/* Roji Seating Chart Generator.
   Layout: Roji brand header, the class list and rules on the left, the room on the right (stacked on phones).
   The printed chart is its own page and always prints as dark ink on white paper. */
:root{
  --navy:#1D5B8D; --sky:#0B7CC9; --green:#3CC47C; --green-ink:#1E8A52;
  --bg:#EEF5FB; --surface:#FFFFFF; --ink:#16324A; --muted:#557089; --line:#CFE0EE; --field:#F7FBFE; --tint:#E3EFF9;
  --on-navy:#FFFFFF; --warn-bg:#FFF1CC; --warn-ink:#7A5400; --ok-bg:#DDF5E8; --ok-ink:#15693F;
  --low-bg:#FDE3DC; --low-ink:#8A2A12;
  --desk:#E3EFF9; --desk-edge:#A9C8E2; --floor:#F7FBFE;
  --title-fill:#0B7CC9; --title-stroke:#12344F;
  --shadow:0 1px 0 #d7e6f2, 0 10px 30px -18px rgba(29,91,141,.45);
  --f-display:"Luckiest Guy","Arial Rounded MT Bold","Trebuchet MS",sans-serif;
  --f-body:"Nunito",system-ui,-apple-system,"Segoe UI",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0E1B27; --surface:#15283A; --ink:#E6F0F8; --muted:#9BB3C8; --line:#27425A; --field:#10202F; --tint:#1B3247;
  --navy:#5CADE2; --sky:#5CADE2; --green-ink:#5FD897; --on-navy:#06121C;
  --warn-bg:#3B3013; --warn-ink:#F4CF6E; --ok-bg:#153B2A; --ok-ink:#7FE3AE;
  --low-bg:#45201A; --low-ink:#FFB4A1;
  --desk:#1F3B54; --desk-edge:#3A6283; --floor:#10202F;
  --title-fill:#5CADE2; --title-stroke:#06121C; --shadow:0 12px 30px -20px rgba(0,0,0,.8); color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0E1B27; --surface:#15283A; --ink:#E6F0F8; --muted:#9BB3C8; --line:#27425A; --field:#10202F; --tint:#1B3247;
  --navy:#5CADE2; --sky:#5CADE2; --green-ink:#5FD897; --on-navy:#06121C;
  --warn-bg:#3B3013; --warn-ink:#F4CF6E; --ok-bg:#153B2A; --ok-ink:#7FE3AE;
  --low-bg:#45201A; --low-ink:#FFB4A1;
  --desk:#1F3B54; --desk-edge:#3A6283; --floor:#10202F;
  --title-fill:#5CADE2; --title-stroke:#06121C; --shadow:0 12px 30px -20px rgba(0,0,0,.8); color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.5;-webkit-text-size-adjust:100%}
.wrap{max-width:1180px;margin:0 auto;padding-inline:clamp(16px,3vw,32px);padding-block:12px 40px}
button,input,select,textarea{font-family:inherit}
:focus-visible{outline:3px solid var(--green);outline-offset:2px}
p{margin:0}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

/* ---------- brand header (same on every Roji tool) ---------- */
.brandbar{display:flex;justify-content:space-between;align-items:center;gap:12px;font-weight:800;color:var(--navy);font-size:.9rem}
.brandbar a{color:inherit;text-decoration:none}
.brandbar .kit{letter-spacing:.08em;text-transform:uppercase;font-size:.72rem;color:var(--muted)}
.hero{display:flex;align-items:center;margin-block:4px 10px}
.hero-text{flex:1;min-width:0;padding-bottom:clamp(8px,2vw,20px)}
.eyebrow{font-weight:800;color:var(--green-ink);letter-spacing:.08em;text-transform:uppercase;font-size:.78rem}
h1{font-family:var(--f-display);font-weight:400;font-size:clamp(2.1rem,6vw,3.8rem);line-height:.95;margin:4px 0 10px;
  color:var(--title-fill);-webkit-text-stroke:2px var(--title-stroke);paint-order:stroke fill;letter-spacing:.01em;text-wrap:balance;text-shadow:0 3px 0 var(--title-stroke)}
.tagline{color:var(--muted);font-weight:700;max-width:52ch}
.roji{flex:0 0 auto;width:clamp(110px,20vw,200px);display:block}
.roji img{width:100%;height:auto;display:block;filter:drop-shadow(0 8px 12px rgba(18,52,79,.18))}

