/* Global Styles */
:root {
    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --success-color: #48bb78;
    --danger-color: #f56565;
    --warning-color: #ed8936;
    --info-color: #4299e1;
    --light-color: #f7fafc;
    --dark-color: #2d3748;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', '微軟正黑體', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.6;
}

/* Navigation */
.navbar {
    transition: all 0.3s ease;
}

.navbar-brand img {
    height: 40px;
}

.navbar .nav-link {
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

.navbar .nav-link:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero-section {
    min-height: 500px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

/* Cards */
.card {
    border: none;
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* Buttons */
.btn {
    border-radius: 5px;
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

/* Forms */
.form-control, .form-select {
    border-radius: 5px;
    border: 1px solid #e2e8f0;
    padding: 0.75rem;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

/* Footer */
footer {
    background-color: #2d3748;
    color: #a0aec0;
}

footer a {
    color: #a0aec0;
    text-decoration: none;
    transition: color 0.3s ease;
}

footer a:hover {
    color: #fff;
}

.social-links a {
    font-size: 1.5rem;
    margin-right: 1rem;
}

/* Event Cards */
.event-card {
    border-radius: 10px;
    overflow: hidden;
}

.event-card .event-date {
    background: var(--primary-color);
    color: white;
    padding: 0.5rem;
    text-align: center;
}

/* Resource Cards */
.resource-card {
    position: relative;
    overflow: hidden;
}

.resource-card .resource-type {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 5px;
    font-size: 0.875rem;
}

/* Pagination */
.pagination {
    justify-content: center;
}

.page-link {
    color: var(--primary-color);
    border-radius: 5px;
    margin: 0 2px;
}

.page-link:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
    border-width: 0.3em;
}

/* Responsive Tables */
.table-responsive {
    border-radius: 10px;
    overflow: hidden;
}

/* Badges */
.badge {
    padding: 0.5em 0.75em;
    font-weight: 500;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 10px;
}

/* Modal */
.modal-content {
    border: none;
    border-radius: 15px;
}

.modal-header {
    border-bottom: none;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    border-radius: 15px 15px 0 0;
}

/* Utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.shadow-sm {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.shadow {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.shadow-lg {
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

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

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Media Queries */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
    }
    
    .navbar-brand img {
        height: 30px;
    }
    
    .card {
        margin-bottom: 1rem;
    }
}

/* Print Styles */
@media print {
    .navbar, footer, .btn, .social-links {
        display: none;
    }
    
    main {
        padding-top: 0 !important;
    }
}