/* 
 * Tech Directory Application Styles
 * Modern Tech Theme - Orange Style
 * Colors:
 * - Primary: #FF6D00 (orange)
 * - Secondary: #FF9800 (lighter orange)
 * - Background: #121212 (dark mode)
 * - Text: #FFFFFF (white text)
 * - Border: #333333 (dark grey)
 * - Accent: #FFC107 (amber)
 */

:root {
    /* Dark mode colors - default */
    --primary-color: #FF6D00;
    --secondary-color: #FF9800;
    --background-color: #121212;
    --surface-color: #1E1E1E;
    --surface-color-light: #2C2C2C;
    --text-color: #FFFFFF;
    --text-color-secondary: rgba(255, 255, 255, 0.7);
    --border-color: #333333;
    --accent-color: #FFC107;
    --accent-color-hover: #FFB300;
    --success-color: #66BB6A;
    --warning-color: #FFAB00;
    --error-color: #FF5252;
    --card-bg: #1E1E1E;
    --hover-bg: #2A2A2A;
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --border-radius-sm: 4px;
    --border-radius: 8px;
    --border-radius-lg: 16px;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    --transition-speed: 0.2s;
}

/* Light theme variables */
html[data-theme="light"] {
    --primary-color: #FF6D00;
    --secondary-color: #FF9800;
    --background-color: #F5F5F5;
    --surface-color: #FFFFFF;
    --surface-color-light: #FAFAFA;
    --text-color: #212121;
    --text-color-secondary: rgba(0, 0, 0, 0.7);
    --border-color: #E0E0E0;
    --card-bg: #FFFFFF;
    --hover-bg: #F5F5F5;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', 'JetBrains Mono', 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
    transition: background-color var(--transition-speed);
}

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color var(--transition-speed), transform var(--transition-speed);
    position: relative;
    padding-bottom: 2px;
}

a:hover {
    color: var(--accent-color);
    text-decoration: none;
}

a:after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--accent-color);
    transition: width var(--transition-speed);
}

a:hover:after {
    width: 100%;
}

button, 
.btn {
    cursor: pointer;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-speed);
    letter-spacing: 0.3px;
    text-transform: uppercase;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

button:hover,
.btn:hover {
    background-color: #FF8F00;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    text-decoration: none;
}

button:active,
.btn:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.btn.secondary {
    background-color: var(--secondary-color);
}

.btn.secondary:hover {
    background-color: #FFB300;
}

.btn.accent {
    background-color: var(--accent-color);
}

.btn.accent:hover {
    background-color: var(--accent-color-hover);
}

.btn.outline {
    background-color: transparent;
    color: var(--secondary-color);
    border: 1px solid var(--secondary-color);
    box-shadow: none;
}

.btn.outline:hover {
    background-color: rgba(3, 218, 198, 0.1);
    color: var(--secondary-color);
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* Header */
.site-header {
    background-color: var(--surface-color);
    color: white;
    padding: var(--spacing-lg) var(--spacing-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    position: relative;
    overflow: hidden;
}

.site-header:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.header-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.site-title {
    text-align: left;
}

.site-title h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(120deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.site-title p {
    font-size: 1.1rem;
    opacity: 0.9;
    color: var(--text-color-secondary);
}

/* Theme toggle button */
.theme-toggle {
    display: flex;
    align-items: center;
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--surface-color-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.theme-toggle-btn:hover {
    background-color: var(--hover-bg);
    transform: translateY(-2px);
}

.theme-toggle-btn i {
    color: var(--warning-color);
    font-size: 1rem;
}

html[data-theme="light"] .theme-toggle-btn i {
    color: var(--primary-color);
}

html[data-theme="light"] .theme-toggle-btn span {
    content: 'Dark Mode';
}

/* Banner styling */
.banner {
    background: linear-gradient(90deg, rgba(255, 109, 0, 0.8), rgba(255, 152, 0, 0.8));
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    color: white;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    flex: 1;
    max-width: 60%;
}

.banner i {
    font-size: 1.5rem;
}

.banner p {
    font-size: 1rem;
    font-weight: 500;
}

/* Main Layout */
.main-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

@media (max-width: 768px) {
    .main-container {
        grid-template-columns: 1fr;
    }
}

