/* ============================================================
   AlBarkah Traders — mobile-first stylesheet
   Colors from the owner's business card:
   sky-blue gradient header, greens, dark green, red + dark blue.
   ============================================================ */
:root {
  --sky1: #6db9f0;
  --sky2: #bfe3fb;
  --green: #57b25e;
  --green-dark: #1e7a34;
  --green-deep: #145c26;
  --red: #d63c3c;
  --blue-dark: #1e3a8a;
  --ink: #1d2b26;
  --muted: #5f6f66;
  --bg: #eef5f0;
  --card: #ffffff;
  --line: #dfe9e2;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(20, 60, 40, .08);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.45;
}

/* ---------- Top bar ---------- */
.topbar {
  background: linear-gradient(135deg, var(--sky1) 0%, #9fd8f5 40%, #a9e39b 100%);
  color: #0b3d91;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  max-width: 1100px;
  margin: 0 auto;
}
.brand {
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--blue-dark);
  text-decoration: none;
  letter-spacing: .2px;
}
.topbar-right { display: flex; align-items: center; gap: 8px; }
.who { font-size: .82rem; color: #0b3d91; }
.who em { font-style: normal; opacity: .75; }

.mainnav {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 0 10px 10px;
  max-width: 1100px;
  margin: 0 auto;
  -webkit-overflow-scrolling: touch;
}
.mainnav a {
  flex: 0 0 auto;
  text-decoration: none;
  color: #0b3d91;
  background: rgba(255,255,255,.55);
  border: 1px solid rgba(255,255,255,.7);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
}
.mainnav a.active {
  background: var(--green-dark);
  border-color: var(--green-dark);
  color: #fff;
}

/* ---------- Layout ---------- */
.container { max-width: 1100px; margin: 0 auto; padding: 14px 12px 40px; }
.container-narrow { max-width: 460px; }
.page-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 4px 0 14px;
  flex-wrap: wrap;
}
.page-title h1 { font-size: 1.35rem; margin: 0; color: var(--blue-dark); }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  margin-bottom: 14px;
}
.card h2, .card h3 { margin: 0 0 10px; color: var(--blue-dark); font-size: 1.05rem; }

.grid { display: grid; gap: 12px; }
.grid-2 { grid-template-columns: 1fr; }
.grid-3 { grid-template-columns: 1fr; }
.grid-4 { grid-template-columns: 1fr 1fr; }
@media (min-width: 700px) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: 1fr 1fr 1fr; }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

.stat { text-align: center; padding: 12px 8px; }
.stat .num { font-size: 1.4rem; font-weight: 800; color: var(--green-deep); }
.stat .lbl { font-size: .8rem; color: var(--muted); margin-top: 2px; }
.stat.warn .num { color: var(--red); }
.stat.info .num { color: var(--blue-dark); }

/* ---------- Forms ---------- */
label { display: block; font-weight: 600; font-size: .86rem; margin: 10px 0 4px; color: #33463d; }
input[type=text], input[type=number], input[type=date], input[type=password],
select, textarea {
  width: 100%;
  padding: 11px 12px;
  font-size: 1rem;
  border: 1.5px solid var(--line);
  border-radius: 10px;
  background: #fbfdfc;
  color: var(--ink);
}
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(87,178,94,.18);
}
textarea { min-height: 70px; resize: vertical; }
.row { display: flex; gap: 10px; }
.row > * { flex: 1; min-width: 0; }
.hint { font-size: .78rem; color: var(--muted); margin-top: 3px; }
.err { color: var(--red); font-size: .85rem; margin: 4px 0; }

.btn {
  display: inline-block;
  border: none;
  border-radius: 10px;
  padding: 12px 18px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  min-height: 44px;
}
.btn-primary { background: var(--green-dark); color: #fff; }
.btn-primary:hover { background: var(--green-deep); }
.btn-secondary { background: #e8f0ea; color: var(--green-deep); }
.btn-danger { background: var(--red); color: #fff; }
.btn-outline { background: transparent; border: 1.5px solid var(--blue-dark); color: var(--blue-dark); padding: 8px 12px; min-height: 0; font-size: .85rem; }
.btn-sm { padding: 7px 12px; font-size: .85rem; min-height: 0; }
.btn-block { display: block; width: 100%; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }

