/**
 * Cairo Standards Browser Styles
 *
 * This file contains all styles for the standards browser, organized by section:
 * 0. CSS Variables
 * 1. Core Layout & Containers
 * 2. Breadcrumbs & Navigation
 * 3. Cards (Jurisdiction, Set, Grade)
 * 4. Standards Tree & Items
 * 5. Search
 * 6. CTE Career Clusters
 * 7. Hex Map
 * 8. NGSS Three-Pillar Layout
 * 9. NGSS Discipline Cards
 * 10. ISTE Role Cards & Standards
 * 11. Atom Detail Page
 * 12. Framework Overview
 * 13. Responsive Adjustments
 */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

/* ===========================================
   0. CSS VARIABLES
   =========================================== */

:root {
    /* Primary - Navy */
    --primary-color: #1e4d6e;
    --primary-hover: #163a54;
    --primary-light: #dce8f0;

    /* Secondary - Teal */
    --secondary-color: #5ab0b8;
    --secondary-light: #d4eff2;

    /* Accent - Orange */
    --accent-color: #f0a030;
    --accent-light: #fef3c7;

    /* Backgrounds */
    --background: #f6f8fa;
    --background-warm: #eef3f7;
    --bg-secondary: #eef2f6;
    --card-bg: #ffffff;

    /* Text */
    --text-primary: #1e3a5f;
    --text-secondary: #5a7088;
    --text-muted: #8fa0b0;

    /* Borders */
    --border-color: #dce4ec;
    --border-hover: #c8d4de;

    /* Feedback */
    --success-color: #16a34a;
    --success-light: #dcfce7;
    --warning-color: #f0a030;
    --warning-light: #fef3c7;
    --error-color: #dc2626;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(30, 58, 95, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(30, 58, 95, 0.08), 0 2px 4px -2px rgba(30, 58, 95, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(30, 58, 95, 0.08), 0 4px 6px -4px rgba(30, 58, 95, 0.05);

    /* Radii - Friendly rounded corners */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
}

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

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

/* Navigation */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-brand .logo {
    height: 36px;
    width: auto;
}

.nav-brand h1 {
    display: none;
    color: var(--primary-color);
    margin: 0;
    line-height: 1.2;
}

.nav-brand .tagline {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
}

.btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 0.875rem;
}

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

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

footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* ===========================================
   1. CORE LAYOUT & CONTAINERS
   =========================================== */

.standards-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.standards-header {
    margin-bottom: 2rem;
}

.standards-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.standards-header p {
    color: var(--text-secondary);
}

/* Standards header with pin button */
.standards-header-title {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.standards-header-title h1 {
    margin-bottom: 0;
}

/* Pin Button */
.pin-button {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 0.85rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    background: var(--card-bg);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.pin-button:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

.pin-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.pin-button.loading {
    pointer-events: none;
}

.pin-button.loading .pin-icon {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.pin-button.pinned {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.pin-button.pinned:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    color: white;
}

.pin-button .pin-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.pin-button.pinned .pin-icon {
    fill: currentColor;
}

/* Standards header with bookmark button */
.standards-header-main {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.standards-header-main h1 {
    margin-bottom: 0;
}

/* Bookmark Button */
.bookmark-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    background: var(--card-bg);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.bookmark-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

.bookmark-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.bookmark-btn.bookmarked {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: white;
}

.bookmark-btn.bookmarked:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
    color: white;
}

.bookmark-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

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

/* ===========================================
   2. BREADCRUMBS & NAVIGATION
   =========================================== */

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: var(--text-secondary);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 1rem;
}

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

/* ===========================================
   3. CARDS (Jurisdiction, Set, Grade)
   =========================================== */

/* Jurisdiction Cards */
.jurisdictions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.jurisdiction-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.jurisdiction-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.jurisdiction-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

.jurisdiction-card .jurisdiction-location {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

/* Set Cards */
.sets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.set-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.set-card:hover {
    border-color: var(--primary-color);
    background: var(--background-warm);
}

.set-card h4 {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-size: 1rem;
}

.set-card .subject {
    font-size: 0.8rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.set-card .grades {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Grade Cards */
.grade-cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.grade-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.grade-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.grade-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.grade-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.grade-card-badge {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--primary-light);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    white-space: nowrap;
}

.grade-card-topics {
    list-style: none;
    padding: 0;
    margin: 0;
}

.grade-card-topics li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 0.35rem 0;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

