/* ========== CSS Variables ========== */
:root {
    --primary-color: #7c3aed;
    --primary-dark: #6d28d9;
    --primary-light: #a78bfa;
    --secondary-color: #06b6d4;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    
    --container-width: 1280px;
    --sidebar-width: 280px;
}

/* ========== Reset & Base ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* ========== Header ========== */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
}

.logo i {
    margin-right: 0.5rem;
    font-size: 1.75rem;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ========== Navigation ========== */
.main-nav {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    display: flex;
    gap: 2rem;
    padding: 0 1rem;
    max-width: var(--container-width);
    margin: 0 auto;
}

.nav-item {
    position: relative;
    padding: 1rem 0;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color 0.2s;
    border-bottom: 2px solid transparent;
}

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

.nav-item.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.nav-item i {
    margin-right: 0.5rem;
}

/* ========== Search ========== */
.search-container {
    padding: 2rem 0;
}

.search-wrapper {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 3rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: all 0.2s;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

/* ========== Content ========== */
.content {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

.section-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* ========== Cards ========== */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    transition: all 0.2s;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.card-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.25rem;
}

.card-icon.primary { background: rgba(124, 58, 237, 0.1); color: var(--primary-color); }
.card-icon.secondary { background: rgba(6, 182, 212, 0.1); color: var(--secondary-color); }
.card-icon.success { background: rgba(16, 185, 129, 0.1); color: var(--success-color); }
.card-icon.warning { background: rgba(245, 158, 11, 0.1); color: var(--warning-color); }

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* ========== Detail View ========== */
.detail-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
}

.sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
}

.sidebar-section {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.sidebar-title {
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.sidebar-list {
    list-style: none;
}

.sidebar-item {
    padding: 0.5rem;
    margin: 0.25rem 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background 0.2s;
}

.sidebar-item:hover {
    background: var(--bg-tertiary);
}

.sidebar-item.active {
    background: rgba(124, 58, 237, 0.1);
    color: var(--primary-color);
}

.main-content {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 2rem;
}

/* ========== Utilities ========== */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .detail-container {
        grid-template-columns: 1fr;
    }
    
    .sidebar {
        position: static;
    }
    
    .section-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-container {
        overflow-x: auto;
        gap: 1rem;
    }
}

/* ========== Additional Styles ========== */

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.stat {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Search Results Dropdown */
.search-box {
    position: relative;
    max-width: 600px;
    margin: 0 auto;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: 0.5rem;
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 1000;
}

.search-result-item {
    padding: 0.75rem 1rem;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
}

.search-result-item:hover {
    background: var(--bg-tertiary);
}

.result-title {
    font-weight: 500;
    color: var(--text-primary);
}

.result-meta {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.no-results {
    padding: 1rem;
    text-align: center;
    color: var(--text-secondary);
}

/* Highlight Cards */
.highlight-card {
    cursor: pointer;
}

.card-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Category Sections */
.category {
    margin-bottom: 3rem;
}

.category-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Workflow Steps */
.workflow-steps {
    margin-top: 1rem;
}

.workflow-step {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
}

.step-number {
    width: 2rem;
    height: 2rem;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 1rem;
}

/* Lists */
.list-section {
    margin: 2rem 0;
}

.list-section h3 {
    margin-bottom: 1rem;
}

.list-section ul {
    list-style-position: inside;
    color: var(--text-secondary);
}

/* Database List */
.database-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.database-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s;
}

.database-item:hover {
    background: var(--bg-secondary);
    transform: translateX(4px);
}

.database-name {
    font-weight: 600;
}

.database-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Resources */
.resources {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 1rem;
}

.resource-section h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.resource-link {
    display: block;
    padding: 0.5rem 0;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.875rem;
}

.resource-link:hover {
    text-decoration: underline;
}

/* Pathways Section */
.pathways {
    margin: 2rem 0;
}

.pathway-section {
    background: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.pathway-section h4 {
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
}

.pathway-details {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.pathway-row {
    display: flex;
    margin-bottom: 0.5rem;
}

.pathway-key {
    font-weight: 500;
    color: var(--text-primary);
    margin-right: 0.5rem;
    min-width: 120px;
}

.pathway-value {
    color: var(--text-secondary);
    flex: 1;
}

/* Enhanced List Sections */
.list-section.primary {
    border-left: 3px solid var(--primary-color);
    padding-left: 1rem;
    background: rgba(124, 58, 237, 0.05);
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.list-section.default {
    padding-left: 1rem;
}

/* Improved responsive design for complex structures */
@media (max-width: 768px) {
    .pathway-row {
        flex-direction: column;
    }
    
    .pathway-key {
        min-width: auto;
        margin-bottom: 0.25rem;
    }
}

/* Enhanced Database List */
.database-item {
    gap: 1rem;
}

.database-item i:first-child {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.database-item i:last-child {
    color: var(--text-light);
    margin-left: auto;
}

/* Smooth transitions */
.pathway-section {
    transition: transform 0.2s, box-shadow 0.2s;
}

.pathway-section:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Color variations for different list types */
.list-section h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.list-section ul {
    list-style-type: none;
    padding-left: 0;
}

.list-section ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.list-section ul li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* ========== Generic Section Styling ========== */
.generic-section, .nested-section {
    margin: 2rem 0;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.generic-section h3, .nested-section h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
    font-size: 1.25rem;
}

.generic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.generic-item {
    padding: 0.75rem;
    background: white;
    border-radius: 6px;
    border-left: 3px solid var(--primary-color);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.generic-label {
    font-weight: 600;
    color: #34495e;
    margin-bottom: 0.25rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.generic-value {
    color: #555;
    line-height: 1.6;
}

/* Nested sections (for technologies, platforms, etc.) */
.nested-categories {
    display: grid;
    gap: 1.5rem;
}

.nested-category {
    background: white;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid #e5e7eb;
}

.nested-category h4 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
    font-size: 1.125rem;
}

.nested-details {
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: var(--radius-sm);
}

.nested-details dt {
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 0.5rem;
}

.nested-details dd {
    margin-left: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Info items for standalone values */
.info-item {
    padding: 0.5rem 1rem;
    background: var(--bg-tertiary);
    margin: 0.5rem 0;
    border-radius: var(--radius-sm);
}

.info-item strong {
    color: var(--text-primary);
    margin-right: 0.5rem;
}