:root{
  --bg:#eef1f6; --panel:#ffffff; --ink:#1f2733; --muted:#6b7686;
  --line:#d8dee9; --accent:#2d6cdf; --accent2:#1f4fae;
  --ok:#1f9d55; --warn:#d97706; --bad:#dc2626; --recess:#fff4d6;
  --shadow:0 1px 3px rgba(20,30,50,.12),0 6px 18px rgba(20,30,50,.06);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:"Segoe UI",system-ui,Roboto,Arial,"Noto Sans Devanagari",sans-serif;
  background:radial-gradient(1000px 500px at 100% -10%,#e7edf8 0%,rgba(231,237,248,0) 55%),
    radial-gradient(900px 500px at -10% 0%,#eaf0fa 0%,rgba(234,240,250,0) 50%),var(--bg);
  background-attachment:fixed;color:var(--ink);font-size:14px}
h1{font-size:18px;margin:0;line-height:1.1}
.hidden{display:none !important}

/* top bar — professional banner with Marathi header */
.topbar{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 26px 20px;color:#fff;overflow:hidden;
  background:radial-gradient(1100px 240px at 8% -60%,#3f6fe0 0%,rgba(63,111,224,0) 60%),
    linear-gradient(118deg,#0e2c6b 0%,#173e8c 46%,#234fa8 100%);
  box-shadow:0 8px 24px rgba(14,44,107,.28)}
.topbar::before{content:'';position:absolute;inset:0;
  background:repeating-linear-gradient(135deg,rgba(255,255,255,.04) 0 2px,transparent 2px 9px);pointer-events:none}
.topbar::after{content:'';position:absolute;left:0;right:0;bottom:0;height:4px;
  background:linear-gradient(90deg,#9c7b16,#f0d77a 22%,#c9a227 50%,#f0d77a 78%,#9c7b16)}
.brand{display:flex;align-items:center;gap:16px;min-width:0;z-index:1}
.crest{flex:0 0 auto;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;
  background:conic-gradient(from 215deg,#f3dd86,#c9a227,#9c7b16,#f3dd86);
  box-shadow:0 3px 10px rgba(0,0,0,.32),inset 0 0 0 3px rgba(255,255,255,.4)}
.crest-glyph{font-size:26px;filter:drop-shadow(0 1px 1px rgba(0,0,0,.3))}
.brand-txt{min-width:0}
.topbar h1{font-size:23px;font-weight:800;letter-spacing:.2px;line-height:1.18;color:#fff;
  text-shadow:0 1px 3px rgba(0,0,0,.3)}
.topbar .sub{color:#e3ecff;font-size:13.5px;margin-top:4px;font-weight:600}
.topbar .sub2{color:#bfd2ff;font-size:12.5px;margin-top:1px;font-weight:600}
.status-wrap{display:flex;align-items:center;gap:10px;z-index:1;flex-shrink:0}
.savestat{font-size:12px;font-weight:600;color:#cfe0ff}
.savestat.ok{color:#bff0d8}
.savestat.off{color:#ffd2d2}
.badge{padding:7px 14px;border-radius:999px;font-weight:800;font-size:12px;border:1px solid transparent;
  backdrop-filter:blur(4px);box-shadow:0 2px 6px rgba(0,0,0,.18)}
.badge.ok{background:rgba(214,247,228,.95);color:#0a6b46;border-color:#9bdcc0}
.badge.bad{background:rgba(253,226,226,.95);color:#b3261e;border-color:#f0a9a9}

/* tabs — sticky glassy pill nav */
.tabs{display:flex;gap:6px;align-items:center;padding:0 16px;height:52px;
  background:rgba(255,255,255,.88);backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid #dde5f1;box-shadow:0 3px 10px rgba(20,30,50,.06);
  position:sticky;top:0;z-index:25}
.tab{border:1px solid transparent;background:transparent;color:#5a6b86;
  padding:8px 15px;border-radius:10px;cursor:pointer;font-weight:700;font-size:13.5px;
  transition:background .15s,color .15s,box-shadow .15s;position:relative}
.tab:hover{background:#eef3fb;color:#1f2733}
.tab.active{background:#fff;color:#173e8c;box-shadow:0 1px 4px rgba(20,30,50,.14);border-color:#dbe6f7}
.tab.active::after{content:'';position:absolute;left:14px;right:14px;bottom:-1px;height:3px;border-radius:3px 3px 0 0;
  background:linear-gradient(90deg,#1f4fae,#3f6fe0)}

