/* ============================================================
   2DAQUATIC POS v2 — Design tokens (theo brand hiện có của web)
   ============================================================ */
:root {
  --ink: #0a1628;
  --ink-soft: #14243f;
  --reef: #00a896;
  --teal: #00d4b8;
  --teal-deep: #16a085;
  --coral: #ff6b4a;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #1a2438;
  --text-mute: #64748b;
  --danger: #e5484d;
  --warning: #f5a623;
  --success: #16a085;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(10,22,40,0.06), 0 4px 12px rgba(10,22,40,0.04);
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Be Vietnam Pro', 'Inter', -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ---------- Layout ---------- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 240px;
  background: var(--ink);
  color: #fff;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; bottom: 0; left: 0;
  transition: transform 0.2s ease;
  z-index: 40;
}

.sidebar-brand {
  padding: 22px 20px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex; align-items: center; gap: 10px;
}
.sidebar-brand .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 8px var(--teal); }

.nav-group { padding: 16px 12px; }
.nav-label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: rgba(255,255,255,0.4); padding: 8px 12px 6px; }
.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border-radius: 8px;
  color: rgba(255,255,255,0.75);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.nav-item:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-item.active { background: var(--teal-deep); color: #fff; font-weight: 600; }
.nav-item .icon { width: 18px; text-align: center; }
.nav-item.locked { opacity: 0.35; cursor: not-allowed; }
.nav-item.locked:hover { background: transparent; color: rgba(255,255,255,0.75); }

.sidebar-footer {
  margin-top: auto;
  padding: 14px 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
}
.sidebar-footer .role-badge {
  display: inline-block;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 20px;
  background: rgba(0,212,184,0.15);
  color: var(--teal);
  margin-top: 4px;
}
.sidebar-footer .logout-btn {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  cursor: pointer;
}
.sidebar-footer .logout-btn:hover { color: #fff; }

.main {
  flex: 1;
  margin-left: 240px;
  min-height: 100vh;
}

.topbar {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 28px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 30;
}
.topbar h1 { font-family: var(--font-display); font-size: 22px; font-weight: 600; color: var(--ink); }
.topbar .subtitle { font-size: 13px; color: var(--text-mute); margin-top: 2px; }

.content { padding: 24px 28px 60px; max-width: 1440px; margin: 0 auto; width: 100%; }

/* ---------- Cards / stats ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  box-shadow: var(--shadow);
}
.stat-card .label { font-size: 12px; color: var(--text-mute); text-transform: uppercase; letter-spacing: 0.04em; }
.stat-card .value { font-family: var(--font-display); font-size: 28px; font-weight: 600; color: var(--ink); margin-top: 6px; }
.stat-card .delta { font-size: 12px; margin-top: 6px; }
.stat-card .delta.up { color: var(--success); }
.stat-card .delta.down { color: var(--danger); }
.stat-card.accent { border-left: 3px solid var(--teal); }
.stat-card.warn { border-left: 3px solid var(--warning); }
.stat-card.danger-card { border-left: 3px solid var(--danger); }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 20px;
}
.panel-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.panel-header h2 { font-size: 15px; font-weight: 600; color: var(--ink); }
.panel-body { padding: 18px 20px; }

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-mute);
}
.empty-state .icon { font-size: 28px; margin-bottom: 8px; }

/* ---------- Table ---------- */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-mute); padding: 10px 12px; border-bottom: 1px solid var(--border); }
td { padding: 12px; border-bottom: 1px solid var(--border); }
tr:last-child td { border-bottom: none; }
.badge { display: inline-block; padding: 2px 9px; border-radius: 20px; font-size: 12px; font-weight: 500; }
.badge.wholesale { background: #eef2ff; color: #4338ca; }
.badge.retail { background: #ecfdf5; color: var(--teal-deep); }
.badge.debt { background: #fef2f2; color: var(--danger); }
.badge.paid { background: #ecfdf5; color: var(--success); }

/* ---------- Buttons / forms ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 16px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: filter 0.15s, transform 0.1s;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--teal-deep); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { background: var(--surface); color: var(--ink); border: 1px solid var(--border); }
.btn-secondary:hover { background: #f8fafc; }
.btn-danger { background: var(--danger); color: #fff; }

input, select, textarea {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13.5px;
  font-family: var(--font-body);
  background: var(--surface);
  color: var(--text);
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--teal); outline-offset: 1px; border-color: var(--teal); }
label { display: block; font-size: 12.5px; font-weight: 600; color: var(--text-mute); margin-bottom: 5px; }
.field { margin-bottom: 14px; }

/* ---------- Login ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(160deg, var(--ink) 0%, #0d2036 55%, var(--ink) 100%);
  padding: 20px;
}
.login-card {
  background: var(--surface);
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%;
  max-width: 380px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
}
.login-brand {
  text-align: center;
  margin-bottom: 28px;
}
.login-brand .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--teal); display: inline-block; box-shadow: 0 0 10px var(--teal); margin-right: 8px; }
.login-brand h1 { font-family: var(--font-display); font-size: 24px; color: var(--ink); display: inline-block; }
.login-brand p { font-size: 12.5px; color: var(--text-mute); margin-top: 6px; }
.login-error {
  background: #fef2f2; color: var(--danger);
  font-size: 13px; padding: 10px 12px; border-radius: 8px;
  margin-bottom: 14px; display: none;
}

/* ---------- Utility ---------- */
.flex { display: flex; align-items: center; }
.gap-8 { gap: 8px; } .gap-12 { gap: 12px; }
.text-mute { color: var(--text-mute); }
.mt-16 { margin-top: 16px; }
.loading-spin {
  width: 16px; height: 16px; border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.3); border-top-color: #fff;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Mobile ---------- */
.menu-toggle { display: none; }
@media (max-width: 860px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main { margin-left: 0; }
  .menu-toggle { display: flex; }
  .content { padding: 18px 16px 60px; }
  .topbar { padding: 14px 16px; }

