/**
 * 慧渠道营销生态平台 - 主样式文件（优化版）
 * @copyright www.qudaoxia.cn
 * 整合所有页面通用样式，减少重复代码
 */

/* ===== CSS自定义属性 ===== */
:root {
    /* 颜色系统 */
    --primary: #1E40AF;
    --secondary: #3B82F6;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --light-bg: #F8FAFC;
    --dark-text: #374151;
    --border: #E5E7EB;
    
    /* 渐变 */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --success-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    --warning-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.15);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.15);
    
    /* 圆角和过渡 */
    --radius: 6px;
    --radius-lg: 12px;
    --transition: all 0.3s ease;
}

/* ===== 全局基础样式 ===== */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--light-bg);
    color: var(--dark-text);
    line-height: 1.6;
}

/* ===== 组件样式 ===== */

/* 导航栏 */
.navbar {
    box-shadow: var(--shadow-sm);
}
.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}
.navbar-nav .nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    margin: 0 2px;
    transition: var(--transition);
}
.navbar-nav .nav-link:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-1px);
}

/* 卡片 */
.card {
    border: none;
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}
.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 按钮 */
.btn {
    border-radius: var(--radius);
    font-weight: 500;
    padding: 8px 16px;
    transition: var(--transition);
}
.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
}
.btn-success {
    background: var(--success);
    border-color: var(--success);
}
.btn-warning {
    background: var(--warning);
    border-color: var(--warning);
}
.btn-gradient {
    background: var(--primary-gradient);
    border: none;
    color: white;
    border-radius: 25px;
    font-weight: 600;
}
.btn-gradient:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(102,126,234,0.3);
    color: white;
}

/* 表单 */
.form-control, .form-select {
    border-radius: var(--radius);
    border: 1px solid var(--border);
    padding: 10px 15px;
    transition: var(--transition);
}
.form-control:focus, .form-select:focus {
    border-color: var(--secondary);
    box-shadow: 0 0 0 0.2rem rgba(59,130,246,0.25);
}

/* 模态框 */
.modal-content {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

/* 下拉菜单 */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-lg);
    padding: 0.5rem 0;
}
.dropdown-item {
    padding: 0.5rem 1rem;
    transition: var(--transition);
}
.dropdown-item:hover {
    background: #f8f9fa;
    transform: translateX(5px);
}

/* ===== 特殊组件 ===== */

/* 积分徽章 */
.points-badge {
    background: linear-gradient(45deg, #FFD700, #FFA500);
    color: white;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: bold;
}

/* 商机标签 */
.business-tag {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    margin-right: 5px;
}
.tag-buy { background: #DBEAFE; color: var(--primary); }
.tag-sell { background: #D1FAE5; color: var(--success); }
.tag-referral { background: #FEF3C7; color: var(--warning); }

/* 认证页面 */
.auth-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}
.auth-header {
    text-align: center;
    margin-bottom: 30px;
}
.auth-header h2 {
    color: var(--primary);
    margin-bottom: 10px;
}

/* ===== 首页专用样式 ===== */

/* 英雄区域 */
.hero-section {
    background: var(--primary-gradient);
    color: white;
    padding: 60px 0 40px;
    position: relative;
    overflow: hidden;
}
.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}
.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

/* 统计容器 */
.stats-container {
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    padding: 2rem;
    margin-top: 1rem;
}

/* 统计网格 - 每行四个 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}
.stat-item {
    text-align: center;
    padding: 1.2rem;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}
.stat-item:hover {
    transform: translateY(-3px);
    background: rgba(255,255,255,0.15);
}
.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
}
.stat-label {
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.9;
}

/* 功能卡片 */
.feature-card {
    height: 100%;
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}
.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

/* 内容卡片 */
.content-card {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}
.content-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* 搜索筛选 */
.search-filter-card {
    background: var(--primary-gradient);
    color: white;
}
.search-filter-card .form-control,
.search-filter-card .form-select {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
    color: white;
}
.search-filter-card .form-control::placeholder {
    color: rgba(255,255,255,0.7);
}

/* 人脉卡片 */
.contact-card {
    transition: var(--transition);
    border: 1px solid var(--border);
}
.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

/* ===== 工具类 ===== */
.text-gradient {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 加载动画 */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== 响应式设计 ===== */
@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; }
    .stats-grid { grid-template-columns: 1fr; gap: 1rem; }
    .stat-item { padding: 1rem; }
    .stat-number { font-size: 1.5rem; }
    .feature-icon { width: 50px; height: 50px; }
    .container { padding: 0 15px; }
    
    /* 移动端导航优化 */
    .navbar-nav { padding-top: 1rem; }
    .navbar-nav .nav-link { padding: 0.75rem 1rem; margin: 2px 0; }
}

@media (max-width: 576px) {
    .hero-section { padding: 40px 0 20px; }
    .hero-title { font-size: 1.8rem; }
    .auth-container { margin: 50px auto; padding: 20px; }
}

/* ===== 可访问性优化 ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

.btn:focus, .card:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== Tab样式 ===== */
.nav-pills .nav-link {
    color: var(--dark-text);
    background: transparent;
    border: 2px solid transparent;
    border-radius: 25px;
    padding: 12px 24px;
    margin: 0 8px;
    font-weight: 600;
    transition: var(--transition);
}

.nav-pills .nav-link:hover {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.3);
    color: var(--primary);
}

.nav-pills .nav-link.active {
    background: var(--primary-gradient);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.tab-content {
    margin-top: 2rem;
}

.tab-pane {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 代理商卡片样式 */
.agent-card {
    text-align: center;
}

.agent-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    color: white;
}

.agent-stats {
    display: flex;
    gap: 15px;
}

/* ===== 打印样式 ===== */
@media print {
    .navbar, .btn, .modal { display: none !important; }
    .card { box-shadow: none; border: 1px solid #ddd; }
    body { background: white !important; }
}