/* toolbar */
.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:10px 16px;
  background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:52px;z-index:20}
.btn{border:1px solid var(--line);background:#fff;color:var(--ink);padding:8px 12px;border-radius:8px;
  cursor:pointer;font-weight:600;font-size:13px;display:inline-flex;align-items:center;gap:6px}
.btn:hover{border-color:#b9c4d6;background:#f7f9fc}
.btn.primary{background:linear-gradient(180deg,#3f6fe0,#1f4fae);border-color:#1c478f;color:#fff;
  box-shadow:0 1px 3px rgba(31,79,174,.35)}
.btn.primary:hover{background:linear-gradient(180deg,#3868d8,#1a458f);border-color:#173e8c}
.btn.warn{color:var(--bad);border-color:#f0c4c4}
.btn.warn:hover{background:#fdf1f1}

/* colour-coded toolbar buttons — vivid but high-contrast */
.toolbar .btn{font-weight:700}
#btnPrint,#btnPrintAll{background:linear-gradient(180deg,#eef2ff,#e3e9fe);border-color:#bfccfb;color:#33419c}
#btnPrint:hover,#btnPrintAll:hover{background:linear-gradient(180deg,#e6ecff,#d6e0fd);border-color:#9fb3f7;box-shadow:0 2px 6px rgba(51,65,156,.18)}
#btnExcel,#btnMaster{background:linear-gradient(180deg,#eafaf0,#daf4e4);border-color:#a8dabd;color:#137a41}
#btnExcel:hover,#btnMaster:hover{background:linear-gradient(180deg,#e0f7e9,#cdeed9);border-color:#7fcaa0;box-shadow:0 2px 6px rgba(19,122,65,.18)}
#btnCsv,#btnTeacherXl{background:linear-gradient(180deg,#e6f8fb,#d4f0f5);border-color:#a2dbe5;color:#0c7888}
#btnCsv:hover,#btnTeacherXl:hover{background:linear-gradient(180deg,#dbf4f8,#c4eaf1);border-color:#79cad8;box-shadow:0 2px 6px rgba(12,120,136,.18)}
#btnBackup{background:linear-gradient(180deg,#fff6e6,#ffeecf);border-color:#f0d399;color:#a76d12}
#btnBackup:hover{background:linear-gradient(180deg,#fff0d8,#ffe6bb);border-color:#e6bf73;box-shadow:0 2px 6px rgba(167,109,18,.2)}
.toolbar label.btn{background:linear-gradient(180deg,#f6edff,#ece0fb);border-color:#d6c0f2;color:#763bb3}
.toolbar label.btn:hover{background:linear-gradient(180deg,#f0e3fe,#e3d2f8);border-color:#c2a3ec;box-shadow:0 2px 6px rgba(118,59,179,.2)}
#btnReset{background:linear-gradient(180deg,#fdeeee,#fbe0e0);border-color:#f1b6b6;color:#c0341d}
#btnReset:hover{background:linear-gradient(180deg,#fce2e2,#f8d2d2);border-color:#e89a9a;box-shadow:0 2px 6px rgba(192,52,29,.2)}
#btnFix{background:linear-gradient(180deg,#fff1e3,#ffe3c9);border-color:#f3c590;color:#b35e16}
#btnFix:hover{background:linear-gradient(180deg,#ffe9d2,#ffd9b3);border-color:#eaad6a}
/* rule bar “Apply” */
#rbApply{background:linear-gradient(180deg,#eafaf0,#daf4e4);border-color:#a8dabd;color:#137a41;font-weight:700}
#rbApply:hover{background:linear-gradient(180deg,#e0f7e9,#cdeed9);border-color:#7fcaa0}

