:root {
    /* Primary Colors */
    --primary-red: #cb0c0c;
    --primary-red-dark: #a00a0a;
    
    /* Text Colors */
    --text-dark: #1f2937;
    --text-medium: #4b5563;
    --text-light: #6b7280;
    --text-muted: #9ca3af;
    
    /* Background Colors */
    --bg-white: #ffffff;
    --bg-light: #f9fafb;
    --bg-gray: #f3f4f6;
    
    /* Border Colors */
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 50px;
    
    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition: 0.2s ease;
}

/* ============================================
   Breadcrumb Styles - Override Bootstrap Reboot
   ============================================ */
.breadcrumb-section {
    background-color: #fbf6f7;
    padding: 12px 0;
}

.breadcrumb-section .breadcrumb {
    margin-bottom: 0;
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    padding: 0;
    background: transparent;
}

.breadcrumb-section .breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-section .breadcrumb-item + .breadcrumb-item::before {
    content: "/";
    padding: 0 0.5rem;
    color: var(--text-light);
    font-weight: normal;
    float: none;
    background: none;
}

.breadcrumb-section .breadcrumb-item a,
.breadcrumb-section .breadcrumb-item a:link,
.breadcrumb-section .breadcrumb-item a:visited {
    color: var(--text-dark) !important;
    text-decoration: none !important;
    transition: color 0.2s ease;
    border-bottom: none !important;
    background: transparent !important;
}

.breadcrumb-section .breadcrumb-item a:hover,
.breadcrumb-section .breadcrumb-item a:focus,
.breadcrumb-section .breadcrumb-item a:active {
    color: var(--primary-red) !important;
    text-decoration: none !important;
    border-bottom: none !important;
    outline: none !important;
    background: transparent !important;
}

.breadcrumb-section .breadcrumb-item.active {
    color: var(--text-light) !important;
}

.breadcrumb-section .breadcrumb-item.active a,
.breadcrumb-section .breadcrumb-item.active a:link,
.breadcrumb-section .breadcrumb-item.active a:visited {
    color: var(--text-light) !important;
    text-decoration: none !important;
    cursor: default;
    pointer-events: none;
    background: transparent !important;
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
    padding: 1.5rem 0;
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
    text-align: center;
    margin-bottom: 1.3rem;
}

.medical-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: #fef2f2;
    color: var(--primary-red);
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-pill);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    border: 1px solid #fee2e2;
}

.page-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 1rem;
    color: var(--text-medium);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ============================================
   Search Section
   ============================================ */
.search-section {
     max-width: 700px;
    margin: 0 auto 1.5rem;
    background: #fff;
    padding: 0;
}

.search-container {
    display: flex;
    background-color: var(--bg-white);
    border-radius: var(--radius-pill);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
        height: 3.2rem;
}

.search-input {
    flex: 1;
    border: none;
    padding: 1rem 1.65rem;
    font-size: 1rem;
    color: var(--text-dark);
    outline: none;
    background-color: transparent;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    background-color: var(--primary-red);
    color: var(--bg-white);
    border: none;
    padding: 1rem 1.6rem;
    cursor: pointer;
    transition: background-color var(--transition);
}

.search-btn:hover {
    background-color: var(--primary-red-dark);
}

.search-btn i {
    font-size: 1.125rem;
}

/* ============================================
   Browse Section - Improved to Match Design
   ============================================ */
.browse-section {
    margin-bottom: 2rem;
}

.browse-container {
    background: linear-gradient(0deg, #fdfbfb 0%, #f4f5ff 100%);
    border-radius: var(--radius-lg);
    padding: 1.4rem 2.5rem;
    /* box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light); */
}

.browse-title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-light);
    letter-spacing: 0.05em;
    text-align: center;
    margin-bottom: 1.25rem;
    text-transform: uppercase;
}

.alphabet-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.625rem;
    max-width: 920px;
    margin: 0 auto;
}

.letter-btn {
    background-color: #ffffff;
    color: var(--text-dark);
    border: 0.18rem solid #d2dee9;
    border-radius: 12px;
    padding: 0.75rem 1.125rem;
    font-size: 1.16rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
    text-decoration: none !important;
}

.letter-btn:hover {
    border-color: var(--primary-red);
    color: var(--primary-red);
    box-shadow: 0 2px 4px rgba(203, 12, 12, 0.12);
    transform: translateY(-1px);
    text-decoration: none !important;
}

.letter-btn.active {
    background-color: var(--primary-red);
    color: #ffffff;
    border-color: var(--primary-red);
    box-shadow: 0 2px 8px rgba(203, 12, 12, 0.3);
    font-weight: 600;
}

