/* 全局样式 */
:root {
    --primary-color: #f0b90b;
    --secondary-color: #1e2026;
    --text-color: #333;
    --light-text: #fff;
    --gray-text: #848e9c;
    --light-bg: #fafafa;
    --card-bg: #fff;
    --border-color: #e6e8ea;
    --success-color: #0ecb81;
    --danger-color: #f6465d;
    --chart-bg: #0b0e11;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--light-bg);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    margin-bottom: 20px;
    font-weight: 600;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    text-align: center;
    margin-bottom: 40px;
}

h3 {
    font-size: 1.5rem;
}

section {
    padding: 80px 0;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.primary:hover {
    background-color: #e0aa0b;
}

.secondary {
    background-color: var(--secondary-color);
    color: var(--light-text);
}

.secondary:hover {
    background-color: #2a2e37;
}

/* 头部导航 */
header {
    background-color: var(--secondary-color);
    color: var(--light-text);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo img {
    height: 30px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--primary-color);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #131722 100%);
    color: var(--light-text);
    padding: 160px 0 80px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    margin-bottom: 20px;
    font-size: 3rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: #b7bdc6;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

/* 价格行情部分 */
.price-section {
    background-color: var(--light-bg);
}

.price-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
    overflow: hidden;
}

.price-header {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.symbol {
    font-size: 1.2rem;
    font-weight: 600;
}

.exchange {
    font-size: 0.9rem;
    color: var(--gray-text);
}

.price-body {
    padding: 25px 20px;
}

.current-price {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

#btc-price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-right: 15px;
}

.change {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 5px 10px;
    border-radius: 4px;
}

.change.positive {
    background-color: rgba(14, 203, 129, 0.1);
    color: var(--success-color);
}

.change.negative {
    background-color: rgba(246, 70, 93, 0.1);
    color: var(--danger-color);
}

.price-stats {
    display: flex;
    justify-content: space-between;
}

.stat {
    text-align: center;
    flex: 1;
}

.label {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-text);
    margin-bottom: 5px;
}

.value {
    font-size: 1.1rem;
    font-weight: 600;
}

.price-footer {
    background-color: #f9fafb;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
}

#last-updated {
    font-size: 0.9rem;
    color: var(--gray-text);
}

.refresh-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.refresh-btn i {
    transition: transform 0.3s ease;
}

.refresh-btn:hover i {
    transform: rotate(180deg);
}

.chart-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 20px;
    height: 400px;
}

#price-chart {
    width: 100%;
    height: 100%;
    background-color: var(--chart-bg);
    border-radius: 4px;
}

/* 分析部分 */
.analysis-section {
    background-color: #fff;
}

.analysis-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.tab {
    padding: 15px 30px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    border-bottom: 3px solid transparent;
}

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

.tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.analysis-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 25px;
    margin-bottom: 30px;
}

.analysis-card h3 {
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.indicators {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.indicator {
    text-align: center;
    padding: 15px;
    border-radius: 8px;
    background-color: #f9fafb;
}

.indicator-name {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
}

.indicator-value {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.indicator-signal {
    font-size: 0.9rem;
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
}

.signal-buy {
    background-color: rgba(14, 203, 129, 0.1);
    color: var(--success-color);
}

.signal-sell {
    background-color: rgba(246, 70, 93, 0.1);
    color: var(--danger-color);
}

.signal-neutral {
    background-color: rgba(132, 142, 156, 0.1);
    color: var(--gray-text);
}

.levels {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.level {
    display: flex;
    justify-content: space-between;
    padding: 10px 15px;
    border-radius: 4px;
    font-weight: 600;
}

.resistance {
    background-color: rgba(246, 70, 93, 0.05);
    border-left: 4px solid var(--danger-color);
}

.support {
    background-color: rgba(14, 203, 129, 0.05);
    border-left: 4px solid var(--success-color);
}

.current {
    background-color: rgba(240, 185, 11, 0.05);
    border-left: 4px solid var(--primary-color);
}

.market-overview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.market-stat {
    text-align: center;
    padding: 20px;
    background-color: #f9fafb;
    border-radius: 8px;
}

.stat-label {
    display: block;
    color: var(--gray-text);
    margin-bottom: 10px;
}

.stat-value {
    font-size: 1.3rem;
    font-weight: 700;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.news-item {
    padding: 15px;
    border-radius: 8px;
    background-color: #f9fafb;
    transition: transform 0.3s ease;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.05);
}

.news-date {
    font-size: 0.8rem;
    color: var(--gray-text);
    margin-bottom: 5px;
}

.news-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.news-summary {
    font-size: 0.9rem;
    color: #666;
}

.sentiment-meter {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.sentiment-label {
    font-weight: 600;
    width: 60px;
}

