:root {
    --body-bg: #e6f0f7;
    --form-bg: #ffffff;
    --main-text-color: #333333;
    --primary-button-color: #6a8b71;
    --shadow-color: rgba(184, 158, 204, 0.3);
    --highlight-color: #a4614d;
}
body {
    background-color: var(--body-bg);
    color: var(--main-text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft JhengHei", "PingFang TC", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.4; /* <<<--- 在這裡設定全域行高 */
}
.header-section {
    text-align: center;
    margin-bottom: 40px;
}
.header-section img {
    max-width: 100%;
    height: auto;
}
.form-container, .info-container, .activity-tabs-container, .donation-container {
    max-width: 1145px;
    margin: 0 auto 40px;
    padding: 50px;
    border-radius: 20px;
    box-shadow: 0 8px 24px var(--shadow-color);
    background-color: var(--form-bg);
    border: 1px solid #dcd0e8;
}
.form-control, .form-select {
    border-radius: 12px;
    border-color: #dcd0e8;
    background-color: #f8f8f8;
}
.btn-primary {
    background-color: var(--primary-button-color);
    border-color: var(--primary-button-color);
}
.event-group {
    border-left: 3px solid var(--primary-button-color);
    padding-left: 15px;
    margin-bottom: 25px;
}
.event-group h5 {
    color: var(--primary-button-color);
    font-weight: bold;
}
.overall-description {
    background-color: #f0f4f8;
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid #e0e6ec;
}
.nav-tabs {
    border-bottom: none;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 30px;
}
.nav-tabs .nav-link {
    border: 1px solid #dcd0e8;
    background-color: #f0f4f8;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    padding: 15px 15px;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    color: var(--primary-button-color);
}
.nav-tabs .nav-link:hover {
    border-color: #c9b8d9;
    background-color: #e9eff5;
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.nav-tabs .nav-link.active {
    background-color: var(--primary-button-color);
    color: #ffffff;
    border-color: var(--primary-button-color);
    box-shadow: 0 5px 15px rgba(106, 139, 113, 0.4);
}
.donation-info-grid {
    background-color: #f8f9fa;
    border: 1px solid #e0e6ec;
    border-radius: 15px;
    padding: 1.5rem;
}
.donation-info-grid .info-item {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}
.donation-info-grid .info-item strong {
    font-weight: 500;
    color: #6c757d;
    font-size: 1rem;
    margin-right: 0.5rem;
}
.donation-info-grid .info-item span {
    font-weight: 600;
    font-size: 1rem;
    color: #212529;
    word-wrap: break-word;
}
.highlight-text {
     color: var(--highlight-color);
     font-weight: bold;
}
.activity-details img, .info-container img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
}
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.85);
    z-index: 1060;
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    text-align: center;
}
#loading-overlay .spinner-border {
    width: 3rem;
    height: 3rem;
}
#loading-overlay p {
    margin-top: 1rem;
    font-size: 1.1rem;
    font-weight: 500;
    color: #333;
}
.overall-description *,
.activity-details *,
.info-container *,
.px-md-3 * {
    font-family: inherit !important;
}
@media (min-width: 768px) {
    .donation-info-grid {
        padding: 2rem;
    }
}
@media (max-width: 768px) {
    .form-container, .info-container, .activity-tabs-container, .donation-container { padding: 20px; }
    .overall-description { padding: 1.5rem; }
    .nav-tabs { flex-direction: column; gap: 0.75rem; }
    .nav-tabs .nav-link { width: 100%; text-align: center; }
}