/* ============================================
   Results Section - Improved
   ============================================ */
/* .results-section {
    margin-top: 3.5rem;
} */

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.2rem;
    flex-wrap: wrap;
    gap: 1.25rem;
}

.results-title {
        font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 0;
    letter-spacing: -0.01em;
}

.count-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-red);
    color: #ffffff;
    font-size: 0.92rem;
    font-weight: 700;
    padding: 0.35rem 0.65rem;
    border-radius: var(--radius-pill);
    min-width: 36px;
}

.sort-btn {
    background-color: var(--bg-white);
    color: var(--text-dark);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 0.6875rem 1.375rem;
    font-size: 0.9375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-xs);
}

.sort-btn:hover {
    border-color: var(--text-medium);
    box-shadow: var(--shadow-sm);
}

.dropdown-menu {
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 0.5rem 0;
    min-width: 220px;
}

.dropdown-item {
    padding: 0.75rem 1.25rem;
    font-size: 0.9375rem;
    color: var(--text-dark);
    transition: all var(--transition);
}

.dropdown-item:hover {
    background-color: var(--bg-gray);
    color: var(--primary-red);
}

.dropdown-item.active {
    background-color: #fef2f2;
    color: var(--primary-red);
    font-weight: 600;
}

/* ============================================
   Diagnostics Grid - Improved
   ============================================ */
.diagnostics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.75rem;
    margin-bottom: 2rem;
}

.diagnostic-card {
    background-color: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-light);
    transition: all 0.3s ease;
}

.diagnostic-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--border-medium);
}

.card-img {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: linear-gradient(135deg, #f0f1f3 0%, #e4e6e9 100%);
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-icon {
    position: absolute;
    bottom: 1.25rem;
    right: 1.25rem;
    width: 52px;
    height: 52px;
    background-color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
    display: none;
}

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

.card-icon i {
    font-size: 1.375rem;
    color: var(--primary-red);
}

.card-body {
    padding: 1.4rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.875rem;
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.card-text {
    font-size: 0.9375rem;
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.read-link {
    color: var(--primary-red);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap var(--transition);
    justify-content: center;
    opacity: 0;
}

.read-link:hover {
    gap: 0.75rem;
}

.read-link i {
    font-size: 0.75rem;
}
.diagnostic-card:hover .read-link{opacity: 1;}

/* ============================================
   Pagination
   ============================================ */
/* .pagination-nav {
    margin-top: 3.5rem;
}

.pagination {
    justify-content: center;
    gap: 0.5rem;
}

.page-link {
    color: var(--text-dark);
    background-color: var(--bg-white);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    padding: 0.625rem 1rem;
    font-weight: 500;
    transition: all var(--transition);
    min-width: 44px;
    text-align: center;
}

.page-link:hover {
    background-color: var(--primary-red);
    color: #ffffff;
    border-color: var(--primary-red);
}

.page-item.active .page-link {
    background-color: var(--primary-red);
    color: #ffffff;
    border-color: var(--primary-red);
}

.page-item.disabled .page-link {
    opacity: 0.4;
    pointer-events: none;
} */

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 991px) {
    .page-title {
        font-size: 2rem;
    }
    
    .diagnostics-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 767px) {
    .main-content {
        padding: 2.5rem 0;
    }
    
    .page-header {
        margin-bottom: 1rem;
    }
    
    .page-title {
        font-size: 1.875rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
    
    .search-section {
        margin-bottom: 1.2rem;
    }
    
    .search-input {
        padding: 0.875rem 1.5rem;
    }
    
    .search-btn {
        padding: 0.875rem 1.5rem;
    }
    
    .browse-container {
        padding: 0.8rem 1.25rem;
    }
    
    .alphabet-filter {
        gap: 0.5rem;
    }
    
    .letter-btn {
        min-width: 46px;
        height: 44px;
        padding: 0.625rem 1rem;
        font-size: 0.875rem;
    }
    
    .results-header {
         
        align-items: stretch;
        gap: 1rem;
    }
    
    .results-title {
        font-size: 0.95rem;
    }
    
    .sort-btn {
        width: 100%;
        justify-content: center;
    }
    
    .diagnostics-grid {
        grid-template-columns: 1fr;
        gap: 1.25rem;
    }
    
    .card-body {
        padding: 1.5rem 1.25rem;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 1rem;
    }
    
    .page-title {
        font-size: 1.625rem;
    }
    
    .browse-container {
        padding: 1.05rem 1rem;
    }
    
    .browse-title {
        font-size: 0.85rem;
        margin-bottom: 1.25rem;
    }
    
    .letter-btn {
        min-width: 42px;
        height: 44px;
        padding: 0.5rem 0.875rem;
    }
}

@media (min-width: 1200px) {
    .diagnostics-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}