.sentiment-progress {
    flex: 1;
    height: 10px;
    background: linear-gradient(90deg, var(--danger-color) 0%, #ffcc00 50%, var(--success-color) 100%);
    border-radius: 5px;
    margin: 0 10px;
    position: relative;
}

.sentiment-marker {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--secondary-color);
    border: 3px solid #fff;
    border-radius: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.sentiment-value {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 10px;
}

.sentiment-desc {
    text-align: center;
    color: var(--gray-text);
    margin-bottom: 5px;
}

.sentiment-last-updated {
    text-align: center;
    font-size: 0.8rem;
    color: var(--gray-text);
    margin-bottom: 15px;
}

.social-trends {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.social-trend {
    text-align: center;
    padding: 20px;
    background-color: #f9fafb;
    border-radius: 8px;
}

.social-trend i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.trend-label {
    display: block;
    color: var(--gray-text);
    margin-bottom: 10px;
}

.trend-value {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.trend-change {
    font-size: 0.9rem;
    padding: 3px 8px;
    border-radius: 4px;
    display: inline-block;
}

.trend-up {
    background-color: rgba(14, 203, 129, 0.1);
    color: var(--success-color);
}

.trend-down {
    background-color: rgba(246, 70, 93, 0.1);
    color: var(--danger-color);
}

/* 下载部分 */
.download-section {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #131722 100%);
    color: var(--light-text);
    text-align: center;
}

/* FAQ部分 */
.faq-section {
    background-color: var(--light-bg);
    padding: 80px 0;
}

.faq-container {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    padding: 30px;
    margin: 0 auto;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 15px;
}

.faq-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    padding: 10px 0;
}

.faq-question h3 {
    font-size: 1.1rem;
    margin-bottom: 0;
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 10px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 10px;
}

/* 汇率部分 */
.exchange-section {
    background-color: var(--light-bg);
    padding: 80px 0;
}

.exchange-rate-container {
    margin: 0 auto;
}

.exchange-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.exchange-header {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 15px 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.exchange-header i {
    color: var(--primary-color);
}

.exchange-body {
    padding: 25px 20px;
}

.exchange-rate {
    margin-bottom: 25px;
}

.rate-item {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background-color: #f9fafb;
    border-radius: 4px;
}

.rate-label {
    font-weight: 600;
    margin-right: 5px;
}

.rate-value {
    font-weight: 700;
    color: var(--secondary-color);
}

.rate-currency {
    margin-left: 5px;
    color: var(--gray-text);
}

.exchange-calculator {
    background-color: #f9fafb;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.calculator-inputs {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.input-group {
    flex: 1;
    display: flex;
}

.input-group input {
    flex: 1;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px 0 0 4px;
    font-size: 1rem;
}

.input-group select {
    width: 80px;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-left: none;
    border-radius: 0 4px 4px 0;
    background-color: #fff;
    font-size: 1rem;
}

.swap-icon {
    padding: 0 15px;
    cursor: pointer;
}

.swap-icon i {
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.swap-icon:hover i {
    transform: rotate(180deg);
}

.convert-btn {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border: none;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.convert-btn:hover {
    background-color: #e0aa0b;
}

.exchange-footer {
    background-color: #f9fafb;
    padding: 15px 20px;
    border-top: 1px solid var(--border-color);
    text-align: right;
    font-size: 0.9rem;
    color: var(--gray-text);
}

.download-desc {
    max-width: 700px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
    color: #b7bdc6;
}

.app-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.feature {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    padding: 30px 20px;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-10px);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background-color: rgba(240, 185, 11, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.feature-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.feature h3 {
    margin-bottom: 15px;
}

.feature p {
    color: #b7bdc6;
    font-size: 0.9rem;
}

.download-options {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.qr-code {
    text-align: center;
}

.qr-code img {
    width: 180px;
    height: 180px;
    background-color: #fff;
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 15px;
}

.app-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.app-btn {
    display: flex;
    align-items: center;
    background-color: #fff;
    color: var(--secondary-color);
    padding: 12px 25px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

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

.app-btn i {
    font-size: 2rem;
    margin-right: 15px;
}

.btn-text {
    text-align: left;
}

.small-text {
    display: block;
    font-size: 0.8rem;
}

.large-text {
    font-size: 1.1rem;
    font-weight: 600;
}

/* 页脚 */
footer {
    background-color: var(--secondary-color);
    color: var(--light-text);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-logo img {
    height: 30px;
    margin-bottom: 20px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 50px;
}

.footer-column h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

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

.footer-column ul li a {
    color: #b7bdc6;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #b7bdc6;
    font-size: 0.9rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background-color: var(--primary-color);
    color: var(--secondary-color);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .indicators, .market-overview, .social-trends {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .app-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.7rem;
    }
    
    .hero {
        padding: 140px 0 60px;
    }
    
    .indicators, .market-overview, .social-trends {
        grid-template-columns: 1fr;
    }
    
