/* 
 * 股票预测系统前台样式
 * Financial-grade design with Bloomberg/Reuters inspiration
 */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-card: #16161f;
    --bg-card-hover: #1c1c28;
    --border-color: #2a2a3a;
    --text-primary: #f4f4f5;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent-green: #00d084;
    --accent-green-dim: rgba(0, 208, 132, 0.15);
    --accent-red: #ff4757;
    --accent-red-dim: rgba(255, 71, 87, 0.15);
    --accent-yellow: #ffa502;
    --accent-yellow-dim: rgba(255, 165, 2, 0.15);
    --accent-blue: #3b82f6;
    --gradient-primary: linear-gradient(135deg, #00d084 0%, #00b4d8 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Grid background effect */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 208, 132, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 208, 132, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.site-header {
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    background: rgba(10, 10, 15, 0.95);
    backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-green);
}

/* Hero Section */
.hero {
    padding: 80px 0 60px;
    text-align: center;
    position: relative;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-green), transparent);
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Market Status Bar */
.market-status {
    display: flex;
    justify-content: center;
    gap: 40px;
    padding: 20px 0;
    margin: 30px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.status-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-dot.live {
    background: var(--accent-green);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-value {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
}

/* Prediction Cards Grid */
.predictions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: 24px;
    padding: 40px 0;
}

.prediction-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.prediction-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s;
}

.prediction-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-green);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.prediction-card:hover::before {
    opacity: 1;
}

.card-header {
    padding: 24px 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.card-date {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sentiment-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.sentiment-badge.bullish {
    background: var(--accent-green-dim);
    color: var(--accent-green);
}

.sentiment-badge.bearish {
    background: var(--accent-red-dim);
    color: var(--accent-red);
}

.sentiment-badge.neutral {
    background: var(--accent-yellow-dim);
    color: var(--accent-yellow);
}

.card-body {
    padding: 20px 24px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.4;
}

.card-summary {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    padding: 16px 24px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.tag {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.tag:hover {
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--accent-green);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: gap 0.3s;
}

.read-more:hover {
    gap: 10px;
}

.read-more svg {
    width: 16px;
    height: 16px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 80px 40px;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px dashed var(--border-color);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.empty-text {
    color: var(--text-muted);
}

/* Detail Page Styles */
.detail-hero {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--border-color);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 30px;
    transition: color 0.3s;
}

.back-link:hover {
    color: var(--accent-green);
}

.detail-meta {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.detail-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 20px;
    line-height: 1.2;
}

.detail-summary {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.8;
    max-width: 800px;
}

/* Content Sections */
.detail-content {
    padding: 50px 0;
}

.content-section {
    margin-bottom: 50px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title::before {
    content: '';
    width: 4px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

/* Recommendations Table */
.recommendations-grid {
    display: grid;
    gap: 16px;
}

.recommendation-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 24px;
    display: grid;
    grid-template-columns: 1fr 120px 100px 100px;
    align-items: center;
    gap: 20px;
    transition: all 0.3s;
}

.recommendation-card:hover {
    border-color: var(--accent-green);
    background: var(--bg-card-hover);
}

.stock-info h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.stock-info .symbol {
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-green);
    font-size: 0.85rem;
}

.stock-rationale {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 8px;
}

.action-badge {
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.85rem;
    text-align: center;
}

.action-badge.buy {
    background: var(--accent-green-dim);
    color: var(--accent-green);
}

.action-badge.sell {
    background: var(--accent-red-dim);
    color: var(--accent-red);
}

.action-badge.hold {
    background: var(--accent-yellow-dim);
    color: var(--accent-yellow);
}

.target-change {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    font-weight: 600;
}

.target-change.positive {
    color: var(--accent-green);
}

.target-change.negative {
    color: var(--accent-red);
}

.confidence-meter {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.confidence-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.confidence-dots {
    display: flex;
    gap: 4px;
}

.confidence-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
}

.confidence-dot.active {
    background: var(--accent-green);
}

/* Risk Factors */
.risk-list {
    list-style: none;
}

.risk-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.risk-item:last-child {
    border-bottom: none;
}

.risk-icon {
    width: 24px;
    height: 24px;
    background: var(--accent-red-dim);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-red);
    font-size: 0.8rem;
    flex-shrink: 0;
}

.risk-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Disclaimer */
.disclaimer {
    background: rgba(255, 165, 2, 0.05);
    border: 1px solid rgba(255, 165, 2, 0.2);
    border-radius: 12px;
    padding: 24px;
    margin-top: 50px;
}

.disclaimer-title {
    color: var(--accent-yellow);
    font-weight: 600;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.disclaimer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* Footer */
.site-footer {
    padding: 40px 0;
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
    text-align: center;
}

.footer-text {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .predictions-grid {
        grid-template-columns: 1fr;
    }
    
    .market-status {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .recommendation-card {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .detail-title {
        font-size: 1.8rem;
    }
}

/* Loading Animation */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 60px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 208, 132, 0.35);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
}

.btn-secondary:hover {
    background: var(--accent-green-dim);
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.nav-status .status-dot {
    background: var(--accent-green);
}