* { box-sizing: border-box; }

:root {
  --bg: #f2f6fb;
  --card: #ffffff;
  --border: #e3e8ef;
  --text: #1f2937;
  --muted: #6b7280;
  --primary: #0f8b68;
  --primary-2: #12a07a;
  --primary-ink: #065f46;
  --primary-soft: #e6f6f0;
  --accent: #f59e0b;
  --accent-soft: #fef3c7;
  --danger: #dc2626;
  --danger-soft: #fee2e2;
  --info: #2563eb;
  --info-soft: #dbeafe;
  --green: #16a34a;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(15, 23, 42, 0.08), 0 4px 14px rgba(15, 23, 42, 0.05);
}

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans Thai", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  padding-bottom: 64px;
}

/* ---------- Navbar ---------- */
.navbar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 50;
  display: flex;
  background: var(--card);
  border-top: 1px solid var(--border);
  box-shadow: 0 -2px 10px rgba(15, 23, 42, 0.06);
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 9px 4px 7px;
  color: var(--muted);
  text-decoration: none;
  font-size: 11px;
  font-weight: 600;
  border: none;
  background: none;
  cursor: pointer;
  border-top: 3px solid transparent;
}

.nav-item svg { width: 22px; height: 22px; }

.nav-item.active {
  color: var(--primary);
  border-top-color: var(--primary);
}

.navbar-inner {
  display: flex;
  width: 100%;
  align-items: center;
}

.nav-brand { display: none; }

/* ---------- Layout ---------- */
.main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 16px 14px 24px;
}

.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin: 6px 0 16px;
}

.page-title { margin: 0; font-size: 22px; }

.page-sub { margin: 2px 0 0; color: var(--muted); font-size: 13px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}

.card-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.card-header h2 { margin: 0; font-size: 16px; }

.card-body { padding: 16px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border: 1px solid transparent;
  border-radius: 10px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  background: transparent;
  transition: filter 0.15s ease, transform 0.05s ease;
  white-space: nowrap;
}

.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-2); }

.btn-outline {
  border-color: var(--border);
  background: var(--card);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }

.btn-danger-soft { background: var(--danger-soft); color: var(--danger); }
.btn-danger-soft:hover { background: #fecaca; }

.btn-ghost { color: var(--muted); }
.btn-ghost:hover { color: var(--danger); background: var(--danger-soft); }

.btn-primary-soft { background: var(--primary-soft); color: var(--primary-ink); }
.btn-primary-soft:hover { background: #d0f0e4; }

.btn-sm { padding: 6px 10px; font-size: 13px; border-radius: 8px; }
.btn-block { width: 100%; }

/* ---------- Forms ---------- */
.field { margin-bottom: 12px; }

.field label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: #374151;
  margin-bottom: 5px;
}

.field .hint { font-weight: 400; color: var(--muted); font-size: 12px; }

input[type="text"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font: inherit;
  font-size: 15px;
  background: var(--card);
  color: var(--text);
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--primary-2);
  outline-offset: 1px;
  border-color: transparent;
}

textarea { resize: vertical; min-height: 60px; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 12px;
}

.form-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 6px;
  flex-wrap: wrap;
}

/* ---------- Tables ---------- */
.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 640px;
}

table.table th,
table.table td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table.table th {
  background: #f8fafc;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  color: var(--muted);
}

table.table tbody tr:hover { background: #f9fbfd; }

table.table tr.row-low { background: var(--danger-soft); }
table.table tr.row-low:hover { background: #fdd7d7; }

.num { text-align: right; font-variant-numeric: tabular-nums; }

.text-muted { color: var(--muted); }
.text-danger { color: var(--danger); font-weight: 700; }
.price { font-variant-numeric: tabular-nums; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  white-space: nowrap;
}

.badge-ok { background: var(--primary-soft); color: var(--primary-ink); }
.badge-low { background: var(--danger-soft); color: var(--danger); }
.badge-in { background: var(--primary-soft); color: var(--primary-ink); }
.badge-out { background: var(--accent-soft); color: #b45309; }

/* ---------- Toolbar ---------- */
.toolbar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.search {
  position: relative;
  flex: 1 1 180px;
  min-width: 160px;
}