    .app-features {
        grid-template-columns: 1fr;
    }
    
    .download-options {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 30px;
    }
    
    /* 调整FAQ和汇率部分在小屏幕上的样式 */
    .faq-container, .exchange-rate-container {
        width: 100%;
        
    }
    
    .faq-section, .exchange-section {
        padding: 50px 0;
    }
}

@media (max-width: 576px) {
    header .container {
        flex-direction: column;
        gap: 15px;
    }
    
    nav ul {
        justify-content: center;
    }
    
    nav ul li {
        margin: 0 10px;
    }
    
    .cta-buttons {
        flex-direction: column;
        gap: 15px;
    }
    
    .price-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .analysis-tabs {
        flex-direction: column;
    }
    
    .tab {
        text-align: center;
    }
    
    /* 优化手机端价格和涨幅显示 */
    .current-price {
        flex-direction: column;
        align-items: flex-start;
    }
    
    #btc-price {
        font-size: 2rem;
        margin-right: 0;
        margin-bottom: 8px;
    }
    
    .change {
        font-size: 1rem;
        display: inline-block;
    }
    
    /* 完全重写汇率计算器的移动端样式 - 使用固定布局 */
    .exchange-calculator {
        margin-bottom: 60px;
        padding-bottom: 30px;
    }
    
    /* 使用网格布局，更现代化且可靠 */
    .calculator-inputs {
        display: grid;
        grid-template-rows: auto auto auto;
        gap: 20px;
        margin-bottom: 20px;
    }
    
    /* 输入组样式 - 使用表格布局 */
    .calculator-inputs .input-group {
        display: table;
        width: 100%;
        table-layout: fixed; /* 确保表格布局固定 */
        border-collapse: collapse;
    }
    
    /* 输入框样式 */
    .calculator-inputs .input-group input {
        display: table-cell;
        width: 100%;
        height: 44px;
        border: 1px solid #ccc;
        border-right: none;
        border-radius: 4px 0 0 4px;
        padding: 0 10px;
        font-size: 16px; /* 防止iOS自动缩放 */
        vertical-align: middle;
        box-sizing: border-box;
    }
    
    /* 下拉框包装器样式 */
    .calculator-inputs .input-group .select-wrapper {
        display: table-cell;
        width: 90px;
        height: 44px;
        vertical-align: middle;
        position: relative;
        box-sizing: border-box;
    }
    
    /* 下拉框样式 - 使用最简单的样式 */
    .calculator-inputs .input-group .select-wrapper select {
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        border-radius: 0 4px 4px 0;
        background-color: #f8f8f8;
        font-size: 16px;
        padding: 0 5px;
        text-align: center;
        appearance: none; /* 移除默认样式 */
        -webkit-appearance: none;
        -moz-appearance: none;
        background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%23131313%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
        background-repeat: no-repeat;
        background-position: right 8px center;
        background-size: 10px;
        padding-right: 25px;
    }
    
    /* 移除Firefox下拉框的默认箭头 */
    .calculator-inputs .input-group .select-wrapper select::-ms-expand {
        display: none;
    }
    
    /* 交换图标样式 */
    .calculator-inputs .swap-icon {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background-color: #f0f0f0;
        border-radius: 50%;
        margin: 10px auto;
        transform: rotate(90deg);
        cursor: pointer;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        transition: transform 0.3s ease;
    }
    
    .calculator-inputs .swap-icon i {
        color: var(--secondary-color);
        font-size: 18px;
    }
    
    .calculator-inputs .swap-icon:active {
        transform: rotate(270deg);
    }
    
    /* 转换按钮样式 */
    .convert-btn {
        display: block;
        width: 100%;
        height: 44px;
        background-color: var(--primary-color);
        color: white;
        border: none;
        border-radius: 4px;
        font-size: 16px;
        font-weight: bold;
        cursor: pointer;
        margin-top: 20px;
        transition: background-color 0.3s ease;
    }
    
    .convert-btn:hover {
        background-color: var(--secondary-color);
    }
    
    .convert-btn:active {
        transform: translateY(1px);
    }
    
    /* 确保汇率计算器下方的元素不会遮挡下拉菜单 */
    .exchange-footer {
        margin-top: 40px;
        padding-top: 20px;
        border-top: 1px solid #eee;
    }
    
    /* 添加媒体查询，确保在更大的屏幕上有不同的布局 */
    @media (min-width: 768px) {
        .calculator-inputs {
            grid-template-rows: auto;
            grid-template-columns: 1fr auto 1fr;
            align-items: center;
        }
        
        .calculator-inputs .swap-icon {
            transform: rotate(0deg);
            margin: 0 20px;
        }
        
        .calculator-inputs .swap-icon:active {
            transform: rotate(180deg);
        }
    }
}