/* Categories Page Styles */
:root {
    --primary-color: #00bcd4;
    --primary-dark: #0097a7;
    --primary-light: #4dd0e1;
    --secondary-color: #2c3e50;
    --accent-color: #34495e;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --light-color: #FFFFFF;
    --dark-color: #2c3e50;
    --text-primary: #2c3e50;
    --text-secondary: #34495e;
    --text-muted: #7f8c8d;
    --border-color: #e0f7fa;
    --section-bg: #f8f9fa;
    --light-bg: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-bg);
}

/* Navigation Styles */
.navbar {
    box-shadow: var(--shadow);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white) !important;
}

.navbar-brand:hover {
    color: var(--white) !important;
    transform: scale(1.05);
    transition: var(--transition);
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: var(--transition);
    position: relative;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
    color: var(--white) !important;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 6px;
}

.navbar-nav .nav-link.active {
    color: var(--white) !important;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 6px;
}

/* Dropdown Styles */
.dropdown-menu {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-hover);
    margin-top: 0.5rem;
    padding: 0.5rem 0;
}

.dropdown-item {
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    transition: var(--transition);
    font-size: 0.9rem;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background-color: var(--primary-color);
    color: var(--white);
}

/* Main Content */
.categories-main {
    min-height: calc(100vh - 80px);
    background-color: var(--white);
}

/* Categories Content */
.categories-content {
    padding: 2rem;
    transition: var(--transition);
}

.categories-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.categories-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--dark-color);
    margin: 0;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.categories-count {
    background: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.header-filter-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.search-filter {
    min-width: 200px;
}

.search-filter .form-control {
    border: 2px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 14px;
    font-size: 0.875rem;
    font-weight: 400;
    background-color: var(--white);
    color: var(--text-primary);
    transition: all 0.2s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.search-filter .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.1);
    outline: none;
    background-color: var(--white);
}

.search-filter .form-control:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.search-filter .form-control::placeholder {
    color: var(--text-muted);
    font-weight: 400;
}

.multi-select-filter {
    position: relative;
}

.multi-select-filter .btn {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    background: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: 6px;
    transition: all 0.2s ease;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.multi-select-filter .btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(0, 188, 212, 0.2);
}

.multi-select-filter .btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.15);
}

.multi-select-filter .btn.show {
    background: var(--primary-color);
    color: var(--white);
    box-shadow: 0 2px 6px rgba(0, 188, 212, 0.2);
}

.filter-dropdown {
    min-width: 280px;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    margin-top: 0.5rem;
    position: absolute !important;
    transform: none !important;
    top: 100% !important;
    left: 0 !important;
    right: auto !important;
}

.filter-dropdown-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1rem 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    background: var(--section-bg);
    border-radius: 12px 12px 0 0;
    gap: 1rem;
}

.filter-dropdown-header h6 {
    margin: 0;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    flex: 1;
}

.filter-dropdown-header .btn {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 4px;
    background: var(--white);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s ease;
    white-space: nowrap;
    min-width: 60px;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.filter-dropdown-header .btn:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
    transform: translateY(-1px);
}

.filter-dropdown-header .btn:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 188, 212, 0.15);
}

.filter-dropdown-body {
    padding: 1rem;
    max-height: 300px;
    overflow-y: auto;
}

.filter-group {
    margin-bottom: 1rem;
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-group-title {
    display: block;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.checkbox-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.checkbox-list .form-check {
    margin: 0;
}

/* Checkbox specific styling to prevent form submission */
.checkbox-list .form-check-input {
    border: 2px solid var(--border-color);
    border-radius: 4px;
    margin-right: 0.5rem;
    cursor: pointer;
    pointer-events: auto;
}

.checkbox-list .form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-list .form-check-input:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 188, 212, 0.25);
    outline: none;
}

.checkbox-list .form-check-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    margin: 0;
    font-weight: 500;
    user-select: none;
}

.checkbox-list .form-check-label:hover {
    color: var(--text-primary);
}

/* Categories Grid */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* Category Cards */
.category-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.category-card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
    line-height: 1.4;
}

.category-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex-grow: 1;
    font-size: 0.9rem;
}

.category-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.category-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: auto;
    /* padding-top: 1rem; */
}

.category-card hr {
    /* border: none; */
    height: 1px;
    background: var(--border-color);
    margin: 1rem 0;
}

.tag {
    background: var(--primary-color) !important;
    color: var(--white) !important;
    padding: 0.25rem 0.5rem;
    border-radius: 15px;
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.tag-compulsory {
    background: var(--info-color) !important;
}

.tag-optional {
    background: var(--secondary-color) !important;
}

.tag-topic-count {
    background: var(--success-color) !important;
    color: var(--white) !important;
    font-weight: 600;
}

.category-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.8rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: center;
    text-transform: none;
    letter-spacing: 0.025em;
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.15);
    white-space: nowrap;
    min-width: 70px;
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    line-height: 1.4;
}

