:root{
  --ink:#14181F; --ink-2:#1E2430; --paper:#F6F4EE; --surface:#fff; --line:#E4E0D4;
  --crimson:#B3312C; --crimson-soft:#F5DEDA; --gold:#C68A1E; --gold-soft:#F6E9CD;
  --moss:#2F7A4D; --moss-soft:#DDEEE1; --slate:#5B6372; --slate-soft:#E7E9EE; --sky:#2B6CB0; --sky-soft:#DCE9F7;
  --text:#191B1F; --text-soft:#5B5F6B; --text-faint:#8A8E99; --radius:10px;
  --shadow:0 1px 2px rgba(20,24,31,.06),0 8px 24px rgba(20,24,31,.06);
  --disp:'Oswald',sans-serif; --body:'Inter',system-ui,sans-serif; --mono:'IBM Plex Mono',ui-monospace,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
body{background:var(--paper);color:var(--text);font-family:var(--body);-webkit-font-smoothing:antialiased;min-height:100vh;font-size:14.5px;line-height:1.45}
h1,h2,h3,h4{font-family:var(--disp);font-weight:600;letter-spacing:.01em;margin:0;color:var(--ink)}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit;font-size:14.5px}
a{color:inherit}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.muted{color:var(--text-soft)} .faint{color:var(--text-faint)} .small{font-size:12.5px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.spacer{flex:1}
.hide{display:none!important}

/* auth */
.center-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;
  background:radial-gradient(circle at 15% 10%,rgba(179,49,44,.12),transparent 45%),radial-gradient(circle at 85% 90%,rgba(198,138,30,.12),transparent 45%),var(--ink)}
.auth-card{width:100%;max-width:400px;background:var(--surface);border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.35);padding:34px 30px 26px}
.brand{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.brand img{width:40px;height:40px;border-radius:9px}
.brand-title{font-family:var(--disp);font-size:20px;font-weight:700;color:var(--ink);letter-spacing:.02em}
.brand-sub{font-size:11px;color:var(--text-faint);letter-spacing:.06em;text-transform:uppercase}
.seg{display:flex;background:var(--paper);border-radius:999px;padding:4px;margin-bottom:18px}
.seg button{flex:1;border:0;background:transparent;padding:9px 10px;border-radius:999px;font-size:13px;font-weight:600;color:var(--text-soft)}
.seg button.on{background:var(--ink);color:#fff}
.field{margin-bottom:13px}
.field>label{display:block;font-size:12px;font-weight:600;color:var(--text-soft);margin-bottom:5px}
.field input,.field select,.field textarea{width:100%;padding:10px 12px;border:1.5px solid var(--line);border-radius:8px;background:var(--paper);color:var(--text)}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--ink);background:#fff}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:520px){.grid2{grid-template-columns:1fr}}
.err{background:var(--crimson-soft);color:#7A2620;font-size:13px;padding:9px 11px;border-radius:7px;margin-bottom:12px}
.hint{font-size:12px;color:var(--text-faint);margin-top:14px;text-align:center;line-height:1.5}

/* buttons */
.btn{border-radius:8px;padding:10px 15px;font-size:14px;font-weight:600;border:1.5px solid transparent;display:inline-flex;align-items:center;justify-content:center;gap:6px;white-space:nowrap;text-decoration:none}
.btn-primary{background:var(--ink);color:#fff}.btn-primary:hover{background:#0c0f14}
.btn-block{width:100%}
.btn-ghost{background:transparent;color:var(--text-soft);border-color:var(--line)}.btn-ghost:hover{border-color:var(--ink);color:var(--ink)}
.btn-danger{background:transparent;color:var(--crimson);border-color:var(--crimson-soft)}.btn-danger:hover{background:var(--crimson-soft)}
.btn-gold{background:var(--gold);color:#3a2a06}
.btn-moss{background:var(--moss);color:#fff}
.btn-locked{background:var(--slate-soft);color:var(--text-faint);border-color:var(--line);cursor:not-allowed}
.btn-sm{padding:6px 10px;font-size:12.5px;border-radius:7px}
.btn:disabled{opacity:.55;cursor:not-allowed}
.link{background:none;border:0;padding:0;color:var(--text-soft);text-decoration:underline;font-size:12.5px}
.link:hover{color:var(--ink)}

