:root {
    --primary-color: #8B0000;
    --secondary-color: #DAA520;
    --text-color: #333;
}

body {
    font-family: 'Microsoft JhengHei', 'Noto Sans TC', sans-serif;
    color: var(--text-color);
}

/* Navigation */
.navbar {
    background-color: var(--primary-color) !important;
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('/static/images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    position: relative;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section-title {
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background-color: var(--secondary-color);
}

/* About Section */
.about-image {
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.about-image:hover {
    transform: scale(1.02);
}

/* Buttons */
.btn-custom {
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    border: none;
    transition: all 0.3s ease;
}

.btn-custom:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

/* Feature Boxes */
.feature-box {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    margin-bottom: 2rem;
}

.feature-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* Footer */
footer {
    background-color: var(--primary-color);
    color: white;
    padding: 3rem 0;
}

.footer-title {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    margin-right: 1rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--secondary-color);
}

/* Page Header (for sub-pages) */
.page-header {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('/static/images/timeline-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 40vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    margin-bottom: 4rem;
}

.page-title {
    font-size: 3rem;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

/* Timeline */
.timeline {
    position: relative;
    padding: 20px 0;
    max-width: 1200px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    width: 2px;
    background: var(--primary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1px;
}

.timeline-item {
    padding: 20px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.timeline-year {
    font-weight: bold;
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.timeline-year::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--secondary-color);
    border-radius: 50%;
    right: -40px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.timeline-item:nth-child(even) .timeline-year::after {
    left: -40px;
    right: auto;
}

.timeline-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.timeline-description {
    color: #666;
    line-height: 1.6;
}

.timeline-image {
    margin-top: 1rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}

.timeline-image img {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.timeline-image:hover img {
    transform: scale(1.05);
}

/* Contact Page Styles */
.contact-header {
    background-image: url('/static/images/contact-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-color: #343a40;
    color: white;
    position: relative;
}

.contact-header::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    background-color: rgba(0, 0, 0, 0.5);
}

.contact-section .card {
    border: none;
    transition: transform 0.3s ease;
}

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

.contact-icon {
    width: 40px;
    height: 40px;
    background-color: #007bff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
}

.social-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.social-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    transition: all 0.3s ease;
}

.social-icon:hover {
    transform: scale(1.1);
}

.facebook {
    background-color: #1877F2;
}

.whatsapp {
    background-color: #25D366;
}

.instagram {
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
}

.youtube {
    background-color: #FF0000;
}

.xiaohongshu {
    background-color: #FE2C55;
}

.google-map {
    width: 100%;
    overflow: hidden;
    border-radius: 0.25rem;
}

.btn-primary {
    background-color: #007bff;
    border-color: #007bff;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0069d9;
    border-color: #0062cc;
    transform: translateY(-2px);
}

/* Footer Styles */
.footer {
    background-color: #212529;
}

/* Certificates Page Styles */
.certificate-card {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    background-color: white;
    transition: all 0.3s ease;
    height: 100%;
}

.certificate-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.certificate-image {
    position: relative;
    overflow: hidden;
}

.certificate-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.certificate-card:hover .certificate-image img {
    transform: scale(1.05);
}

.certificate-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.certificate-image:hover .certificate-overlay {
    opacity: 1;
}

.certificate-details {
    padding: 20px;
}

.certificate-details h5 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.certificate-filters .btn-group {
    border-radius: 30px;
    overflow: hidden;
}

.certificate-filters .btn {
    border-radius: 0;
    padding: 10px 20px;
    transition: all 0.3s ease;
}

.certificate-filters .btn.active {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }

    .timeline::before {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }

    .timeline-year::after {
        left: -40px;
        right: auto;
    }

    .certificate-filters .btn-group {
        width: 100%;
    }

    .certificate-filters .btn {
        padding: 8px 15px;
        font-size: 14px;
    }
}