.grade-card-topics li:last-child {
    border-bottom: none;
}

.grade-card-topics .topic-code {
    font-family: monospace;
    font-size: 0.75rem;
    color: var(--primary-color);
    background: var(--primary-light);
    padding: 0.1rem 0.4rem;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.grade-card-topics .topic-name {
    color: var(--text-primary);
}

.grade-card-more {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.75rem;
    font-style: italic;
}

.grade-card.secondary {
    grid-column: span 1;
}

/* Link wrappers for cards */
.jurisdiction-card-link,
.set-card-link,
.state-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.jurisdiction-card-link .jurisdiction-card,
.set-card-link .set-card {
    cursor: pointer;
}

/* ===========================================
   4. STANDARDS TREE & ITEMS
   =========================================== */

.standards-tree {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.standard-item {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.standard-item:last-child {
    border-bottom: none;
}

.standard-item.depth-0 { padding-left: 0; }
.standard-item.depth-1 { padding-left: 1.5rem; }
.standard-item.depth-2 { padding-left: 3rem; }
.standard-item.depth-3 { padding-left: 4.5rem; }
.standard-item.depth-4 { padding-left: 6rem; }
.standard-item.depth-5 { padding-left: 7.5rem; }

.standard-notation {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--primary-color);
    background: var(--primary-light);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-right: 0.75rem;
}

.standard-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-right: 0.5rem;
}

.standard-description {
    color: var(--text-primary);
    line-height: 1.5;
}

.standard-item.depth-0 .standard-description {
    font-weight: 600;
    font-size: 1.1rem;
}

.standard-item.depth-1 .standard-description {
    font-weight: 500;
}

.standard-comments {
    margin-top: 0.5rem;
    padding: 0.75rem;
    background: var(--background-warm);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ===========================================
   5. SEARCH
   =========================================== */

.search-box {
    margin-bottom: 1.5rem;
}

.search-box input {
    width: 100%;
    max-width: 500px;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.search-scope {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.search-container {
    margin-bottom: 1.5rem;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    max-width: 600px;
}

.search-input-wrapper input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--card-bg);
}

.search-input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(194, 65, 12, 0.1);
}

.search-icon {
    position: absolute;
    left: 0.875rem;
    color: var(--text-secondary);
    pointer-events: none;
}

.search-scope-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    margin-top: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 500;
}

.search-scope-badge .scope-icon {
    font-size: 0.875rem;
}

.search-results-container {
    margin-top: 1rem;
}

.search-results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--background-warm);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

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

.search-results-count strong {
    color: var(--text-primary);
}

.clear-search-btn {
    padding: 0.375rem 0.75rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.clear-search-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.search-results {
    margin-top: 1.5rem;
}

.search-result-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.search-result-item:hover {
    border-color: var(--primary-color);
    background: var(--background-warm);
}

.search-result-context {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.search-result-notation {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--primary-color);
    background: var(--primary-light);
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-right: 0.5rem;
}

.search-result-description {
    color: var(--text-primary);
    line-height: 1.4;
}

.search-result-description mark {
    background: #fff3cd;
    color: inherit;
    padding: 0.1rem 0.2rem;
    border-radius: 2px;
}

.search-info {
    padding: 1rem;
    background: var(--background-warm);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.clear-search {
    color: var(--primary-color);
    cursor: pointer;
    text-decoration: underline;
}

.search-loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

/* Subject filters */
.subject-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1.5rem;
}

.subject-filter {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--card-bg);
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.2s;
}

.subject-filter:hover,
.subject-filter.active {
    border-color: var(--primary-color);
    background: var(--primary-light);
    color: var(--primary-color);
}

/* ===========================================
   6. CTE CAREER CLUSTERS
   =========================================== */

.cte-section h3 {
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.cluster-group summary {
    list-style: none;
}

.cluster-group summary::-webkit-details-marker {
    display: none;
}

.cluster-group summary::before {
    content: '\25B6'; /* Right-pointing triangle */
    font-size: 0.7rem;
    margin-right: 0.5rem;
    transition: transform 0.2s;
    display: inline-block;
}

.cluster-group[open] summary::before {
    transform: rotate(90deg);
}

.cluster-group summary:hover {
    background: var(--background-warm);
}

/* ===========================================
   7. HEX MAP (US States)
   =========================================== */

