/* Study Center / Reading Room Management System
   Copyright (c) 2026 REOSIT PVT LTD. All rights reserved.
   Support: WhatsApp 9471308002 */
/* Study Center console — design tokens
   Palette: petrol ink + reading-room green + ledger amber.
   Numbers are always set in IBM Plex Mono: seats, money, receipts and clock times
   read as a ledger, which is what this software actually is. */
@font-face{font-family:"Plex Sans";src:url("../vendor/fonts/ibm-plex-sans-latin-400-normal.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Sans";src:url("../vendor/fonts/ibm-plex-sans-latin-500-normal.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Plex Sans";src:url("../vendor/fonts/ibm-plex-sans-latin-600-normal.woff2") format("woff2");font-weight:600;font-display:swap}
@font-face{font-family:"Plex Sans";src:url("../vendor/fonts/ibm-plex-sans-latin-700-normal.woff2") format("woff2");font-weight:700;font-display:swap}
@font-face{font-family:"Plex Mono";src:url("../vendor/fonts/ibm-plex-mono-latin-400-normal.woff2") format("woff2");font-weight:400;font-display:swap}
@font-face{font-family:"Plex Mono";src:url("../vendor/fonts/ibm-plex-mono-latin-500-normal.woff2") format("woff2");font-weight:500;font-display:swap}
@font-face{font-family:"Plex Mono";src:url("../vendor/fonts/ibm-plex-mono-latin-600-normal.woff2") format("woff2");font-weight:600;font-display:swap}

:root{
  --ink:#14232B; --ink-2:#1D323C; --ink-3:#2A4652;
  --canvas:#EDF1EF; --surface:#FFFFFF; --line:#D8E0DD; --line-strong:#BCC9C4;
  --text:#16242B; --muted:#5C6B6F;
  --brand:#0F6E62; --brand-dark:#0A544A; --brand-wash:#E4F0ED;
  --amber:#B26B00; --amber-wash:#FBF0DC;
  --rose:#B3261E; --rose-wash:#FBE7E5;
  --slate:#35617F; --slate-wash:#E5EEF4;
  --radius:10px; --radius-sm:6px;
  --shadow:0 1px 2px rgba(20,35,43,.06), 0 6px 18px rgba(20,35,43,.05);
  --sidebar-w:236px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--canvas);color:var(--text);
  font-family:"Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;font-size:14px;line-height:1.5}
.num,.mono,td.num,th.num{font-family:"Plex Mono",ui-monospace,monospace;font-variant-numeric:tabular-nums}
a{color:var(--brand-dark);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}

/* ---------- shell ---------- */
.shell{display:flex;min-height:100vh}
.sidebar{width:var(--sidebar-w);flex:0 0 var(--sidebar-w);background:var(--ink);color:#C9D6D3;
  position:sticky;top:0;height:100vh;overflow-y:auto;display:flex;flex-direction:column}
.brand{padding:18px 18px 14px;border-bottom:1px solid rgba(255,255,255,.08)}
.brand__name{color:#fff;font-weight:600;font-size:15px;line-height:1.2;display:block}
.brand__sub{font-size:11px;color:#7E938F;letter-spacing:.08em;text-transform:uppercase}
.nav{padding:10px 8px;flex:1}
.nav__group{font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:#66807B;
  padding:14px 12px 6px}
.nav a{display:flex;align-items:center;gap:9px;padding:7px 12px;border-radius:var(--radius-sm);
  color:#C9D6D3;font-size:13.5px}
.nav a:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none}
.nav a.is-active{background:var(--brand);color:#fff}
.nav a i{font-size:15px;width:17px;text-align:center;opacity:.9}
.nav .count{margin-left:auto;background:rgba(255,255,255,.14);border-radius:20px;padding:0 7px;
  font-size:11px;font-family:"Plex Mono",monospace}
.nav .count--alert{background:var(--rose);color:#fff}
.sidebar__foot{padding:12px 16px;border-top:1px solid rgba(255,255,255,.08);font-size:11.5px;color:#7E938F}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{background:var(--surface);border-bottom:1px solid var(--line);padding:10px 22px;
  display:flex;align-items:center;gap:16px;position:sticky;top:0;z-index:20}
.topbar form{flex:1;max-width:460px}
.topbar .search{position:relative}
.topbar .search input{padding-left:34px;background:var(--canvas);border-color:transparent}
.topbar .search i{position:absolute;left:12px;top:9px;color:var(--muted)}
.userchip{display:flex;align-items:center;gap:9px}
.avatar{width:32px;height:32px;border-radius:50%;background:var(--brand-wash);color:var(--brand-dark);
  display:grid;place-items:center;font-weight:600;font-size:12px;font-family:"Plex Mono",monospace}
.content{padding:22px;max-width:1560px;width:100%}

/* ---------- page furniture ---------- */
.page-head{display:flex;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:18px}
.page-head h1{font-size:21px}
.page-head .lede{color:var(--muted);font-size:13px;margin-top:3px}
.page-head .actions{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow)}
.card__head{padding:13px 16px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:10px}
.card__head h2{font-size:14px;letter-spacing:.01em}
.card__head .right{margin-left:auto;font-size:12.5px}
.card__body{padding:16px}
.card__foot{padding:10px 16px;border-top:1px solid var(--line);background:#FAFCFB;font-size:12.5px}

