:root{color-scheme:light;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.5;font-weight:400;background:#f5f7fb;color:#172033}*{box-sizing:border-box}body{margin:0;min-width:320px;background:linear-gradient(180deg,#f7f9fc,#eef3ff)}button{font:inherit}#app{min-height:100vh}.app-shell{max-width:1200px;margin:0 auto;padding:32px 20px 48px}.hero{display:flex;justify-content:space-between;gap:24px;align-items:flex-start;margin-bottom:24px}.hero-copy h1{margin:0 0 8px;font-size:clamp(2rem,4vw,3.5rem);line-height:1.05}.hero-copy p{margin:0;max-width:58ch;color:#48536b}.hero-panel,.card,.question-card,.option-card,.presentation-stage{background:#ffffffeb;border:1px solid #d8e0f2;border-radius:18px;box-shadow:0 18px 40px #1b366514}.hero-panel{min-width:280px;padding:18px 20px}.eyebrow,.meta-label{display:inline-block;font-size:.75rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#4a63d0}.nav-row,.card-actions,.presentation-actions,.status-row{display:flex;flex-wrap:wrap;gap:12px}.nav-row{margin-bottom:24px}.layout-grid{display:grid;grid-template-columns:minmax(0,2fr) minmax(280px,1fr);gap:24px}.stack{display:grid;gap:16px}.card,.question-card,.presentation-stage{padding:20px}.card h2,.presentation-stage h2,.question-card h3{margin-top:0}.quiz-list{display:grid;gap:16px}.quiz-card-header{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.quiz-card-header h3{margin:6px 0 8px}.muted{color:#5d6983}.pill{display:inline-flex;align-items:center;padding:6px 10px;border-radius:999px;background:#e8eeff;color:#2948c7;font-size:.85rem;font-weight:600}.button{border:0;border-radius:999px;padding:10px 16px;cursor:pointer;transition:transform .12s ease,background .12s ease,opacity .12s ease}.button:hover{transform:translateY(-1px)}.button-primary{background:#3558e6;color:#fff}.button-secondary{background:#e8eeff;color:#2445c3}.button-ghost{background:#fff;color:#172033;border:1px solid #d8e0f2}.button:disabled{opacity:.5;cursor:not-allowed;transform:none}.workflow-list,.summary-list{margin:12px 0 0;padding-left:18px;color:#48536b}.question-grid,.option-grid{display:grid;gap:14px}.option-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin-top:20px}.option-card{padding:16px;border-width:2px}.editor-header{margin-bottom:20px}.input-large{display:block;width:100%;font-size:1.5rem;font-weight:700;padding:12px;border:2px solid #d8e0f2;border-radius:12px;margin-top:8px}.input-full{display:block;width:100%;padding:12px;border:1px solid #d8e0f2;border-radius:8px;font-family:inherit}.question-list{display:grid;gap:24px;margin-top:24px}.question-editor-card .question-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.option-edit-row{display:flex;align-items:center;gap:12px;margin-bottom:8px}.option-text-input{flex:1;padding:8px 12px;border:1px solid #d8e0f2;border-radius:6px}.button-icon{background:none;border:none;font-size:1.25rem;cursor:pointer;padding:0 8px;line-height:1}.text-danger{color:#d63031}.field{margin-bottom:16px}.options-editor{display:grid;gap:8px}.option-card.correct{border-color:#2ca56b;background:#ebfff4}.presentation-stage h2{font-size:clamp(1.8rem,3vw,2.8rem);margin-bottom:12px}.presentation-subtitle{margin:8px 0 0;color:#48536b}.placeholder-note{margin-top:14px;padding:14px 16px;border-radius:14px;background:#f3f6ff;color:#394662}@media(max-width:900px){.hero,.layout-grid{grid-template-columns:1fr;display:grid}.hero-panel{min-width:0}}