:root{color-scheme:light;font-family:Inter,Segoe UI,sans-serif;line-height:1.35;color:#1d1f23;background:#f0f3f8}*{box-sizing:border-box}body{margin:0;background:radial-gradient(circle at top right,#edf6ff,#f6f7fb 60%);min-height:100vh}a{color:#1f5bbd;text-decoration:none}button,input,select{font:inherit}button{border:0;border-radius:8px;background:#1f5bbd;color:#fff;padding:10px 14px;cursor:pointer}button.secondary{background:#5f6878}button:disabled{cursor:not-allowed;opacity:.6}input,select{width:100%;border:1px solid #c8d0dc;border-radius:8px;padding:9px 10px;background:#fff}label{display:grid;gap:6px;font-weight:600}.auth-card{width:min(460px,calc(100vw - 32px));margin:48px auto;background:#fff;border-radius:12px;padding:22px;box-shadow:0 10px 30px #00000014;display:grid;gap:14px}.auth-card form{display:grid;gap:12px}.muted{color:#646d7d}.error-box{border:1px solid #e6a4ad;background:#fff0f2;color:#8a2130;border-radius:8px;padding:10px 12px}.centered{padding:60px 24px;text-align:center}.app-shell{min-height:100vh;display:grid;grid-template-rows:auto 1fr}.topbar{display:flex;align-items:center;justify-content:space-between;padding:14px 22px;background:#0f1728;color:#fff}.topbar .brand h1{margin:0;font-size:1.1rem}.nav{display:flex;align-items:center;gap:14px}.nav a{color:#d6e5ff}.nav button{background:#243659}.content{padding:22px}.courses-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}.course-card,.panel,.question-card,.detail-card{background:#fff;border:1px solid #dde3ee;border-radius:12px;padding:14px}.course-card h3{margin-top:0}.meta-list{margin:0;padding-left:18px;color:#3f4a5c}.actions-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:12px}.btn-link{display:inline-flex;align-items:center;justify-content:center;border:1px solid #2b61bc;color:#2b61bc;border-radius:8px;padding:9px 12px;background:#fff}.course-layout{display:grid;gap:16px;grid-template-columns:2fr 1fr;align-items:start}.course-main{display:grid;gap:14px}.materials-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}.materials-list li{display:grid;gap:2px}.materials-list small{color:#64748b}video{width:100%;border-radius:10px;background:#000}.test-header-row{display:flex;justify-content:space-between;align-items:center;gap:12px}.timer-group{display:flex;gap:10px;color:#334155}.options-list{display:grid;gap:10px;margin-top:10px}.option-item{display:flex;align-items:center;gap:10px;font-weight:500}.option-item input{width:auto}.dragdrop-grid,.multi-step-block,.case-study-block{display:grid;gap:12px}.dragdrop-row{display:grid;gap:8px}.step-card{border:1px solid #e3e7f0;border-radius:10px;padding:10px}.scenario-box{padding:10px;border-radius:10px;background:#eef4ff;border:1px solid #d4e0fa}.summary-grid{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin-bottom:12px}.summary-item{background:#fff;border-radius:10px;border:1px solid #e1e6ee;padding:10px;display:grid;gap:6px}.module-breakdown,.details-list{display:grid;gap:10px;padding:0;list-style:none}.module-breakdown li{background:#fff;border:1px solid #e1e6ee;border-radius:10px;padding:10px;display:flex;justify-content:space-between}.detail-card.ok{border-left:4px solid #17893b}.detail-card.ko{border-left:4px solid #b8263f}.table-wrap{overflow:auto;margin-top:12px}table{width:100%;border-collapse:collapse;background:#fff;border-radius:12px;overflow:hidden}th,td{border:1px solid #e5e8ef;padding:8px 10px;text-align:left;white-space:nowrap}th{background:#f5f7fb}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;display:grid;place-items:center;padding:16px}.modal-card{width:min(420px,100%);background:#fff;border-radius:12px;padding:16px;display:grid;gap:10px}@media(max-width:960px){.course-layout{grid-template-columns:1fr}.topbar{flex-direction:column;align-items:flex-start;gap:10px}}