/* shell */
.topbar{background:var(--ink);color:#fff;padding:0 18px;display:flex;align-items:center;gap:14px;height:58px;position:sticky;top:0;z-index:30}
.topbar .brand{margin:0}.topbar .brand-title{color:#fff;font-size:17px}.topbar .brand-sub{color:rgba(255,255,255,.45)}
.nav{display:flex;gap:2px;margin-left:10px}
.nav a{color:rgba(255,255,255,.7);text-decoration:none;padding:8px 12px;border-radius:7px;font-size:13.5px;font-weight:500}
.nav a.on,.nav a:hover{background:rgba(255,255,255,.1);color:#fff}
.who{font-size:12.5px;color:rgba(255,255,255,.7);text-align:right;line-height:1.3}.who b{color:#fff;font-weight:600}
@media(max-width:700px){.who{display:none}.nav{margin-left:0}.topbar .brand-sub{display:none}}
main{max-width:1060px;margin:0 auto;padding:20px 16px 90px}
.page-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.page-head h1{font-size:26px}

/* cards & stats */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px;margin-bottom:14px}
.card h3{font-size:17px;margin-bottom:10px}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-bottom:16px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}
.stat .n{font-family:var(--disp);font-size:26px;font-weight:600;color:var(--ink);line-height:1.1}
.stat .l{font-size:12px;color:var(--text-soft)}
.stat.warn .n{color:var(--crimson)}.stat.gold .n{color:var(--gold)}
.stat.click{cursor:pointer}.stat.click:hover{border-color:var(--ink)}

/* chips & pills */
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px}
.chip{border:1.5px solid var(--line);background:var(--surface);border-radius:999px;padding:5px 12px;font-size:13px;font-weight:500;color:var(--text-soft)}
.chip.on{background:var(--ink);border-color:var(--ink);color:#fff}
.pill{display:inline-block;border-radius:999px;padding:2px 9px;font-size:11.5px;font-weight:600;white-space:nowrap}
.pill.paid{background:var(--moss-soft);color:var(--moss)}
.pill.paid-locked{background:var(--slate-soft);color:var(--slate)}
.pill.due,.pill.duesoon{background:var(--gold-soft);color:#8a5c05}
.pill.overdue{background:var(--crimson-soft);color:var(--crimson)}
.pill.paused,.pill.left,.pill.waived,.pill.upcoming{background:var(--slate-soft);color:var(--slate)}
.pill.pending{background:var(--sky-soft);color:var(--sky)}
.pill.void{background:var(--crimson-soft);color:var(--crimson)}

/* student list & avatars */
.search{width:100%;padding:11px 14px;border:1.5px solid var(--line);border-radius:9px;background:#fff;margin-bottom:10px}
.srow{display:flex;gap:12px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:11px 13px;margin-bottom:8px;cursor:pointer}
.srow:hover{border-color:var(--ink)}
.avatar{width:46px;height:46px;border-radius:50%;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--disp);font-size:18px;flex:none;object-fit:cover;overflow:hidden}
.avatar.lg{width:84px;height:84px;font-size:32px}
.avatar-wrap{position:relative;display:inline-flex;cursor:pointer;flex:none}
.avatar-wrap .cam-badge{position:absolute;right:-2px;bottom:-2px;background:var(--ink);color:#fff;border:2px solid #fff;border-radius:999px;font-size:10px;padding:2px 6px;font-weight:600;box-shadow:0 2px 6px rgba(0,0,0,.25)}
.avatar-wrap:hover .cam-badge{background:var(--crimson)}
.sinfo{flex:1;min-width:0}
.sname{font-weight:600;color:var(--ink)}
.enr-line{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:3px;font-size:12.5px;color:var(--text-soft)}
.srow .acts{display:flex;gap:6px;flex:none}
@media(max-width:560px){.srow{flex-wrap:wrap}.srow .acts{width:100%;justify-content:flex-end}}

