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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
}

/* 背景動畫效果 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%"><stop offset="0%" stop-color="rgba(255,255,255,0.1)"/><stop offset="100%" stop-color="rgba(255,255,255,0)"/></radialGradient></defs><circle cx="20" cy="20" r="2" fill="url(%23a)"><animate attributeName="cy" values="20;80;20" dur="3s" repeatCount="indefinite"/></circle><circle cx="80" cy="80" r="1.5" fill="url(%23a)"><animate attributeName="cy" values="80;20;80" dur="4s" repeatCount="indefinite"/></circle><circle cx="50" cy="50" r="1" fill="url(%23a)"><animate attributeName="cx" values="50;20;50" dur="5s" repeatCount="indefinite"/></circle></svg>') repeat;
    opacity: 0.3;
    z-index: -1;
}

.container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 900px;
    width: 90%;
    margin: 20px;
    animation: fadeInUp 0.8s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 標題區域 */
.header {
    text-align: center;
    margin-bottom: 40px;
}

.title {
    font-size: 2.5rem;
    color: #2c3e50;
    margin-bottom: 20px;
    font-weight: 300;
    letter-spacing: 2px;
}

/* 日期時間容器 */
.datetime-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.date-display, .time-display {
    background: rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 15px 25px;
    font-size: 1.2rem;
    color: #2c3e50;
    font-weight: 500;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    min-width: 200px;
    text-align: center;
}

.date-display:hover, .time-display:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* 主要內容區域 */
.main-content {
    margin-bottom: 40px;
}

.email-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.service-card {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    background: rgba(255, 255, 255, 0.95);
}

.service-link {
    text-decoration: none;
    color: inherit;
    display: block;
    text-align: center;
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.service-card h3 {
    font-size: 1.4rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 600;
}

.service-card p {
    color: #7f8c8d;
    font-size: 1rem;
    line-height: 1.5;
}

/* 頁腳 */
.footer {
    text-align: center;
    color: #7f8c8d;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    padding-top: 20px;
}

/* 響應式設計 */
@media (max-width: 768px) {
    .container {
        padding: 25px;
        margin: 10px;
    }
    
    .title {
        font-size: 2rem;
    }
    
    .datetime-container {
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }
    
    .date-display, .time-display {
        min-width: auto;
        width: 100%;
        max-width: 300px;
    }
    
    .email-services {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .service-card {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .title {
        font-size: 1.8rem;
        letter-spacing: 1px;
    }
    
    .date-display, .time-display {
        font-size: 1rem;
        padding: 12px 20px;
    }
    
    .service-icon {
        font-size: 2.5rem;
    }
    
    .service-card h3 {
        font-size: 1.2rem;
    }
}