.example{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;justify-content:space-between;background:var(--warn-bg);color:var(--warn-ink);
  border-radius:14px;padding:10px 14px;font-weight:700;margin-bottom:16px}
.example .btn.ghost{color:var(--warn-ink);border-color:currentColor}

/* ---------- layout ---------- */
.app{display:grid;grid-template-columns:minmax(0,370px) minmax(0,1fr);gap:20px;align-items:start}
@media (max-width:900px){.app{grid-template-columns:minmax(0,1fr)}}
.panel{background:var(--surface);border-radius:18px;box-shadow:var(--shadow);padding:6px 20px 20px;min-width:0}
.grp{padding-top:14px;display:grid;grid-template-columns:minmax(0,1fr);gap:10px}
.grp+.grp{border-top:2px dashed var(--line);margin-top:16px}
h2{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--green-ink);margin:0;font-weight:800}
label{display:grid;gap:4px;font-size:.85rem;font-weight:800;color:var(--muted)}
.hint{font-weight:600;font-size:.8rem;color:var(--muted)}
.hint:empty,.toast:empty{display:none}
.lbl{font-size:.85rem;font-weight:800;color:var(--muted);margin-bottom:6px}
input,select,textarea{font-size:1rem;font-weight:700;color:var(--ink);background:var(--field);border:2px solid var(--line);border-radius:10px;padding:9px 10px;width:100%;min-width:0;min-height:44px}
textarea{resize:vertical;line-height:1.35}
input:focus,select:focus,textarea:focus{border-color:var(--sky)}
.row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;align-items:end}
.seg{display:flex;flex-wrap:wrap;gap:6px}
.seg button{font-size:.9rem;font-weight:800;border:2px solid var(--line);background:var(--surface);color:var(--ink);border-radius:999px;padding:8px 13px;min-height:44px;min-width:44px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--navy);color:var(--on-navy);border-color:var(--navy)}
.check{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);font-size:.95rem}
.check input{width:22px;height:22px;min-height:0;flex:none;accent-color:var(--green)}

.btn{display:inline-flex;align-items:center;justify-content:center;font-size:.95rem;font-weight:800;border:2px solid var(--navy);background:var(--navy);color:var(--on-navy);
  border-radius:12px;padding:9px 16px;min-height:44px;cursor:pointer;text-decoration:none}
.btn.ghost{background:transparent;color:var(--navy)}
.btn.small{font-size:.88rem;padding:6px 12px;justify-self:start}
.btn:disabled{opacity:.45;cursor:not-allowed}

/* ---------- class list ---------- */
.list-head{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.count{font-weight:800;font-size:.92rem;color:var(--ink)}
.roster{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:minmax(0,1fr);gap:4px}
@media (min-width:901px){.roster{max-height:372px;overflow-y:auto;padding-right:4px}}
.roster li{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;gap:4px;align-items:center;background:var(--field);border-radius:10px;padding:3px 3px 3px 10px}
.roster .nm{font-weight:800;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.roster li.out .nm{color:var(--muted);text-decoration:line-through}
.tog{font-size:.78rem;font-weight:800;border:2px solid var(--line);background:var(--surface);color:var(--muted);border-radius:8px;min-height:40px;padding:4px 9px;cursor:pointer}
.tog[aria-pressed="true"]{background:var(--warn-bg);color:var(--warn-ink);border-color:var(--warn-ink)}
.tog.pick[aria-pressed="true"]{background:var(--ok-bg);color:var(--ok-ink);border-color:var(--ok-ink)}
.rm{border:2px solid var(--line);background:var(--surface);color:var(--muted);border-radius:8px;min-width:40px;min-height:40px;font-size:1.05rem;font-weight:800;cursor:pointer;line-height:1}

