:root{--bg:#fafbfc;--panel:#f8f9fa;--panel-2:#e9ecef;--text:#1a202c;--muted:#718096;--accent:#3182ce;--accent-hover:#2c5aa0;--accent-light:#bee3f8;--accent-2:#0dcaf0;--border:#e2e8f0;--card:#ffffff;--shadow:0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);--shadow-hover:0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);--shadow-card:0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);--gradient-primary:linear-gradient(135deg, rgba(49,130,206,0.1) 0%, rgba(66,153,225,0.05) 100%);--gradient-card:linear-gradient(145deg, rgba(255,255,255,0.9) 0%, rgba(248,250,252,0.4) 100%)}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:16px;line-height:1.5}
body{padding-top:100px}

/* Development Banner */
.dev-banner{background:linear-gradient(90deg, #dc2626 0%, #b91c1c 100%);color:#ffffff;padding:8px 0;font-size:12px;box-shadow:0 2px 4px rgba(0,0,0,0.1);position:fixed;top:0;left:0;right:0;z-index:30}
.dev-banner .container{display:flex;align-items:center;justify-content:space-between;padding:4px 20px}
.dev-info{display:flex;align-items:center;gap:12px}
.dev-label{display:flex;align-items:center;gap:4px;font-weight:600;text-transform:uppercase;letter-spacing:0.05em}
.dev-port{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:rgba(255,255,255,0.2);padding:2px 6px;border-radius:4px}
.sitemap-btn{background:rgba(255,255,255,0.2);color:#ffffff;text-decoration:none;padding:8px;border-radius:4px;transition:all 0.2s ease;display:flex;align-items:center;justify-content:center;width:32px;height:32px}
.sitemap-btn:hover{background:rgba(255,255,255,0.3);transform:translateY(-1px)}
.container{max-width:1200px;margin:0 auto;padding:20px}
.site-header{border-bottom:1px solid var(--border);background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);box-shadow:var(--shadow);position:fixed;top:0;left:0;right:0;z-index:20}
.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;min-height:64px}
.site-header .brand{font-weight:800;font-size:1.75rem;color:var(--accent);text-decoration:none;letter-spacing:-0.025em;display:flex;align-items:center}
.site-header .header-right{display:flex;align-items:center;gap:12px;margin-top:0}
.site-header .search{display:flex;align-items:center}
.site-header .search input{background:var(--card);border:1px solid var(--border);color:var(--text);padding:10px 16px;border-radius:8px;font-size:14px;min-width:200px}
.site-footer{border-top:1px solid var(--border);background:var(--panel);margin-top:64px;padding:24px 0}
.site-footer .container{text-align:center;color:var(--muted)}
.site-footer a{color:inherit;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.hero{padding:64px 48px;border:1px solid var(--border);background:var(--gradient-primary),var(--card);border-radius:16px;box-shadow:var(--shadow-card);margin-bottom:56px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse at top left, rgba(49,130,206,0.15) 0%, transparent 50%), radial-gradient(ellipse at bottom right, rgba(66,153,225,0.1) 0%, transparent 50%);pointer-events:none}
.hero > *{position:relative;z-index:1}
.hero h1{font-size:2.75rem;line-height:1.1;margin:0 0 20px 0;color:var(--text);font-weight:800;letter-spacing:-0.025em}
.lead{color:var(--muted);font-size:1.2rem;margin-bottom:20px;line-height:1.6}
.cta{margin-top:32px}
.cta .btn{margin-right:16px;margin-bottom:12px}
.btn{display:inline-flex;align-items:center;background:var(--accent);color:#ffffff;padding:14px 24px;border-radius:10px;text-decoration:none;border:none;cursor:pointer;font-weight:600;font-size:15px;transition:all 0.2s cubic-bezier(0.4, 0, 0.2, 1);box-shadow:var(--shadow-card);position:relative;overflow:hidden}
.btn::before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);opacity:0;transition:opacity 0.2s ease}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);background:var(--accent-hover)}
.btn:hover::before{opacity:1}
