/* ============================================================
   StockTech UI — "3D elements" redesign
   Design system: Dimensional Layering (depth/elevation/parallax)
   Palette: Industrial slate + stock green (Inventory & Stock Mgmt)
   Fonts:   Prompt (headings) + Sarabun (body) — Thai-native
   ============================================================ */

:root {
  /* Palette — inventory & stock management */
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;

  --primary: #334155;
  --primary-dark: #1e293b;
  --primary-light: #e2e8f0;

  --accent: #059669;
  --accent-dark: #047857;
  --success: #059669;
  --danger: #dc2626;
  --danger-dark: #b91c1c;
  --warning: #d97706;
  --info: #2563eb;

  --bg: #eef2f7;
  --card: #ffffff;
  --text: #0f172a;
  --text-light: #64748b;
  --border: #e6e8ea;

  /* Dimensional layering — 4-level elevation */
  --e1: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.1);
  --e2: 0 2px 4px rgba(15, 23, 42, 0.05), 0 6px 12px rgba(15, 23, 42, 0.08);
  --e3: 0 4px 8px rgba(15, 23, 42, 0.06), 0 12px 24px rgba(15, 23, 42, 0.11);
  --e4: 0 8px 16px rgba(15, 23, 42, 0.09), 0 24px 48px rgba(15, 23, 42, 0.17);

  /* Radius scale (chunky rounded 3D) */
  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 18px;
  --r-xl: 22px;

  --font-heading: 'Prompt', 'Segoe UI', 'Noto Sans Thai', sans-serif;
  --font-body: 'Sarabun', 'Segoe UI', 'Tahoma', 'Noto Sans Thai', 'Leelawadee UI', sans-serif;

  --t-fast: 0.15s ease;
  --t-med: 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  background-image:
    radial-gradient(circle at 12% -5%, rgba(51, 65, 85, 0.08), transparent 42%),
    radial-gradient(circle at 92% 4%, rgba(5, 150, 105, 0.07), transparent 40%),
    radial-gradient(circle at 50% 110%, rgba(37, 99, 235, 0.05), transparent 50%);
  background-attachment: fixed;
  color: var(--text);
  min-height: 100vh;
}

/* ---------- Top navigation (layered depth) ---------- */
.topbar {
  background: linear-gradient(180deg, var(--slate-900), var(--slate-800) 55%, var(--slate-700));
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 4px 0 rgba(15, 23, 42, 0.18), 0 12px 28px rgba(15, 23, 42, 0.35);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  white-space: nowrap;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.brand .ico {
  font-size: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.08));
  border: 1px solid rgba(255, 255, 255, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 4px 0 rgba(0, 0, 0, 0.25), 0 6px 12px rgba(0, 0, 0, 0.35);
}

.nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.nav a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  padding: 9px 13px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background var(--t-fast), transform var(--t-fast), box-shadow var(--t-fast);
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-1px);
}

.nav a.active {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 -2px 0 rgba(255, 255, 255, 0.25), 0 4px 10px rgba(0, 0, 0, 0.25);
  font-weight: 700;
}

/* ---------- Layout ---------- */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 20px 16px 32px;
}

.page-title {
  font-family: var(--font-heading);
  font-size: 22px;
  font-weight: 700;
  margin: 6px 0 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--slate-900);
}

/* ---------- Cards (floating 3D plates) ---------- */
.card {
  background: var(--card);
  border-radius: var(--r-lg);
  box-shadow: var(--e2);
  padding: 18px;
  margin-bottom: 18px;
  border: 1px solid rgba(203, 213, 225, 0.6);
  border-top: 1px solid rgba(255, 255, 255, 0.9);
  position: relative;
  transition: transform var(--t-med), box-shadow var(--t-med);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--e3);
}

.card-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 14px;
  color: var(--slate-800);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

@media (max-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

/* ---------- Form ---------- */
.form-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
  flex: 1;
  min-width: 150px;
}

.form-group label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-light);
}

input[type='text'],
input[type='number'],
input[type='date'],
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--slate-300);
  border-radius: var(--r-md);
  font-size: 14px;
  font-family: inherit;
  background: #fff;
  color: var(--text);
  outline: none;
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.04);
  transition: border var(--t-fast), box-shadow var(--t-fast), transform var(--t-fast);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.04), 0 0 0 3px rgba(51, 65, 85, 0.16);
}

input:disabled,
select:disabled,
textarea:disabled {
  background: var(--slate-100);
  color: var(--slate-500);
  cursor: not-allowed;
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.05);
}

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

/* ---------- Buttons (chunky 3D press) ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border: none;
  border-radius: var(--r-md);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-heading);
  cursor: pointer;
  text-decoration: none;
  color: #fff;
  position: relative;
  box-shadow: 0 4px 0 var(--btn-depth, rgba(15, 23, 42, 0.4)), 0 6px 14px rgba(15, 23, 42, 0.2);
  transition: transform 0.08s ease, box-shadow 0.08s ease, filter var(--t-fast);
}

