/* styles.css - 优化版 */

/* 全局样式变量 */
:root {
    --primary-color: #0077ed;
    --secondary-color: #1d1d1f;
    --text-color: #333;
    --light-color: #f5f5f7;
    --dark-color: #343a40;
    --accent-color: #ff0000;
    --border-color: #d2d2d7;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --card-background: #ffffff;
    --transition-speed: 0.3s;
}

/* 基礎樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--light-color);
    color: var(--secondary-color);
    min-height: 100vh;
    line-height: 1.6;
}

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

/* Header样式 - Apple风格 */
.page-header {
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 9999;
    min-height: 48px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 22px;
    height: 48px;
}

.logo-section {
    display: flex;
    align-items: center;
    height: 100%;
}

.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--secondary-color);
    font-size: 21px;
    font-weight: 400;
    height: 100%;
    padding: 0 10px;
    transition: opacity 0.3s ease;
}

.logo-link:hover {
    opacity: 0.7;
}

.logo-section img {
    height: 24px;
    margin-right: 8px;
}

.site-title {
    font-size: 21px;
    font-weight: 400;
    color: var(--secondary-color);
}

.main-nav {
    flex-grow: 1;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    height: 100%;
}

.nav-menu li {
    height: 100%;
}

.nav-link {
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0 10px;
    color: var(--secondary-color);
    font-size: 12px;
    text-decoration: none;
    transition: opacity 0.3s ease;
    position: relative;
}

.nav-link:hover {
    opacity: 0.7;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--secondary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-link:hover::after {
    transform: scaleX(1);
}

.header-actions {
    display: flex;
    align-items: center;
}

.youtube-link {
    display: flex;
    align-items: center;
    color: var(--accent-color);
    font-size: 12px;
    text-decoration: none;
    padding: 0 10px;
    height: 100%;
    transition: opacity 0.3s ease;
}

.youtube-link:hover {
    opacity: 0.7;
}

.youtube-icon {
    width: 18px;
    height: 18px;
    margin-right: 5px;
}

.youtube-text {
    display: none; /* 默认隐藏文字，只在桌面端显示 */
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 18px;
    height: 14px;
    cursor: pointer;
    padding: 5px;
    margin-left: 10px;
}

.menu-toggle span {
    display: block;
    height: 1px;
    width: 100%;
    background-color: var(--secondary-color);
    border-radius: 1px;
}

/* 页面内容区域 */
.page-content {
    padding-top: 48px; /* 为固定顶部的header留出空间 */
}

.page-header-content {
    padding: 20px 0;
    text-align: center;
}

.back-link {
    display: inline-block;
    margin-bottom: 15px;
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

h1 {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.003em;
    margin: 0;
    color: var(--secondary-color);
}

h2 {
    font-size: 32px;
    font-weight: 600;
    margin-bottom: 20px;
    text-align: center;
    color: var(--secondary-color);
}

h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--secondary-color);
}

main {
    padding: 40px 0;
}

main p {
    margin-bottom: 30px;
}

/* 卡片網格樣式 */
.nav-grid, .feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 30px;
    margin-bottom: 30px;
}


.nav-card, .feature-card {
    background: var(--card-background);
    border-radius: 18px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 10px var(--shadow-color);
}

.nav-card::before, .feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #5ac8fa);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.nav-card:hover, .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px var(--shadow-color);
}

.nav-card:hover::before, .feature-card:hover::before {
    transform: translateX(0);
}

.nav-card h3, .feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--secondary-color);
    font-weight: 600;
}

.nav-card p, .feature-card p {
    color: #86868b;
    margin-bottom: 20px;
}

.nav-card a {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
}

.nav-card a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-card:hover a {
    color: var(--primary-color);
}

.nav-card:hover a::after {
    width: 100%;
}

/* YouTube 區域樣式 */
.youtube-section {
    text-align: center;
    padding: 30px 0;
    margin-bottom: 30px;
}

.youtube-section h2 {
    color: var(--secondary-color);
    margin-bottom: 30px;
    font-size: 1.8rem;
    font-weight: 600;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 560px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 30px var(--shadow-color);
}

.video-container iframe {
    width: 100%;
    height: 315px;
    border: none;
}

/* 計算機樣式 */
.calculator {
    background: var(--card-background);
    border-radius: 18px;
    padding: 40px;
    box-shadow: 0 2px 10px var(--shadow-color);
    color: var(--secondary-color);
    margin: 20px 0;
}

.calculator h2 {
    color: var(--secondary-color);
    margin-bottom: 15px;
    text-align: center;
    font-weight: 600;
}

/* 分頁標籤樣式 */
.currency-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.tab-button {
    padding: 10px 20px;
    background: none;
    border: none;
    font-size: 16px;
    cursor: pointer;
    color: #86868b;
    position: relative;
    transition: color 0.3s;
}

.tab-button.active {
    color: var(--secondary-color);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--secondary-color);
}