.hex-map-container {
    margin: 1.5rem 0 2rem;
    overflow-x: auto;
}

.hex-map {
    display: block;
    margin: 0 auto;
    max-width: 100%;
    height: auto;
}

.hex-map .state-hex {
    fill: var(--card-bg);
    stroke: var(--border-color);
    stroke-width: 1.5;
    cursor: pointer;
    transition: all 0.15s ease;
}

.hex-map .state-hex:hover {
    fill: var(--primary-light);
    stroke: var(--primary-color);
    stroke-width: 2;
}

.hex-map .state-label {
    font-family: system-ui, -apple-system, sans-serif;
    font-size: 11px;
    font-weight: 600;
    fill: var(--text-primary);
    pointer-events: none;
    text-anchor: middle;
    dominant-baseline: central;
}

.hex-map .state-group:hover .state-label {
    fill: var(--primary-color);
}

.hex-map-legend {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* ===========================================
   8. NGSS THREE-PILLAR LAYOUT
   =========================================== */

.ngss-three-pillar {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.ngss-pillar {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
    min-height: 400px;
}

.ngss-pillar-header {
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
    text-align: center;
}

/* Practices pillar (blue) */
.ngss-pillar.practices {
    border-color: #3498db;
}

.ngss-pillar.practices .ngss-pillar-header {
    background: #e8f4fc;
    color: #2980b9;
}

/* DCI pillar (orange) */
.ngss-pillar.dci {
    border-color: #e67e22;
}

.ngss-pillar.dci .ngss-pillar-header {
    background: #fdf2e9;
    color: #d35400;
}

/* Crosscutting pillar (green) */
.ngss-pillar.crosscutting {
    border-color: #27ae60;
}

.ngss-pillar.crosscutting .ngss-pillar-header {
    background: #e8f8f0;
    color: #1e8449;
}

.ngss-pillar-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: var(--radius-sm);
    background: var(--background-warm);
    font-size: 0.85rem;
    line-height: 1.4;
    cursor: pointer;
    transition: all 0.15s ease;
}

.ngss-pillar-item:hover {
    background: var(--primary-light);
}

.ngss-pillar-item.highlighted {
    background: #fff3cd;
    box-shadow: 0 0 0 2px var(--primary-color);
}

.ngss-pillar-item .item-code {
    font-family: monospace;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--primary-color);
    display: block;
    margin-bottom: 0.25rem;
}

.ngss-pillar-item .item-text {
    color: var(--text-primary);
}

.ngss-pillar-item.depth-1 {
    margin-left: 1rem;
    font-size: 0.8rem;
}

.ngss-pillar-item.depth-2 {
    margin-left: 2rem;
    font-size: 0.75rem;
}

/* Performance Expectations section */
.ngss-pe-section {
    background: var(--card-bg);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.ngss-pe-header {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
}

.ngss-pe-item {
    padding: 1rem;
    margin-bottom: 0.75rem;
    border-radius: var(--radius-md);
    background: var(--background-warm);
    border-left: 4px solid var(--primary-color);
}

.ngss-pe-item .pe-code {
    font-family: monospace;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.ngss-pe-item .pe-text {
    line-height: 1.5;
}

.ngss-pe-item:hover {
    background: var(--primary-light);
}

/* NGSS PE Block - each PE with its pillars */
.ngss-pe-block {
    margin-bottom: 2.5rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.ngss-pe-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.ngss-pe-heading {
    background: linear-gradient(135deg, var(--primary-color) 0%, #5a3a8a 100%);
    color: white;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.25rem;
    line-height: 1.5;
}

.ngss-pe-heading .pe-code {
    font-family: monospace;
    font-weight: 700;
    font-size: 1rem;
    background: rgba(255,255,255,0.2);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-right: 0.75rem;
}

.ngss-pe-heading .pe-text {
    font-size: 1rem;
}

.ngss-empty {
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-style: italic;
    padding: 0.5rem;
}

.ngss-dci-summary {
    padding: 1rem;
    background: var(--background-warm);
    border-radius: var(--radius-md);
    border-left: 4px solid #f97316;
}

.ngss-dci-summary .dci-summary-code {
    font-weight: 700;
    color: #f97316;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.ngss-dci-summary .dci-summary-text {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Pillars inside PE blocks */
.ngss-pe-block .ngss-pillar {
    min-height: auto;
    max-height: 400px;
    overflow-y: auto;
}