/* reusable colour classes for buttons elsewhere (duty, editor, delivery) */
.btn-green{background:linear-gradient(180deg,#eafaf0,#daf4e4);border-color:#a8dabd;color:#137a41;font-weight:700}
.btn-green:hover{background:linear-gradient(180deg,#e0f7e9,#cdeed9);border-color:#7fcaa0;box-shadow:0 2px 6px rgba(19,122,65,.18)}
.btn-ind{background:linear-gradient(180deg,#eef2ff,#e3e9fe);border-color:#bfccfb;color:#33419c;font-weight:700}
.btn-ind:hover{background:linear-gradient(180deg,#e6ecff,#d6e0fd);border-color:#9fb3f7;box-shadow:0 2px 6px rgba(51,65,156,.18)}
.btn-teal{background:linear-gradient(180deg,#e6f8fb,#d4f0f5);border-color:#a2dbe5;color:#0c7888;font-weight:700}
.btn-teal:hover{background:linear-gradient(180deg,#dbf4f8,#c4eaf1);border-color:#79cad8;box-shadow:0 2px 6px rgba(12,120,136,.18)}
.btn-red{background:linear-gradient(180deg,#fdeeee,#fbe0e0);border-color:#f1b6b6;color:#c0341d;font-weight:700}
.btn-red:hover{background:linear-gradient(180deg,#fce2e2,#f8d2d2);border-color:#e89a9a;box-shadow:0 2px 6px rgba(192,52,29,.2)}

.sel{border:1px solid var(--line);border-radius:8px;padding:8px 10px;font-size:13px;background:#fff;min-width:150px}
.divider{width:1px;height:24px;background:var(--line);margin:0 4px}

/* rule bar */
.rulebar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding:8px 16px;
  background:#fbfcfe;border-bottom:1px solid var(--line)}
.rb-lbl{font-weight:700;font-size:13px}
.rb-chip{display:inline-flex;align-items:center;gap:6px;background:#eef3fb;border:1px solid #cdd9ef;
  border-radius:999px;padding:3px 6px 3px 10px;font-size:12px;font-weight:600}
.rb-x{border:none;background:#d7e0f2;border-radius:50%;width:16px;height:16px;cursor:pointer;font-size:10px;line-height:1;color:#395}
.rb-x:hover{background:#c2cfe8}

/* content */
main{padding:18px}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);
  padding:16px;margin:0 auto 18px;max-width:1100px}
.panel.wide{max-width:1500px}
.chart-scroll{overflow:auto;max-width:100%;-webkit-print-color-adjust:exact;print-color-adjust:exact}
.chart-scroll table{-webkit-print-color-adjust:exact;print-color-adjust:exact}
.panel h2{margin:0 0 4px;font-size:16px}
.panel .meta{color:var(--muted);font-size:12px;margin-bottom:12px}

/* timetable grid */
.cell,table.tt td,table.tt th,tr.recess td{-webkit-print-color-adjust:exact;print-color-adjust:exact;color-adjust:exact}
table.tt{border-collapse:collapse;width:100%;table-layout:fixed}
table.tt th,table.tt td{border:1px solid var(--line);padding:4px;text-align:center;vertical-align:middle;height:54px}
table.tt thead th{background:#e9eef7;font-size:13px;color:#1f2733;font-weight:700}
table.tt td.perh{background:#f4f7fc;font-weight:700;font-size:12.5px;width:98px;color:#1f2733}
table.tt td.perh .tm{display:block;color:#56657f;font-weight:500;font-size:10px}
table.tt td.perh .tm.sat{color:#b5651d;font-weight:700}
table.tt tr.recess td{background:var(--recess);color:#9a6a00;font-weight:700;font-size:11px;height:22px;letter-spacing:.5px}
.cell{display:flex;flex-direction:column;gap:1px;justify-content:center;height:100%;border-radius:6px;padding:2px}
.cell .sj{font-weight:700;font-size:13.5px;line-height:1.1;color:#172033}
.cell .tn{font-size:11px;color:#465573;line-height:1.15;font-weight:600}
.cell.sel{outline:3px solid var(--accent);outline-offset:-3px}
.cell.clash{box-shadow:inset 0 0 0 2px var(--bad)}
td.click{cursor:pointer}
td.free{color:var(--muted);font-style:italic;background:repeating-linear-gradient(45deg,#fafbfd,#fafbfd 6px,#f1f3f8 6px,#f1f3f8 12px)}