/* enrollment card & ledger */
.enr-head{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:6px}
.enr-head h3{margin:0}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px 16px;margin:10px 0}
.kv div small{display:block;font-size:11.5px;color:var(--text-faint);text-transform:uppercase;letter-spacing:.04em}
.cycles{display:grid;grid-template-columns:repeat(auto-fill,minmax(122px,1fr));gap:6px;margin:10px 0}
.cy{border:1px solid var(--line);border-radius:8px;padding:6px 8px;font-size:12px;background:#fff;cursor:pointer;transition:border-color .15s,opacity .15s}
.cy:hover{border-color:var(--ink)}
.cy b{display:block;font-size:12.5px}
.cy.paid{background:var(--slate-soft);border-color:#d0d4dc;color:var(--text-soft);opacity:.72}
.cy.due{background:var(--gold-soft);border-color:#ecd49a}
.cy.overdue{background:var(--crimson-soft);border-color:#e8b9b4}
.cy.waived,.cy.upcoming{background:var(--slate-soft)}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{text-align:left;font-size:11.5px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-faint);padding:6px 8px;border-bottom:1px solid var(--line)}
td{padding:8px;border-bottom:1px solid var(--line);vertical-align:top}
tr.voided td{color:var(--text-faint);text-decoration:line-through}
tr.voided td:last-child,tr.voided td .nostrike{text-decoration:none}
.tbl-wrap{overflow-x:auto}
.num{text-align:right;font-family:var(--mono);font-variant-numeric:tabular-nums;white-space:nowrap}

/* modal */
#modal-root .back{position:fixed;inset:0;background:rgba(10,12,16,.55);display:flex;align-items:flex-start;justify-content:center;padding:4vh 12px;z-index:100;overflow:auto}
.modal{background:#fff;border-radius:14px;width:100%;max-width:520px;box-shadow:0 20px 60px rgba(0,0,0,.35);padding:20px}
.modal h2{font-size:21px;margin-bottom:12px}
.modal .foot{display:flex;gap:8px;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}
.opts{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:12px}
.opt{border:1.5px solid var(--line);background:#fff;border-radius:9px;padding:9px 4px;text-align:center;font-weight:600}
.opt small{display:block;font-weight:400;color:var(--text-soft);font-size:11.5px}
.opt.on{border-color:var(--ink);background:var(--ink);color:#fff}.opt.on small{color:rgba(255,255,255,.7)}
.quote{background:var(--paper);border-radius:9px;padding:11px 13px;margin-bottom:12px}
.quote .amt{font-family:var(--disp);font-size:28px;color:var(--ink)}
#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:#fff;padding:10px 16px;border-radius:9px;font-size:13.5px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:200;max-width:90vw}
#toast.show{opacity:1}
#toast.bad{background:var(--crimson)}

/* receipt */
.receipt{border:1.5px dashed var(--line);border-radius:10px;padding:16px;background:#fff}
.receipt h2{margin-bottom:2px}
.receipt .big{font-family:var(--disp);font-size:30px}
.receipt.void{opacity:.75}
.receipt .stamp{color:var(--crimson);border:2px solid var(--crimson);display:inline-block;padding:2px 10px;transform:rotate(-6deg);font-family:var(--disp);letter-spacing:.1em;margin-bottom:8px}

/* install bubble */
#install{position:fixed;right:16px;bottom:16px;z-index:60;background:var(--ink);color:#fff;border:0;border-radius:999px;padding:11px 18px;font-weight:600;font-size:13.5px;box-shadow:0 8px 24px rgba(0,0,0,.35);display:none}
#install.show{display:block}

@media print{
  body{background:#fff}
  body.has-modal #app,#install,#toast,.modal .foot,.modal h2{display:none!important}
  #modal-root .back{position:static;background:none;padding:0;display:block}
  .modal{box-shadow:none;max-width:none;padding:0}
  .receipt{border:1px solid #999}
}
/* join page honeypot (bots fill it; people never see it) and a PIN shown once to staff */
.hp{position:absolute!important;left:-9999px!important;width:1px;height:1px;opacity:0}
.pin-show{font-size:34px;letter-spacing:.3em;text-align:center;padding:14px;background:var(--paper);border-radius:10px;margin-bottom:10px}