:root{
  --maroon:#3b1f14;
  --maroon-dark:#2a150d;
  --gold:#c9973c;
  --gold-light:#e2b96a;
  --cream:#faf6ef;
  --cream-alt:#f2ead9;
  --text-dark:#2b211b;
  --text-dim:#6b5f54;
  --text-light:#f5efe6;
  --radius:14px;
  --shadow:0 6px 20px rgba(43,33,27,.12);

  --c-trong:#3fa96a;
  --c-trong-bg:#e4f7ec;
  --c-dang-o:#d9483a;
  --c-dang-o-bg:#fde6e3;
  --c-da-dat:#d99a30;
  --c-da-dat-bg:#fdf1dc;
  --c-bao-tri:#7b7b7b;
  --c-bao-tri-bg:#ececec;
}

*{box-sizing:border-box;margin:0;padding:0;}

html,body{
  height:100%;
}

body{
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
  color:var(--text-dark);
  background:var(--cream-alt);
  padding-bottom:76px;
  min-height:100vh;
}

button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;font-size:16px;}

/* ---------- Topbar ---------- */
.topbar{
  position:sticky;top:0;z-index:20;
  background:var(--maroon);
  color:var(--text-light);
  display:flex;align-items:center;justify-content:space-between;
  padding:12px 16px;
  box-shadow:var(--shadow);
}
.topbar-brand{display:flex;align-items:center;gap:10px;}
.topbar-logo{
  width:38px;height:38px;border-radius:50%;
  background:var(--gold);color:var(--maroon-dark);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;flex-shrink:0;
}
.topbar-title{font-weight:700;font-size:16px;}
.topbar-sub{font-size:11px;color:var(--gold-light);}
.refresh-btn{
  background:rgba(255,255,255,.12);border:none;color:var(--text-light);
  width:36px;height:36px;border-radius:50%;font-size:18px;
  display:flex;align-items:center;justify-content:center;
}
.refresh-btn.spinning{animation:spin .7s linear;}
@keyframes spin{to{transform:rotate(360deg);}}

/* ---------- App / layout ---------- */
.app{
  max-width:760px;margin:0 auto;padding:14px 12px 20px;
}

.section-title{
  font-size:15px;font-weight:700;color:var(--maroon);
  margin:18px 2px 8px;display:flex;align-items:center;justify-content:space-between;
}

/* ---------- Tabbar ---------- */
.tabbar{
  position:fixed;bottom:0;left:0;right:0;z-index:20;
  display:flex;background:#fff;border-top:1px solid #e6ddcf;
  box-shadow:0 -4px 16px rgba(43,33,27,.08);
  padding-bottom:env(safe-area-inset-bottom);
}
.tab-btn{
  flex:1;background:none;border:none;padding:8px 2px 6px;
  display:flex;flex-direction:column;align-items:center;gap:2px;
  color:var(--text-dim);font-size:11px;
}
.tab-btn .tab-icon{font-size:19px;}
.tab-btn.active{color:var(--maroon);font-weight:700;}

/* ---------- Dashboard cards ---------- */
.stat-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:10px;
}
.stat-card{
  background:#fff;border-radius:var(--radius);padding:14px;box-shadow:var(--shadow);
  border-left:4px solid var(--gold);
}
.stat-card .num{font-size:24px;font-weight:800;color:var(--maroon);}
.stat-card .label{font-size:12px;color:var(--text-dim);margin-top:2px;}
.stat-card.wide{grid-column:1/-1;display:flex;justify-content:space-between;align-items:center;}

.quick-actions{display:flex;gap:10px;margin-top:14px;}
.quick-actions button{
  flex:1;background:var(--maroon);color:var(--text-light);border:none;
  border-radius:var(--radius);padding:12px;font-weight:700;font-size:13px;
  display:flex;flex-direction:column;align-items:center;gap:4px;
}
.quick-actions button.secondary{background:var(--gold);color:var(--maroon-dark);}
.quick-actions .qa-icon{font-size:20px;}

/* ---------- Room grid ---------- */
.room-filter{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:10px;}
.chip{
  border:1px solid #e6ddcf;background:#fff;border-radius:999px;
  padding:6px 12px;font-size:12px;color:var(--text-dim);
}
.chip.active{background:var(--maroon);color:#fff;border-color:var(--maroon);}

.room-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(96px,1fr));gap:10px;
}
.room-card{
  border-radius:12px;padding:10px 8px;text-align:center;border:none;
  box-shadow:var(--shadow);
  display:flex;flex-direction:column;align-items:center;gap:2px;
}
.room-card .rc-so{font-size:17px;font-weight:800;}
.room-card .rc-loai{font-size:10px;opacity:.85;}
.room-card .rc-trang-thai{font-size:10px;font-weight:700;margin-top:4px;}

.room-card.trong{background:var(--c-trong-bg);color:var(--c-trong);}
.room-card.dang_o{background:var(--c-dang-o-bg);color:var(--c-dang-o);}
.room-card.da_dat{background:var(--c-da-dat-bg);color:var(--c-da-dat);}
.room-card.bao_tri{background:var(--c-bao-tri-bg);color:var(--c-bao-tri);}

.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:11px;color:var(--text-dim);margin-bottom:10px;}
.legend span{display:inline-flex;align-items:center;gap:4px;}
.dot{width:9px;height:9px;border-radius:50%;display:inline-block;}
.dot.trong{background:var(--c-trong);}
.dot.dang_o{background:var(--c-dang-o);}
.dot.da_dat{background:var(--c-da-dat);}
.dot.bao_tri{background:var(--c-bao-tri);}

