/* =====================================================================
   Giao diện quầy: ngón cái một tay, nút to, ít chữ.
   Mọi vùng chạm >= 56px. Không dùng framework để tải nhanh trên 3G.
   ===================================================================== */
:root {
  --bg: #f1f5f9;
  --card: #ffffff;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --primary: #1d4ed8;
  --primary-ink: #ffffff;
  --ok: #15803d;
  --warn: #b45309;
  --danger: #b91c1c;
  --radius: 14px;
  --tap: 56px;
  --safe-b: env(safe-area-inset-bottom, 0px);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220; --card: #131c2e; --ink: #e8eefc; --muted: #93a3bd;
    --line: #24314b; --primary: #3b82f6; --primary-ink: #061020;
  }
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg); color: var(--ink);
  font: 16px/1.45 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  padding-bottom: calc(100px + var(--safe-b));
  overscroll-behavior-y: contain;
}
.hidden { display: none !important; }
.muted { color: var(--muted); font-size: 14px; }
.center { text-align: center; }
.pad { padding: 12px; }
.error { color: var(--danger); font-size: 14px; margin: 6px 0; }

/* ------------------------------------------------------------- topbar */
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between;
  gap: 8px; padding: 10px 12px;
  background: var(--card); border-bottom: 1px solid var(--line);
}
.topbar-title { display: flex; flex-direction: column; line-height: 1.2; }
.topbar-title strong { font-size: 17px; }
.icon-btn {
  min-width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--line);
  background: var(--card); color: var(--ink); font-size: 20px;
}

/* -------------------------------------------------------------- nút */
.btn {
  min-height: var(--tap); padding: 0 18px; border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font-size: 17px; font-weight: 600; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  text-decoration: none;
}
.btn:active { transform: scale(.98); }
.btn[disabled] { opacity: .45; }
.btn-primary { background: var(--primary); color: var(--primary-ink); border-color: transparent; }
.btn-ghost { background: transparent; }
.btn-danger { background: var(--danger); color: #fff; border-color: transparent; }
.btn-ok { background: var(--ok); color: #fff; border-color: transparent; }
.btn-xl { flex: 1; min-height: 62px; font-size: 19px; }
.btn-scan { min-width: 64px; font-size: 26px; }

/* ------------------------------------------------------------- thẻ */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px; margin-bottom: 12px;
}
.section-title { font-size: 14px; text-transform: uppercase; letter-spacing: .04em;
  color: var(--muted); margin: 14px 0 8px; }

/* --------------------------------------------------- khách (thu gọn) */
.cust summary {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 48px; cursor: pointer; font-weight: 600; list-style: none;
}
.cust summary::-webkit-details-marker { display: none; }
.cust-body { padding-top: 8px; }
.field { display: block; margin-bottom: 10px; }
.field span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field input, .search {
  width: 100%; min-height: var(--tap); padding: 0 14px; font-size: 17px;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--bg); color: var(--ink);
}
.search.big { font-size: 20px; letter-spacing: .06em; }
.hit { background: rgba(21,128,61,.12); border-radius: 10px; padding: 8px 12px; font-size: 14px; }
.badge {
  background: var(--ok); color: #fff; border-radius: 999px;
  padding: 3px 10px; font-size: 13px; font-weight: 700;
}

/* ------------------------------------------------- lưới dịch vụ / SL */
.grid-services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.svc {
  min-height: 92px; border-radius: var(--radius); border: 2px solid transparent;
  color: #fff; padding: 10px; text-align: left; font-size: 17px; font-weight: 700;
  display: flex; flex-direction: column; justify-content: space-between;
}
.svc small { font-weight: 500; opacity: .92; font-size: 13px; }
.svc.selected { outline: 4px solid var(--ink); outline-offset: 2px; }

