/* =====================================================================
   স্টক ম্যানেজার — ডিজাইন সিস্টেম
   রেফারেন্স অ্যাপ (স্টক ম্যানেজার) থেকে লাইভ মাপা টোকেন:
   প্রাইমারি টিল #0d9488 · কার্ড রেডিয়াস ১৮px · বাটন ৮px · সাইডবার ২৪০px
   ফন্ট: Hind Siliguri (বাংলা) + Inter
   ===================================================================== */

:root {
  --bg: #fbfdfc;
  --fg: #1f3336;
  --card: #ffffff;
  --primary: #0d9488;
  --primary-ink: #ffffff;
  --primary-soft: rgba(13, 148, 136, 0.10);
  --secondary: #e6f0ee;
  --muted: #eff5f4;
  --accent: #d7f0ea;
  --border: #dbe7e4;
  --sidebar: #f2f7f6;
  --muted-fg: #5f7573;
  --danger: #c0392f;
  --danger-soft: #fdeceb;
  --warn: #9a6b12;
  --warn-soft: #fdf5e3;
  --ok: #17795e;
  --ok-soft: #e8f6f0;
  --radius: 18px;
  --radius-btn: 8px;
  --shadow: 0 1px 2px rgba(31, 51, 54, .06), 0 8px 20px -12px rgba(31, 51, 54, .18);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1c1e; --fg: #f1f7f6; --card: #142329; --primary: #5cc9bd;
    --primary-ink: #08201d; --primary-soft: rgba(92, 201, 189, .14);
    --secondary: #1f3236; --muted: #1f3236; --accent: #243e41;
    --border: rgba(255, 255, 255, .12); --sidebar: #112126;
    --muted-fg: #9db3b1; --danger: #ef8b84; --danger-soft: rgba(239, 139, 132, .12);
    --warn: #e0b158; --warn-soft: rgba(224, 177, 88, .12);
    --ok: #7fd3b4; --ok-soft: rgba(127, 211, 180, .12);
    --shadow: 0 1px 2px rgba(0, 0, 0, .35), 0 10px 24px -16px rgba(0, 0, 0, .6);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--fg);
  font-family: "Hind Siliguri", Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px; line-height: 1.5; -webkit-text-size-adjust: 100%;
}
h1, h2, h3 { margin: 0; font-weight: 600; line-height: 1.3; }
a { color: var(--primary); text-decoration: none; }
.ic { width: 18px; height: 18px; flex: 0 0 auto; }
.muted { color: var(--muted-fg); font-size: 13px; }
.right { text-align: right; }
.nowrap { white-space: nowrap; }

/* ---------------------------------------------------------------- শেল */
.shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 240px; flex: 0 0 240px; background: var(--sidebar);
  border-right: 1px solid var(--border); padding: 18px 14px; display: none; flex-direction: column; gap: 18px;
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 6px; }
.brand-tile {
  width: 36px; height: 36px; border-radius: 10px; background: var(--primary); color: var(--primary-ink);
  display: grid; place-items: center;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.2; }
.brand-text strong { font-size: 15px; }
.brand-text small { color: var(--muted-fg); font-size: 12px; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: 8px;
  color: var(--fg); font-size: 14.5px;
}
.nav-item:hover { background: var(--muted); }
.nav-item.active { background: var(--primary-soft); color: var(--primary); font-weight: 600; }
.sidebar-foot { margin-top: auto; padding: 10px 12px; border-top: 1px solid var(--border); font-size: 13px; }
.sidebar-foot strong { display: block; }

.main { flex: 1 1 auto; min-width: 0; display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 14px 18px; border-bottom: 1px solid var(--border); background: var(--card);
}
.topbar-title h1 { font-size: 19px; }
.topbar-title p { margin: 2px 0 0; color: var(--muted-fg); font-size: 13px; }
.topbar-side { display: flex; align-items: center; gap: 10px; }
.user-chip {
  display: none; flex-direction: column; align-items: flex-end; line-height: 1.15;
  padding: 4px 10px; background: var(--muted); border-radius: 999px; font-size: 13px;
}
.user-chip small { color: var(--muted-fg); font-size: 11px; }
.content { padding: 18px; display: flex; flex-direction: column; gap: 16px; }