/* Sidebar */
.sidebar {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
    position: relative;
    z-index: 1;
    height: fit-content;
}

.sidebar-section {
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-section h2 {
    font-size: 1.1rem;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sidebar-section h2 i {
    color: var(--secondary-color);
    font-size: 1rem;
}

/* Search */
.search-box-container {
    display: flex;
    justify-content: flex-end;
    flex: 1;
}

.search-box {
    position: relative;
    max-width: 500px;
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) 42px;
    background-color: var(--surface-color-light);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    color: var(--text-color);
    transition: all var(--transition-speed);
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.search-box input:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(3, 218, 198, 0.2);
}

.search-box input::placeholder {
    color: var(--text-color-secondary);
    opacity: 0.6;
}

.search-box i {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-color);
    font-size: 1.1rem;
}

/* Category Filters */
.category-filters-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--spacing-sm);
}

.reset-filters-btn {
    font-size: 0.8rem;
    padding: 4px 8px;
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    gap: 4px;
}

.reset-filters-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.reset-filters-btn i {
    font-size: 0.8rem;
}

.category-filters {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 280px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--surface-color-light);
    padding-right: var(--spacing-sm);
}

.category-filters::-webkit-scrollbar {
    width: 6px;
}

.category-filters::-webkit-scrollbar-track {
    background: var(--surface-color-light);
    border-radius: 10px;
}

.category-filters::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

.category-filter {
    display: flex;
    align-items: center;
    padding: var(--spacing-xs) 0;
}

/* Custom checkbox styling */
.category-filter input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.category-filter label {
    cursor: pointer;
    padding-left: 28px;
    position: relative;
    display: block;
    color: var(--text-color-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-speed);
    user-select: none;
}

.category-filter label:before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    border: 1px solid var(--border-color);
    background-color: var(--surface-color-light);
    border-radius: 4px;
    transition: all var(--transition-speed);
}

.category-filter input[type="checkbox"]:checked + label:before {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.category-filter label:after {
    content: '';
    position: absolute;
    left: 6px;
    top: 3px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
    opacity: 0;
    transition: opacity var(--transition-speed);
}

.category-filter input[type="checkbox"]:checked + label:after {
    opacity: 1;
}

.category-filter input[type="checkbox"]:checked + label {
    color: var(--text-color);
}

.category-filter label:hover {
    color: var(--text-color);
}

/* Sort Options */
.sort-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.sort-btn {
    text-align: center;
    padding: var(--spacing-sm);
    background-color: var(--surface-color-light);
    border: 1px solid var(--border-color);
    color: var(--text-color-secondary);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.8rem;
    transition: all var(--transition-speed);
}

.sort-btn:hover {
    background-color: rgba(255, 109, 0, 0.1);
    color: var(--text-color);
}

.sort-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Main Content */
.main-content {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.item-counter {
    color: var(--text-color-secondary);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.item-counter:before {
    content: '\f00a';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--secondary-color);
}

.view-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

@media (max-width: 768px) {
    .view-toggle {
        display: none;
    }
}

/* Pagination Controls */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: var(--spacing-lg);
    gap: var(--spacing-sm);
}

.pagination-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--border-radius);
    background-color: var(--surface-color-light);
    color: var(--text-color-secondary);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.pagination-btn:hover {
    background-color: rgba(255, 109, 0, 0.1);
    color: var(--text-color);
}

.pagination-btn.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-btn.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-ellipsis {
    color: var(--text-color-secondary);
    margin: 0 var(--spacing-xs);
}

/* Directory Items */
.directory-container {
    display: grid;
    gap: var(--spacing-lg);
    min-height: 400px;
}

/* Grid View */
.directory-container.grid-view {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* List View */
.directory-container.list-view {
    grid-template-columns: 1fr;
}

.directory-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: all var(--transition-speed);
    position: relative;
}

.directory-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    border-color: var(--primary-color);
}

.item-header {
    padding: var(--spacing-md);
    background-color: rgba(255, 109, 0, 0.1);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.item-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--border-radius);
    overflow: hidden;
    background-color: var(--surface-color-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.item-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.item-title {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.item-header h3 {
    font-size: 1.2rem;
    margin: 0;
    color: var(--text-color);
    font-weight: 600;
}