.category-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.category-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #007a8a 100%);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 188, 212, 0.25);
    border-color: rgba(255, 255, 255, 0.1);
}

.category-btn:hover::before {
    left: 100%;
}

.category-btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(0, 188, 212, 0.2);
}

.category-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.25);
}

/* Footer Styles */
.footer {
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    margin-top: auto;
}

.footer h5, .footer h6 {
    color: var(--white);
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer p {
    line-height: 1.6;
}

.footer a {
    text-decoration: none;
    transition: var(--transition);
    color: rgba(255, 255, 255, 0.7);
}

.footer a:hover {
    color: var(--white) !important;
    text-decoration: underline;
}

.footer .social-links a {
    display: inline-block;
    width: 35px;
    height: 35px;
    line-height: 35px;
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: var(--transition);
}

.footer .social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.footer .contact-info p {
    margin-bottom: 0.5rem;
}

.footer .newsletter .form-control {
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 6px 0 0 6px;
}

.footer .newsletter .form-control::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.footer .newsletter .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 188, 212, 0.25);
    background: rgba(255, 255, 255, 0.15);
}

.footer .newsletter .btn {
    border-radius: 0 6px 6px 0;
    background: var(--primary-color);
    border: 1px solid var(--primary-color);
    color: var(--white);
    font-weight: 500;
}

.footer .newsletter .btn:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .categories-title {
        font-size: 2rem;
    }
    
    .categories-header {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .header-controls {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }
    
    .header-filter-container {
        flex-direction: column;
        gap: 0.75rem;
        width: 100%;
    }
    
    .search-filter {
        min-width: 100%;
    }
    
    .multi-select-filter {
        width: 100%;
    }
    
    .multi-select-filter .btn {
        width: 100%;
        justify-content: center;
    }
    
    .filter-dropdown {
        min-width: 100%;
        left: 0 !important;
        right: 0 !important;
        margin-top: 0.25rem;
    }
    
    .categories-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .categories-content {
        padding: 1rem;
    }
    
    .category-card {
        padding: 1rem;
    }
    
    .category-title {
        font-size: 1.125rem;
    }
    
    .category-description {
        font-size: 0.85rem;
    }
    
    .tag {
        font-size: 0.65rem;
        padding: 0.3rem 0.6rem;
    }
    
    .category-btn {
        padding: 10px 20px;
        font-size: 0.8rem;
        min-width: 90px;
    }
    
    .category-actions {
        flex-direction: row;
        gap: 1rem;
        align-items: center;
        justify-content: space-between;
    }
    
    .category-actions .tag {
        align-self: center;
    }
    
    .category-actions .category-btn {
        width: auto;
    }
}

@media (max-width: 576px) {
    .categories-main {
        margin-top: 70px;
    }
    
    .categories-title {
        font-size: 1.75rem;
    }
    
    .categories-content {
        padding: 0.75rem;
    }
    
    .category-tags {
        justify-content: center;
    }
    
    .category-btn {
        padding: 8px 16px;
        font-size: 0.75rem;
        min-width: 80px;
    }
    
    .category-actions {
        flex-direction: row;
        gap: 0.75rem;
        align-items: center;
        justify-content: space-between;
    }
    
    .category-actions .tag {
        align-self: center;
    }
    
    .category-actions .category-btn {
        width: auto;
    }
    
    .category-title {
        font-size: 1rem;
    }
    
    .category-description {
        font-size: 0.8rem;
    }
    
    .search-filter .form-control {
        font-size: 0.8rem;
        padding: 0.4rem 0.6rem;
    }
    
    .multi-select-filter .btn {
        font-size: 0.8rem;
        padding: 0.4rem 0.6rem;
    }
    
    .filter-dropdown-header h6 {
        font-size: 0.9rem;
    }
    
    .filter-dropdown-header .btn {
        font-size: 0.75rem;
        padding: 0.2rem 0.4rem;
    }
    
    .filter-group-title {
        font-size: 0.85rem;
    }
    
    .checkbox-list .form-check-label {
        font-size: 0.8rem;
    }
}

/* Animation Classes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.category-card {
    animation: fadeInUp 0.6s ease-out;
}

.category-card:nth-child(1) { animation-delay: 0.1s; }
.category-card:nth-child(2) { animation-delay: 0.2s; }
.category-card:nth-child(3) { animation-delay: 0.3s; }
.category-card:nth-child(4) { animation-delay: 0.4s; }
.category-card:nth-child(5) { animation-delay: 0.5s; }
.category-card:nth-child(6) { animation-delay: 0.6s; }
.category-card:nth-child(7) { animation-delay: 0.7s; }
.category-card:nth-child(8) { animation-delay: 0.8s; }
.category-card:nth-child(9) { animation-delay: 0.9s; }

/* Focus States for Accessibility */
.category-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    .category-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}