/* ---------------------------------------------------------------- কার্ড */
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; overflow: hidden;
}
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.card-head h2 { font-size: 16px; }
.card-head p { margin: 2px 0 0; color: var(--muted-fg); font-size: 13px; }
.card-tools { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grid { display: grid; gap: 14px; align-items: start; }
.grid.k2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.k3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.k4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* ---------------------------------------------------------------- KPI */
.kpi {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px 16px; display: flex; flex-direction: column; gap: 4px;
}
.kpi-label { color: var(--muted-fg); font-size: 13px; }
.kpi-value { font-size: 22px; font-weight: 700; letter-spacing: -.2px; }
.kpi-sub { color: var(--muted-fg); font-size: 12px; }
.kpi.ok .kpi-value { color: var(--ok); }
.kpi.danger .kpi-value { color: var(--danger); }

/* ---------------------------------------------------------------- বাটন */
.btn {
  display: inline-flex; align-items: center; gap: 7px; padding: 9px 14px; border-radius: var(--radius-btn);
  border: 1px solid var(--primary); background: var(--primary); color: var(--primary-ink);
  font: inherit; font-size: 14px; font-weight: 500; cursor: pointer; white-space: nowrap;
}
.btn:hover { filter: brightness(1.05); }
.btn.ghost { background: transparent; color: var(--fg); border-color: var(--border); }
.btn.ghost:hover { background: var(--muted); }
.btn.sm { padding: 6px 10px; font-size: 13px; }
.btn.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.btn.icon-only { padding: 7px; }
.btn:disabled { opacity: .55; cursor: not-allowed; }

/* ---------------------------------------------------------------- ফর্ম */
label.field { display: flex; flex-direction: column; gap: 5px; font-size: 13.5px; }
label.field > span { color: var(--muted-fg); }
input, select, textarea {
  font: inherit; font-size: 15px; padding: 9px 11px; border-radius: var(--radius-btn);
  border: 1px solid var(--border); background: var(--card); color: var(--fg); width: 100%;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary-soft); border-color: var(--primary); }
.form-grid { display: grid; gap: 12px; grid-template-columns: 1fr; }
.form-actions { display: flex; gap: 10px; margin-top: 6px; }
.inline-form { display: flex; gap: 8px; align-items: end; flex-wrap: wrap; }
.search-wrap { position: relative; display: flex; align-items: center; }
.search-wrap .ic { position: absolute; left: 10px; color: var(--muted-fg); }
.search-wrap input { padding-left: 34px; }

/* ---------------------------------------------------------------- টেবিল */
.tablewrap { overflow-x: auto; margin: 0 -16px -16px; padding: 0 0 4px; }
/* কার্ডের শেষে না থাকলে (মাঝখানে কোনো টেবিল) নেগেটিভ মার্জিন বন্ধ */
.tablewrap.inset { margin: 0; padding-bottom: 0; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted-fg); font-weight: 500; font-size: 13px; background: var(--muted); }
tbody tr:hover { background: var(--muted); }
tbody tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; }
.empty { padding: 22px 14px; text-align: center; color: var(--muted-fg); }

/* ---------------------------------------------------------------- ব্যাজ/অ্যালার্ট */
.badge {
  display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px;
  background: var(--muted); color: var(--muted-fg); border: 1px solid var(--border);
}
.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: var(--ok); }
.badge.danger { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: var(--warn); }
.alert {
  display: flex; gap: 9px; align-items: center; padding: 11px 14px; border-radius: var(--radius-btn);
  font-size: 14px; border: 1px solid var(--border); background: var(--muted);
}
.alert.ok { background: var(--ok-soft); color: var(--ok); border-color: var(--ok); }
.alert.danger { background: var(--danger-soft); color: var(--danger); border-color: var(--danger); }
.alert.warn { background: var(--warn-soft); color: var(--warn); border-color: var(--warn); }

