/* 基本樣式 */
body {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 50%, #90caf9 100%);
    min-height: 100vh;
    color: #2c3e50;
    font-family: 'Arial', sans-serif;
    margin: 0;
}

/* 頁面容器 */
.container {
    max-width: 72rem;
    margin: 0 auto;
    padding: 1rem;
}

/* 標題樣式 */
h1 {
    color: #31388d;
    text-align: center;
    margin: 20px 0;
    font-size: 2.5em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

h2 {
    color: #31388d;
    text-align: center;
    border-bottom: 2px solid #90caf9;
    padding-bottom: 10px;
    margin-top: 40px;
    font-size: 1.8em;
}

/* 事件卡片 */
.event-card {
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(5px);
    border-radius: 0.75rem;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.event-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
}

/* 按鈕樣式 */
.btn-calendar {
    background: linear-gradient(45deg, #64b5f6, #42a5f5);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    box-shadow: 0 2px 8px rgba(33, 150, 243, 0.2);
}

.btn-calendar:hover {
    background: linear-gradient(45deg, #42a5f5, #2196f3);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(33, 150, 243, 0.3);
}

.btn-details {
    background: linear-gradient(45deg, #e3f2fd, #bbdefb);
    color: #42a5f5;
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    box-shadow: 0 2px 8px rgba(187, 222, 251, 0.2);
}

.btn-details:hover {
    background: linear-gradient(45deg, #bbdefb, #90caf9);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(187, 222, 251, 0.3);
}

/* 按鈕群組 */
.button-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    margin-top: 1rem;
}

/* 頁尾 */
footer {
    margin-top: 60px;
    text-align: center;
    font-size: 0.9em;
    color: #31388d;
    width: 100%;
    padding: 20px 0;
    background: rgba(255, 255, 255, 0.8);
}

/* RWD 支援 */
@media (max-width: 768px) {
    h1 {
        font-size: 2em;
    }
    h2 {
        font-size: 1.5em;
    }
    .event-card {
        padding: 1rem;
    }
    .button-group {
        flex-direction: column;
    }
}

/* 返回按鈕 */
.back-link {
    display: inline-block;
    margin-top: 1rem;
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.back-link:hover {
    color: #1d4ed8;
}

/* 全部下載按鈕 */
.download-all {
    text-align: center;
    margin: 40px 0;
}

.download-all a {
    display: inline-block;
    padding: 15px 30px;
    background: linear-gradient(45deg, #64b5f6, #42a5f5);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.2);
}

.download-all a:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(33, 150, 243, 0.3);
    background: linear-gradient(45deg, #42a5f5, #2196f3);
}