/* 基本重置和全域樣式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 導航欄樣式 */
.navbar {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 24px;
    font-weight: bold;
    color: #4285f4;
    text-decoration: none;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 10px 15px;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    background-color: #4285f4;
    color: white;
}

/* 主要內容樣式 */
main {
    min-height: calc(100vh - 140px);
    padding-bottom: 40px;
}

/* Hero 區域 */
.hero {
    background: linear-gradient(135deg, #4285f4, #34a853);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

.hero-buttons {
    margin-top: 30px;
}

.btn {
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background-color: white;
    color: #4285f4;
}

.btn-primary:hover {
    background-color: #f8f9fa;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 功能特色區域 */
.features {
    padding: 80px 0;
    background-color: white;
}

.features h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    background-color: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
    color: #4285f4;
}

.feature-card p {
    color: #666;
    font-size: 16px;
}

/* 關於區域 */
.about {
    padding: 80px 0;
    background-color: #f8f9fa;
}

.about h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 30px;
    color: #333;
}

.about p {
    text-align: center;
    font-size: 18px;
    max-width: 800px;
    margin: 0 auto;
    color: #666;
}

/* 政策頁面樣式 */
.policy-page {
    background-color: white;
    padding: 40px 0;
}

.policy-page h1 {
    font-size: 36px;
    color: #333;
    margin-bottom: 10px;
    text-align: center;
}

.last-updated {
    text-align: center;
    color: #666;
    font-style: italic;
    margin-bottom: 40px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e9ecef;
}

.policy-section {
    margin-bottom: 40px;
}

.policy-section h2 {
    font-size: 24px;
    color: #4285f4;
    margin-bottom: 15px;
    padding-top: 20px;
}

.policy-section h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
    margin-top: 20px;
}

.policy-section p {
    margin-bottom: 15px;
    line-height: 1.7;
    color: #555;
}

.policy-section ul {
    margin: 15px 0;
    padding-left: 25px;
}

.policy-section li {
    margin-bottom: 8px;
    color: #555;
}

/* 頁腳樣式 */
footer {
    background-color: #333;
    color: white;
    padding: 40px 0;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #4285f4;
}

.footer-section p {
    color: #ccc;
    font-size: 14px;
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #4285f4;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 15px 20px;
    }

    .nav-menu {
        margin-top: 15px;
        gap: 15px;
    }

    .hero h1 {
        font-size: 36px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .container {
        padding: 0 15px;
    }

    .policy-page h1 {
        font-size: 28px;
    }

    .policy-section h2 {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .nav-menu {
        flex-direction: column;
        gap: 10px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero h1 {
        font-size: 28px;
    }

    .features, .about {
        padding: 60px 0;
    }

    .btn {
        padding: 10px 25px;
        font-size: 14px;
    }
}

/* 動畫效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.policy-section {
    animation: fadeIn 0.6s ease-out;
}

/* 可訪問性改善 */
.btn:focus,
.nav-link:focus {
    outline: 2px solid #4285f4;
    outline-offset: 2px;
}

/* 打印樣式 */
@media print {
    .navbar,
    footer,
    .hero-buttons {
        display: none;
    }

    body {
        background-color: white;
        color: black;
    }

    .policy-page {
        background-color: white;
    }
}