.btn.secondary{background:var(--card);color:var(--accent);border:2px solid var(--border);box-shadow:var(--shadow)}
.btn.secondary:hover{background:var(--accent-light);border-color:var(--accent);transform:translateY(-2px)}
.btn .icon{margin-right:8px}
.cards{list-style:none;padding:0;display:grid;grid-template-columns:repeat(1,minmax(0,1fr));gap:32px;margin-top:48px}
@media (min-width: 768px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width: 1200px){.cards{grid-template-columns:repeat(2,minmax(0,1fr))}}
.card{border:1px solid var(--border);background:var(--gradient-card);border-radius:16px;padding:40px;transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1);box-shadow:var(--shadow);position:relative;overflow:hidden;min-height:280px;display:flex;flex-direction:column}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%);transform:scaleX(0);transition:transform 0.3s ease;transform-origin:left}
.card:hover::before{transform:scaleX(1)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(49,130,206,0.3)}
.card-icon{width:64px;height:64px;background:var(--accent-light);border-radius:12px;display:flex;align-items:center;justify-content:center;margin-bottom:24px;color:var(--accent)}
.card h3{margin:0 0 16px 0;font-size:1.5rem;font-weight:700;line-height:1.2}
.card h3 a{color:var(--text);text-decoration:none}
.card h3 a:hover{color:var(--accent)}
.card p{color:var(--muted);line-height:1.6;margin-bottom:auto;font-size:1.1rem}
.meta{color:var(--muted);font-size:0.9rem;margin-top:24px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.syllabus{list-style:none;padding-left:0;margin:32px 0}
.syllabus li{position:relative;padding:16px 0 16px 40px;border-left:2px solid var(--border);margin-left:16px}
.syllabus li::before{content:"";position:absolute;left:-9px;top:20px;width:16px;height:16px;background:var(--accent);border-radius:50%;border:3px solid var(--bg)}
.list{list-style:none;padding:0}
.list li{padding:12px 0;border-bottom:1px solid var(--border)}
.muted{color:var(--muted)}
.back{display:inline-flex;align-items:center;margin:16px 0;color:var(--accent);text-decoration:none;font-weight:500}
.back:hover{text-decoration:underline}
.badge{display:inline-flex;align-items:center;background:rgba(13,110,253,.1);border:1px solid rgba(13,110,253,.2);color:var(--accent);border-radius:20px;padding:4px 12px;margin-right:8px;font-size:12px;font-weight:500}
.badge .icon{margin-right:4px}
.snippet{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:0.9rem}
.markdown h1,.markdown h2,.markdown h3{margin-top:2rem;color:var(--text)}
.markdown h1{font-size:2rem;margin-bottom:1rem}
.markdown h2{font-size:1.5rem;margin-bottom:0.75rem}
.markdown h3{font-size:1.25rem;margin-bottom:0.5rem}
.markdown p{margin-bottom:1rem;line-height:1.6}
.markdown pre{background:var(--panel);border:1px solid var(--border);padding:16px;border-radius:8px;overflow:auto;font-size:0.9rem}
.markdown code{background:var(--panel);border:1px solid var(--border);padding:2px 6px;border-radius:4px;font-size:0.9rem}
.markdown a{color:var(--accent);text-decoration:none}
.markdown a:hover{text-decoration:underline}
.markdown ul,.markdown ol{margin-bottom:1rem}
.markdown li{margin-bottom:0.5rem}
.search-block{margin:24px 0}
.icon{display:inline-block;vertical-align:middle}
.nav-link{display:inline-flex;align-items:center}
.nav-link .icon{margin-right:6px}
h1,h2,h3,h4,h5,h6{color:var(--text);font-weight:600;line-height:1.2}
h2{margin:2rem 0 1rem 0;font-size:1.75rem}

/* Theme Toggle */
.theme-toggle{background:none;border:2px solid var(--border);border-radius:8px;padding:8px;cursor:pointer;transition:all 0.2s ease;margin-left:12px;position:relative;width:40px;height:40px;display:flex;align-items:center;justify-content:center}
.theme-toggle:hover{border-color:var(--accent);background:var(--accent-light)}
.theme-toggle .sun-icon{display:block;color:var(--accent)}
.theme-toggle .moon-icon{display:none;color:var(--accent)}