.btn:hover {
  filter: brightness(1.07);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 var(--btn-depth, rgba(15, 23, 42, 0.4)), 0 2px 6px rgba(15, 23, 42, 0.18);
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 4px 0 rgba(15, 23, 42, 0.25);
  filter: grayscale(0.2);
}

.btn-primary {
  background: linear-gradient(180deg, #3f506e, var(--primary));
  --btn-depth: #1e293b;
}

.btn-success {
  background: linear-gradient(180deg, #0baa77, var(--success));
  --btn-depth: #047857;
}

.btn-danger {
  background: linear-gradient(180deg, #ef4444, var(--danger));
  --btn-depth: var(--danger-dark);
}

.btn-warning {
  background: linear-gradient(180deg, #f59e0b, var(--warning));
  --btn-depth: #b45309;
}

.btn-outline {
  background: #fff;
  color: var(--slate-800);
  border: 1px solid var(--slate-300);
  --btn-depth: var(--slate-300);
  box-shadow: 0 4px 0 var(--slate-300), 0 5px 12px rgba(15, 23, 42, 0.12);
}

.btn-outline:hover {
  background: var(--slate-50);
}

.btn-outline:active {
  box-shadow: 0 1px 0 var(--slate-300), 0 2px 6px rgba(15, 23, 42, 0.12);
}

.btn-sm {
  padding: 6px 11px;
  font-size: 13px;
  border-radius: var(--r-sm);
  box-shadow: 0 3px 0 var(--btn-depth, rgba(15, 23, 42, 0.4)), 0 4px 8px rgba(15, 23, 42, 0.16);
}

.btn-sm:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--btn-depth, rgba(15, 23, 42, 0.4)), 0 2px 4px rgba(15, 23, 42, 0.12);
}

.btn-lg {
  padding: 13px 22px;
  font-size: 15px;
  width: 100%;
}

/* ---------- Table ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: inset 0 1px 3px rgba(15, 23, 42, 0.03);
}

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

th,
td {
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid #eef2f7;
  white-space: nowrap;
}

th {
  background: linear-gradient(180deg, var(--slate-100), #e7ecf3);
  font-size: 13px;
  color: var(--slate-600);
  font-weight: 700;
  position: sticky;
  top: 0;
  z-index: 1;
  box-shadow: inset 0 1px 0 #fff, 0 1px 0 rgba(15, 23, 42, 0.06);
}

tbody tr {
  transition: background var(--t-fast);
}

tbody tr:hover {
  background: var(--slate-50);
}

tbody tr:last-child td {
  border-bottom: none;
}

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

.center {
  text-align: center;
}

/* ---------- Badges (3D pills) ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.5;
  border: 1px solid transparent;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.5), 0 2px 4px rgba(15, 23, 42, 0.08);
}

.badge-in {
  background: #dcfce7;
  color: var(--success);
  border-color: #a7f3d0;
}

.badge-out {
  background: #fee2e2;
  color: var(--danger);
  border-color: #fecaca;
}

.badge-low {
  background: #fef3c7;
  color: var(--warning);
  border-color: #fde68a;
}

.badge-ok {
  background: var(--slate-100);
  color: var(--slate-700);
  border-color: var(--slate-200);
}

/* ---------- Alerts / toast ---------- */
.alert {
  padding: 11px 15px;
  border-radius: var(--r-md);
  font-size: 14px;
  margin-bottom: 12px;
  display: none;
  box-shadow: var(--e1);
}

.alert.show {
  display: block;
}

.alert-error {
  background: #fef2f2;
  color: var(--danger);
  border: 1px solid #fecaca;
  border-left: 4px solid var(--danger);
}

.alert-success {
  background: #f0fdf4;
  color: var(--success);
  border: 1px solid #bbf7d0;
  border-left: 4px solid var(--success);
}

.alert-info {
  background: #eff6ff;
  color: var(--info);
  border: 1px solid #bfdbfe;
  border-left: 4px solid var(--info);
}

/* Floating bottom toast (receive / issue pages) */
#toast {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 300;
  border-radius: 999px;
  padding: 11px 22px;
  max-width: 92vw;
  box-shadow: var(--e4);
  animation: toastIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes toastIn {
  from { opacity: 0; transform: translate(-50%, 14px) scale(0.96); }
  to { opacity: 1; transform: translate(-50%, 0) scale(1); }
}

/* ---------- Search ---------- */
.search-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 14px;
}

.search-bar input {
  flex: 1;
}

/* ---------- Modal ---------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(5px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 16px;
}

