/* 通用样式文件 */
/* 乐智影公司网站 - 通用样式定义 */

/* 重置和基础样式 */
* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    overflow-x: hidden;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 通用按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    line-height: 1.5;
    white-space: nowrap;
}

.btn-primary {
    background-color: #007bff;
    color: #fff;
}

.btn-primary:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.btn-outline {
    background-color: transparent;
    color: #007bff;
    border: 2px solid #007bff;
}

.btn-outline:hover {
    background-color: #007bff;
    color: #fff;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #545b62;
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-control.error {
    border-color: #dc3545;
}

.form-error {
    color: #dc3545;
    font-size: 14px;
    margin-top: 5px;
}

/* 图标样式 */
.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    vertical-align: middle;
    fill: currentColor;
}

/* 常用图标 */
.icon-phone::before { content: "📞"; }
.icon-email::before { content: "✉️"; }
.icon-location::before { content: "📍"; }
.icon-time::before { content: "🕒"; }
.icon-arrow-up::before { content: "↑"; }
.icon-arrow-down::before { content: "↓"; }
.icon-arrow-left::before { content: "←"; }
.icon-arrow-right::before { content: "→"; }
.icon-close::before { content: "×"; }
.icon-search::before { content: "🔍"; }
.icon-user::before { content: "👤"; }
.icon-image::before { content: "🖼️"; }
.icon-news::before { content: "📰"; }
.icon-folder::before { content: "📁"; }
.icon-chat::before { content: "💬"; }
.icon-handshake::before { content: "🤝"; }
.icon-external-link::before { content: "🔗"; }
.icon-quote-left::before { content: """; }
.icon-quote-right::before { content: """; }
.icon-star::before { content: "★"; }
.icon-star.filled::before { content: "★"; color: #ffc107; }
.icon-wechat::before { content: "💬"; }
.icon-weibo::before { content: "📱"; }
.icon-douyin::before { content: "🎵"; }
.icon-qq::before { content: "🐧"; }
.icon-consult::before { content: "💡"; }

/* 工具类 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: #007bff; }
.text-secondary { color: #6c757d; }
.text-success { color: #28a745; }
.text-danger { color: #dc3545; }
.text-warning { color: #ffc107; }
.text-info { color: #17a2b8; }

.bg-primary { background-color: #007bff; }
.bg-secondary { background-color: #6c757d; }
.bg-success { background-color: #28a745; }
.bg-danger { background-color: #dc3545; }
.bg-warning { background-color: #ffc107; }
.bg-info { background-color: #17a2b8; }

.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-around { justify-content: space-around; }

.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.align-items-end { align-items: flex-end; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.flex-wrap { flex-wrap: wrap; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.m-0 { margin: 0; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.ml-0 { margin-left: 0; }
.mr-0 { margin-right: 0; }

.p-0 { padding: 0; }
.pt-0 { padding-top: 0; }
.pb-0 { padding-bottom: 0; }
.pl-0 { padding-left: 0; }
.pr-0 { padding-right: 0; }

/* 响应式工具类 */
@media (max-width: 768px) {
    .d-md-none { display: none; }
    .d-md-block { display: block; }
}

@media (max-width: 576px) {
    .d-sm-none { display: none; }
    .d-sm-block { display: block; }
}

/* 动画类 */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.slide-up {
    animation: slideUp 0.5s ease-out;
}

.slide-down {
    animation: slideDown 0.5s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

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

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 页面加载指示器 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.back-to-top:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

/* 空状态样式 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #6c757d;
}

.empty-state i {
    font-size: 48px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 18px;
    margin: 0;
}

/* 响应式图片 */
.img-responsive {
    max-width: 100%;
    height: auto;
}

.img-fluid {
    width: 100%;
    height: auto;
}

/* 清除浮动 */
.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* 文本截断 */
.text-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 卡片样式 */
.card {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid #e1e5e9;
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 20px;
    border-top: 1px solid #e1e5e9;
    background-color: #f8f9fa;
}