.search svg {
  position: absolute;
  left: 11px;
  top: 50%;
  transform: translateY(-50%);
  width: 17px;
  height: 17px;
  color: var(--muted);
}

.search input { padding-left: 36px; }

.toolbar .field-select { flex: 0 1 160px; min-width: 130px; }

/* ---------- Summary cards ---------- */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.summary-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}

.summary-card .sc-label { font-size: 12px; color: var(--muted); font-weight: 600; }
.summary-card .sc-value { font-size: 22px; font-weight: 800; margin-top: 2px; font-variant-numeric: tabular-nums; }
.summary-card.is-alert { border-color: #fecaca; background: #fff7f7; }
.summary-card.is-alert .sc-value { color: var(--danger); }

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  display: none;
  align-items: flex-end;
  justify-content: center;
  z-index: 100;
  padding: 0;
}

.modal-backdrop.open { display: flex; }

.modal {
  background: var(--card);
  width: 100%;
  max-height: 92vh;
  overflow-y: auto;
  border-radius: 18px 18px 0 0;
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.18);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 0;
}

.modal-header h3 { margin: 0; font-size: 17px; }

.modal-body { padding: 14px 18px 18px; }

/* ---------- Toast ---------- */
.toast-container {
  position: fixed;
  left: 50%;
  bottom: 76px;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(92vw, 420px);
  pointer-events: none;
}

.toast {
  background: #111827;
  color: #fff;
  padding: 11px 16px;
  border-radius: 10px;
  font-size: 14px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s;
}

.toast.show { opacity: 1; transform: translateY(0); }
.toast.toast-success { background: #065f46; }
.toast.toast-error { background: #b91c1c; }
.toast.toast-warn { background: #92400e; }

/* ---------- Misc ---------- */
.empty {
  text-align: center;
  color: var(--muted);
  padding: 34px 16px;
}

.empty svg { width: 44px; height: 44px; color: #cbd5e1; margin-bottom: 8px; }

.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 3px solid rgba(255,255,255,.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: -3px;
}

@keyframes spin { to { transform: rotate(360deg); } }

.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.gapline { margin-top: 12px; }

.flex-between { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.flex-col { display: flex; flex-direction: column; gap: 8px; }

.total-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 2px;
  font-weight: 800;
  font-size: 16px;
}

.list-head {
  font-size: 13px;
  font-weight: 700;
  color: #374151;
  margin: 0 0 8px;
}

/* ---------- Desktop (>=769px) ---------- */
@media (min-width: 769px) {
  body { padding-bottom: 0; }

  .navbar {
    position: sticky;
    top: 0;
    bottom: auto;
    border-top: none;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  .navbar-inner {
    max-width: 1080px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 14px;
  }

  .nav-item {
    flex: 0 1 auto;
    flex-direction: row;
    gap: 7px;
    padding: 14px 16px;
    font-size: 14px;
    border-top: none;
    border-bottom: 3px solid transparent;
  }

  .nav-item svg { width: 19px; height: 19px; }

  .nav-item.active {
    border-top: none;
    border-bottom-color: var(--primary);
  }

  .nav-brand {
    display: block;
    font-weight: 800;
    font-size: 16px;
    color: var(--primary-ink);
    padding: 14px 16px 14px 2px;
    white-space: nowrap;
  }

  .main { padding: 24px 20px 40px; }
  .page-title { font-size: 26px; }

  .brand-mobile { display: none; }

  .summary-cards { grid-template-columns: repeat(3, 1fr); }

  .form-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-backdrop { align-items: center; padding: 20px; }
  .modal { max-width: 520px; border-radius: 18px; }

  .toast-container { bottom: 32px; }

  .twocol {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .summary-cards { grid-template-columns: repeat(5, 1fr); }
}

/* ---------- Mobile tweaks ---------- */
@media (max-width: 468px) {
  .btn { font-size: 13px; padding: 9px 12px; }
  .card-body { padding: 12px; }
}

/* nav brand on mobile */
.brand-mobile {
  font-weight: 800;
  color: var(--primary-ink);
  padding: 12px 4px 8px;
  font-size: 18px;
  text-decoration: none;
}