  /* Ngăn Safari/iOS tự động zoom khi bấm vào ô nhập liệu có chữ nhỏ hơn 16px.
     Đây là nguyên nhân khiến các thành phần cố định (như giỏ hàng) bị trôi lệch khi gõ liệu. */
  input, select, textarea {
    font-size: 16px !important;
  }
}

/* ============================================================
   POS SCREEN — màn hình bán hàng toàn màn hình
   ============================================================ */
.pos-screen {
  position: fixed; inset: 0; background: var(--bg); z-index: 200;
  display: none; flex-direction: column;
}
.pos-screen.open { display: flex; }

.pos-topbar {
  padding: 12px 20px; border-bottom: 1px solid var(--border);
  display: flex; gap: 12px; align-items: center; background: #fff;
  flex-wrap: wrap; flex-shrink: 0;
}
.pos-topbar .type-toggle { width: 200px; margin-bottom: 0; }
.pos-customer-wrap { flex: 1; min-width: 220px; position: relative; }

.pos-body { flex: 1; display: flex; overflow: hidden; min-height: 0; }

.pos-products-pane { flex: 1; overflow-y: auto; padding: 16px 20px 100px; min-width: 0; }
.pos-toolbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.pos-search { flex: 1; min-width: 180px; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 10px;
}
.product-card {
  border: 1.5px solid var(--border); border-radius: 10px; padding: 12px;
  cursor: pointer; background: #fff; position: relative; transition: border-color .12s, transform .08s;
  -webkit-tap-highlight-color: transparent; user-select: none;
}
.product-card:hover { border-color: var(--teal); }
.product-card:active { transform: scale(0.97); }
.product-card.out-of-stock { opacity: 0.4; cursor: not-allowed; }
.product-card .pname { font-weight: 600; font-size: 13px; line-height: 1.3; margin-bottom: 6px; min-height: 34px; }
.product-card .pprice { color: var(--teal-deep); font-weight: 700; font-size: 14px; }
.product-card .pstock { font-size: 11px; color: var(--text-mute); margin-top: 3px; }
.product-card .cart-badge {
  position: absolute; top: -8px; right: -8px; background: var(--coral); color: #fff;
  border-radius: 50%; width: 24px; height: 24px; display: flex; align-items: center;
  justify-content: center; font-size: 12px; font-weight: 700; box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.pos-cart-pane {
  width: 380px; flex-shrink: 0; border-left: 1px solid var(--border); background: #fff;
  display: flex; flex-direction: column; overflow: hidden;
}
.pos-cart-header { padding: 16px 18px 10px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.pos-cart-header h3 { font-family: var(--font-display); font-size: 16px; }
.pos-cart-items { flex: 1; overflow-y: auto; padding: 8px 18px; }
.pos-cart-footer { padding: 14px 18px 18px; border-top: 1px solid var(--border); flex-shrink: 0; background: #fff; }

.cart-line { display: flex; align-items: center; gap: 8px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.cart-line:last-child { border-bottom: none; }
.cart-line .cl-info { flex: 1; min-width: 0; }
.cart-line .cl-name { font-size: 13px; font-weight: 600; }
.cart-line .cl-price { font-size: 12px; color: var(--text-mute); }
.cart-line .cl-stepper { display: flex; align-items: center; gap: 6px; }
.cl-stepper button {
  width: 24px; height: 24px; border-radius: 6px; border: 1px solid var(--border); background: #fff;
  cursor: pointer; font-weight: 700; color: var(--ink); line-height: 1;
}
.cl-stepper span { min-width: 20px; text-align: center; font-size: 13px; font-weight: 600; }
.cart-line .cl-remove { color: var(--danger); cursor: pointer; font-size: 16px; padding: 0 4px; }

.pos-cart-mobile-bar {
  display: none; position: fixed; bottom: 0; left: 0; right: 0; z-index: 210;
  background: var(--ink); color: #fff; padding: 10px 14px 12px; transition: background .2s;
  flex-direction: column; gap: 6px;
}
.pos-cart-mobile-bar.pulse { background: var(--teal-deep); }
.cmb-chips { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 2px; -webkit-overflow-scrolling: touch; }
.cmb-chips::-webkit-scrollbar { display: none; }
.cmb-chip {
  background: rgba(255,255,255,0.14); padding: 5px 10px; border-radius: 14px; font-size: 12px;
  white-space: nowrap; display: flex; align-items: center; gap: 6px; flex-shrink: 0;
}
.cmb-chip .cmb-chip-x { opacity: 0.7; font-weight: 700; }
.cmb-bottom-row { display: flex; justify-content: space-between; align-items: center; cursor: pointer; }
.pos-cart-mobile-bar .cmb-info { font-size: 13.5px; }
.pos-cart-mobile-bar .cmb-total { font-family: var(--font-display); font-weight: 700; font-size: 16px; }

@media (max-width: 860px) {
  .pos-topbar { padding: 10px 14px; }
  .pos-topbar .type-toggle { width: 140px; }
  .pos-products-pane { padding: 14px 14px 110px; }
  .product-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
  .pos-cart-pane {
    display: none; position: fixed; inset: auto 0 0 0; width: auto; height: 82vh;
    border-left: none; border-radius: 18px 18px 0 0; box-shadow: 0 -8px 30px rgba(0,0,0,0.2); z-index: 250;
  }
  .pos-cart-pane.open { display: flex; }
  .pos-cart-mobile-bar { display: flex; }
}