transition: all 0.3s ease;
    background-color: rgba(121, 85, 72, 0.05);
}

.city-tag:hover {
    background-color: var(--color-primary) !important;
    color: white !important;
    border-color: var(--color-primary) !important;
    transform: scale(1.05);
}

/* 客户评价 */
.testimonial-card {
    backdrop-filter: blur(10px);
}

/* FAQ手风琴 */
.accordion-item {
    border-radius: 12px !important;
    margin-bottom: 1rem;
    border: 1px solid rgba(121, 85, 72, 0.1) !important;
    overflow: hidden;
}

.accordion-button {
    background-color: white;
    color: var(--color-text-dark);
    font-weight: 600;
    padding: 1.25rem;
}

.accordion-button:not(.collapsed) {
    background-color: var(--color-bg-brown);
    color: var(--color-primary-dark);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: none;
    border-color: rgba(121, 85, 72, 0.25);
}

/* 页面横幅 */
.page-banner {
    min-height: 300px;
    display: flex;
    align-items: center;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: var(--color-accent);
}

.breadcrumb-item.active {
    color: rgba(255,255,255,0.8);
}

/* 侧边栏小部件 */
.sidebar-widget {
    margin-bottom: 1.5rem;
}

.hot-news-list li:last-child,
.list-group-flush .list-group-item:last-child {
    border-bottom: none !important;
    margin-bottom: 0 !important;
    padding-bottom: 0 !important;
}

.hot-rank {
    font-size: 0.875rem;
}

/* 文章内容 */
.content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333;
}

.content p {
    margin-bottom: 1.5rem;
}

.content h2, .content h3, .content h4 {
    color: var(--color-text-dark);
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

/* 分页 */
.pagination .page-link {
    color: var(--color-primary);
    border-color: rgba(121, 85, 72, 0.2);
    margin: 0 2px;
    border-radius: 6px;
}

.pagination .page-item.active .page-link {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.pagination .page-link:hover {
    background-color: var(--color-bg-brown);
    border-color: var(--color-primary);
}

/* 时间线 */
.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background: var(--color-accent);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
}

/* 团队成员 */
.team-card {
    transition: all 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
}

/* 联系表单 */
.form-control.border-brown {
    border: 2px solid rgba(121, 85, 72, 0.2);
    transition: all 0.3s ease;
}

.form-control.border-brown:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 0.2rem rgba(121, 85, 72, 0.15);
}

/* 移动端底部导航 */
.mobile-bottom-nav {
    padding-bottom: env(safe-area-inset-bottom);
    z-index: 1030;
}

/* 回到顶部按钮 */
#backToTop {
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

#backToTop.show {
    opacity: 1;
    visibility: visible;
}

/* 动画效果 */
@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.pulse-btn {
    animation: pulse 2s infinite;
}

.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15) !important;
}

.hover-scale {
    transition: transform 0.3s ease;
}

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

.transition-all {
    transition: all 0.3s ease;
}

/* 特殊列宽 */
.col-xl-1-5 {
    flex: 0 0 auto;
    width: 20%;
}

.col-lg-2-4 {
    flex: 0 0 auto;
    width: 20%;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .col-xl-1-5 {
        width: 25%;
    }
    .col-lg-2-4 {
        width: 25%;
    }
}

@media (max-width: 991.98px) {
    .hero-slider .carousel-item {
        height: 500px;
    }
    
    .about-images .translate-y-50 {
        position: relative !important;
        margin: 20px 0 0 !important;
        right: auto !important;
        transform: none !important;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item.ms-md-auto {
        margin-left: 0 !important;
    }
    
    .timeline-item.me-md-5,
    .timeline-item.ms-md-5 {
        margin-left: 40px !important;
        margin-right: 0 !important;
    }
    
    .timeline-dot {
        left: 10px !important;
        right: auto !important;
    }
    
    .col-lg-2-4 {
        width: 33.333%;
    }
}

@media (max-width: 767.98px) {
    .hero-slider .carousel-item {
        height: 400px;
    }
    
    .stats-bar .border-end {
        border-right: none !important;
        border-bottom: 1px solid rgba(0,0,0,0.1);
    }
    
    .article-item {
        flex-direction: column;
    }
    
    .article-thumb {
        width: 100% !important;
        height: 200px !important;
    }
    
    .col-lg-2-4 {
        width: 50%;
    }
    
    .city-tag {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem !important;
    }
}

@media (max-width: 575.98px) {
    .display-5 {
        font-size: 1.75rem;
    }
    
    .col-6 {
        width: 50%;
    }
    
    .process-icon {
        width: 60px !important;
        height: 60px !important;
    }
    
    .mobile-bottom-nav {
        display: block;
    }
    
    body {
        padding-bottom: 70px;
    }
}

/* 打印样式优化 */
@media print {
    .mobile-bottom-nav,
    .top-bar,
    #backToTop,
    .page-banner {
        display: none !important;
    }
    
    .content {
        font-size: 12pt;
        line-height: 1.5;
    }
}

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

::-webkit-scrollbar-track {
    background: var(--color-bg-brown);
}

::-webkit-scrollbar-thumb {
    background: var(--color-primary-light);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* 选中文字颜色 */
::selection {
    background-color: var(--color-accent);
    color: var(--color-text-dark);
}

/* 加载占位符 */
.img-loading {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* 徽章样式优化 */
.badge.bg-light-brown {
    background-color: rgba(121, 85, 72, 0.1) !important;
    color: var(--color-primary) !important;
}

/* 表单验证样式 */
.was-validated .form-control:valid,
.form-control.is-valid {
    border-color: #198754;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
}

.was-validated .form-control:invalid,
.form-control.is-invalid {
    border-color: #dc3545;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e");
}

/* 友链区域 */
.friend-links a {
    display: inline-block;
    padding: 0.25rem 0;
    transition: all 0.2s;
}

.friend-links a:hover {
    color: var(--color-accent);
    transform: translateX(3px);
}

/* 水印效果（仅作装饰） */
.watermark {
    position: fixed;
    bottom: 20px;
    right: 20px;
    opacity: 0.1;
    pointer-events: none;
    z-index: 9999;
}

/* 内容图片自适应 */
.content img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
}

/* 表格样式 */
.content table {
    width: 100%;
    margin-bottom: 1rem;
    border-collapse: collapse;
}

.content table th,
.content table td {
    padding: 0.75rem;
    border: 1px solid #dee2e6;
}

.content table th {
    background-color: var(--color-bg-brown);
    color: var(--color-text-dark);
    font-weight: 600;
}

/* 引用块 */
.content blockquote {
    border-left: 4px solid var(--color-accent);
    padding-left: 1rem;
    margin-left: 0;
    color: var(--color-text-muted);
    font-style: italic;
}

/* 列表样式 */
.content ul,
.content ol {
    padding-left: 1.5rem;
    margin-bottom: 1rem;
}

.content li {
    margin-bottom: 0.5rem;
}

/* 链接样式 */
.content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-decoration-color: var(--color-accent);
    text-underline-offset: 3px;
}

.content a:hover {
    color: var(--color-primary-dark);
    text-decoration-color: var(--color-primary);
}