/* ============================================================
   Smart Room Scheduler — UI theme
   "Calm operational clarity": teal primary, warm-neutral surfaces,
   crisp white nav, soft depth. Class names kept stable so markup
   across pages continues to work.
   ============================================================ */
:root{
  /* Surfaces & neutrals */
  --bg:#eef1f4;
  --surface:#ffffff;
  --surface-2:#f7f9fb;
  --line:#e3e8ee;
  --line-2:#eef2f6;

  /* Text */
  --ink:#17212b;
  --ink-2:#2b3846;
  --muted:#697586;

  /* Brand — teal primary + reserved amber accent */
  --primary:#0e7c6b;
  --primary-600:#0b6558;
  --primary-700:#094f45;
  --primary-050:#e4f3f0;
  --primary-100:#cfe9e4;
  --accent:#d99a2b;          /* used ONLY for pending / attention */
  --accent-050:#fbf1dc;

  /* Status */
  --ok:#0e7c6b; --warn:#b1791b; --bad:#c0392f; --info:#2f6fb0;

  --radius:14px;
  --radius-sm:10px;
  --shadow-sm:0 1px 2px rgba(23,33,43,.05), 0 1px 3px rgba(23,33,43,.04);
  --shadow-md:0 4px 14px rgba(23,33,43,.08);
  --shadow-lg:0 20px 50px rgba(15,32,39,.30);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  color:var(--ink); background:var(--bg); margin:0; min-height:100vh;
  display:flex; flex-direction:column; line-height:1.5;
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{font-family:'Inter',system-ui,sans-serif; font-weight:700; letter-spacing:-.02em; color:var(--ink)}
a{color:var(--primary); text-decoration:none}
a:hover{color:var(--primary-700)}
:focus-visible{outline:2px solid var(--primary); outline-offset:2px; border-radius:6px}

/* ---------- Left sidebar ---------- */
:root{ --sb-w:250px; }
.brand-mark{
  background:linear-gradient(135deg,var(--primary),var(--primary-600)); color:#fff;
  width:34px;height:34px;border-radius:9px;display:inline-flex;align-items:center;
  justify-content:center;font-weight:700;font-size:14px;letter-spacing:.02em;
  box-shadow:0 2px 6px rgba(14,124,107,.35); flex:none;
}
.brand-mark.sm{width:30px;height:30px;font-size:13px}
.role-dot{width:8px;height:8px;border-radius:50%;display:inline-block;background:var(--muted); flex:none}
.role-admin{background:var(--primary)} .role-subadmin{background:#3f78c2} .role-user{background:#5aa17f}

.app-topbar{display:none}
.sidebar{
  position:fixed; top:0; left:0; width:var(--sb-w); height:100vh;
  background:var(--surface); border-right:1px solid var(--line);
  display:flex; flex-direction:column; z-index:1040; box-shadow:var(--shadow-sm);
}
.sb-brand{
  display:flex; align-items:center; gap:.6rem; padding:1.05rem 1.15rem;
  font-weight:700; color:var(--ink); font-size:1.04rem; letter-spacing:-.02em;
  border-bottom:1px solid var(--line-2); min-height:60px;
}
.sb-brand span{overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
.sb-nav{flex:1; overflow-y:auto; padding:.7rem .7rem 1rem}
.sb-sec{font-size:.67rem; text-transform:uppercase; letter-spacing:.09em; color:var(--muted);
  font-weight:700; padding:.9rem .75rem .3rem}
.sb-nav > .sb-sec:first-child{padding-top:.25rem}
.sb-link{
  display:flex; align-items:center; gap:.7rem; padding:.62rem .75rem; margin:.1rem 0;
  border-radius:10px; color:var(--ink-2); font-size:.92rem; font-weight:500;
  position:relative; transition:background .15s,color .15s;
}
.sb-link i{font-size:1.05rem; width:1.25rem; text-align:center; opacity:.9; flex:none}
.sb-link:hover{background:var(--primary-050); color:var(--primary-700)}
.sb-link.active{background:var(--primary-050); color:var(--primary-700); font-weight:600}
.sb-link.active::before{content:""; position:absolute; left:-.7rem; top:.45rem; bottom:.45rem;
  width:3px; border-radius:0 3px 3px 0; background:var(--primary)}
.sb-foot{border-top:1px solid var(--line-2); padding:.8rem .85rem}
.sb-user{display:flex; align-items:center; gap:.6rem; margin-bottom:.65rem}
.sb-user .role-dot{width:10px;height:10px}
.sb-user-meta{min-width:0}
.sb-user-meta .nm{font-weight:600; font-size:.9rem; white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.sb-user-meta .rl{font-size:.76rem; color:var(--muted); white-space:nowrap; overflow:hidden; text-overflow:ellipsis}
.sb-signout{
  display:flex; align-items:center; justify-content:center; gap:.5rem;
  padding:.5rem .7rem; border:1px solid var(--line); border-radius:9px;
  color:var(--ink-2); font-size:.86rem; font-weight:500; background:var(--surface-2);
}
.sb-signout:hover{border-color:var(--primary-100); color:var(--primary-700); background:var(--primary-050)}
.sb-overlay{display:none}