/* ---------- stat tiles ---------- */
.tiles{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(178px,1fr))}
.tile{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:13px 15px;
  box-shadow:var(--shadow);display:block}
.tile:hover{text-decoration:none;border-color:var(--line-strong)}
.tile__label{font-size:11px;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.tile__value{font-family:"Plex Mono",monospace;font-size:25px;font-weight:600;line-height:1.15;
  margin-top:5px;color:var(--text)}
.tile__meta{font-size:12px;color:var(--muted);margin-top:2px}
.tile--brand{border-left:3px solid var(--brand)}
.tile--amber{border-left:3px solid var(--amber)}
.tile--rose{border-left:3px solid var(--rose)}
.tile--slate{border-left:3px solid var(--slate)}

/* ---------- pills ---------- */
.pill{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11.5px;font-weight:500;
  white-space:nowrap;border:1px solid transparent}
.pill--ok{background:var(--brand-wash);color:var(--brand-dark);border-color:#BFDDD7}
.pill--warn{background:var(--amber-wash);color:#84500A;border-color:#EDD9AF}
.pill--bad{background:var(--rose-wash);color:#8C1D18;border-color:#F0C7C3}
.pill--info{background:var(--slate-wash);color:#264A61;border-color:#C6DBE7}
.pill--muted{background:#EEF1F0;color:var(--muted);border-color:var(--line)}

/* ---------- tables ---------- */
.table{width:100%;border-collapse:collapse;font-size:13.5px}
.table th{text-align:left;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--muted);font-weight:600;padding:9px 12px;border-bottom:1px solid var(--line);
  background:#FAFCFB;position:sticky;top:0}
.table td{padding:9px 12px;border-bottom:1px solid var(--line);vertical-align:middle}
.table tbody tr:hover{background:#F7FAF9}
.table .right{text-align:right}
.table-wrap{overflow-x:auto}
.strong{font-weight:600}
.muted{color:var(--muted)}
.small{font-size:12px}
.empty{padding:38px 20px;text-align:center;color:var(--muted)}
.empty i{font-size:26px;display:block;margin-bottom:8px;color:var(--line-strong)}

/* ---------- forms ---------- */
.form-label{font-size:12px;font-weight:600;color:var(--text);margin-bottom:4px}
.form-control,.form-select{border:1px solid var(--line-strong);border-radius:var(--radius-sm);
  font-size:13.5px;padding:7px 10px}
.form-control:focus,.form-select:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(15,110,98,.12)}
.form-text{font-size:11.5px;color:var(--muted)}
.btn{border-radius:var(--radius-sm);font-size:13.5px;font-weight:500;padding:7px 13px;border:1px solid transparent}
.btn-primary{background:var(--brand);border-color:var(--brand)}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark)}
.btn-outline-secondary{border-color:var(--line-strong);color:var(--text);background:var(--surface)}
.btn-outline-secondary:hover{background:var(--canvas);color:var(--text)}
.btn-danger{background:var(--rose);border-color:var(--rose)}
.btn-sm{padding:4px 9px;font-size:12.5px}
.filters{display:flex;gap:8px;flex-wrap:wrap;align-items:flex-end}
.filters .form-control,.filters .form-select{min-width:130px}

/* ---------- seat map (signature) ---------- */
.floor{margin-bottom:22px}
.floor__head{display:flex;align-items:baseline;gap:10px;margin-bottom:10px}
.floor__head h3{font-size:14px}
.seat-row{display:flex;gap:9px;margin-bottom:9px;flex-wrap:wrap}
.seat{width:74px;border:1px solid var(--line-strong);border-radius:8px;background:var(--surface);
  padding:7px 6px 5px;cursor:pointer;text-align:left;position:relative;transition:transform .08s ease}
.seat:hover{transform:translateY(-1px);border-color:var(--brand)}
.seat__no{font-family:"Plex Mono",monospace;font-weight:600;font-size:13px;letter-spacing:-.02em}
.seat__who{font-size:10.5px;color:var(--muted);white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis;height:14px}
/* the 24-hour band: which parts of the day this seat is sold */
.seat__band{display:flex;height:5px;border-radius:3px;overflow:hidden;background:#E9EEEC;margin-top:5px;
  position:relative}
.seat__band span{position:absolute;top:0;bottom:0;border-radius:3px}
.seat--free{background:var(--surface)}
.seat--booked{background:var(--brand-wash);border-color:#BFDDD7}
.seat--held{background:#F1F3F2;border-color:var(--line);opacity:.75}
.seat--held .seat__no{color:var(--muted);text-decoration:line-through}
.legend{display:flex;gap:14px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.legend span{display:flex;align-items:center;gap:6px}
.legend i{width:11px;height:11px;border-radius:3px;display:inline-block;border:1px solid var(--line-strong)}