.qty-panel {
  position: sticky; bottom: calc(140px + var(--safe-b)); z-index: 10;
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 12px; margin-top: 12px;
  box-shadow: 0 -6px 24px rgba(0,0,0,.12);
}
.qty-head { display: flex; align-items: center; justify-content: space-between; font-weight: 700; }
.grid-qty { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.grid-qty button {
  min-height: 64px; border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font-size: 19px; font-weight: 700;
}
.grid-qty button b { display: block; font-size: 12px; font-weight: 500; color: var(--muted); }
.qty-custom { display: flex; gap: 8px; margin-top: 10px; }
.qty-custom input {
  flex: 1; min-height: var(--tap); border-radius: var(--radius);
  border: 1px solid var(--line); background: var(--bg); color: var(--ink);
  padding: 0 14px; font-size: 17px;
}

/* --------------------------------------------------------- giỏ phiếu */
.cart-items { list-style: none; margin: 0; padding: 0; }
.cart-items li {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 0; border-bottom: 1px solid var(--line);
}
.cart-items li .grow { flex: 1; }
.cart-items li .amt { font-weight: 700; }
.cart-items li button { width: 44px; height: 44px; border-radius: 10px;
  border: 1px solid var(--line); background: transparent; color: var(--danger); font-size: 18px; }
.cart-total { display: flex; justify-content: space-between; align-items: center;
  padding-top: 10px; font-size: 18px; }
.cart-total strong { font-size: 24px; }

/* ------------------------------------------------------- thanh dưới */
.sticky-bar {
  position: fixed; left: 0; right: 0; bottom: calc(68px + var(--safe-b));
  display: flex; gap: 10px; padding: 10px 12px;
  background: linear-gradient(to top, var(--bg) 70%, transparent);
}
.tabbar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--card); border-top: 1px solid var(--line);
  padding-bottom: var(--safe-b);
}
.tab-btn {
  border: 0; background: transparent; color: var(--muted);
  min-height: 68px; font-size: 12px; font-weight: 600; position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
}
.tab-btn span { font-size: 22px; }
.tab-btn.active { color: var(--primary); }
.nav-badge {
  position: absolute; top: 8px; right: 22%; background: var(--danger); color: #fff;
  border-radius: 999px; font-size: 11px; font-style: normal; padding: 1px 6px; font-weight: 700;
}

/* ------------------------------------------------------------- tabs */
.tabs {
  position: sticky; top: 64px; z-index: 15;
  display: flex; gap: 8px; overflow-x: auto; padding: 10px 12px;
  background: var(--bg); border-bottom: 1px solid var(--line);
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs button {
  flex: 0 0 auto; min-height: 46px; padding: 0 16px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font-size: 15px; font-weight: 600; white-space: nowrap;
}
.tabs button.active { background: var(--primary); color: var(--primary-ink); border-color: transparent; }

/* ------------------------------------------------------- danh sách đơn */
.list { display: flex; flex-direction: column; gap: 10px; margin-top: 12px; }
.order {
  background: var(--card); border: 1px solid var(--line); border-left: 6px solid var(--primary);
  border-radius: var(--radius); padding: 12px;
}
.order.overdue { border-left-color: var(--danger); }
.order.ready { border-left-color: var(--ok); }
.order-top { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.order-code { font-size: 22px; font-weight: 800; letter-spacing: .04em; }
.order-total { font-size: 18px; font-weight: 700; }
.order-meta { color: var(--muted); font-size: 14px; margin: 4px 0 10px; }
.order-actions { display: flex; gap: 8px; }
.order-actions .btn { flex: 1; min-height: 52px; font-size: 16px; }
.pill { display: inline-block; padding: 2px 10px; border-radius: 999px;
  font-size: 12px; font-weight: 700; background: var(--bg); color: var(--muted); }
.pill.unpaid { background: rgba(185,28,28,.15); color: var(--danger); }
.pill.paid { background: rgba(21,128,61,.15); color: var(--ok); }