/* By-Teacher personal timetable — full bordered grid, distinct navy header */
.tt-main table.tt{border:2.5px solid #173e8c;box-shadow:0 3px 14px rgba(23,62,140,.13)}
.tt-main table.tt th,.tt-main table.tt td{border:1.2px solid #98aacb}
.tt-main table.tt thead th{background:linear-gradient(180deg,#2a59b8,#163a86);color:#fff;
  border-color:#10203f;border-bottom:2.5px solid #0e1d3a;text-shadow:0 1px 1px rgba(0,0,0,.25);font-size:13px}
.tt-main table.tt td.perh{background:#eaf1fc;border-right:2.5px solid #173e8c;font-weight:800;color:#13245a}
.tt-main table.tt td.perh .tm{color:#4a5a7a}
.tt-main table.tt tbody tr.recess td{border-top:2px solid #173e8c;border-bottom:2px solid #173e8c}
.tt-main table.tt td.click{transition:box-shadow .12s}
.tt-main table.tt td.click:hover{box-shadow:inset 0 0 0 2px #2a59b8}
/* class clearly visible in each teacher's timetable — bold blue pill */
.tt-main .cell .sj{font-size:13px;color:#2b3a55}
.tt-main .cell .clsname{display:block;font-size:13px;font-weight:800;color:#10306e;margin-top:2px;line-height:1.3;letter-spacing:.2px}

/* teacher view: table + side summary */
.tt-row{display:flex;gap:16px;align-items:flex-start}
.tt-main{flex:1 1 auto;min-width:0;overflow-x:auto;padding:3px}
.tt-side{flex:0 0 200px;border:1px solid var(--line);border-radius:10px;padding:12px;background:#fbfcfe}
.side-title{font-weight:700;font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.6px;margin-bottom:10px}
.side-box{margin-bottom:9px}
.side-item{display:flex;justify-content:space-between;align-items:center;font-weight:700;font-size:14px}
.side-sub{display:flex;align-items:center;gap:7px}
.dot{width:11px;height:11px;border-radius:3px;display:inline-block;border:1px solid #0000001a}
.side-n{font-variant-numeric:tabular-nums;background:#eef3fb;border-radius:6px;padding:1px 8px;min-width:26px;text-align:center}
.side-cls{font-size:11px;color:var(--muted);margin:2px 0 0 18px}
.side-total{margin-top:10px;padding-top:10px;border-top:1px solid var(--line);font-size:13px}
@media (max-width:760px){.tt-row{flex-direction:column}.tt-side{flex:1 1 auto;width:100%}}

/* class header strip */
.cls-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:10px}
.cls-head .big{font-size:22px;font-weight:800}
.cls-head .ct{color:#33415a;font-size:14px;font-weight:600}
.cls-head .ct b{color:#173e8c;font-weight:800}
.pinbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:0 0 10px;padding:8px 10px;background:#f4f8ff;border:1px solid #d4e2fb;border-radius:8px}
.legend{display:flex;gap:6px;flex-wrap:wrap;margin:10px 0 0}
.legend .chip{font-size:11px;padding:3px 8px;border-radius:999px;border:1px solid var(--line)}

/* editor */
.editor-tools{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:12px}
table.alloc{border-collapse:collapse;width:100%;font-size:13px}
table.alloc th,table.alloc td{border:1px solid var(--line);padding:5px 8px;text-align:left}
table.alloc thead th{background:#f1f4fa;position:sticky;top:0}
table.alloc td.num,table.alloc th.num{text-align:center;width:70px}
table.alloc input.pin{width:54px;text-align:center;border:1px solid var(--line);border-radius:6px;padding:4px}
table.alloc input.txt{width:90px;border:1px solid var(--line);border-radius:6px;padding:4px}
.trow.bad td{background:#fdeaea}
.tgrp td{background:#eef3fb;font-weight:700}
.cls-total{font-weight:700}
.cls-total.bad{color:var(--bad)}
.cls-total.ok{color:var(--ok)}
.mini{font-size:11px;color:var(--muted)}
.rowbtn{border:none;background:none;cursor:pointer;font-size:14px;color:var(--muted)}
.rowbtn:hover{color:var(--bad)}

/* help */
.help h3{margin:16px 0 6px}
.help code{background:#eef1f6;padding:1px 5px;border-radius:4px}
.help ul{margin:6px 0 6px 18px}
.help li{margin:3px 0}

/* toast */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#222b3a;color:#fff;
  padding:10px 16px;border-radius:10px;box-shadow:var(--shadow);z-index:50;font-size:13px;max-width:80vw}
.toast.bad{background:#9b1c1c}
.toast.ok{background:#14653a}