/* 分頁內容樣式 */
.tab-content {
    display: none;
}

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

/* 階段容器樣式 */
.phases-container {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.phase-section {
    flex: 1;
    background: var(--light-color);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--border-color);
}

.phase-title {
    color: var(--secondary-color);
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
}

.phase-number {
    background: var(--secondary-color);
    color: white;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 8px;
    font-size: 14px;
}

/* 表單樣式 */
.form-group {
    margin-bottom: 12px;
}

label {
    display: block;
    margin-bottom: 4px;
    font-weight: 500;
    color: var(--secondary-color);
    font-size: 14px;
}

input[type="number"], input[type="date"] {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: var(--card-background);
}

input[type="number"]:focus, input[type="date"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 利率輸入組樣式修復 */
.rate-input-group {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    position: relative;
}

.rate-input {
    flex: 1;
    padding-right: 25px; /* 為百分號留出空間 */
}

.rate-label {
    min-width: 60px;
    color: #86868b;
    font-size: 14px;
    flex-shrink: 0; /* 防止標籤被壓縮 */
}

.percent-sign {
    position: absolute;
    right: 12px;
    color: #86868b;
    font-size: 14px;
    pointer-events: none;
    z-index: 1;
}

/* 收益顯示樣式 */
.earnings-display {
    background: #e8f5e9;
    padding: 8px;
    border-radius: 8px;
    margin-top: 10px;
    text-align: center;
    font-weight: 500;
    color: #2e7d32;
    font-size: 14px;
}

.result {
    background: var(--light-color);
    border-radius: 12px;
    padding: 20px;
    margin-top: 20px;
}

.result-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 15px;
    text-align: center;
}

.total-result {
    background: #e3f2fd;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
}

.total-amount {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary-color);
}

/* 推薦連結區域樣式 */
.referral-section {
    background: var(--light-color);
    border-radius: 12px;
    padding: 20px;
    margin-top: 20px;
    text-align: center;
}

.referral-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.referral-code {
    font-size: 24px;
    font-weight: 600;
    color: var(--primary-color);
    margin: 10px 0;
    letter-spacing: 2px;
}

.referral-expiry {
    font-size: 14px;
    color: #86868b;
    margin-bottom: 10px;
}

.referral-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 10px;
    transition: color 0.3s ease;
    word-break: break-all;
}

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

.referral-description {
    color: #86868b;
    font-size: 14px;
    line-height: 1.5;
}

/* 備註樣式 */
.note {
    font-size: 13px;
    color: #86868b;
    margin-top: 20px;
    padding: 12px;
    background: var(--light-color);
    border-radius: 8px;
}

.note ul {
    margin-left: 20px;
    margin-top: 8px;
}

.note a {
    color: var(--primary-color);
    text-decoration: none;
    word-break: break-all;
}

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

/* 提示框樣式 */
.alert {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-background);
    padding: 20px 30px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    z-index: 1000;
    display: none;
    max-width: 400px;
    text-align: center;
}

.alert.show {
    display: block;
}

.alert-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 10px;
}

.alert-message {
    color: #86868b;
    margin-bottom: 20px;
}

.alert-button {
    padding: 8px 20px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
}

.alert-button:hover {
    background: var(--primary-color);
}

.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    display: none;
}

.overlay.show {
    display: block;
}

/* 比較工具樣式 */
.comparison-tool {
    background: var(--card-background);
    border-radius: 18px;
    padding: 25px;
    margin-top: 20px;
    box-shadow: 0 2px 10px var(--shadow-color);
    overflow: hidden;
}

.comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--light-color);
}

.comparison-header h3 {
    color: var(--secondary-color);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0;
}

.comparison-selector {
    display: flex;
    align-items: center;
    gap: 10px;
}

.comparison-selector label {
    color: #86868b;
    font-size: 14px;
    font-weight: 500;
}

.comparison-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.comparison-section {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.comparison-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    color: #86868b;
    font-size: 14px;
    font-weight: 500;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-wrapper input {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    background: var(--light-color);
    color: var(--secondary-color);
    transition: all 0.3s ease;
    padding-right: 25px; /* 為百分號留出空間 */
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--card-background);
}

.input-suffix {
    position: absolute;
    right: 15px;
    color: #86868b;
    font-size: 16px;
    pointer-events: none;
    z-index: 1;
}

/* 參考收益樣式 */
.reference-earnings {
    font-size: 12px;
    color: #86868b;
    margin-top: 5px;
    text-align: right;
    font-weight: 500;
}

.comparison-result {
    background: var(--light-color);
    border-radius: 12px;
    padding: 20px;
    margin-top: 10px;
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 0;
    border-bottom: 1px solid #e5e5e7;
}

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

.result-row.highlight {
    margin-top: 5px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    font-weight: 600;
}

.result-label {
    color: #86868b;
    font-size: 14px;
}

.result-value {
    color: var(--secondary-color);
    font-weight: 500;
    font-size: 16px;
}