/* Dark Theme */
[data-theme="dark"]{--bg:#0f172a;--panel:#1e293b;--panel-2:#334155;--text:#f1f5f9;--muted:#94a3b8;--accent:#60a5fa;--accent-hover:#3b82f6;--accent-light:#1e3a8a;--accent-2:#0ea5e9;--border:#334155;--card:#1e293b;--shadow:0 1px 3px rgba(0,0,0,0.3), 0 1px 2px rgba(0,0,0,0.2);--shadow-hover:0 4px 6px rgba(0,0,0,0.2), 0 2px 4px rgba(0,0,0,0.1);--shadow-card:0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);--gradient-primary:linear-gradient(135deg, rgba(96,165,250,0.1) 0%, rgba(14,165,233,0.05) 100%);--gradient-card:linear-gradient(145deg, rgba(30,41,59,0.9) 0%, rgba(15,23,42,0.4) 100%)}

[data-theme="dark"] .theme-toggle .sun-icon{display:none}
[data-theme="dark"] .theme-toggle .moon-icon{display:block}
[data-theme="dark"] .site-header{background:rgba(30,41,59,0.95);position:fixed;top:0;left:0;right:0}
[data-theme="dark"] .badge{background:rgba(96,165,250,.15);border-color:rgba(96,165,250,.3);color:#bfdbfe}
[data-theme="dark"] .card::before{background:linear-gradient(90deg, var(--accent) 0%, var(--accent-2) 100%)}
[data-theme="dark"] .card:hover{border-color:rgba(96,165,250,0.4)}

/* Modular Content Styles */
.prompt-anatomy{display:grid;grid-template-columns:1fr;gap:16px;margin:24px 0;padding:24px;background:var(--gradient-card);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}
@media (min-width: 768px){.prompt-anatomy{grid-template-columns:repeat(2,1fr)}}
@media (min-width: 1024px){.prompt-anatomy{grid-template-columns:repeat(3,1fr)}}

.prompt-anatomy > div{background:var(--card);padding:16px;border-radius:8px;border-left:4px solid var(--accent)}

.markdown table{width:100%;border-collapse:collapse;margin:24px 0;background:var(--card);border-radius:8px;overflow:hidden;box-shadow:var(--shadow)}
.markdown th,.markdown td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--border)}
.markdown th{background:var(--panel);font-weight:600;color:var(--text)}
.markdown tr:last-child td{border-bottom:none}
.markdown tr:hover{background:var(--panel)}

.section-divider{margin:48px 0;border:none;height:1px;background:linear-gradient(90deg,transparent,var(--border),transparent)}

.feature-grid{display:grid;grid-template-columns:1fr;gap:20px;margin:32px 0}
@media (min-width: 768px){.feature-grid{grid-template-columns:repeat(2,1fr)}}
@media (min-width: 1024px){.feature-grid{grid-template-columns:repeat(3,1fr)}}

.feature-card{background:var(--gradient-card);padding:24px;border-radius:12px;border:1px solid var(--border);box-shadow:var(--shadow);transition:all 0.2s ease}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.feature-card h4{margin:0 0 12px 0;color:var(--accent);font-size:1.1rem}
.feature-card p{margin:0;color:var(--muted);line-height:1.5}

.comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}
.comparison-good{background:rgba(34,197,94,0.1);border:1px solid rgba(34,197,94,0.2);padding:16px;border-radius:8px}
.comparison-bad{background:rgba(239,68,68,0.1);border:1px solid rgba(239,68,68,0.2);padding:16px;border-radius:8px}
.comparison-good::before{content:"✅ ";color:#22c55e;font-weight:bold}
.comparison-bad::before{content:"❌ ";color:#ef4444;font-weight:bold}

.process-steps{list-style:none;padding:0;margin:32px 0}
.process-steps li{position:relative;padding:16px 0 16px 60px;border-left:2px solid var(--border);margin-left:20px}
.process-steps li::before{content:counter(step-counter);counter-increment:step-counter;position:absolute;left:-12px;top:16px;width:24px;height:24px;background:var(--accent);color:white;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:12px}
.process-steps{counter-reset:step-counter}

.quick-reference{background:var(--panel);padding:24px;border-radius:12px;margin:24px 0;border-left:4px solid var(--accent)}
.quick-reference h4{margin:0 0 16px 0;color:var(--accent)}
.quick-reference ul{margin:0;padding-left:20px}
.quick-reference li{margin-bottom:8px}