/* ============================================================
   TEACHERS BY SUBJECT  (5th / 6th / 7th)  cards
   ============================================================ */
.subj-std{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:800;color:#fff;
  background:linear-gradient(118deg,#0e2c6b,#234fa8);border-radius:10px;padding:9px 16px;margin-bottom:14px;
  box-shadow:0 3px 10px rgba(15,46,110,.2)}
.subj-std .ss-badge{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;
  background:linear-gradient(180deg,#f3dd86,#c9a227);color:#0f2e6e;font-weight:900;font-size:17px;flex:0 0 auto;
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.4)}
.subj-std .ss-sub{font-size:12px;font-weight:600;color:#cfe0ff}
.subj-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:13px}
.subj-page{display:contents}   /* on screen: transparent wrapper, cards flow in the auto-fill grid */
.subj-card{border:1px solid #dbe3ee;border-radius:12px;overflow:hidden;background:#fff;
  box-shadow:0 1px 4px rgba(20,30,50,.07);transition:box-shadow .15s,transform .15s}
.subj-card:hover{box-shadow:0 6px 18px rgba(20,30,50,.13);transform:translateY(-2px)}
.sc-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-weight:800;font-size:16px;padding:9px 13px}
.sc-head .sc-tot{font-size:10.5px;font-weight:700;opacity:.85;white-space:nowrap}
.sc-body{padding:9px 13px;display:flex;flex-direction:column;gap:8px}
.sc-t{display:flex;flex-direction:column;gap:2px;font-size:12.5px;border-bottom:1px dashed #e6ebf3;padding-bottom:7px}
.sc-t:last-child{border-bottom:none;padding-bottom:0}
.sc-name{font-weight:800}
.sc-cls{display:flex;flex-wrap:wrap;gap:6px;margin-top:1px}
.sc-cp{font-size:12.5px;font-weight:800;color:#13233f;background:#e7eefb;border:1.4px solid #aac1ea;border-radius:7px;padding:2px 9px;letter-spacing:.2px;line-height:1.4}
.sc-cp i{font-style:normal;color:#0a6b46;font-weight:800;margin-left:1px}
@media (max-width:640px){.subj-grid{grid-template-columns:1fr 1fr}.subj-std{font-size:16px}}
@media (max-width:420px){.subj-grid{grid-template-columns:1fr}}