/* ---------- keep-apart rules ---------- */
.rules{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:minmax(0,1fr);gap:4px}
.rules:empty{display:none}
.rules li{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px;align-items:center;background:var(--field);border-radius:10px;padding:3px 3px 3px 10px;font-weight:800}
.rules li span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rules li i{font-style:normal;color:var(--muted);font-weight:700}

/* ---------- the room ---------- */
.out{min-width:0;display:grid;grid-template-columns:minmax(0,1fr);gap:14px}
.chart{padding:14px 20px 18px;display:grid;grid-template-columns:minmax(0,1fr);gap:12px}
.chart-head{display:flex;justify-content:space-between;align-items:center;gap:8px 14px;flex-wrap:wrap}
.chart-head .hint{font-size:.9rem;font-weight:700}
.chart-tools{display:flex;flex-wrap:wrap;gap:8px 14px;align-items:center;justify-content:space-between}
.room{display:grid;grid-template-columns:minmax(0,1fr);gap:10px;background:var(--floor);border-radius:14px;padding:10px}
.front{background:var(--navy);color:var(--on-navy);border-radius:8px;text-align:center;font-weight:800;font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;padding:5px 10px}
.scroll{overflow-x:auto;min-width:0;padding:4px}
.desks{display:grid;gap:6px;margin-inline:auto}
.seat{min-width:0;height:100%;border:2px solid var(--desk-edge);border-bottom-width:5px;background:var(--desk);color:var(--ink);border-radius:9px;
  font-size:.84rem;font-weight:800;line-height:1.12;padding:2px 3px;cursor:pointer;display:grid;place-items:center;align-content:center;text-align:center;overflow:hidden}
.desks.flip .seat{border-bottom-width:2px;border-top-width:5px}
.desks.horseshoe .seat{border-width:2px}
.seat span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere;max-width:100%}
.seat small{display:block;font-size:.6rem;letter-spacing:.06em;text-transform:uppercase;font-weight:800}
.seat.empty{background:transparent;border:2px dashed var(--line)}
.seat.absent{background:transparent;border-style:dashed;color:var(--muted)}
.seat.absent span{-webkit-line-clamp:1}
.seat.clash{background:var(--low-bg);border-color:var(--low-ink);color:var(--low-ink)}
.seat[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:var(--on-navy)}
.podlbl{font-size:.68rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--muted);align-self:end;line-height:1.2}
.blank{background:var(--field);border:2px dashed var(--line);border-radius:14px;padding:22px 16px;text-align:center;font-weight:700;color:var(--muted)}

.notes{display:grid;grid-template-columns:minmax(0,1fr);gap:6px}
.notes:empty{display:none}
.note{border-radius:10px;padding:8px 12px;font-weight:700;font-size:.92rem;display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;justify-content:space-between}
.note.bad{background:var(--low-bg);color:var(--low-ink)}
.note.good{background:var(--ok-bg);color:var(--ok-ink)}
.note.info{background:var(--tint);color:var(--ink)}
.note ul{margin:4px 0 0;padding-left:1.2em;flex-basis:100%}
.note .btn{border-color:currentColor;background:transparent;color:inherit}

.tools{display:grid;grid-template-columns:minmax(0,1fr);gap:8px}
.actions{display:flex;flex-wrap:wrap;gap:8px}
.toast{background:var(--ok-bg);color:var(--ok-ink);border-radius:10px;padding:8px 12px;font-weight:700;font-size:.9rem}
.copybox{min-height:130px;font-size:.85rem;font-weight:600}

