:root{--bg:#f5faf4;--card:#fff;--line:#d9e8d6;--green:#23963b;--green-dark:#155f27;--text:#102313;--muted:#657568;--warn:#b46d17;--bad:#c93d3d;--shadow:0 8px 28px rgba(30,80,35,.08)}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:linear-gradient(180deg,#f8fcf7,#eef7ed);color:var(--text)}button,input,select{font:inherit}.shell{width:min(1180px,calc(100% - 28px));margin:0 auto;padding:28px 0 48px}.hero{display:flex;gap:18px;align-items:center;margin-bottom:22px}.logo{width:72px;height:72px;object-fit:contain}.hero h1{margin:0;font-size:clamp(1.8rem,4vw,2.6rem)}.hero p{margin:5px 0 0;color:var(--muted)}.card{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:var(--shadow);margin-bottom:18px}.login-card{max-width:620px;margin-inline:auto}.hidden{display:none!important}label{font-weight:700}input,select{width:100%;padding:12px 14px;border:1px solid #bdd4b8;border-radius:12px;background:#fff;color:var(--text);outline:none}input:focus,select:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(35,150,59,.12)}button,.button-link{border:0;border-radius:12px;padding:11px 16px;background:var(--green);color:white;font-weight:750;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}button:hover,.button-link:hover{filter:brightness(.97)}button:disabled{opacity:.6;cursor:wait}.secondary{background:#f2f5f1;color:var(--text);border:1px solid var(--line)}.small{padding:8px 12px}.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.muted{color:var(--muted)}.message{padding:12px 14px;border-radius:12px;margin-top:14px;background:#eef8ec;border:1px solid var(--line)}.message.error{background:#fff0f0;border-color:#f3c7c7;color:#7f2525}.code-input{font-size:1.7rem;letter-spacing:.45em;text-align:center;font-weight:800}.toolbar{display:flex;justify-content:space-between;align-items:center;gap:18px}.eyebrow{display:block;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);font-size:.74rem;font-weight:800;margin-bottom:3px}.role-pill,.badge{display:inline-block;border-radius:999px;padding:6px 10px;background:#edf7eb;color:var(--green-dark);font-weight:800;font-size:.82rem;margin-left:8px}.grid{display:grid;gap:14px}.metrics{grid-template-columns:repeat(4,minmax(0,1fr))}.metric{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fbfefb}.metric b{display:block;font-size:1.7rem}.metric span{font-size:.9rem;color:var(--muted)}.section-head{display:flex;justify-content:space-between;gap:14px;align-items:flex-start;margin-bottom:14px}.section-head h2{margin:2px 0 0}.progress{height:12px;background:#e9f0e7;border-radius:999px;overflow:hidden;margin:15px 0}.progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,#48ad5b,#228f38);transition:width .25s}.latest{margin-bottom:20px}.activity{display:grid;grid-template-columns:1fr auto;gap:12px;padding:11px 0;border-bottom:1px solid var(--line)}.activity:last-child{border-bottom:0}.activity strong{display:block}.activity small{color:var(--muted)}.activity-progress{font-weight:800;color:var(--green-dark)}.footer-note{text-align:center;color:var(--muted);font-size:.85rem;margin-top:24px}.tabs{display:flex;gap:8px;flex-wrap:wrap;padding:12px}.tab{margin:0;background:#f2f5f1;color:var(--text);border:1px solid var(--line)}.tab.active{background:var(--green);color:#fff}.search-row,.upload-row{display:flex;gap:10px;align-items:center;margin-bottom:14px}.search-row input,.upload-row input{flex:1}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:14px}table{width:100%;border-collapse:collapse;min-width:900px}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);vertical-align:middle}th{background:#f4faf3;font-size:.84rem;color:var(--muted);position:sticky;top:0}tbody tr.clickable{cursor:pointer}tbody tr.clickable:hover{background:#f5fbf4}.status-good{color:var(--green-dark);font-weight:800}.status-open{color:var(--warn);font-weight:800}.form-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;align-items:center}.check{display:flex;align-items:center;gap:8px;padding:8px}.check input{width:auto}.admin-list{margin-top:16px;display:grid;gap:8px}.admin-row{display:grid;grid-template-columns:1.2fr 1fr 1.4fr auto;gap:10px;align-items:center;border:1px solid var(--line);border-radius:12px;padding:10px}.admin-row small{color:var(--muted)}hr{border:0;border-top:1px solid var(--line);margin:22px 0}.filters{display:flex;gap:6px;flex-wrap:wrap}.filter{background:#f2f5f1;color:var(--text);border:1px solid var(--line);padding:7px 10px}.filter.active{background:var(--green);color:#fff}.exercise-list{display:grid;gap:8px}.exercise{display:grid;grid-template-columns:1.4fr .8fr .6fr .8fr .8fr;gap:10px;align-items:center;padding:11px 12px;border:1px solid var(--line);border-radius:12px}.exercise.done{background:#f3fbf2}.exercise.open{background:#fffaf2}.exercise-title strong,.exercise-title small{display:block}.exercise-title small{color:var(--muted)}.modal{position:fixed;inset:0;background:rgba(9,27,12,.45);display:flex;align-items:flex-start;justify-content:center;padding:4vh 18px;z-index:100}.modal-card{background:#fff;width:min(1080px,100%);max-height:92vh;overflow:auto;border-radius:20px;padding:22px;box-shadow:0 24px 70px rgba(0,0,0,.24)}.modal-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.modal-head h2{margin:3px 0}.detail-block{margin-top:18px}.pill{display:inline-block;border-radius:999px;padding:4px 8px;font-size:.78rem;font-weight:800}.pill.good{background:#e8f7e7;color:var(--green-dark)}.pill.open{background:#fff0dc;color:#8e5310}
@media(max-width:900px){.form-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.metrics{grid-template-columns:repeat(2,minmax(0,1fr))}.admin-row{grid-template-columns:1fr 1fr}.exercise{grid-template-columns:1fr 1fr}.exercise-title{grid-column:1/-1}}
@media(max-width:600px){.shell{width:min(100% - 18px,1180px);padding-top:16px}.card{padding:16px;border-radius:16px}.hero{align-items:flex-start}.logo{width:58px;height:58px}.toolbar,.section-head,.search-row,.upload-row{align-items:stretch;flex-direction:column}.form-grid{grid-template-columns:1fr}.metrics{grid-template-columns:1fr 1fr}.admin-row{grid-template-columns:1fr}.modal{padding:10px}.modal-card{padding:16px}.exercise{grid-template-columns:1fr}.exercise-title{grid-column:auto}}