/* ---------- Lists / cards ---------- */
.list-card{
  background:#fff;border-radius:var(--radius);padding:12px 14px;box-shadow:var(--shadow);
  margin-bottom:10px;
}
.list-card .lc-top{display:flex;justify-content:space-between;align-items:flex-start;gap:8px;}
.list-card .lc-title{font-weight:700;color:var(--maroon);font-size:14.5px;}
.list-card .lc-sub{font-size:12.5px;color:var(--text-dim);margin-top:2px;}
.list-card .lc-badge{
  font-size:10.5px;font-weight:700;padding:3px 9px;border-radius:999px;white-space:nowrap;
}
.badge-dang_o,.badge-cho_nhan{background:var(--c-da-dat-bg);color:var(--c-da-dat);}
.badge-da_tra_phong,.badge-da_nhan{background:var(--c-trong-bg);color:var(--c-trong);}
.badge-da_huy{background:var(--c-bao-tri-bg);color:var(--c-bao-tri);}

.lc-actions{display:flex;gap:8px;margin-top:10px;}
.lc-actions button{
  flex:1;border:1px solid var(--maroon);background:#fff;color:var(--maroon);
  border-radius:8px;padding:8px;font-size:12.5px;font-weight:700;
}
.lc-actions button.primary{background:var(--maroon);color:#fff;}
.lc-actions button.danger{border-color:#c0392b;color:#c0392b;}

.empty-state{
  text-align:center;color:var(--text-dim);padding:30px 10px;font-size:13.5px;
}

/* ---------- Search / inputs ---------- */
.search-box{
  display:flex;gap:8px;margin-bottom:10px;
}
.search-box input{
  flex:1;border:1px solid #e6ddcf;border-radius:10px;padding:10px 12px;font-size:14px;background:#fff;
}
.btn-fab{
  background:var(--maroon);color:#fff;border:none;border-radius:10px;
  padding:10px 14px;font-weight:700;font-size:13px;white-space:nowrap;
}

/* ---------- Forms ---------- */
.form-group{margin-bottom:12px;}
.form-group label{display:block;font-size:12.5px;color:var(--text-dim);margin-bottom:5px;font-weight:600;}
.form-group input,.form-group select,.form-group textarea{
  width:100%;border:1px solid #e6ddcf;border-radius:10px;padding:10px 12px;background:#fff;
}
.form-row{display:flex;gap:10px;}
.form-row .form-group{flex:1;}
.form-hint{font-size:11.5px;color:var(--text-dim);margin-top:4px;}

/* ---------- Modal ---------- */
.modal-backdrop{
  position:fixed;inset:0;background:rgba(43,33,27,.5);z-index:50;
  display:flex;align-items:flex-end;justify-content:center;
}
.modal-sheet{
  background:#fff;width:100%;max-width:760px;border-radius:18px 18px 0 0;
  padding:18px 16px calc(20px + env(safe-area-inset-bottom));
  max-height:88vh;overflow-y:auto;
  animation:slideup .2s ease-out;
}
@keyframes slideup{from{transform:translateY(30px);opacity:0;}to{transform:translateY(0);opacity:1;}}
.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;}
.modal-header h3{color:var(--maroon);font-size:16.5px;}
.modal-close{background:none;border:none;font-size:22px;color:var(--text-dim);line-height:1;}

.modal-footer{display:flex;gap:10px;margin-top:16px;}
.modal-footer button{
  flex:1;border:none;border-radius:10px;padding:12px;font-weight:700;font-size:14px;
}
.modal-footer .btn-cancel{background:var(--cream-alt);color:var(--text-dim);}
.modal-footer .btn-submit{background:var(--maroon);color:#fff;}

.summary-box{
  background:var(--cream-alt);border-radius:10px;padding:12px;margin-bottom:12px;font-size:13px;
}
.summary-box .sb-row{display:flex;justify-content:space-between;padding:3px 0;}
.summary-box .sb-total{font-weight:800;color:var(--maroon);font-size:16px;border-top:1px dashed #d8cbb4;margin-top:6px;padding-top:8px;}

/* ---------- Toast ---------- */
.toast-root{
  position:fixed;top:70px;left:50%;transform:translateX(-50%);z-index:80;
  display:flex;flex-direction:column;gap:8px;align-items:center;width:calc(100% - 32px);max-width:420px;
}
.toast{
  background:var(--maroon-dark);color:#fff;padding:10px 16px;border-radius:10px;
  font-size:13px;box-shadow:var(--shadow);animation:fadein .15s ease-out;text-align:center;
}
.toast.error{background:#8a2b1f;}
.toast.success{background:#2e6b45;}
@keyframes fadein{from{opacity:0;transform:translateY(-6px);}to{opacity:1;transform:translateY(0);}}

/* ---------- Revenue ---------- */
.revenue-day{
  display:flex;justify-content:space-between;align-items:center;
  background:#fff;border-radius:10px;padding:10px 14px;margin-bottom:6px;box-shadow:var(--shadow);
  font-size:13px;
}
.revenue-day .rd-date{font-weight:700;color:var(--maroon);}
.revenue-day .rd-amount{font-weight:800;color:var(--gold-light) ;background:var(--maroon);padding:3px 10px;border-radius:999px;font-size:12px;color:#fff;}

.loading{
  text-align:center;color:var(--text-dim);padding:24px;font-size:13px;
}

@media (min-width:640px){
  .stat-grid{grid-template-columns:repeat(4,1fr);}
  .stat-card.wide{grid-column:span 2;}
}