/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #165DFF;
    --primary-dark: #0E42B3;
    --secondary: #36CFC9;
    --success: #00B42A;
    --warning: #FF7D00;
    --danger: #F53F3F;
    --dark: #1D2129;
    --gray-1: #86909C;
    --gray-2: #C9CDD4;
    --gray-3: #F2F3F5;
    --white: #FFFFFF;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 企业级动画 */
.animate-fade-in {
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-fade-up {
    animation: fadeUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

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

/* 企业导航栏 */
.business-nav {
    background: rgba(22, 93, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    padding: 15px 0;
}

.business-nav .navbar-brand {
    font-size: 24px;
    font-weight: 700;
    color: var(--white);
    transition: var(--transition);
}

.business-nav .nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    margin: 0 10px;
    transition: var(--transition);
    position: relative;
}

.business-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

.business-nav .nav-link:hover::after,
.business-nav .nav-link.active::after {
    width: 80%;
}

.business-nav .nav-link:hover {
    color: var(--white);
}

/* Hero大屏 */
.hero-section {
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://img.51miz.com/Element/00/72/18/90/87721890_E.png') no-repeat right bottom;
    background-size: 50%;
    opacity: 0.1;
}

.hero-title {
    font-size: 48px;
    font-weight: 700;
    color: var(--white);
    line-height: 1.2;
}

.hero-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 500px;
}

.hero-btn {
    padding: 12px 30px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.hero-img {
    max-width: 100%;
    animation: float 3s ease-in-out infinite;
}

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

/* 通用区块标题 */
.section-title h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary);
    border-radius: 3px;
}

/* 服务卡片 */
.service-section {
    background: var(--white);
}

.service-card {
    text-align: center;
    padding: 40px 30px;
    border-radius: 12px;
    background: var(--white);
    border: 1px solid var(--gray-3);
    transition: var(--transition);
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(22, 93, 255, 0.1);
    border-color: var(--primary);
}

.service-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin: 0 auto 25px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-card h4 {
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark);
}

/* 优势模块 */
.advantage-section {
    background: var(--gray-3);
}

.advantage-item {
    margin-bottom: 30px;
}

.advantage-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(22, 93, 255, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.advantage-item h4 {
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--dark);
}

/* 流程模块 */
.process-section {
    background: var(--white);
}

.process-item {
    text-align: center;
    padding: 30px 20px;
    position: relative;
    height: 100%;
}

.process-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.process-item h4 {
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--dark);
}

.process-item::after {
    content: '';
    position: absolute;
    top: 60px;
    right: -50%;
    width: 100%;
    height: 2px;
    background: repeating-linear-gradient(90deg, var(--primary) 0, var(--primary) 10px, transparent 10px, transparent 20px);
}

.process-item:last-child::after {
    display: none;
}

/* CTA区块 */
.cta-section {
    background: var(--gray-3);
}

.cta-card {
    padding: 60px 50px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
}

.cta-card h2 {
    font-weight: 700;
    line-height: 1.3;
}

.cta-btn {
    padding: 12px 40px;
    font-weight: 600;
    color: var(--primary);
    border-radius: 8px;
    transition: var(--transition);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
    background: var(--white);
    color: var(--primary);
}

/* 企业页脚 */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 60px 0 20px;
}

.footer-brand h3 {
    color: var(--white);
    font-weight: 700;
    font-size: 24px;
}

.footer h5 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-link {
    list-style: none;
    padding: 0;
}

.footer-link li {
    margin-bottom: 10px;
}

.footer-link a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-copyright {
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* 登录注册页面 */
.auth-body {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 520px;
}

.auth-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px 35px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.register-card {
    max-width: 700px;
}

.auth-brand {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

.auth-brand:hover {
    color: var(--primary-dark);
}

.auth-form .form-control,
.auth-form .form-select {
    padding: 12px 15px;
    border-radius: 8px;
    border: 1px solid var(--gray-2);
    transition: var(--transition);
}

.auth-form .form-control:focus,
.auth-form .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.1);
}

.auth-btn {
    padding: 12px 0;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    background: var(--primary);
    border: none;
    transition: var(--transition);
}