.ngss-pe-block .ngss-three-pillar {
    margin-top: 0;
}

/* NGSS DCI Block */
.ngss-dci-block {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.ngss-dci-block:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.ngss-dci-heading {
    background: linear-gradient(135deg, var(--primary-color) 0%, #5a3a8a 100%);
    color: white;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.ngss-dci-heading .dci-code {
    font-family: monospace;
    font-weight: 700;
    font-size: 1.1rem;
    background: rgba(255,255,255,0.2);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    margin-right: 0.75rem;
}

.ngss-dci-heading .dci-text {
    font-size: 1rem;
}

/* PE list section */
.ngss-pe-list {
    background: var(--card-bg);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.ngss-pe-list-header {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--primary-light);
}

.ngss-pe-card {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: var(--radius-md);
    background: var(--background-warm);
    border-left: 4px solid var(--primary-color);
}

.ngss-pe-card:last-child {
    margin-bottom: 0;
}

.ngss-pe-card .pe-code {
    font-family: monospace;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.ngss-pe-card .pe-description {
    line-height: 1.5;
    margin-bottom: 0.75rem;
}

.ngss-pe-card .pe-clarification {
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: rgba(0,0,0,0.03);
    padding: 0.75rem;
    border-radius: var(--radius-sm);
    margin-top: 0.5rem;
    line-height: 1.4;
}

.ngss-pe-card .pe-clarification strong {
    color: var(--text-primary);
}

.ngss-pe-card .pe-assessment {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 0.5rem;
}

/* Clickable atom links in NGSS pillars */
.ngss-pillar-item a.atom-link,
.ngss-pe-card a.atom-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.ngss-pillar-item a.atom-link:hover,
.ngss-pe-card a.atom-link:hover {
    text-decoration: none;
}

/* ===========================================
   9. NGSS DISCIPLINE CARDS
   =========================================== */

.ngss-discipline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.ngss-discipline-card {
    display: block;
    background: var(--card-bg);
    border: 2px solid var(--discipline-color, var(--border-color));
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.ngss-discipline-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--discipline-color);
}

.discipline-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.discipline-code {
    background: var(--discipline-color);
    color: white;
    font-weight: 700;
    font-size: 0.9rem;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-md);
}

.discipline-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.discipline-dci-count {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.discipline-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.topic-chip {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    font-size: 0.8rem;
    padding: 0.35rem 0.7rem;
    border-radius: 100px;
}

/* ===========================================
   10. ISTE ROLE CARDS & STANDARDS
   =========================================== */

/* ISTE Intro section */
.iste-intro {
    background: linear-gradient(135deg, #1D3557 0%, #457B9D 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
    text-align: center;
}

.iste-intro h2 {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.iste-intro p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.iste-section-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.iste-section-title .badge {
    font-size: 0.75rem;
    font-weight: normal;
    background: var(--primary-light);
    color: var(--primary-color);
    padding: 0.25rem 0.5rem;
    border-radius: 100px;
}

/* ISTE Role Cards */
.iste-role-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.iste-role-card {
    display: block;
    background: var(--card-bg);
    border: 3px solid var(--role-color, var(--border-color));
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.iste-role-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--role-color);
}

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

.iste-role-icon {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.iste-role-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--role-color);
    margin-bottom: 0.5rem;
}

.iste-role-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 1rem;
}

.iste-role-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.iste-role-stat {
    background: var(--bg-secondary);
    padding: 0.4rem 0.75rem;
    border-radius: 100px;
}

/* ISTE Role colors */
.iste-role-card.students { --role-color: #0066CC; }
.iste-role-card.educators { --role-color: #8BC53F; }
.iste-role-card.leaders { --role-color: #E31837; }
.iste-role-card.coaches { --role-color: #F7941D; }

/* ISTE Standards with Indicators */
.iste-standard-block {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.iste-standard-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, var(--role-color) 0%, var(--role-color-dark, var(--role-color)) 100%);
    color: white;
    cursor: pointer;
}

.iste-standard-header:hover {
    filter: brightness(1.05);
}

.iste-standard-number {
    background: rgba(255,255,255,0.2);
    font-weight: 700;
    font-size: 1rem;
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-md);
}

.iste-standard-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.iste-standard-body {
    padding: 1.25rem;
}

.iste-standard-description {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.iste-indicators-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.iste-indicator {
    display: block;
    background: var(--background-warm);
    border-left: 3px solid var(--role-color);
    padding: 0.875rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    text-decoration: none;
    color: inherit;
    transition: all 0.15s ease;
    cursor: pointer;
}