/* ---------- Layout ---------- */
.app-shell{margin-left:var(--sb-w); min-height:100vh; display:flex; flex-direction:column}
.app-main{flex:1; max-width:1180px; width:100%; margin:0 auto; padding:1.75rem 1.5rem 3rem}
.app-footer{
  background:var(--surface); color:var(--muted); font-size:.8rem;
  padding:1rem; text-align:center; border-top:1px solid var(--line)
}
.page-head{
  display:flex; align-items:flex-end; justify-content:space-between; gap:1rem;
  margin-bottom:1.4rem; flex-wrap:wrap;
}
.page-head h1{font-size:1.55rem; margin:0; line-height:1.15}
.page-head .sub{color:var(--muted); font-size:.9rem; margin-top:.25rem; max-width:60ch}

/* ---------- Cards ---------- */
.card{
  border:1px solid var(--line); border-radius:var(--radius); background:var(--surface);
  box-shadow:var(--shadow-sm); overflow:hidden;
}
.card-head{
  padding:.85rem 1.1rem; border-bottom:1px solid var(--line-2); font-weight:600;
  font-size:.95rem; color:var(--ink); display:flex; align-items:center; gap:.5rem;
  background:linear-gradient(var(--surface),var(--surface-2));
}
.card-head .bi{color:var(--primary)}

/* ---------- Tables ---------- */
.table{margin-bottom:0}
.table thead th{
  background:var(--surface-2); color:var(--muted); border-bottom:1px solid var(--line);
  font-size:.72rem; font-weight:600; text-transform:uppercase; letter-spacing:.06em;
  padding:.7rem .9rem; white-space:nowrap;
}
.table td{vertical-align:middle; padding:.72rem .9rem; border-color:var(--line-2)}
.table tbody tr:last-child td{border-bottom:none}
.table tbody tr{transition:background .12s}
.table tbody tr:hover{background:var(--surface-2)}

/* ---------- Buttons ---------- */
.btn{border-radius:10px; font-weight:600; font-size:.9rem; padding:.5rem .95rem; transition:all .15s}
.btn:active{transform:translateY(1px)}
/* .btn-gold kept as the PRIMARY action (name retained for markup stability) */
.btn-gold{background:var(--primary); border:1px solid var(--primary); color:#fff; box-shadow:0 1px 2px rgba(14,124,107,.25)}
.btn-gold:hover{background:var(--primary-600); border-color:var(--primary-600); color:#fff}
.btn-gold:focus{color:#fff}
.btn-ink{background:var(--ink); border:1px solid var(--ink); color:#fff}
.btn-ink:hover{background:var(--ink-2); color:#fff}
.btn-outline-secondary{border-color:var(--line); color:var(--ink-2); background:var(--surface)}
.btn-outline-secondary:hover{background:var(--surface-2); border-color:var(--muted); color:var(--ink)}
.btn-outline-secondary.active{background:var(--primary-050); border-color:var(--primary-100); color:var(--primary-700)}
.btn-outline-danger{border-color:#efc9c5; color:var(--bad); background:var(--surface)}
.btn-outline-danger:hover{background:var(--bad); border-color:var(--bad); color:#fff}
.btn-sm{padding:.34rem .6rem; font-size:.82rem; border-radius:8px}