/* ---------------------------------------------------------- trả đồ */
.scan-row { display: flex; gap: 8px; }
.scanner { width: 100%; border-radius: var(--radius); margin-top: 10px; background: #000; max-height: 46vh; }
.detail-total { font-size: 34px; font-weight: 800; text-align: center; margin: 6px 0 2px; }
.pay-methods { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 10px 0; }
.pay-methods button { min-height: 58px; border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--bg); color: var(--ink); font-size: 15px; font-weight: 700; }
.pay-methods button.active { background: var(--primary); color: var(--primary-ink); border-color: transparent; }

/* ----------------------------------------------------------- report */
.stat { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.stat .card { margin: 0; }
.stat .num { font-size: 26px; font-weight: 800; }

/* ------------------------------------------------------ modal/toast */
.modal { position: fixed; inset: 0; z-index: 60; background: rgba(2,6,23,.7);
  display: flex; align-items: center; justify-content: center; padding: 16px; }
.modal-box { background: var(--card); border-radius: 20px; padding: 18px;
  width: 100%; max-width: 420px; text-align: center; max-height: 92vh; overflow: auto; }
.ticket-code { font-size: 40px; font-weight: 900; letter-spacing: .06em; }
.ticket-qr { width: 200px; height: 200px; margin: 10px auto; display: block; }
.ticket-info { color: var(--muted); font-size: 15px; margin-bottom: 12px; }
.modal-actions { display: flex; gap: 10px; }
.modal-actions .btn { flex: 1; }

.toast {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(96px + var(--safe-b)); z-index: 80;
  background: var(--ink); color: var(--bg); padding: 12px 18px;
  border-radius: 999px; font-weight: 600; max-width: 92vw; text-align: center;
}
.toast.err { background: var(--danger); color: #fff; }

/* ------------------------------------------------------------- lock */
.lock { position: fixed; inset: 0; z-index: 100; background: var(--bg);
  display: flex; align-items: center; justify-content: center; padding: 20px; }
.lock-box { width: 100%; max-width: 340px; text-align: center; }
.pin-input { width: 100%; min-height: 64px; font-size: 30px; text-align: center;
  letter-spacing: .5em; border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--card); color: var(--ink); margin: 12px 0; }
.lock-box .btn { width: 100%; }

/* ============================================================ HÀNG ĐỢI */
.topbar-actions{display:flex; gap:8px}

.eta{
  display:flex; align-items:baseline; gap:10px; flex-wrap:wrap;
  margin-top:10px; padding-top:10px; border-top:1px dashed var(--line);
}
.eta-label{font-size:13px; color:var(--muted)}
.eta strong{font-size:20px}
.eta.warn{color:var(--warn)}
.eta.warn strong{color:var(--warn)}
.eta .muted{width:100%}

.banner{
  display:flex; gap:10px; align-items:flex-start;
  border-radius:var(--radius); padding:12px 14px; margin-bottom:12px;
  background:rgba(180,83,9,.12); color:var(--warn); font-size:14px; font-weight:600;
}

/* ------------------------------------------------------- màn cấu hình */
.grid2{display:grid; grid-template-columns:1fr 1fr; gap:10px}
.seg{display:grid; grid-template-columns:1fr 1fr; gap:8px}
.seg button{
  min-height:52px; border-radius:var(--radius); border:1px solid var(--line);
  background:var(--bg); color:var(--ink); font-size:15px; font-weight:600;
}
.seg button.active{background:var(--primary); color:var(--primary-ink); border-color:transparent}

.card.preview{background:rgba(29,78,216,.07); border-color:transparent}
.q-row{display:flex; justify-content:space-between; gap:12px; padding:5px 0; font-size:15px}
.q-row strong{font-variant-numeric:tabular-nums}
.q-bar{height:8px; border-radius:999px; background:var(--line); overflow:hidden; margin:8px 0 4px}
.q-bar i{display:block; height:100%; background:var(--primary); border-radius:999px}
.q-bar.over i{background:var(--danger)}

