:root{
  --blue:#2563eb; --blue-dark:#1d4ed8; --blue-50:#eff4ff;
  --ink:#1f2937; --muted:#6b7280; --line:#e5e7eb; --bg:#f4f6fb; --card:#fff;
  --radius:14px; --shadow:0 8px 28px rgba(20,30,60,.07);
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);color:var(--ink);line-height:1.55}
a{color:inherit;text-decoration:none}
.wrap{max-width:760px;margin:0 auto;padding:20px 16px 56px}

header.top{text-align:center;padding:18px 0 8px}
header.top .school{font-size:.92rem;color:var(--muted)}
header.top h1{font-size:1.45rem;margin:.25rem 0 0;font-weight:600}
header.top .sub{color:var(--muted);font-size:.92rem;margin-top:.25rem}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px 20px;margin:16px 0}
.card h2{font-size:1.05rem;margin:0 0 12px;font-weight:600}

.price p{margin:.32rem 0;font-size:.95rem}
.price strong{color:var(--blue-dark)}
.note{background:var(--blue-50);border:1px solid #dbe6ff;border-radius:10px;
  padding:10px 12px;font-size:.88rem;color:#3a4a63;margin:10px 0}

.divider{display:flex;align-items:center;gap:10px;color:var(--muted);
  font-size:.9rem;margin:22px 2px 12px}
.divider::before,.divider::after{content:"";flex:1;height:1px;background:var(--line)}

.tabs{display:flex;gap:6px;margin:18px 2px 14px;border-bottom:1px solid var(--line)}
.tab{background:none;border:0;border-bottom:2px solid transparent;padding:9px 14px;font-size:1rem;color:var(--muted);cursor:pointer;border-radius:0}
.tab:hover{color:var(--blue-dark)}
.tab.active{color:var(--blue-dark);border-bottom-color:var(--blue);font-weight:600}

.grade{margin:14px 0}
.grade h3{font-size:.9rem;color:var(--muted);font-weight:600;margin:0 0 8px;text-transform:none}
.classes{display:flex;flex-wrap:wrap;gap:8px}
.class-btn{display:inline-flex;align-items:center;justify-content:center;min-width:62px;
  padding:11px 14px;background:#fff;border:1px solid var(--line);border-radius:11px;
  font-weight:600;font-size:1rem;cursor:pointer;transition:.12s}
.class-btn:hover{border-color:var(--blue);color:var(--blue-dark);background:var(--blue-50)}
.class-btn.off{opacity:.5}

.cta{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;
  padding:14px;border-radius:12px;background:var(--blue);color:#fff;border:0;
  font-size:1.02rem;font-weight:600;cursor:pointer;margin:8px 0;transition:.12s}
.cta:hover{background:var(--blue-dark)}
.cta.secondary{background:#fff;color:var(--blue-dark);border:1px solid var(--blue)}

.class-head{text-align:center;margin:6px 0 14px}
.class-head .label{font-size:2.1rem;font-weight:700;line-height:1.05}
.class-head .year{color:var(--muted);font-size:.92rem;margin-top:4px}

.past{opacity:.62;margin-top:6px}
.past .row{display:flex;align-items:center;gap:12px;margin:12px 0;flex-wrap:wrap}
.past .ylabel{min-width:108px;font-size:.9rem}
.past .ylabel b{font-weight:600}.past .ylabel span{color:var(--muted)}
.past .links{display:flex;gap:8px;flex-wrap:wrap}
.past a{padding:7px 13px;border:1px solid var(--line);border-radius:10px;
  font-size:.88rem;color:var(--muted);background:#fff}
.past a:hover{border-color:var(--blue);color:var(--blue-dark)}

.pin-form{max-width:300px;margin:8px auto 0;text-align:center}
.pin-form input{width:100%;text-align:center;font-size:1.5rem;letter-spacing:.5rem;
  font-family:"Courier New",monospace;padding:12px;border:1px solid var(--line);
  border-radius:11px;margin-bottom:10px}
.error{color:#b42318;background:#fee4e2;border:1px solid #fecdca;border-radius:10px;
  padding:9px 12px;font-size:.9rem;margin:10px 0;text-align:center}
.back{display:inline-block;margin-top:14px;color:var(--muted);font-size:.9rem}