/* ---------- Forms ---------- */
.form-label{font-size:.85rem; font-weight:600; color:var(--ink-2); margin-bottom:.3rem}
.form-control,.form-select{
  border:1px solid var(--line); border-radius:10px; font-size:.92rem; padding:.5rem .7rem;
  color:var(--ink); background:var(--surface);
}
.form-control:focus,.form-select:focus{
  border-color:var(--primary); box-shadow:0 0 0 3px var(--primary-050);
}
.form-control::placeholder{color:#9aa4b1}
.form-text{color:var(--muted)}
.form-control-color{padding:.25rem; height:2.5rem; width:100%}

/* ---------- Status badges ---------- */
.badge-status{
  font-size:.72rem; font-weight:600; padding:.3em .65em; border-radius:999px;
  display:inline-flex; align-items:center; gap:.35em; line-height:1;
}
.badge-status::before{content:""; width:6px;height:6px;border-radius:50%; background:currentColor; opacity:.75}
.s-pending{background:var(--accent-050); color:#9a6b12}
.s-approved{background:var(--primary-050); color:var(--primary-700)}
.s-rejected{background:#fbe5e2; color:#a5352b}
.s-cancelled{background:#eceff2; color:#5b6672}
.s-open{background:#e4eefa; color:#245b93}
.s-resolved{background:var(--primary-050); color:var(--primary-700)}

/* ---------- Auth screens ---------- */
.auth-wrap{
  min-height:100vh; display:flex; align-items:center; justify-content:center; padding:1.5rem;
  background:
    radial-gradient(1100px 600px at 78% -12%, #12463f 0%, rgba(18,70,63,0) 60%),
    radial-gradient(900px 500px at 10% 110%, #0d3b34 0%, rgba(13,59,52,0) 55%),
    #0b2b27;
}
.auth-card{
  background:var(--surface); border-radius:18px; width:100%; max-width:420px;
  box-shadow:var(--shadow-lg); overflow:hidden; border:1px solid rgba(255,255,255,.06)
}
.auth-head{background:linear-gradient(160deg,#0e7c6b,#0b5850); padding:1.7rem; text-align:center; color:#fff}
.auth-head .brand-mark{
  width:50px;height:50px;font-size:20px;margin-bottom:.7rem;background:rgba(255,255,255,.16);
  box-shadow:none; border:1px solid rgba(255,255,255,.25)
}
.auth-head h1{font-size:1.3rem; margin:.2rem 0 0; color:#fff; letter-spacing:-.02em}
.auth-head p{color:rgba(255,255,255,.78); font-size:.85rem; margin:.35rem 0 0}
.auth-body{padding:1.7rem}
.otp-input{letter-spacing:.55rem; text-align:center; font-size:1.5rem; font-weight:700; font-variant-numeric:tabular-nums}
.lock-note{
  font-size:.78rem; color:var(--muted); display:flex; align-items:center; gap:.4rem;
  justify-content:center; margin-top:1.1rem; padding-top:1rem; border-top:1px solid var(--line-2)
}

/* ---------- Alerts ---------- */
.alert{border-radius:12px; border:1px solid transparent; font-size:.9rem; padding:.7rem 1rem}
.alert-success{background:var(--primary-050); border-color:var(--primary-100); color:var(--primary-700)}
.alert-danger{background:#fbe5e2; border-color:#f3cfca; color:#a5352b}
.alert-info{background:#e6f0f9; border-color:#d2e3f3; color:#245b93}
.alert-warning{background:var(--accent-050); border-color:#f0dcae; color:#9a6b12}

/* ---------- Calendar ---------- */
#calendar{background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:1rem; box-shadow:var(--shadow-sm)}
.fc{--fc-border-color:var(--line-2); --fc-today-bg-color:var(--primary-050); font-size:.9rem}
.fc .fc-toolbar-title{font-weight:700; letter-spacing:-.02em; font-size:1.15rem}
.fc .fc-button-primary{
  background:var(--surface); border:1px solid var(--line); color:var(--ink-2);
  font-weight:600; text-transform:capitalize; box-shadow:none; padding:.4rem .7rem
}
.fc .fc-button-primary:not(:disabled):hover{background:var(--surface-2); border-color:var(--muted); color:var(--ink)}
.fc .fc-button-primary:not(:disabled).fc-button-active,
.fc .fc-button-primary:not(:disabled):active{
  background:var(--primary) !important; border-color:var(--primary) !important; color:#fff !important
}
.fc .fc-button-primary:focus{box-shadow:0 0 0 3px var(--primary-050)}
.fc-event{border:none; border-radius:6px; padding:1px 4px; font-weight:500; font-size:.8rem; cursor:pointer}
.fc .fc-col-header-cell-cushion{color:var(--muted); font-weight:600; text-transform:uppercase; font-size:.72rem; letter-spacing:.05em}
.fc .fc-daygrid-day-number{color:var(--ink-2); font-weight:500}