/* ---------- slot timeline ---------- */
.timeline{position:relative;height:34px;background:#F2F5F4;border-radius:6px;border:1px solid var(--line)}
.timeline__bar{position:absolute;top:4px;bottom:4px;border-radius:4px;color:#fff;font-size:11px;
  padding:2px 6px;overflow:hidden;white-space:nowrap}
.timeline__ticks{display:flex;justify-content:space-between;font-size:10px;color:var(--muted);
  font-family:"Plex Mono",monospace;margin-top:3px}

/* ---------- meters ---------- */
.meter{height:7px;background:#E9EEEC;border-radius:20px;overflow:hidden}
.meter span{display:block;height:100%;background:var(--brand);border-radius:20px}
.meter--amber span{background:var(--amber)}
.meter--rose span{background:var(--rose)}

/* ---------- alerts / messages ---------- */
.alert{border-radius:var(--radius-sm);font-size:13.5px;border:1px solid;padding:10px 13px}
.alert-success{background:var(--brand-wash);border-color:#BFDDD7;color:var(--brand-dark)}
.alert-error,.alert-danger{background:var(--rose-wash);border-color:#F0C7C3;color:#8C1D18}
.alert-warning{background:var(--amber-wash);border-color:#EDD9AF;color:#84500A}
.alert-info{background:var(--slate-wash);border-color:#C6DBE7;color:#264A61}
.alert-row{display:flex;gap:11px;padding:11px 16px;border-bottom:1px solid var(--line);align-items:flex-start}
.alert-row__dot{width:8px;height:8px;border-radius:50%;margin-top:6px;flex:0 0 8px}
.dot--critical{background:var(--rose)}
.dot--warning{background:var(--amber)}
.dot--info{background:var(--slate)}

/* ---------- receipt ---------- */
.receipt{max-width:640px;margin:0 auto;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:28px 30px}
.receipt__head{display:flex;justify-content:space-between;gap:20px;border-bottom:2px solid var(--ink);
  padding-bottom:14px;margin-bottom:16px}
.receipt__title{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.receipt table{width:100%;font-size:13.5px}
.receipt td{padding:5px 0}
.receipt__total{border-top:1px solid var(--line);margin-top:14px;padding-top:12px;
  display:flex;justify-content:space-between;font-size:17px;font-weight:600;
  font-family:"Plex Mono",monospace}
.void-stamp{border:2px solid var(--rose);color:var(--rose);font-weight:700;letter-spacing:.2em;
  padding:5px 12px;border-radius:6px;transform:rotate(-4deg);display:inline-block}

/* ---------- misc ---------- */
.grid-2{display:grid;grid-template-columns:1.6fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.stack{display:flex;flex-direction:column;gap:16px}
.kv{display:grid;grid-template-columns:132px 1fr;gap:6px 12px;font-size:13.5px}
.kv dt{color:var(--muted);font-size:12.5px}
.kv dd{margin:0}
.avatar-lg{width:64px;height:64px;border-radius:12px;object-fit:cover;background:var(--brand-wash);
  display:grid;place-items:center;font-family:"Plex Mono",monospace;font-weight:600;color:var(--brand-dark)}
.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:16px;flex-wrap:wrap}
.tabs a{padding:8px 13px;font-size:13.5px;color:var(--muted);border-bottom:2px solid transparent}
.tabs a.is-active{color:var(--brand-dark);border-bottom-color:var(--brand);font-weight:600}
.searchbox-results{position:absolute;z-index:40;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-sm);box-shadow:var(--shadow);width:100%;max-height:290px;overflow:auto}
.searchbox-results button{display:block;width:100%;text-align:left;border:0;background:none;
  padding:8px 12px;font-size:13px;border-bottom:1px solid var(--line)}
.searchbox-results button:hover{background:var(--brand-wash)}

@media (max-width:1100px){.grid-2,.grid-3{grid-template-columns:1fr}}
@media (max-width:860px){
  .sidebar{position:fixed;left:-260px;transition:left .2s ease;z-index:60}
  .sidebar.is-open{left:0}
  .content{padding:14px}
  .kv{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* --- Ownership credit ---------------------------------------------------- */
.credit{display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:28px 0 4px;padding-top:14px;border-top:1px solid var(--line);
  font-size:12px;color:var(--muted)}
.credit__dot{opacity:.45}
.credit__wa{display:inline-flex;align-items:center;gap:5px;color:var(--brand);
  text-decoration:none;font-weight:500}
.credit__wa:hover{text-decoration:underline}
.credit__wa .bi{font-size:13px}
.receipt__credit{margin-top:14px;padding-top:10px;border-top:1px dashed var(--line);
  font-size:10.5px;color:var(--muted);text-align:center;line-height:1.6}

@media print{
  .sidebar,.topbar,.no-print,.page-head .actions{display:none!important}
  body{background:#fff}
  .content{padding:0;max-width:none}
  .card{border:0;box-shadow:none}
  .table th{background:#fff}
  a{color:#000;text-decoration:none}
  /* The credit line stays on printed receipts and reports. */
  .credit{margin-top:18px;font-size:9.5px;color:#666;justify-content:center}
  .credit__wa{color:#666}
  .receipt__credit{color:#666}
}