.contacts{text-align:center;margin-top:14px}
.contacts a{display:inline-block;margin:0 6px;color:var(--blue-dark);font-weight:600}
footer.site{text-align:center;color:var(--muted);font-size:.84rem;margin-top:26px}

/* ---------- admin ---------- */
body.admin .wrap{max-width:none}
.admin-wrap{max-width:1000px;margin:0 auto;padding:16px}
.admin-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:14px}
.admin-bar .brand{font-weight:600}
.admin-bar nav{display:flex;align-items:center;gap:14px;font-size:.92rem}
.admin-bar nav a{color:var(--blue-dark);font-weight:600}
.admin-bar .who{color:var(--muted)}
.admin-bar .exit{color:#b42318}

.years{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:6px 2px 14px;font-size:.92rem}
.years .lbl{color:var(--muted)}
.yr{padding:5px 11px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink)}
.yr.sel{background:var(--blue);color:#fff;border-color:var(--blue)}
.years .hint{color:var(--muted);font-size:.85rem}

.ok-msg{background:#e7f6ec;border:1px solid #bce5c8;color:#1b6b35;border-radius:10px;padding:9px 12px;margin:10px 0}

.grid-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px;align-items:end}
.grid-form label{display:flex;flex-direction:column;gap:5px;font-size:.85rem;color:var(--muted)}
.grid-form input[type=text]{padding:9px 10px;border:1px solid var(--line);border-radius:9px;font-size:.95rem}
.grid-form .chk{flex-direction:row;align-items:center;gap:7px;font-size:.9rem;color:var(--ink)}
.pin-gen{display:flex;gap:6px}.pin-gen input{flex:1}

.mini{padding:6px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;
  font-size:.85rem;cursor:pointer;color:var(--ink)}
.mini:hover{border-color:var(--blue);color:var(--blue-dark)}
.mini.danger{color:#b42318}.mini.danger:hover{border-color:#e1564b}

.tbl-scroll{overflow-x:auto}
.tbl{width:100%;border-collapse:collapse;font-size:.92rem}
.tbl th,.tbl td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap}
.tbl th{color:var(--muted);font-weight:600;font-size:.82rem}
.tbl tfoot td{border-top:2px solid var(--line);border-bottom:0}
.tbl .lab{font-weight:700}
.mono{font-family:"Courier New",monospace}
.badges .b{display:inline-block;min-width:20px;text-align:center;border-radius:6px;padding:2px 6px;font-size:.8rem;margin-right:3px}
.b.on{background:#e7f6ec;color:#1b6b35}.b.off{background:#f1f1f4;color:#9a9aa2}
.pill{border:0;border-radius:20px;padding:4px 12px;font-size:.82rem;cursor:pointer;font-weight:600}
.pill.on{background:#e7f6ec;color:#1b6b35}.pill.off{background:#fdeceb;color:#b42318}
.acts{display:flex;gap:6px;align-items:center;flex-wrap:wrap}

.modal-bg{display:none;position:fixed;inset:0;background:rgba(20,30,60,.4);
  align-items:flex-start;justify-content:center;padding:40px 16px;z-index:50}
.modal{background:#fff;border-radius:14px;padding:20px;max-width:440px;width:100%;box-shadow:var(--shadow)}
.modal h3{margin:0 0 14px}
.modal label{display:flex;flex-direction:column;gap:5px;font-size:.85rem;color:var(--muted);margin-bottom:10px}
.modal input[type=text],.modal input[type=password],.modal textarea{padding:9px 10px;border:1px solid var(--line);border-radius:9px;font-size:.95rem}
.modal .chk{flex-direction:row;align-items:center;gap:7px;color:var(--ink)}
.modal-acts{display:flex;justify-content:flex-end;gap:10px;margin-top:12px}

.nav-badge{display:inline-block;background:#b42318;color:#fff;border-radius:10px;padding:0 7px;font-size:.75rem;font-weight:600;vertical-align:1px}

.fb-form{display:flex;flex-direction:column;gap:12px;max-width:460px}
.fb-form label{display:flex;flex-direction:column;gap:5px;font-size:.85rem;color:var(--muted)}
.fb-form input[type=text],.fb-form textarea{padding:10px 11px;border:1px solid var(--line);border-radius:10px;font-size:.97rem;font-family:inherit}