/* Ensure dropdown is visible and properly positioned */
.dropdown-menu.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.filter-dropdown.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
}

/* Fix dropdown positioning issues */
.multi-select-filter .dropdown-menu {
    position: absolute !important;
    transform: none !important;
    top: 100% !important;
    left: 0 !important;
    right: auto !important;
    margin-top: 0.5rem;
    z-index: 1050;
}

/* Ensure filter dropdown is visible */
.filter-dropdown {
    display: none;
    background: var(--white);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-hover);
    z-index: 1050;
}

.filter-dropdown.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
}

/* Prevent any form submission behavior */
.filter-dropdown form,
.filter-dropdown-body form {
    display: block;
}

.filter-dropdown input[type="checkbox"] {
    pointer-events: auto;
    cursor: pointer;
}

/* Ensure dropdown stays open when interacting with checkboxes */
.filter-dropdown.show {
    pointer-events: auto;
}

.filter-dropdown.show * {
    pointer-events: auto;
}

/* Reset button specific styling */
#header-reset-filters {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
    background: var(--white) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-secondary) !important;
    padding: 0.25rem 0.5rem !important;
    border-radius: 6px !important;
    font-size: 0.8rem !important;
    cursor: pointer !important;
    transition: var(--transition) !important;
    position: relative !important;
    z-index: 1051 !important;
}

#header-reset-filters:hover {
    background: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--white) !important;
}

#header-reset-filters:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 188, 212, 0.25) !important;
    outline: none !important;
}

/* Force dropdown visibility */
.filter-dropdown.show,
.dropdown-menu.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
}

/* Ensure dropdown content is visible */
.filter-dropdown.show .filter-dropdown-header,
.filter-dropdown.show .filter-dropdown-body {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Force dropdown visibility with higher specificity */
.multi-select-filter .filter-dropdown.show,
.multi-select-filter .dropdown-menu.show {
    display: block !important;
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
    position: absolute !important;
    top: 100% !important;
    left: 0 !important;
    right: auto !important;
    margin-top: 0.5rem !important;
    z-index: 9999 !important;
}

/* Ensure dropdown content is visible */
.multi-select-filter .filter-dropdown.show .filter-dropdown-header,
.multi-select-filter .filter-dropdown.show .filter-dropdown-body {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* Reset button with higher specificity */
.multi-select-filter .filter-dropdown-header #header-reset-filters,
.multi-select-filter .filter-dropdown-header .btn {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
    background: var(--white) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-secondary) !important;
    padding: 0.25rem 0.5rem !important;
    border-radius: 6px !important;
    font-size: 0.8rem !important;
    cursor: pointer !important;
    transition: var(--transition) !important;
    position: relative !important;
    z-index: 9999 !important;
    min-width: 60px !important;
    text-align: center !important;
}

.multi-select-filter .filter-dropdown-header #header-reset-filters:hover,
.multi-select-filter .filter-dropdown-header .btn:hover {
    background: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: var(--white) !important;
}

.multi-select-filter .filter-dropdown-header #header-reset-filters:focus,
.multi-select-filter .filter-dropdown-header .btn:focus {
    box-shadow: 0 0 0 0.2rem rgba(0, 188, 212, 0.25) !important;
    outline: none !important;
}

/* Responsive Navigation */
@media (max-width: 991.98px) {
    .navbar-collapse {
        background: rgba(0, 0, 0, 0.1);
        border-radius: 8px;
        padding: 1rem;
        margin-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
        border-radius: 6px;
        margin-bottom: 0.25rem;
    }
    
    .dropdown-menu {
        background: rgba(255, 255, 255, 0.95);
        border: none;
        box-shadow: none;
        margin-top: 0;
        padding-left: 1rem;
    }
    
    .dropdown-item {
        padding: 0.5rem 0;
        color: var(--text-primary);
    }
}

@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .navbar {
        padding: 0.5rem 0;
    }
    
    .footer .col-lg-4,
    .footer .col-lg-2,
    .footer .col-md-6 {
        text-align: center;
        margin-bottom: 2rem;
    }
    
    .footer .social-links {
        justify-content: center;
    }
    
    .footer .newsletter .input-group {
        flex-direction: column;
    }
    
    .footer .newsletter .form-control {
        border-radius: 6px;
        margin-bottom: 0.5rem;
    }
    
    .footer .newsletter .btn {
        border-radius: 6px;
        width: 100%;
    }
}

@media (max-width: 576px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .footer {
        padding: 2rem 0;
    }
    
    .footer h5 {
        font-size: 1.1rem;
    }
    
    .footer h6 {
        font-size: 1rem;
    }
    
    .footer .social-links a {
        width: 30px;
        height: 30px;
        line-height: 30px;
        font-size: 0.9rem;
    }
}

.filter-dropdown-menu-show {
    transform: none !important;
    width: 100%;
    margin-left: auto;
}

.category-card span{
    font-size: 0.7rem !important;
}