/* Thanh hành động cố định không được che nội dung cuối màn nhận đồ. */
#screen-checkin .pad { padding-bottom: 104px; }

/* ====================================================== ĐĂNG NHẬP */
.lock-logo { font-size: 44px; margin-bottom: 6px; }
.lock-box h1 { font-size: 22px; margin: 0 0 4px; }
.lock-box form { margin-top: 18px; text-align: left; }
.lock-box .field span { text-align: left; }
.lock-box .btn { width: 100%; margin-top: 6px; }

/* ================================================== MENU TÀI KHOẢN */
.sheet {
  position: fixed; inset: 0; z-index: 70; background: rgba(2,6,23,.6);
  display: flex; align-items: flex-end; justify-content: center;
}
.sheet-box {
  background: var(--card); width: 100%; max-width: 460px;
  border-radius: 20px 20px 0 0; padding: 18px;
  padding-bottom: calc(18px + var(--safe-b));
  display: flex; flex-direction: column; gap: 10px;
}
.sheet-head { display: flex; flex-direction: column; margin-bottom: 4px; }
.sheet-head strong { font-size: 18px; }

/* ==================================================== KHU QUẢN TRỊ */
.screen-head { display: flex; align-items: center; gap: 10px; margin-bottom: 4px; }
.screen-head h2 { font-size: 20px; margin: 0; flex: 1; }
.screen-head .back { min-height: 44px; padding: 0 12px; font-size: 15px; }

.admin-grid { display: grid; gap: 10px; }
@media (min-width: 640px) { .admin-grid { grid-template-columns: repeat(2, 1fr); } }
.admin-tile {
  display: grid; grid-template-columns: 44px 1fr; gap: 4px 12px;
  align-items: center; text-align: left;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 14px; color: var(--ink); min-height: 76px;
}
.admin-tile .ic { grid-row: span 2; font-size: 26px; text-align: center; }
.admin-tile b { font-size: 17px; }
.admin-tile em { font-style: normal; font-size: 13px; color: var(--muted); }

.select {
  width: 100%; min-height: var(--tap); padding: 0 12px; font-size: 16px;
  border-radius: var(--radius); border: 1px solid var(--line);
  background: var(--bg); color: var(--ink);
}
.seg3 { grid-template-columns: repeat(3, 1fr); margin-bottom: 12px; }

/* Thẻ tài khoản / cơ sở / vật tư */
.row-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 12px; display: flex; flex-direction: column; gap: 8px;
}
.row-card.off { opacity: .55; }
.row-card.low { border-left: 6px solid var(--warn); }
.row-top { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.row-top strong { font-size: 17px; }
.row-top .num { font-size: 18px; font-weight: 700; font-variant-numeric: tabular-nums; }
.row-meta { color: var(--muted); font-size: 14px; }
.row-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.row-actions .btn { flex: 1; min-height: 46px; font-size: 15px; padding: 0 10px; }
.pill.role-admin { background: rgba(29,78,216,.15); color: var(--primary); }
.pill.role-staff { background: var(--bg); color: var(--muted); }
.pill.warn { background: rgba(180,83,9,.15); color: var(--warn); }

/* Bảng nhỏ trong báo cáo */
.mini-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.mini-table td { padding: 7px 0; border-bottom: 1px solid var(--line); }
.mini-table tr:last-child td { border-bottom: 0; }
.mini-table td:last-child { text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; }
.spark { display: flex; align-items: flex-end; gap: 3px; height: 60px; margin: 10px 0 4px; }
.spark i { flex: 1; background: var(--primary); border-radius: 3px 3px 0 0; min-height: 2px; }
.spark i.zero { background: var(--line); }

/* Hộp thoại nhập liệu dùng chung */
.form-modal .modal-box { text-align: left; }
.form-modal h3 { margin: 0 0 12px; font-size: 19px; }
.form-modal .field span { text-align: left; }