.item-category {
    background-color: rgba(3, 218, 198, 0.1);
    color: var(--secondary-color);
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 0.7rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.item-details {
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.item-description {
    color: var(--text-color-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    color: var(--text-color-secondary);
    font-size: 0.9rem;
}

.item-date {
    display: flex;
    align-items: center;
    gap: 6px;
}

.item-date i {
    color: var(--primary-color);
    font-size: 0.9rem;
}

.item-stars {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--warning-color);
    font-weight: 500;
}

.item-stars i {
    font-size: 0.9rem;
}

.item-languages {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.item-language {
    background-color: rgba(255, 109, 0, 0.08);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.item-tag {
    background-color: rgba(3, 218, 198, 0.08);
    color: var(--secondary-color);
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 500;
}

.item-action {
    margin-top: var(--spacing-md);
    display: flex;
    justify-content: flex-end;
}

.item-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    background-color: rgba(255, 109, 0, 0.1);
    color: var(--primary-color);
    font-size: 0.8rem;
    padding: 6px 12px;
    border-radius: var(--border-radius);
    transition: all var(--transition-speed);
    font-weight: 500;
}

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

.item-link:hover:after {
    display: none;
}

/* Empty State */
.no-results {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--text-color-secondary);
    min-height: 300px;
}

.no-results i {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--border-color);
    opacity: 0.7;
}

.no-results h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

.no-results p {
    font-size: 1rem;
    max-width: 300px;
    line-height: 1.5;
}

/* Error Message */
.error-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--error-color);
    min-height: 300px;
}

.error-message i {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

/* Loading Animation */
.loading-message {
    color: var(--text-color-secondary);
    text-align: center;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.loading-message i {
    color: var(--primary-color);
    font-size: 2rem;
}

/* Mobile Category Filters */
.mobile-filters-toggle {
    display: none;
    margin-bottom: var(--spacing-md);
    width: 100%;
    padding: var(--spacing-md);
    background-color: var(--surface-color-light);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 0.9rem;
    text-align: left;
    transition: all var(--transition-speed);
    justify-content: space-between;
    align-items: center;
}

.mobile-filters-toggle i {
    transition: transform var(--transition-speed);
}

.mobile-filters-toggle.active i {
    transform: rotate(180deg);
}

/* Footer */
.site-footer {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
    background-color: var(--surface-color);
    color: var(--text-color-secondary);
    font-size: 0.9rem;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

/* Responsive Adjustments */
@media (max-width: 992px) {
    .directory-container.grid-view {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .site-title h1 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .main-container {
        grid-template-columns: 1fr;
    }
    
    .header-bottom {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .banner {
        max-width: 100%;
    }
    
    .sidebar {
        margin-bottom: var(--spacing-md);
        padding: var(--spacing-md);
        display: none;
    }
    
    .sidebar.active {
        display: block;
    }
    
    .mobile-filters-toggle {
        display: flex;
    }
    
    .directory-container.grid-view {
        grid-template-columns: 1fr;
    }
    
    .toolbar {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }
    
    .item-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .site-header {
        padding: var(--spacing-md);
    }
    
    .site-title h1 {
        font-size: 1.8rem;
    }
    
    .site-title p {
        font-size: 0.9rem;
    }
    
    .search-box {
        margin-bottom: var(--spacing-md);
    }
    
    .search-box input {
        padding: 12px 12px 12px 38px;
    }
    
    .pagination {
        flex-wrap: wrap;
    }
    
    .container {
        padding: var(--spacing-sm);
    }

    .main-content {
        padding: var(--spacing-md);
    }
    
    .sidebar-section {
        margin-bottom: var(--spacing-lg);
    }
    
    .category-filters {
        max-height: 200px;
    }
    
    .item-details {
        padding: var(--spacing-md);
    }
}

/* Dark Mode Overrides */
@media (prefers-color-scheme: light) {
    :root {
        --background-color: #F5F5F5;
        --surface-color: #FFFFFF;
        --surface-color-light: #F9F9F9;
        --text-color: #212121;
        --text-color-secondary: rgba(0, 0, 0, 0.7);
        --border-color: #E0E0E0;
        --card-bg: #FFFFFF;
        --hover-bg: #F5F5F5;
    }
    
    .site-title h1 {
        -webkit-text-fill-color: var(--primary-color);
        text-shadow: none;
    }
}