.how{background:var(--surface);border-radius:14px;padding:12px 16px;box-shadow:var(--shadow)}
.how summary{cursor:pointer;font-weight:800;color:var(--navy)}
.how p{margin-top:8px;max-width:68ch;font-size:.93rem}
.how ul{margin:8px 0 0;padding-left:1.2em;display:grid;gap:4px;font-size:.93rem;max-width:68ch}

footer.site{margin-top:28px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:.85rem;font-weight:700}
footer.site a{color:var(--navy)}
@media (max-width:420px){.panel,.chart{padding-inline:14px}.room{padding:6px}.seat{font-size:.76rem}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* On phones a small bar keeps the chart one tap away while you edit the class list. */
.mini{display:none}
@media (max-width:900px){
  .mini{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:5;justify-content:center;gap:6px 14px;flex-wrap:wrap;align-items:baseline;background:var(--navy);color:var(--on-navy);
    font-weight:800;text-decoration:none;padding:10px 16px calc(10px + env(safe-area-inset-bottom,0px));font-variant-numeric:tabular-nums;box-shadow:0 -6px 18px -10px rgba(0,0,0,.5)}
  .mini b{font-family:var(--f-display);font-weight:400;font-size:1.5rem;line-height:1}
  .mini u{font-size:.85rem;opacity:.9;text-decoration:none}
  .mini span{text-decoration:underline;font-size:.9rem}
  .wrap{padding-block-end:84px}
}
@media print{.mini{display:none!important}}

/* ---------- printed chart (US Letter, sideways). Fixed paper colors: this is what prints. ---------- */
.sheet{display:none}
@page{size:letter landscape;margin:.5in}
@media print{
  body{background:#fff;color:#16324A}
  .wrap{display:none!important}
  .sheet{display:block;font-family:var(--f-body);color:#16324A;font-size:11pt;line-height:1.3}
  .sh-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;border-bottom:2px solid #1D5B8D;padding-bottom:6px}
  .sh-eyebrow{font-size:8.5pt;text-transform:uppercase;letter-spacing:.09em;font-weight:800;color:#4F6A82}
  .sh-title{font-family:var(--f-display);font-weight:400;font-size:20pt;line-height:1;color:#1D5B8D;margin:2px 0 3px}
  .sh-meta{font-weight:700;color:#4F6A82;font-size:10pt}
  .sh-name{font-weight:700;white-space:nowrap;font-size:10pt;display:flex;gap:14px}
  .sh-name i{display:inline-block;width:1.5in;border-bottom:1.5px solid #16324A}
  .sh-front{margin-block:8px;background:#1D5B8D;color:#fff;text-align:center;font-weight:800;font-size:8.5pt;letter-spacing:.12em;text-transform:uppercase;padding:3px;border-radius:4px}
  .sh-desks{display:grid;gap:4px;margin-inline:auto}
  .sh-seat{border:1.5px solid #1D5B8D;border-radius:5px;display:grid;place-items:center;align-content:center;text-align:center;font-weight:800;padding:1px 3px;overflow:hidden;min-width:0;line-height:1.1;background:#fff}
  .sh-seat span{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere;max-width:100%}
  .sh-desks.tight .sh-seat span{-webkit-line-clamp:1}
  .sh-seat small{display:block;font-size:6.5pt;letter-spacing:.06em;text-transform:uppercase}
  .sh-seat.empty{border:1px dashed #9FB6CA}
  .sh-seat.absent{border-style:dashed;color:#4F6A82;background:#EEF5FB}
  .sh-pod{font-size:7.5pt;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:#4F6A82;align-self:end;line-height:1.1}
  .sh-absent{margin-top:6px;font-weight:700;font-size:10pt}
  .sh-foot{margin-top:8px;display:flex;align-items:center;gap:8px;font-weight:800;color:#1D5B8D;font-size:9pt;border-top:1px solid #C5D6E5;padding-top:5px}
  .sh-foot img{width:22pt;height:22pt;border-radius:50%}
  *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}