.tabs { display: flex; background: #e4efe6; border-radius: 12px; padding: 4px; margin: 8px 0; }
.tabs button {
  flex: 1;
  border: none;
  background: transparent;
  padding: 10px;
  font-size: .95rem;
  font-weight: 700;
  border-radius: 9px;
  cursor: pointer;
  color: var(--muted);
}
.tabs button.active { background: #fff; color: var(--blue-dark); box-shadow: var(--shadow); }

/* ---------- Tables ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 -14px; padding: 0 14px; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { padding: 9px 8px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--blue-dark); font-size: .78rem; text-transform: uppercase; letter-spacing: .4px; }
tr.low { background: #fff4f4; }
.num-r { text-align: right; font-variant-numeric: tabular-nums; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }
.link { color: var(--blue-dark); font-weight: 600; text-decoration: none; }
.link.danger { color: var(--red); }

.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 700;
}
.badge.ok { background: #e3f4e5; color: var(--green-deep); }
.badge.warn { background: #fdeaea; color: var(--red); }
.badge.info { background: #e3e9fb; color: var(--blue-dark); }
.badge.mut { background: #eef1ee; color: var(--muted); }

.alert { padding: 12px 14px; border-radius: 10px; margin-bottom: 12px; font-size: .92rem; }
.alert.ok { background: #e3f4e5; color: var(--green-deep); border: 1px solid #bfe3c4; }
.alert.err { background: #fdeaea; color: #a52a2a; border: 1px solid #f3c1c1; }

.empty { text-align: center; padding: 28px 12px; color: var(--muted); }
.empty p { margin: 0 0 12px; }

/* ---------- Sale cart lines ---------- */
.line-card {
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 12px;
  background: #fbfdfc;
  position: relative;
}
.line-card h4 { margin: 0 0 6px; color: var(--blue-dark); font-size: 1rem; }
.line-remove {
  position: absolute;
  top: 8px;
  right: 8px;
  border: none;
  background: #fdeaea;
  color: var(--red);
  font-weight: 800;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
}
.size-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  align-items: end;
  padding: 8px 0;
  border-top: 1px dashed var(--line);
}
.size-row:first-of-type { border-top: none; }
.size-row label { margin: 0 0 3px; font-size: .78rem; }

.totals { background: #f4f9f5; border-radius: 10px; padding: 12px; margin-top: 10px; }
.totals .trow { display: flex; justify-content: space-between; padding: 3px 0; font-size: .95rem; }
.totals .trow.grand { font-weight: 800; font-size: 1.15rem; color: var(--green-deep); border-top: 2px solid var(--line); margin-top: 6px; padding-top: 8px; }
.totals .trow .neg { color: var(--red); }

/* ---------- Product rows (1 per row) ---------- */
.product-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1.5px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  margin-bottom: 10px;
  background: #fff;
}
.product-row .pinfo b { color: var(--blue-dark); font-size: 1rem; display: block; }
.product-row .pinfo span { font-size: .82rem; color: var(--muted); display: block; margin-top: 2px; }
.product-row .pstock { text-align: right; font-size: .9rem; }
.product-row .pstock b { color: var(--green-deep); }

/* ---------- Receipt preview ---------- */
.receipt-box {
  max-width: 340px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px;
  font-family: "Courier New", monospace;
}

/* ---------- Footer ---------- */
.footer {
  text-align: center;
  color: var(--muted);
  font-size: .8rem;
  padding: 18px 10px 30px;
}

/* ---------- Login ---------- */
.login-card { margin-top: 8vh; }
.login-card h1 { color: var(--blue-dark); text-align: center; }

/* ---------- Charts ---------- */
.chart-wrap { width: 100%; overflow-x: auto; }
.chart-wrap svg { min-width: 520px; width: 100%; height: auto; display: block; }

.kv { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px dashed var(--line); font-size: .93rem; }
.kv:last-child { border-bottom: none; }
.kv b { font-variant-numeric: tabular-nums; }

@media (min-width: 700px) {
  body { font-size: 15px; }
  .container { padding: 20px 16px 60px; }
}