/* ---------- Misc ---------- */
.empty{padding:2.75rem 1rem; text-align:center; color:var(--muted); font-size:.92rem}
.kv{display:grid; grid-template-columns:130px 1fr; gap:.5rem .9rem; font-size:.9rem}
.kv dt{color:var(--muted); font-weight:500}
.kv dd{margin:0; color:var(--ink)}
.legend{display:flex; gap:1.1rem; flex-wrap:wrap; font-size:.82rem; color:var(--muted); align-items:center}
.legend span{display:inline-flex; align-items:center; gap:.4rem}
.swatch{width:12px;height:12px;border-radius:4px;display:inline-block;border:1px solid rgba(0,0,0,.06)}

/* Availability hint box */
#availBox{font-size:.88rem; line-height:1.6}

/* Chips for selected invitees */
.chip{
  display:inline-flex; align-items:center; gap:.35rem; background:var(--primary-050);
  color:var(--primary-700); border:1px solid var(--primary-100); border-radius:999px;
  padding:.2rem .55rem; font-size:.8rem; font-weight:500; margin:.15rem .2rem 0 0
}
.chip button{border:none; background:none; color:var(--primary-700); cursor:pointer; padding:0; line-height:1; font-size:.95rem}
.chip button:hover{color:var(--bad)}

/* Tabs (segmented) */
.seg{display:inline-flex; background:var(--surface-2); border:1px solid var(--line); border-radius:10px; padding:3px}
.seg button{
  border:none; background:none; padding:.4rem .8rem; border-radius:8px; font-size:.85rem;
  font-weight:600; color:var(--muted); cursor:pointer
}
.seg button.on{background:var(--surface); color:var(--primary-700); box-shadow:var(--shadow-sm)}

/* Multi-select day toggles */
.daypick{display:flex; flex-wrap:wrap; gap:.4rem}
.daypick label{
  border:1px solid var(--line); border-radius:9px; padding:.4rem .7rem; font-size:.85rem;
  cursor:pointer; user-select:none; background:var(--surface); font-weight:500; color:var(--ink-2)
}
.daypick input{position:absolute; opacity:0; width:0; height:0}
.daypick input:checked + span{color:var(--primary-700)}
.daypick label:has(input:checked){background:var(--primary-050); border-color:var(--primary-100); color:var(--primary-700)}

@media (max-width:576px){
  .app-main{padding:1.1rem .8rem 2.2rem}
  .page-head h1{font-size:1.35rem}
  .kv{grid-template-columns:1fr}
  .kv dt{margin-top:.4rem}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important; animation:none !important}
}

/* ---------- Brand logo (admin-uploaded) ---------- */
.brand-logo{height:30px;width:auto;max-width:150px;border-radius:6px;display:inline-block;vertical-align:middle;object-fit:contain}

/* ---------- Settings page bits ---------- */
.logo-preview{height:46px;max-width:180px;object-fit:contain;border:1px solid var(--line);border-radius:8px;background:var(--surface-2);padding:4px}
.color-field{display:flex;align-items:center;gap:.6rem}
.color-field input[type=color]{width:52px;height:40px;padding:3px;border-radius:8px;border:1px solid var(--line);background:var(--surface)}
.kpi{display:flex;gap:.9rem;flex-wrap:wrap;margin-bottom:1.3rem}
.kpi .card{flex:1;min-width:150px;padding:1rem 1.1rem}
.kpi .n{font-size:1.7rem;font-weight:700;letter-spacing:-.02em;line-height:1}
.kpi .l{color:var(--muted);font-size:.82rem;margin-top:.2rem}
.kpi .bi{color:var(--primary)}

