:root{--bg:#f4f6f8;--card:#fff;--text:#17212b;--muted:#667085;--line:#e4e7ec;--primary:#111827;--accent:#2563eb;--danger:#b42318;--success:#067647}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.top{height:68px;padding:0 max(24px,calc((100% - 1180px)/2));display:flex;align-items:center;justify-content:space-between;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}.top nav{display:flex;gap:22px;align-items:center;color:var(--muted);font-size:14px}.logo{font-weight:900;letter-spacing:.14em}.container{max-width:1180px;margin:34px auto;padding:0 20px}.card,.login-card,.stat{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px rgba(16,24,40,.04)}.card{padding:24px;margin-bottom:22px}.login-body{min-height:100vh;display:grid;place-items:center;background:radial-gradient(circle at top,#e8efff,transparent 45%),var(--bg)}.login-card{width:min(420px,calc(100% - 32px));padding:38px}.brand{width:52px;height:52px;border-radius:15px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:900}.login-card h1{margin:24px 0 6px}label{display:grid;gap:7px;font-size:14px;font-weight:650;margin:14px 0}input,select,textarea{width:100%;border:1px solid #d0d5dd;border-radius:10px;padding:11px 12px;font:inherit;background:#fff;color:inherit}textarea{min-height:88px;resize:vertical}.btn{border:0;border-radius:10px;padding:11px 16px;font-weight:750;cursor:pointer;display:inline-flex;justify-content:center;margin:6px 6px 6px 0}.btn.primary{background:var(--primary);color:#fff}.btn.secondary{background:#eef2f6;color:#344054}.login-card .btn{width:100%;margin-top:12px}.muted,small{color:var(--muted)}.alert{padding:12px 14px;border-radius:10px;background:#eff8ff;margin:12px 0}.alert.danger{background:#fef3f2;color:var(--danger)}.alert.success{background:#ecfdf3;color:var(--success)}.hero{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:30px 0}.hero h1{font-size:38px;margin:0 0 8px}.qr-card{background:#fff;padding:18px;border-radius:18px;border:1px solid var(--line);text-align:center}.qr-image{display:block;width:180px;height:180px}.grid.two{display:grid;grid-template-columns:1fr 1fr;gap:22px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}.section-head,.admin-head{display:flex;justify-content:space-between;align-items:center;gap:16px}.tabs{display:flex;gap:8px;flex-wrap:wrap}.tabs a{padding:9px 13px;border-radius:9px;color:var(--muted)}.tabs a.active{background:#fff;border:1px solid var(--line);color:var(--text)}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:24px 0}.stat{padding:22px}.stat strong{display:block;font-size:32px}.stat span{color:var(--muted)}.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse;font-size:14px}th,td{text-align:left;padding:13px 10px;border-bottom:1px solid var(--line);vertical-align:top}th{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.04em}.badge{display:inline-block;padding:4px 8px;border-radius:999px;background:#eef2f6}.badge.presente{background:#ecfdf3;color:#067647}.badge.falta{background:#fef3f2;color:#b42318}.badge.tardanza{background:#fffaeb;color:#b54708}.history-list article{display:grid;gap:4px;padding:14px 0;border-bottom:1px solid var(--line)}.check{display:flex;align-items:center;gap:8px}.check input{width:auto}.mini-form{min-width:260px}.empty{padding:20px;background:#f8fafc;border-radius:12px;color:var(--muted)}#scannerVideo{width:100%;max-height:380px;background:#000;border-radius:12px;margin-top:16px}hr{border:0;border-top:1px solid var(--line);margin:24px 0}@media(max-width:800px){.grid.two,.stats{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.hero{align-items:flex-start;flex-direction:column}.section-head,.admin-head{align-items:flex-start;flex-direction:column}.top nav span{display:none}.container{margin-top:22px}}