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

.modal-backdrop.show .modal {
  animation: modalIn 0.28s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: translateY(18px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.modal {
  background: linear-gradient(180deg, #ffffff, #fbfcfe);
  border-radius: var(--r-xl);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 22px;
  box-shadow: var(--e4);
  border: 1px solid rgba(203, 213, 225, 0.7);
  border-top: 1px solid #fff;
}

.modal-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 17px;
  margin-bottom: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--slate-900);
}

.modal-close {
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text-light);
  line-height: 1;
  border-radius: 8px;
  width: 34px;
  height: 34px;
  transition: background var(--t-fast);
}

.modal-close:hover {
  background: var(--slate-100);
  color: var(--slate-900);
}

.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 18px;
}

/* ---------- Empty state ---------- */
.empty {
  text-align: center;
  padding: 32px;
  color: var(--text-light);
  font-size: 14px;
}

/* ---------- Print styles (เฉพาะส่วนรายงาน) ---------- */
.print-section {
  display: none;
}

@media print {
  body {
    background: #fff;
  }

  .no-print {
    display: none !important;
  }

  .print-section {
    display: block;
  }

  .print-section table th,
  .print-section table td {
    white-space: normal;
  }
}

/* ---------- Utilities ---------- */
.muted {
  color: var(--text-light);
  font-size: 13px;
}

.mt-12 {
  margin-top: 12px;
}

.mb-12 {
  margin-bottom: 12px;
}

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

.total-row {
  font-weight: 700;
  background: var(--slate-100);
}

.total-row td {
  border-top: 2px solid var(--slate-300);
}

.stock-num {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ---------- Item picker rows ---------- */
.item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 11px 14px;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  margin-bottom: 9px;
  background: #fff;
  cursor: pointer;
  box-shadow: var(--e1);
  transition: transform var(--t-fast), box-shadow var(--t-fast), border-color var(--t-fast), background var(--t-fast);
}

.item-row:hover {
  transform: translateY(-1px);
  box-shadow: var(--e2);
  border-color: var(--slate-300);
}

.item-row.selected {
  border-color: var(--primary);
  background: linear-gradient(180deg, #eef2f7, #e2e8f0);
  box-shadow: inset 0 2px 4px rgba(15, 23, 42, 0.08), 0 2px 8px rgba(51, 65, 85, 0.2);
}

.item-row .item-name {
  font-weight: 600;
}

.item-row .item-meta {
  font-size: 12px;
  color: var(--text-light);
}

.item-row .item-qty {
  font-weight: 700;
  font-size: 15px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--slate-800);
}

.item-picker {
  max-height: 320px;
  overflow-y: auto;
  padding: 2px;
}

.selected-card {
  border: 1px dashed var(--slate-300);
  border-radius: var(--r-md);
  padding: 12px 14px;
  margin-bottom: 14px;
  background: var(--slate-50);
  box-shadow: inset 0 2px 6px rgba(15, 23, 42, 0.05);
}

.selected-card .selected-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.list-footer {
  padding-top: 4px;
}

/* ---------- Low-stock list rows ---------- */
.low-item-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 14px;
  border: 1px solid #fde68a;
  border-radius: var(--r-md);
  margin-bottom: 9px;
  background: linear-gradient(180deg, #fffbeb, #fef9ec);
  box-shadow: var(--e1);
  transition: transform var(--t-fast), box-shadow var(--t-fast);
}

.low-item-row:hover {
  transform: translateY(-1px);
  box-shadow: var(--e2);
}

.low-item-row .info {
  flex: 1;
}

.low-item-row .info b {
  font-size: 14px;
}

.low-item-row .meta {
  font-size: 12px;
  color: var(--text-light);
  margin-top: 2px;
}

.view-btn {
  white-space: nowrap;
}

@media print {
  .row-low td {
    background: #fffbeb;
  }
}

/* ---------- Summary boxes (3D floating tiles) ---------- */
.stock-summary {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.summary-box {
  flex: 1;
  min-width: 130px;
  background: linear-gradient(180deg, #ffffff, #f8fafc);
  border-radius: var(--r-lg);
  border: 1px solid rgba(203, 213, 225, 0.6);
  border-top: 1px solid #fff;
  box-shadow: var(--e2);
  padding: 14px 12px;
  text-align: center;
  position: relative;
  transition: transform var(--t-med), box-shadow var(--t-med);
}

.summary-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24%;
  right: 24%;
  height: 3px;
  border-radius: 0 0 8px 8px;
  background: linear-gradient(90deg, var(--slate-700), var(--accent));
}

.summary-box:hover {
  transform: translateY(-3px);
  box-shadow: var(--e3);
}

.summary-box .label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-light);
}

.summary-box .value {
  font-size: 22px;
  font-weight: 700;
  margin-top: 3px;
  color: var(--slate-900);
  font-variant-numeric: tabular-nums;
}

/* ---------- Accessibility: reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}