/* ============================================================
   DAILY DUTY  (substitution) module
   ============================================================ */
.duty-head{text-align:center;border-bottom:3px solid #173e8c;padding-bottom:10px;margin-bottom:14px}
.duty-head .dh1{font-size:21px;font-weight:800;color:#173e8c;line-height:1.2}
.duty-head .dh2{font-size:13px;color:#33415a;margin-top:2px}
.duty-head .dh3{font-size:13px;font-weight:700;color:#0f9d6b;margin-top:6px;letter-spacing:.3px}
.duty-ctrl{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.dlbl{font-weight:700;font-size:13px}
.duty-day{font-weight:800;color:#173e8c;background:#eaf1ff;border:1px solid #cfe0ff;border-radius:8px;padding:6px 12px}
.duty-tools{display:flex;gap:8px;margin-left:auto;flex-wrap:wrap}
.duty-sec{font-weight:800;font-size:14px;color:#1f2733;margin:16px 0 8px;padding-bottom:5px;border-bottom:2px solid #e3e9f3}
.duty-stat{background:#f4f8ff;border:1px solid #d4e2fb;border-radius:8px;padding:8px 12px;font-size:13px;margin:6px 0}
.duty-note{color:#6b7686;font-size:13px;background:#fbfcfe;border:1px dashed #cdd9ea;border-radius:8px;padding:12px 14px}
.duty-chips{display:flex;flex-wrap:wrap;gap:7px}
.tchip{border:1px solid #cdd9ea;background:#fff;color:#33415a;border-radius:999px;padding:7px 13px;font-size:12.5px;font-weight:600;cursor:pointer;transition:.12s}
.tchip:hover{border-color:#9fb3d6;background:#f5f8ff}
.tchip.on{background:#fdeaea;border-color:#f0a9a9;color:#b3261e;box-shadow:inset 0 0 0 1px #f0a9a9}
.tchip.on::before{content:'🚩 '}
table.duty-tbl{border-collapse:collapse;width:100%;font-size:13px;min-width:640px}
table.duty-tbl th{background:#173e8c;color:#fff;border:1px solid #2b4f9e;padding:7px 6px;font-size:11.5px;line-height:1.2}
table.duty-tbl td{border:1.3px solid #8593ad;padding:5px 7px;vertical-align:middle}
table.duty-tbl td.abs-cell{font-weight:700;color:#16233a}
table.duty-tbl tr.dclash td{background:#fdeaea}
table.duty-tbl select{border:1px solid #c4cfe0;border-radius:6px;padding:5px 6px;font-size:12.5px;width:100%;background:#fff}
table.duty-tbl select.dsub{font-weight:700;color:#0a6b46}
table.duty-tbl select.dsub.none{color:#c0341d}
.duty-legend{display:flex;flex-wrap:wrap;gap:7px;margin:8px 0 2px}
.alg{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;border:1.5px solid;border-radius:999px;padding:3px 11px 3px 4px}
.alg b{display:inline-grid;place-items:center;min-width:18px;height:18px;border-radius:50%;color:#fff;font-size:11px}
.abadge{display:inline-grid;place-items:center;min-width:18px;height:18px;border-radius:50%;color:#fff;font-size:11px;font-weight:800;margin-right:6px;vertical-align:middle}
.duty-print-row{margin-top:18px;display:flex;justify-content:center}
.duty-print-row .btn{padding:12px 22px;font-size:14px}
.duty-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.duty-card{border:1px solid #d8e0ee;border-radius:12px;padding:12px;background:#fbfcff;box-shadow:0 1px 3px rgba(20,30,50,.06)}
.dc-name{font-weight:800;font-size:14px;margin-bottom:8px;display:flex;justify-content:space-between;align-items:center;gap:8px}
.dc-count{font-size:11px;font-weight:800;color:#fff;background:#1f4fae;border-radius:999px;padding:2px 9px;white-space:nowrap}
.dsub-cell{white-space:nowrap}
.subcount{display:inline-grid;place-items:center;min-width:20px;height:20px;border-radius:50%;background:#0a6b46;color:#fff;font-size:11px;font-weight:800;margin-left:6px;vertical-align:middle}
.dc-list{display:flex;flex-wrap:wrap;gap:5px;margin-bottom:10px;min-height:24px}
.dc-p{font-size:11.5px;font-weight:700;border:1px solid #00000014;border-radius:6px;padding:3px 7px;color:#1f2733}
.dc-btns{display:flex;gap:6px;flex-wrap:wrap}
.dc-btns .btn{padding:7px 9px;font-size:12px}
.dc-wa{color:#0a6b46;border-color:#9bdcc0}
.dc-wa:hover{background:#eafaf2}
/* modal */
.modal-ov{position:fixed;inset:0;background:rgba(15,23,42,.55);z-index:60;display:flex;align-items:center;justify-content:center;padding:18px}
.modal-box{background:#fff;border-radius:14px;max-width:90vw;max-height:88vh;overflow:auto;box-shadow:0 12px 40px rgba(0,0,0,.3)}
.modal-head{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:12px 16px;border-bottom:1px solid var(--line);font-weight:800;position:sticky;top:0;background:#fff}
.modal-x{border:none;background:#eef1f6;border-radius:8px;width:30px;height:30px;cursor:pointer;font-size:14px}
.modal-x:hover{background:#e0e5ee}
.qr-wrap{padding:16px}
@media (max-width:640px){
  .duty-tools{margin-left:0;width:100%}
  .duty-head .dh1{font-size:17px}
  .duty-cards{grid-template-columns:1fr}
}

/* ============================================================
   RESPONSIVE  —  smartphone + tablet + large desktop
   (presentation only; scheduling logic untouched)
   ============================================================ */
html{-webkit-text-size-adjust:100%}
.btn,.tab,.rowbtn,td.click{-webkit-tap-highlight-color:transparent;touch-action:manipulation}

/* let wide tables scroll horizontally inside their panel instead of squashing */
.tt-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* large desktop: use more of the screen */
@media (min-width:1600px){
  .panel{max-width:1280px}
  .panel.wide{max-width:1760px}
  body{font-size:14.5px}
}

/* ---- tablet / small laptop ---- */
@media (max-width:1024px){
  .panel{max-width:100%}
  main{padding:14px}
}

