/* Ceria. Office: sidebar on a PC, scrolling menu on a phone. Parents and teachers: phone app with a bottom tab bar. */
:root{
  --bg:#F3F5FB; --surface:#fff; --surface2:#ECEFF8; --ink:#1C2140; --muted:#5B6284; --line:#DFE3EF;
  --accent:#2F4BC7; --accent-ink:#fff; --accent-soft:#E6EAFB;
  --sun:#8A5A06; --sun-soft:#FFF1D1; --leaf:#1B7F53; --leaf-soft:#DBF3E6; --berry:#C02F4D; --berry-soft:#FCE3E8;
  --r:14px; --font:system-ui,-apple-system,"Segoe UI",Roboto,"Noto Sans","Microsoft YaHei","PingFang SC",sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root{
  --bg:#11142A; --surface:#1A1E37; --surface2:#232846; --ink:#E8EAF7; --muted:#A3A9C8; --line:#2E3458;
  --accent:#8FA3FF; --accent-ink:#11142A; --accent-soft:#262E5A;
  --sun:#F4C35A; --sun-soft:#3A3018; --leaf:#5BCB95; --leaf-soft:#173528; --berry:#FF8197; --berry-soft:#3D1C26;
  color-scheme:dark}}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 var(--font)}
h1,h2,h3{line-height:1.25;margin:0;font-weight:700}
h1{font-size:1.5rem} h2{font-size:1.15rem} h3{font-size:1rem}
p{margin:0}
a{color:var(--accent)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:6px}
.num{font-variant-numeric:tabular-nums}
.muted{color:var(--muted)} .small{font-size:.86rem} .tiny{font-size:.76rem}
.ic{width:20px;height:20px;flex:none}

/* top bar */
.top{position:sticky;top:0;z-index:20;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px;
  padding:8px max(16px,env(safe-area-inset-right)) 8px max(16px,env(safe-area-inset-left));padding-top:max(8px,env(safe-area-inset-top))}
.brand{display:flex;align-items:center;gap:10px;margin-right:auto;min-width:0;text-decoration:none;color:inherit}
.brand .logo{width:34px;height:34px;flex:none}
.brand span{display:flex;flex-direction:column;min-width:0;line-height:1.15}
.brand b{font-size:1.15rem}
.brand small{color:var(--muted);font-size:.78rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.langf select{border:1px solid var(--line);background:var(--surface);border-radius:8px;padding:5px 6px;font-size:.85rem}
.me{position:relative}
.me summary{list-style:none;cursor:pointer;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--surface2)}
.me summary::-webkit-details-marker{display:none}
.me .menu{position:absolute;right:0;top:44px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:10px;min-width:200px;display:flex;flex-direction:column;gap:4px;box-shadow:0 12px 30px -12px rgba(0,0,0,.35);z-index:30}
.me .menu a,.me .menu button{display:block;text-align:left;padding:8px 10px;border-radius:8px;border:0;background:none;color:var(--ink);text-decoration:none;cursor:pointer;width:100%}
.me .menu a:hover,.me .menu button:hover{background:var(--surface2)}
.me .menu b{padding:4px 10px 6px;font-size:.9rem}

/* office shell */
.shell{display:grid;grid-template-columns:220px minmax(0,1fr);min-height:calc(100vh - 56px)}
.side{border-right:1px solid var(--line);background:var(--surface);padding:14px 10px;display:flex;flex-direction:column;gap:2px}
.side a{display:flex;align-items:center;gap:10px;padding:9px 12px;border-radius:10px;color:var(--muted);text-decoration:none;font-weight:500}
.side a.on{background:var(--accent-soft);color:var(--accent);font-weight:650}
.side .badge{margin-left:auto}
.main,.solo,.phone{padding:20px max(16px,env(safe-area-inset-right)) 40px max(16px,env(safe-area-inset-left));min-width:0}
.wrap{max-width:1100px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.solo .wrap{max-width:460px;padding-top:24px}
.phone .wrap{max-width:560px}
.phone{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
@media (max-width:899px){
  .shell{grid-template-columns:1fr}
  .side{flex-direction:row;overflow-x:auto;border-right:0;border-bottom:1px solid var(--line);padding:6px 12px;gap:4px;position:sticky;top:53px;z-index:15}
  .side a{white-space:nowrap;padding:7px 10px;font-size:.9rem}
  .side .ic{display:none}
}
.tabbar{position:fixed;left:0;right:0;bottom:0;z-index:20;display:grid;grid-auto-flow:column;grid-auto-columns:1fr;background:var(--surface);border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.tabbar a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 2px 9px;font-size:.74rem;font-weight:600;color:var(--muted);text-decoration:none}
.tabbar a .ic{width:23px;height:23px}
.tabbar a.on{color:var(--accent)}