.metrics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin:24px 0}
.metric-card{background:var(--card);padding:20px;border-radius:8px;border:1px solid var(--border);text-align:center}
.metric-card h4{margin:0 0 8px 0;color:var(--accent);font-size:0.9rem;text-transform:uppercase;letter-spacing:0.05em}
.metric-card .value{font-size:1.5rem;font-weight:700;color:var(--text)}

/* Dark theme overrides for new components */
[data-theme="dark"] .comparison-good{background:rgba(34,197,94,0.15);border-color:rgba(34,197,94,0.3)}
[data-theme="dark"] .comparison-bad{background:rgba(239,68,68,0.15);border-color:rgba(239,68,68,0.3)}
[data-theme="dark"] .quick-reference{background:var(--panel-2)}
[data-theme="dark"] .markdown tr:hover{background:var(--panel-2)}

/* Sitemap Styles */
.sitemap-section{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:24px;box-shadow:var(--shadow)}
.sitemap-section h2{margin:0 0 16px 0;color:var(--text);font-size:1.2rem;display:flex;align-items:center;gap:8px}
.sitemap-links{list-style:none;padding:0;margin:0}
.sitemap-links > li{margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid var(--border)}
.sitemap-links > li:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}
.sitemap-links a{color:var(--text);text-decoration:none;display:flex;align-items:center;gap:8px;font-weight:500;padding:4px 0;transition:color 0.2s ease}
.sitemap-links a:hover{color:var(--accent)}
.sitemap-sub{list-style:none;padding:0;margin:6px 0 0 24px}
.sitemap-sub li{margin:4px 0}
.sub-count{color:var(--muted);font-size:0.85rem}
.dev-info-item{color:var(--muted);display:flex;align-items:center;gap:8px;font-size:0.9rem;padding:2px 0}

/* Modular Prompt Engineering Styles */
.module-nav{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:20px;margin:32px 0;box-shadow:var(--shadow)}
.nav-sections{display:flex;flex-wrap:wrap;gap:12px}
.nav-item{display:flex;align-items:center;gap:8px;padding:8px 16px;background:var(--panel);color:var(--text);text-decoration:none;border-radius:8px;font-size:0.9rem;font-weight:500;transition:all 0.2s ease;border:1px solid var(--border)}
.nav-item:hover{background:var(--accent-light);color:var(--accent);transform:translateY(-1px)}

.module-section{margin:48px 0;padding:32px;background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}
.section-header{text-align:center;margin-bottom:32px}
.section-header h2{display:flex;align-items:center;justify-content:center;gap:12px;margin:0 0 8px 0;font-size:1.8rem}
.section-desc{color:var(--muted);font-size:1.1rem;margin:0}

.objectives-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.objective-card{background:var(--gradient-card);padding:24px;border-radius:12px;border:1px solid var(--border);text-align:center;transition:all 0.3s ease}
.objective-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.objective-icon{width:48px;height:48px;background:var(--accent-light);border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px;color:var(--accent)}
.objective-card h3{margin:0 0 12px 0;font-size:1.1rem;color:var(--text)}
.objective-card p{margin:0;color:var(--muted);line-height:1.5;font-size:0.9rem}

.architecture-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:24px;margin-bottom:32px}
.component-card{background:var(--gradient-card);border:1px solid var(--border);border-radius:12px;overflow:hidden;transition:all 0.3s ease}
.component-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.component-header{padding:16px 20px;background:var(--panel);border-bottom:1px solid var(--border)}
.component-header h3{margin:0;display:flex;align-items:center;gap:8px;color:var(--text)}
.component-content{padding:20px}
.component-content p{margin:0 0 16px 0;color:var(--muted)}
.example-box{background:var(--panel-2);padding:12px;border-radius:6px;font-size:0.85rem;border-left:3px solid var(--accent)}

.interactive-tool{background:var(--panel);padding:24px;border-radius:12px;margin-top:32px;border:1px solid var(--border)}
.interactive-tool h3{margin:0 0 20px 0;display:flex;align-items:center;gap:8px}
.prompt-builder{display:grid;gap:16px}
.builder-section{display:grid;gap:8px}
.builder-section label{font-weight:600;color:var(--text)}
.builder-section textarea{background:var(--card);border:1px solid var(--border);border-radius:6px;padding:12px;font-family:inherit;color:var(--text);resize:vertical}
.builder-output{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}
.output-box{background:var(--card);border:1px solid var(--border);padding:16px;border-radius:6px;font-family:ui-monospace,monospace;white-space:pre-wrap;color:var(--text);min-height:60px}

