*{margin:0;padding:0;box-sizing:border-box}:root{--primary:#e31e36;--primary-dark:#c11430;--primary-tint:#fdeaec;--green:#16a34a;--red:#b91c1c;--bg:#f7f7f8;--card:#ffffff;--text:#1f2430;--muted:#64748b;--border:#e2e8f0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.container{max-width:480px;margin:0 auto;padding:16px}.brand-bar{text-align:center;padding:10px 0 16px}.brand-bar img{height:46px}.brand-logo{display:block;margin:4px auto 14px;height:62px}.brand-line{height:4px;border-radius:2px;background:var(--primary);width:56px;margin:0 auto 14px}.card{background:var(--card);border-radius:16px;padding:20px;box-shadow:0 1px 3px rgba(15,23,42,.08);margin-bottom:16px}.title{font-size:22px;font-weight:800;margin-bottom:4px}.subtitle,.title{text-align:center}.subtitle{color:var(--muted);font-size:14px;margin-bottom:16px}.btn{display:block;width:100%;padding:14px;border:none;border-radius:12px;font-size:16px;font-weight:700;cursor:pointer;text-align:center;text-decoration:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:not(:disabled):active{background:var(--primary-dark)}.btn-outline{background:transparent;color:var(--primary);border:2px solid var(--primary)}.btn:disabled{opacity:.5;cursor:not-allowed}.input{width:100%;padding:14px;border:2px solid var(--border);border-radius:12px;font-size:16px;margin-bottom:12px;text-transform:uppercase}.input:focus{outline:none;border-color:var(--primary)}.error{color:var(--red);font-size:14px;text-align:center;margin:8px 0}.grid21{display:grid;grid-template-columns:repeat(7,1fr);grid-gap:8px;gap:8px;margin:16px 0}.day-cell{aspect-ratio:1;border-radius:10px;display:flex;flex-direction:column;align-items:center;justify-content:center;font-size:13px;font-weight:700;border:2px solid var(--border);color:var(--muted);background:#f8fafc}.day-cell .tick{font-size:16px;line-height:1}.day-done{background:#dcfce7;border-color:var(--green);color:var(--green)}.day-today{border-color:var(--primary);color:var(--primary);background:var(--primary-tint);animation:pulse 1.6s infinite}.day-missed{background:#f8fafc;border-color:var(--border);color:#b6bfcc}@keyframes pulse{0%,to{box-shadow:0 0 0 0 rgba(227,30,54,.35)}50%{box-shadow:0 0 0 6px rgba(227,30,54,0)}}.progress-bar{height:10px;background:var(--border);border-radius:5px;overflow:hidden;margin:12px 0}.progress-fill{height:100%;background:var(--primary);transition:width .3s}.stat-line{text-align:center;font-size:15px;margin-bottom:8px}.divider{text-align:center;color:var(--muted);font-size:13px;margin:14px 0}.header-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.logout{background:none;border:none;color:var(--muted);font-size:13px;cursor:pointer;text-decoration:underline}.admin-container{max-width:1200px;margin:0 auto;padding:16px}.table-wrap{overflow-x:auto;background:var(--card);border-radius:12px;box-shadow:0 1px 3px rgba(15,23,42,.08)}table{border-collapse:collapse;width:100%;font-size:13px}td,th{border:1px solid var(--border);padding:6px 8px;text-align:center;white-space:nowrap}th{background:#f8fafc;top:0}td.student-name,th{position:-webkit-sticky;position:sticky}td.student-name{text-align:left;left:0;background:var(--card);font-weight:600}td.cell-done{background:#dcfce7}td.cell-done a{color:var(--green);text-decoration:none;font-weight:700}td.cell-missed{background:#fef2f2;color:#fca5a5}.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:12px}.toolbar .btn{width:auto;padding:8px 16px;font-size:14px}.timeline-item{border-bottom:1px solid var(--border);padding:10px 0}.timeline-item:last-child{border-bottom:none}.timeline-row{display:flex;justify-content:space-between;align-items:center}.badge{font-size:11px;font-weight:700;border-radius:999px;padding:2px 8px;margin-left:8px;vertical-align:middle}.badge-open{background:var(--primary-tint);color:var(--primary)}.badge-locked{background:#f1f5f9;color:var(--muted)}