/* building blocks */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:12px;min-width:0}
.card.flat{border:0;background:var(--surface2)}
.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.row.between{justify-content:space-between}
.row.end{align-items:flex-end}
.grow{flex:1;min-width:0}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));gap:16px}
.tiles{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr));gap:12px}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:6px;text-decoration:none;color:inherit}
.tile .k{font-size:.74rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:650}
.tile .v{font-size:1.6rem;font-weight:700;font-variant-numeric:tabular-nums}
.tile .s{font-size:.85rem;color:var(--muted)}
.tile.alert{border-color:var(--sun);background:var(--sun-soft)}
.tile.bad{border-color:var(--berry);background:var(--berry-soft)}
.bar{height:8px;border-radius:5px;background:var(--surface2);overflow:hidden}
.bar i{display:block;height:100%;background:var(--leaf)}
.btn{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:8px 14px;font-weight:650;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:6px;text-decoration:none;color:var(--ink);font-size:.92rem;white-space:nowrap;min-height:40px}
.btn:hover{border-color:var(--accent)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.good{background:var(--leaf);border-color:var(--leaf);color:#fff}
.btn.danger{color:var(--berry);border-color:var(--berry)}
.btn.wa{background:#1FA855;border-color:#1FA855;color:#fff}
.btn.sm{padding:4px 10px;font-size:.82rem;border-radius:8px;min-height:32px}
.btn.block{width:100%;padding:12px}
.btn[disabled]{opacity:.5;cursor:not-allowed}
.linkbtn{border:0;background:none;padding:0;color:var(--accent);cursor:pointer;text-decoration:underline}
.pill{display:inline-flex;align-items:center;padding:2px 9px;border-radius:999px;font-size:.75rem;font-weight:700;white-space:nowrap}
.pill.paid,.pill.approved,.pill.yes{background:var(--leaf-soft);color:var(--leaf)}
.pill.pending{background:var(--sun-soft);color:var(--sun)}
.pill.overdue,.pill.rejected,.pill.no{background:var(--berry-soft);color:var(--berry)}
.pill.unpaid,.pill.void{background:var(--surface2);color:var(--muted)}
.pill.info{background:var(--accent-soft);color:var(--accent)}
.badge{min-width:20px;height:20px;border-radius:10px;background:var(--berry);color:#fff;font-size:.7rem;font-weight:700;display:inline-grid;place-items:center;padding:0 6px}
.chip{display:inline-flex;padding:2px 8px;border-radius:6px;font-size:.75rem;font-weight:650;background:var(--surface2);color:var(--muted)}
.chip.warn{background:var(--berry-soft);color:var(--berry)}
.tabs{display:flex;gap:6px;flex-wrap:wrap}
.tabs a{border:1px solid var(--line);background:var(--surface);padding:6px 12px;border-radius:999px;font-weight:650;font-size:.86rem;color:var(--muted);text-decoration:none}
.tabs a.on{background:var(--ink);border-color:var(--ink);color:var(--bg)}
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
table.tbl{border-collapse:collapse;width:100%;font-size:.9rem}
.tbl th{text-align:left;font-size:.74rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:650;padding:9px 12px;border-bottom:1px solid var(--line);background:var(--surface2);white-space:nowrap}
.tbl td{padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.tbl tr:last-child td{border-bottom:0}
.tbl .r{text-align:right}
.tbl a.rowlink{color:inherit;font-weight:650;text-decoration:none}
.list{display:flex;flex-direction:column}
.li{display:flex;align-items:center;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);min-width:0}
.li:last-child{border-bottom:0}
a.li{color:inherit;text-decoration:none}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field label,.lbl{font-size:.82rem;font-weight:650;color:var(--muted)}
.input,select.input,textarea.input{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:9px 11px;width:100%;min-height:42px}
textarea.input{min-height:100px;resize:vertical}
.form{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,220px),1fr));gap:12px}
.check{display:flex;align-items:center;gap:8px;font-size:.92rem}
.check input{width:18px;height:18px;accent-color:var(--accent)}
.empty{padding:20px;text-align:center;color:var(--muted);font-size:.92rem}
.banner{border-radius:var(--r);padding:12px 14px;font-size:.92rem;display:flex;gap:10px;align-items:flex-start}
.banner.warn{background:var(--berry-soft);color:var(--berry)}
.banner.sun{background:var(--sun-soft);color:var(--sun)}
.banner.ok{background:var(--leaf-soft);color:var(--leaf)}
.banner.info{background:var(--accent-soft);color:var(--accent)}
.banner .grow p{color:var(--ink);opacity:.85}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:.92rem;margin:0}
.kv dt{color:var(--muted)} .kv dd{margin:0;font-weight:650;overflow-wrap:anywhere}
.slipimg{width:100%;max-height:70vh;object-fit:contain;border-radius:10px;border:1px solid var(--line);background:#fff}
.av{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-weight:700;font-size:.82rem;flex:none;color:#fff;background:var(--accent)}
.pagehead{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;justify-content:space-between}
.pagehead p{color:var(--muted)}
.copybox{display:flex;gap:8px}
.copybox input{flex:1;min-width:0}

/* attendance marker */
.mk{display:inline-flex;gap:4px;flex:none}
.mk label{position:relative}
.mk input{position:absolute;opacity:0;inset:0}
.mk span{display:grid;place-items:center;width:40px;height:38px;border-radius:9px;border:1px solid var(--line);background:var(--surface);font-weight:700;color:var(--muted);cursor:pointer}
.mk input:focus-visible+span{outline:3px solid var(--accent)}
.mk input[value=P]:checked+span{background:var(--leaf);border-color:var(--leaf);color:#fff}
.mk input[value=L]:checked+span{background:var(--sun);border-color:var(--sun);color:var(--surface)}
.mk input[value=A]:checked+span{background:var(--berry);border-color:var(--berry);color:#fff}

/* receipt (prints on A4 or A5) */
.receipt{background:#fff;color:#111;border:1px solid var(--line);border-radius:12px;padding:24px;display:flex;flex-direction:column;gap:12px;max-width:640px}
.receipt table{width:100%;border-collapse:collapse}
.receipt td{padding:6px 0;border-bottom:1px solid #e5e7eb}
.receipt .r{text-align:right}
@media print{
  .top,.side,.tabbar,.noprint,.banner{display:none!important}
  body{background:#fff}
  .shell{display:block}
  .main,.phone,.solo{padding:0}
  .receipt{border:0;max-width:none}
}