.patterns-tabs{background:var(--card);border:1px solid var(--border);border-radius:12px;overflow:hidden}
.tab-nav{display:flex;background:var(--panel);border-bottom:1px solid var(--border);overflow-x:auto}
.tab-btn{background:none;border:none;padding:16px 20px;color:var(--muted);font-weight:500;cursor:pointer;transition:all 0.2s ease;white-space:nowrap}
.tab-btn:hover,.tab-btn.active{background:var(--accent-light);color:var(--accent)}
.tab-content{padding:24px}
.tab-panel{display:none}
.tab-panel.active{display:block}
.tab-panel h3{margin:0 0 12px 0;color:var(--text)}
.tab-panel p{color:var(--muted);margin-bottom:16px}
.code-example{background:var(--panel-2);border:1px solid var(--border);border-radius:6px;overflow:hidden}
.code-example pre{margin:0;padding:16px;background:transparent;border:none;font-size:0.85rem}

.rubrics-container{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
@media (max-width: 768px){.rubrics-container{grid-template-columns:1fr}}
.rubric-card{background:var(--gradient-card);padding:24px;border-radius:12px;border:1px solid var(--border)}
.rubric-card h3{margin:0 0 16px 0;color:var(--text)}
.rubric-items{display:grid;gap:12px}
.rubric-item{padding:12px;background:var(--panel);border-radius:6px;border-left:3px solid var(--accent)}
.domain-rubrics{display:grid;gap:12px}
.expandable-section{background:var(--card);border:1px solid var(--border);border-radius:8px;overflow:hidden}
.expandable-section summary{padding:16px;background:var(--panel);cursor:pointer;font-weight:600;display:flex;align-items:center;gap:8px}
.expandable-section summary:hover{background:var(--accent-light);color:var(--accent)}
.rubric-content{padding:16px}
.rubric-content ul{margin:0;padding-left:20px}
.rubric-content li{margin-bottom:8px;color:var(--muted)}

.resources-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
@media (max-width: 768px){.resources-grid{grid-template-columns:1fr}}
.resource-group h3{margin:0 0 20px 0;display:flex;align-items:center;gap:8px;color:var(--text)}
.resource-list{display:grid;gap:12px}
.resource-item{display:flex;align-items:center;gap:16px;padding:16px;background:var(--gradient-card);border:1px solid var(--border);border-radius:8px;text-decoration:none;transition:all 0.2s ease}
.resource-item:hover{transform:translateY(-1px);box-shadow:var(--shadow-hover);border-color:var(--accent)}
.resource-icon{width:32px;height:32px;background:var(--accent-light);border-radius:6px;display:flex;align-items:center;justify-content:center;color:var(--accent)}
.resource-info h4{margin:0 0 4px 0;color:var(--text);font-size:0.95rem}
.resource-desc{margin:0;color:var(--muted);font-size:0.8rem}

/* Dark theme overrides */
[data-theme="dark"] .module-section{background:var(--panel)}
[data-theme="dark"] .objective-card{background:var(--gradient-card)}
[data-theme="dark"] .component-card{background:var(--gradient-card)}
[data-theme="dark"] .interactive-tool{background:var(--panel-2)}
[data-theme="dark"] .patterns-tabs{background:var(--panel)}
[data-theme="dark"] .rubric-card{background:var(--gradient-card)}
[data-theme="dark"] .expandable-section{background:var(--panel)}
[data-theme="dark"] .resource-item{background:var(--gradient-card)}

/* Modal (AI Policy) */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.6);display:none;align-items:center;justify-content:center;padding:16px;z-index:100}
.modal{background:var(--card);color:var(--text);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-card);width:min(680px, 100%);padding:20px}
.modal-header h3{margin:0 0 8px 0}
.modal-body{color:var(--text)}
.modal-body .modal-list{margin:12px 0 0 16px}
.modal-body .modal-list li{margin-bottom:8px}
.modal-actions{display:flex;align-items:center;justify-content:flex-end;margin-top:16px}