.auth-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(22, 93, 255, 0.3);
}

/* 用户中心工作台 */
.user-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 20px 0;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
}

.user-header .navbar-brand {
    color: var(--white);
    font-weight: 700;
    font-size: 22px;
}

.user-header .nav-link {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    transition: var(--transition);
}

.user-header .nav-link:hover {
    color: var(--white);
}

.data-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: 16px;
    padding: 30px;
    color: var(--white);
    box-shadow: 0 10px 30px rgba(22, 93, 255, 0.2);
}

.data-item {
    text-align: center;
}

.data-label {
    font-size: 14px;
    opacity: 0.9;
    margin-bottom: 8px;
}

.data-value {
    font-size: 28px;
    font-weight: 700;
    margin: 0;
}

.function-card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    height: 100%;
}

.function-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
}

.function-card .card-title {
    font-weight: 700;
    color: var(--dark);
}

/* 前后台左侧菜单通用样式 */
.admin-sidebar {
    width: 250px;
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: #1D2129;
    z-index: 999;
    display: flex;
    flex-direction: column;
}

.user-sidebar {
    background: linear-gradient(180deg, #165DFF 0%, #0E42B3 100%);
}

.sidebar-brand {
    color: var(--white);
    font-weight: 700;
    font-size: 20px;
    padding: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: block;
    text-decoration: none;
    transition: var(--transition);
}

.sidebar-brand:hover {
    color: var(--primary);
}

.sidebar-menu {
    padding: 20px 0;
    margin: 0;
    list-style: none;
    flex: 1;
    overflow-y: auto;
}

.sidebar-menu li {
    margin-bottom: 5px;
}

.sidebar-menu a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    padding: 12px 20px;
    display: block;
    transition: var(--transition);
    border-radius: 8px;
    margin: 0 10px;
    font-weight: 500;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    transform: translateX(5px);
}

.sidebar-user-info {
    padding: 20px 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.admin-main {
    margin-left: 250px;
    padding: 20px;
    min-height: 100vh;
    background: var(--gray-3);
}

.admin-header {
    background: var(--white);
    padding: 15px 20px;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: none;
}

.stats-card {
    padding: 25px;
    border-radius: 12px;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
}

.stats-card h5 {
    color: var(--gray-1);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 10px;
}

.stats-card h2 {
    font-weight: 700;
    color: var(--dark);
    margin: 0;
}

/* 表格样式 */
.table {
    margin-bottom: 0;
}

.table thead th {
    font-weight: 700;
    background: var(--gray-3);
    border: none;
    color: var(--dark);
}

.table tbody tr {
    transition: var(--transition);
}

.table tbody tr:hover {
    background: rgba(22, 93, 255, 0.05);
}

/* 按钮通用样式 */
.btn {
    transition: var(--transition);
    border-radius: 8px;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* 【核心】桌面端强制左侧菜单固定，不会跑到顶部 */
@media (min-width: 993px) {
    .admin-sidebar, .user-sidebar {
        width: 250px !important;
        height: 100vh !important;
        position: fixed !important;
        top: 0 !important;
        left: 0 !important;
    }
    .admin-main {
        margin-left: 250px !important;
        padding: 20px !important;
    }
}

/* 响应式适配：手机端自动折叠 */
@media (max-width: 992px) {
    .admin-sidebar, .user-sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    .admin-main {
        margin-left: 0;
        padding: 15px;
    }
    .sidebar-menu {
        height: auto;
        display: flex;
        flex-wrap: wrap;
        padding: 10px 0;
    }
    .sidebar-menu li {
        margin-bottom: 0;
        margin-right: 5px;
    }
    .sidebar-menu a {
        padding: 8px 12px;
        margin: 0;
        font-size: 14px;
    }
    .sidebar-user-info {
        display: none;
    }
    .hero-title {
        font-size: 36px;
    }
    .process-item::after {
        display: none;
    }
    .data-value {
        font-size: 22px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 28px;
    }
    .section-title h2 {
        font-size: 28px;
    }
    .auth-card {
        padding: 30px 20px;
    }
    .cta-card {
        padding: 40px 25px;
        text-align: center;
    }
}