/* Custom CSS Variables (基於原網站色彩) */
:root {
    --ph-blue: #1e40af;        /* 主色調 - 深藍色 */
    --ph-red: #dc2626;         /* 強調色 - 紅色 */
    --ph-yellow: #f59e0b;      /* 警告色 - 黃色 */
}

/* Bootstrap Color Overrides */
.bg-ph-blue { background-color: var(--ph-blue) !important; }
.text-ph-blue { color: var(--ph-blue) !important; }
.btn-ph-blue { 
    background-color: var(--ph-blue); 
    border-color: var(--ph-blue);
    color: white;
}
.btn-ph-blue:hover {
    background-color: color-mix(in srgb, var(--ph-blue) 85%, black);
    border-color: color-mix(in srgb, var(--ph-blue) 85%, black);
}

/* Layout Styles */
.layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

main {
    flex: 1 0 auto;
}

/* Page Header (for non-home pages) */
.page-header {
    background-color: var(--bs-light);
    padding: 1.5rem 0;
    border-bottom: 1px solid var(--bs-border-color);
}

.page-header h1 {
    margin: 0;
    font-size: 1.75rem;
}

.page-header .breadcrumb {
    margin: 0;
    background: none;
    padding: 0;
}

/* Navbar Brand Image */
.navbar-brand img {
    max-height: 40px;
    width: auto;
}

/* Card Styles (基於原網站設計) */
.card-meta {
    font-size: 0.875rem;
    color: var(--bs-secondary);
}

.card-meta .date,
.card-meta .views {
    margin-right: 1rem;
}

/* Floating Apply Button */
.btn-floating {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    transition: all 0.3s ease;
}

.btn-floating:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.2);
}

/* Search Panel */
.search-panel {
    background-color: var(--bs-light);
    border-radius: var(--bs-border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

/* Program Cards */
.program-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.program-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

/* News Cards */
.news-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.news-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

/* Pagination Styles */
.pagination .page-link {
    color: var(--ph-blue);
}

.pagination .page-item.active .page-link {
    background-color: var(--ph-blue);
    border-color: var(--ph-blue);
}

/* Statistics Section (for homepage) */
.stats-section {
    background: linear-gradient(135deg, var(--ph-blue) 0%, color-mix(in srgb, var(--ph-blue) 80%, purple) 100%);
    color: white;
}

.stat-item {
    text-align: center;
    padding: 2rem 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    display: block;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* Carousel Indicators Override */
.carousel-indicators [data-bs-target] {
    background-color: var(--ph-blue);
}

/* Table Styles (for course planning tables) */
.table-course-planning > thead > tr > th:nth-child(1),
.table-course-planning > tbody > tr > td:nth-child(1) {
    min-width: 120px;
}

.table-course-planning > thead > tr > th:nth-child(2),
.table-course-planning > tbody > tr > td:nth-child(2) {
    min-width: 180px;
}

.table-course-planning > thead > tr > th:nth-child(3),
.table-course-planning > tbody > tr > td:nth-child(3) {
    min-width: 480px;
}

/* Responsive adjustments */
@media (max-width: 767.98px) {
    .page-header {
        padding: 1rem 0;
    }
    
    .page-header h1 {
        font-size: 1.5rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}