.result-row.highlight .result-value {
    color: var(--primary-color);
    font-weight: 600;
}

#comparison-emoji {
    font-size: 24px;
    margin-left: 8px;
}

select {
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    background: var(--card-background);
    color: var(--secondary-color);
    transition: all 0.3s ease;
    cursor: pointer;
}

select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Footer样式 */
footer {
    background-color: var(--dark-color);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 2rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

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

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

.footer-contact {
    color: #ddd;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    grid-column: 1 / -1;
    text-align: center;
    padding-top: 1.5rem;
    margin-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-copyright {
    font-size: 0.9rem;
    color: #ddd;
}

/* 外幣定期存款回本計算機樣式 */
.calculator-container {
    max-width: 800px;
    margin: 40px auto 0;
    padding: 30px;
    background-color: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 2px 15px var(--shadow-color);
}

.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.form-col {
    flex: 1;
}

.currency-selector {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
}

.currency-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f0f0f0;
    margin: 0 10px;
    font-weight: bold;
}

.exchange-arrow {
    margin: 0 15px;
    color: #666;
}

.info-text {
    font-size: 14px;
    color: #666;
    margin-top: 5px;
}

.result-container {
    margin-top: 30px;
    padding: 20px;
    background-color: #f9f9f9;
    border-radius: 8px;
}

.result-item {
    margin-bottom: 15px;
    padding: 10px;
    border-bottom: 1px solid #eee;
}

.positive {
    color: #28a745;
    font-weight: bold;
}

.negative {
    color: #dc3545;
    font-weight: bold;
}

/* 响应式设计 */
@media (max-width: 834px) {
    .nav-menu li:not(:first-child) .nav-link,
    .youtube-text {
        display: none;
    }
    
    .youtube-link {
        padding: 0;
    }
    
    .youtube-icon {
        margin-right: 0;
    }
    
    .container {
        padding: 0 16px;
    }
    
    h1 {
        font-size: 28px;
    }
    
    h2 {
        font-size: 24px;
    }
    
    .nav-grid, .feature-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .header-container {
        padding: 0 16px;
    }
    
    .main-nav {
        position: static;
        width: 100%;
    }
    
    .nav-menu {
        position: fixed;
        top: 48px;
        left: 0;
        width: 100%;
        background-color: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        transform: translateY(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
        max-height: calc(100vh - 48px);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        transform: translateY(0);
    }
    
    .nav-menu li {
        width: 100%;
        height: auto;
        margin: 5px 0;
    }
    
    .nav-menu li .nav-link {
        display: block;
        width: 100%;
        padding: 12px 0;
        height: auto;
        font-size: 16px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .nav-menu li:first-child .nav-link {
        display: block;
        border-top: 1px solid rgba(0, 0, 0, 0.1);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .youtube-link {
        display: none;
    }
}

/* 历史数据容器样式 - 数据卡片风格 */
.historical-data-container.hibor-data-card {
    background-color: #ffffff;
    border-radius: 18px;
    padding: 24px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: 40px;
}

.historical-data-container.hibor-data-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

/* 历史数据标题样式 */
.historical-data-title {
    font-size: 24px;
    font-weight: 600;
    color: #1d1d1f;
    margin: 0;
}

/* 默认预载数据范围样式 */
.default-data-range {
    font-size: 14px;
    color: #86868b;
    padding: 8px 15px;
    background-color: #f5f5f7;
    border-radius: 8px;
    white-space: nowrap;
}

/* 历史数据控制面板样式 */
.historical-data-container .control-panel {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 20px;
    padding: 15px;
    background-color: #f5f5f7;
    border-radius: 12px;
    align-items: center;
    justify-content: center;
}

/* 历史数据表格样式 */
.historical-data-container .data-table {
    width: 100%;
    border-collapse: collapse;
    background-color: #ffffff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

/* 历史数据分页控件样式 */
.historical-data-container .pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    /* 在小屏幕上，标题和默认预载数据范围垂直排列 */
    .historical-data-container .title-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    
    .historical-data-container .control-panel {
        flex-direction: column;
        align-items: stretch;
    }
    
    .historical-data-container .control-panel label {
        justify-content: space-between;
    }
    
    .historical-data-container .data-table {
        font-size: 12px;
    }
    
    .historical-data-container .data-table th,
    .historical-data-container .data-table td {
        padding: 8px 10px;
    }
}
/* 图表容器样式 */
.charts-container {
    display: flex;
    flex-direction: column;
    gap: 30px;
    margin-top: 30px;
}

.chart-container {
    background-color: #ffffff;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.chart-container h3 {
    margin-top: 0;
    margin-bottom: 15px;
    color: #1d1d1f;
    font-size: 18px;
    font-weight: 600;
}

.chart-container canvas {
    max-height: 400px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .charts-container {
        gap: 20px;
    }
    
    .chart-container {
        padding: 15px;
    }
    
    .chart-container h3 {
        font-size: 16px;
    }
}