/* ---------------------------------------------------------------- POS */
.pos { display: grid; gap: 14px; grid-template-columns: 1fr; }
.pos-products { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.pcard {
  border: 1px solid var(--border); border-radius: 14px; padding: 11px 12px; background: var(--card);
  cursor: pointer; display: flex; flex-direction: column; gap: 3px; text-align: left;
}
.pcard:hover { border-color: var(--primary); background: var(--primary-soft); }
.pcard strong { font-size: 14.5px; }
.pcard .price { color: var(--primary); font-weight: 600; }
.pcard .stock { font-size: 12px; color: var(--muted-fg); }
.cart-line { border: 1px solid var(--border); border-radius: 14px; padding: 10px 12px; display: flex; flex-direction: column; gap: 8px; }
.cart-line .row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.cart-line .row.grow { justify-content: space-between; }
.cart-line input[type="number"] { width: 74px; padding: 6px 8px; font-size: 14px; }
.totals { display: flex; flex-direction: column; gap: 6px; font-size: 14.5px; }
.totals .line { display: flex; justify-content: space-between; }
.totals .grand { font-size: 19px; font-weight: 700; border-top: 1px solid var(--border); padding-top: 8px; }
.totals .line.neg span:last-child { color: var(--danger); }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: var(--radius-btn); overflow: hidden; }
.seg button { background: transparent; border: 0; padding: 8px 14px; font: inherit; font-size: 14px; cursor: pointer; color: var(--fg); }
.seg button.on { background: var(--primary); color: var(--primary-ink); }

/* ---------------------------------------------------------------- রিসিট */
.receipt { max-width: 420px; margin: 0 auto; background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.receipt h3 { text-align: center; font-size: 17px; }
.receipt .center { text-align: center; }
.receipt table { font-size: 13.5px; }
.receipt table th, .receipt table td { padding: 6px 4px; background: transparent; }
.receipt hr { border: 0; border-top: 1px dashed var(--border); margin: 10px 0; }
.receipt .foot { text-align: center; color: var(--muted-fg); font-size: 12.5px; margin-top: 10px; }

/* ---------------------------------------------------------------- মোবাইল নেভ */
.bottomnav {
  position: sticky; bottom: 0; display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--card); border-top: 1px solid var(--border);
}
.bottomnav a { display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 8px 2px; font-size: 11px; color: var(--muted-fg); }
.bottomnav a.active { color: var(--primary); }

/* ---------------------------------------------------------------- প্রিন্ট */
@media print {
  .sidebar, .topbar-side, .bottomnav, .no-print { display: none !important; }
  body { background: #fff; }
  .card, .receipt { border: 0; box-shadow: none; padding: 0; }
}

/* ---------------------------------------------------------------- ডেস্কটপ */
@media (min-width: 900px) {
  .sidebar { display: flex; }
  .bottomnav { display: none; }
  .content { padding: 22px 24px; }
  .user-chip { display: flex; }
  .grid.k3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid.k4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .form-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pos { grid-template-columns: minmax(0, 1.55fr) minmax(320px, 1fr); align-items: start; }
}

/* ---------------------------------------------------------------- লগইন */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 390px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px; }
.login-card h1 { font-size: 21px; }
.login-card .sub { color: var(--muted-fg); font-size: 13.5px; margin: 4px 0 18px; }
.login-card .brand { justify-content: center; margin-bottom: 14px; }

/* মোবাইলে হিসাবের লাইনে টাকার অঙ্ক ডানে স্থির থাকবে */
.totals .line { gap: 10px; }
.totals .line > strong,
.totals .line > span:last-child { white-space: nowrap; text-align: right; }
.totals .line > span:first-child { min-width: 0; }
@media (max-width: 899px) {
  .totals .line { font-size: 14px; }
  .totals .line > span:first-child { flex: 1 1 auto; }
}

/* রিপোর্টের সারসংক্ষেপের শেষ লাইন (যেমন নিট লাভ) */
.total-row td { font-weight: 700; background: var(--muted); border-top: 2px solid var(--border); }