.iste-indicator:hover {
    background: var(--primary-light);
    border-left-color: var(--primary-color);
}

.iste-indicator-id {
    font-family: monospace;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--role-color);
    margin-right: 0.75rem;
}

.iste-indicator-text {
    color: var(--text-primary);
    line-height: 1.5;
}

/* ===========================================
   11. ATOM DETAIL PAGE
   =========================================== */

.atom-detail {
    max-width: 900px;
}

.atom-detail-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #5a3a8a 100%);
    color: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
}

.atom-detail-header .atom-notation {
    font-family: monospace;
    font-size: 1.2rem;
    font-weight: 700;
    background: rgba(255,255,255,0.2);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-bottom: 0.75rem;
}

.atom-detail-header .atom-label {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.atom-detail-header .atom-description {
    font-size: 1.1rem;
    line-height: 1.6;
}

.atom-detail-section {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.atom-detail-section h3 {
    color: var(--primary-color);
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-light);
}

.atom-detail-section p {
    color: var(--text-primary);
    line-height: 1.6;
    margin-bottom: 0;
}

.atom-detail-section .clarification {
    background: var(--background-warm);
    padding: 1rem;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
}

.atom-detail-section .assessment {
    background: #fef3c7;
    padding: 1rem;
    border-radius: var(--radius-md);
    border-left: 4px solid #f59e0b;
    color: #92400e;
}

/* Context section */
.atom-context {
    background: var(--background-warm);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.atom-context strong {
    color: var(--text-primary);
}

.atom-context a {
    color: var(--primary-color);
}

/* Related standards */
.related-standards {
    display: grid;
    gap: 0.75rem;
}

.related-standard-card {
    background: var(--background-warm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    transition: all 0.2s ease;
}

.related-standard-card:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.related-standard-card a {
    text-decoration: none;
    color: inherit;
    display: block;
}

.related-standard-card .notation {
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--primary-color);
    background: white;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    display: inline-block;
    margin-bottom: 0.5rem;
}

.related-standard-card .description {
    font-size: 0.9rem;
    line-height: 1.4;
    color: var(--text-primary);
}

/* NGSS connections on atom detail */
.atom-connections {
    margin-top: 2rem;
}

.atom-connections h3 {
    color: var(--primary-color);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.atom-connections .ngss-three-pillar {
    margin-top: 0;
}

.atom-connections .ngss-pillar {
    min-height: 200px;
    max-height: 300px;
    overflow-y: auto;
}

/* ===========================================
   12. FRAMEWORK OVERVIEW
   =========================================== */

.framework-overview {
    margin-top: 1.5rem;
}

.grade-band-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 2rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--border-color);
}

.grade-band-header h2 {
    font-size: 1.25rem;
    margin: 0;
    color: var(--text-primary);
}

.grade-band-header .badge {
    font-size: 0.75rem;
    font-weight: normal;
    color: var(--text-secondary);
    background: var(--background-warm);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
}

.grade-band-link {
    text-decoration: none;
    color: inherit;
    display: flex;
    align-items: center;
}

.grade-band-link:hover h2 {
    color: var(--primary-color);
}

.grade-band-link h2::after {
    content: ' \2192'; /* Right arrow */
    font-size: 0.9em;
    opacity: 0;
    transition: opacity 0.2s ease;
    margin-left: 0.25rem;
}

.grade-band-link:hover h2::after {
    opacity: 1;
}

/* Document info */
.document-info {
    background: var(--background-warm);
    padding: 1rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.document-info a {
    color: var(--primary-color);
}

/* Stats bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.stat-item strong {
    color: var(--text-primary);
}

/* ===========================================
   13. RESPONSIVE ADJUSTMENTS
   =========================================== */

@media (max-width: 1024px) {
    .ngss-three-pillar {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .standards-container {
        padding: 1rem;
    }

    .iste-role-grid {
        grid-template-columns: 1fr;
    }

    .jurisdictions-grid {
        grid-template-columns: 1fr;
    }

    .sets-grid {
        grid-template-columns: 1fr;
    }

    .grade-cards-grid {
        grid-template-columns: 1fr;
    }

    .breadcrumb {
        font-size: 0.8rem;
    }
}

@media (min-width: 768px) {
    .grade-cards-grid.secondary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}