/* ============================================================
   Responsive / mobile polish
   ============================================================ */
@media (max-width:991.98px){
  .app-topbar{
    display:flex; align-items:center; gap:.6rem; position:sticky; top:0; z-index:1035;
    background:var(--surface); border-bottom:1px solid var(--line);
    padding:.5rem .8rem; box-shadow:var(--shadow-sm); min-height:56px;
  }
  .sb-toggle{
    background:var(--surface); border:1px solid var(--line); border-radius:9px;
    width:40px; height:40px; font-size:1.35rem; color:var(--ink-2);
    display:grid; place-items:center; cursor:pointer;
  }
  .tb-brand{display:flex; align-items:center; gap:.5rem; font-weight:700; color:var(--ink); font-size:1rem}
  .tb-brand span{overflow:hidden; text-overflow:ellipsis; white-space:nowrap}
  .tb-brand .brand-logo{height:28px}
  .sidebar{transform:translateX(-100%); transition:transform .22s ease}
  .sidebar.open{transform:translateX(0)}
  .sb-overlay{
    display:block; position:fixed; inset:0; background:rgba(15,32,39,.45);
    opacity:0; visibility:hidden; transition:opacity .22s; z-index:1039;
  }
  .sb-overlay.show{opacity:1; visibility:visible}
  .app-shell{margin-left:0}
  body.sb-lock{overflow:hidden}
}
@media (max-width:767.98px){
  .app-main{padding:1rem .75rem 2rem}
  .page-head{margin-bottom:1rem}
  .page-head h1{font-size:1.3rem}
  .page-head .btn{align-self:flex-start}
  /* Stack the two-column layouts */
  .row.g-3 > [class*="col-lg-"]{margin-bottom:0}
  /* Calendar: let the toolbar wrap instead of squashing */
  .fc .fc-toolbar.fc-header-toolbar{flex-direction:column; gap:.6rem; align-items:stretch}
  .fc .fc-toolbar-chunk{display:flex; justify-content:center}
  .fc .fc-toolbar-title{font-size:1rem}
  .fc .fc-button{padding:.35rem .55rem; font-size:.82rem}
  #calendar{padding:.6rem}
  /* Comfortable tap targets */
  .btn{padding:.6rem 1rem}
  .btn-sm{padding:.4rem .7rem}
  .seg{width:100%; overflow-x:auto}
  .seg button{flex:1; white-space:nowrap}
  .kpi .card{min-width:calc(50% - .5rem)}
  /* Tables: keep horizontal scroll but hint it */
  .table-responsive{-webkit-overflow-scrolling:touch}
  .table td, .table th{white-space:nowrap}
}
@media (max-width:420px){
  .navbar-brand{font-size:.95rem}
  .brand-logo{height:26px}
  .kpi .card{min-width:100%}
  .otp-input{letter-spacing:.4rem; font-size:1.3rem}
}

/* ---------- Demo login (client testing) ---------- */
.demo-box{margin-bottom:.3rem}
.demo-cap{font-size:.72rem; text-transform:uppercase; letter-spacing:.07em; color:var(--muted);
  font-weight:700; margin-bottom:.65rem; display:flex; align-items:center; gap:.4rem}
.demo-cap .bi{color:var(--accent)}
.demo-btn{
  width:100%; display:flex; align-items:center; gap:.75rem; text-align:left;
  background:var(--surface); border:1px solid var(--line); border-radius:12px;
  padding:.7rem .85rem; margin-bottom:.6rem; cursor:pointer; transition:.15s;
}
.demo-btn:hover{border-color:var(--primary-100); background:var(--primary-050)}
.demo-ic{width:38px; height:38px; border-radius:10px; background:var(--primary-050);
  color:var(--primary-700); display:grid; place-items:center; font-size:1.15rem; flex:none}
.demo-btn:hover .demo-ic{background:#fff}
.demo-tx{flex:1; min-width:0; display:flex; flex-direction:column}
.demo-tx .t{font-weight:600; color:var(--ink); font-size:.92rem}
.demo-tx .s{font-size:.78rem; color:var(--muted)}
.demo-go{color:var(--muted); flex:none}
.demo-btn:hover .demo-go{color:var(--primary-700)}
.auth-sep{display:flex; align-items:center; gap:.7rem; color:var(--muted); font-size:.78rem; margin:.9rem 0}
.auth-sep::before,.auth-sep::after{content:""; flex:1; height:1px; background:var(--line)}