/* 现代化整体风格 */

/* 全局变量 */
:root {
    --primary-color: #e74c3c;
    --primary-dark: #c0392b;
    --secondary-color: #3498db;
    --accent-color: #f39c12;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --error-color: #e74c3c;
    
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --text-light: #bdc3c7;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-dark: #2c3e50;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --bg-gradient-red: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.1);
    --shadow-xl: 0 12px 24px rgba(0,0,0,0.15);
    
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 现代化导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    height: 70px;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.nav-logo h2 {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.5rem;
    font-weight: bold;
    background: var(--bg-gradient-red);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-item {
    margin: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    padding: 10px 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

/* 现代化按钮 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    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-primary {
    background: var(--bg-gradient-red);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    background: #2980b9;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

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

/* 现代化卡片 */
.card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* 现代化指标卡片 */
.metric-card {
    background: var(--bg-primary);
    padding: 24px;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--bg-gradient-red);
    transition: var(--transition);
}

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.metric-card:hover::before {
    width: 8px;
}

.metric-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    transition: var(--transition);
}

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

.metric-content {
    flex: 1;
}

.metric-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 5px;
    background: var(--bg-gradient-red);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* 现代化AI状态面板 */
.ai-status-panel {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    margin-bottom: 30px;
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.ai-status-panel::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--bg-gradient-red);
}

.ai-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.ai-header h3 {
    margin: 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
}

.ai-status {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition);
}

.ai-status.running {
    background: #dcfce7;
    color: #166534;
    box-shadow: 0 2px 4px rgba(34, 197, 94, 0.2);
}

.ai-content {
    color: var(--text-secondary);
}

.ai-message {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.ai-recommendations {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.recommendation-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.recommendation-item:hover {
    background: #f1f3f4;
    transform: translateX(4px);
}

.rec-icon {
    font-size: 1.2rem;
}

.rec-text {
    flex: 1;
    color: var(--text-primary);
    font-weight: 500;
}

/* 现代化投放卡片 */
.campaign-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.campaign-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--bg-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.campaign-card:hover::before {
    transform: scaleX(1);
}

.campaign-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.campaign-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.campaign-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

.campaign-status {
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition);
}

.campaign-status.active {
    background: #dcfce7;
    color: #166534;
    box-shadow: 0 2px 4px rgba(34, 197, 94, 0.2);
}

.campaign-status.paused {
    background: #fef3c7;
    color: #92400e;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.2);
}

.campaign-metrics {
    margin-bottom: 20px;
}

.metric-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: var(--transition);
}

.metric-row:hover {
    background: var(--bg-secondary);
    padding-left: 8px;
    border-radius: var(--border-radius);
}

.metric-row:last-child {
    border-bottom: none;
}

.metric-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.metric-value {
    font-weight: 600;
    color: var(--text-primary);
}

.campaign-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* 现代化达人卡片 */
.influencer-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: 24px;
    transition: var(--transition);
    border: 1px solid rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.influencer-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--bg-gradient);
    transform: scaleX(0);
    transition: var(--transition);
}

.influencer-card:hover::before {
    transform: scaleX(1);
}

.influencer-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.influencer-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.influencer-info h3 {
    margin: 0 0 5px 0;
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 600;
}

.influencer-username {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.ai-score {
    text-align: center;
    background: var(--bg-gradient-red);
    color: white;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    min-width: 80px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.ai-score:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.score-value {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
}

.score-label {
    font-size: 0.8rem;
    opacity: 0.9;
}

.influencer-metrics {
    margin-bottom: 20px;
}

.ai-analysis {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.ai-analysis:hover {
    background: #f1f3f4;
}

.ai-analysis h4 {
    margin: 0 0 15px 0;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.recommendation-badge {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 10px;
    transition: var(--transition);
}

.recommendation-badge.strong {
    background: #dcfce7;
    color: #166534;
    box-shadow: 0 2px 4px rgba(34, 197, 94, 0.2);
}

.recommendation-badge.recommended {
    background: #dbeafe;
    color: #1e40af;
    box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.recommendation-badge.cautious {
    background: #fef3c7;
    color: #92400e;
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.2);
}

.analysis-text {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
    font-size: 0.9rem;
}

.influencer-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* 现代化AI聊天 */
.ai-chat {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 600px;
    border: 1px solid rgba(0,0,0,0.05);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background: var(--bg-secondary);
}

.message {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    animation: fadeInUp 0.3s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--bg-gradient-red);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.user-message .message-avatar {
    background: var(--secondary-color);
}

.message-content {
    flex: 1;
    background: var(--bg-primary);
    padding: 16px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.message-content:hover {
    box-shadow: var(--shadow-md);
}

.message-text {
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 5px;
}

.message-time {
    font-size: 0.8rem;
    color: var(--text-light);
}

.chat-input {
    display: flex;
    padding: 20px;
    gap: 10px;
    background: var(--bg-primary);
    border-top: 1px solid rgba(0,0,0,0.05);
}

.chat-input input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid rgba(0,0,0,0.1);
    border-radius: 25px;
    font-size: 0.9rem;
    transition: var(--transition);
    background: var(--bg-secondary);
}

.chat-input input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--bg-primary);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.chat-input button {
    width: 45px;
    height: 45px;
    border: none;
    background: var(--bg-gradient-red);
    color: white;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.chat-input button:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-md);
}

/* 现代化建议按钮 */
.suggestion-btn {
    padding: 12px 16px;
    background: var(--bg-secondary);
    border: 2px solid rgba(0,0,0,0.1);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    font-size: 0.9rem;
    font-weight: 500;
}

.suggestion-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    transform: translateX(4px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .platform-sidebar {
        width: 100%;
        position: relative;
        height: auto;
    }
    
    .platform-main {
        margin-left: 0;
    }
    
    .platform-container {
        flex-direction: column;
    }
    
    .ai-agent-container {
        grid-template-columns: 1fr;
    }
    
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .campaigns-grid {
        grid-template-columns: 1fr;
    }
    
    .influencers-grid {
        grid-template-columns: 1fr;
    }
    
    .analytics-grid {
        grid-template-columns: 1fr;
    }
    
    .analysis-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .platform-section {
        padding: 20px;
    }
    
    .section-header {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .card {
        padding: 16px;
    }
    
    .metric-card {
        padding: 16px;
    }
}