/* ---- below 860px: drop sticky stacking (it overlaps when rows wrap) ---- */
@media (max-width:860px){
  .topbar{position:static;padding:10px 14px;gap:10px;flex-wrap:wrap}
  .tabs{position:static;top:auto}
  .toolbar{position:static;top:auto}
  .rulebar{position:static}
  h1{font-size:16px}
  .sub{font-size:11px}

  /* tabs become a single swipeable strip */
  .tabs{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;padding:8px 10px 0;
    scroll-snap-type:x proximity}
  .tabs::-webkit-scrollbar{display:none}
  .tab{flex:0 0 auto;white-space:nowrap;scroll-snap-align:start}
}

/* ---- phone ---- */
@media (max-width:640px){
  body{font-size:13.5px}
  main{padding:10px}
  .panel{padding:12px;border-radius:10px;margin-bottom:12px}

  .topbar{align-items:flex-start}
  .logo{font-size:22px}
  .status-wrap{width:100%;justify-content:space-between}

  /* tabs: bigger tap targets */
  .tab{padding:10px 14px;font-size:13px;border-radius:9px 9px 0 0}

  /* toolbar: comfortable wrapped buttons + full-width selects */
  .toolbar{gap:7px;padding:10px 12px}
  .btn{padding:10px 12px;font-size:13px;min-height:42px}
  .sel{padding:10px;font-size:14px;min-height:42px;flex:1 1 160px;min-width:0}
  .divider{display:none}

  /* timetable: keep cells readable by scrolling sideways */
  .panel{overflow-x:auto;-webkit-overflow-scrolling:touch}
  table.tt{min-width:680px}
  table.tt th,table.tt td{height:50px;padding:3px}
  table.tt td.perh{width:72px;font-size:11.5px}
  .cell .sj{font-size:13px}
  .cell .tn{font-size:10.5px}
  .cls-head .big{font-size:19px}

  /* editor table scrolls sideways too */
  table.alloc{min-width:560px}

  /* chart: hint that it scrolls */
  .chart-scroll{-webkit-overflow-scrolling:touch}

  /* toast wider on small screens */
  .toast{max-width:92vw;left:50%;bottom:16px}
}

/* very small phones */
@media (max-width:380px){
  .tab{padding:9px 11px;font-size:12px}
  .btn{font-size:12.5px;padding:9px 10px}
  table.tt{min-width:600px}
}

/* Subject-wise chart: print 4 cards (2×2) per page, portrait, never cut */
@page subj{size:A4 portrait;margin:9mm}
@media print{
  .subj-root{page:subj}                         /* portrait, while timetables stay landscape */
  .subj-grid{display:block !important}
  .subj-page{display:grid !important;grid-template-columns:1fr 1fr;gap:6mm;align-content:start;
    break-after:page;page-break-after:always;break-inside:avoid;page-break-inside:avoid}
  .subj-page:last-child{break-after:auto;page-break-after:auto}
  .subj-card{break-inside:avoid;page-break-inside:avoid;box-shadow:none !important;
    -webkit-print-color-adjust:exact;print-color-adjust:exact}
  .subj-std{break-after:avoid;page-break-after:avoid;font-size:14px;padding:6px 12px;margin-bottom:7px;
    -webkit-print-color-adjust:exact;print-color-adjust:exact}
  .cls-head{margin-bottom:6px}
  /* compact cards so a 2×2 always fits one portrait page */
  .subj-card .sc-head{font-size:13px;padding:5px 10px}
  .subj-card .sc-head .sc-tot{font-size:9.5px}
  .subj-card .sc-body{padding:5px 10px;gap:4px}
  .sc-t{padding-bottom:4px;gap:1px}
  .sc-name{font-size:11.5px}
  .sc-cp{font-size:10.5px;padding:1px 6px}
  .sc-head,.sc-cp,.sc-name,.sc-t{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}

/* print */
@media print{
  .no-print{display:none !important}
  body{background:#fff;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  main{padding:0}
  .panel{box-shadow:none;border:none;max-width:none;margin:0;padding:0;page-break-after:always}
  .panel:last-child{page-break-after:auto}
  table.tt td,table.tt th{height:auto;padding:5px}
  table.tt td.perh{width:96px}
  .chart-scroll{overflow:visible}
  .cell .tn{color:#465573;font-size:11px;font-weight:600}
  table.tt thead th{color:#1f2733;font-size:13px}
  @page{size:landscape;margin:10mm}
}