/* ReadyStock - สไตล์หลัก ออกแบบให้อ่านง่ายบนจอโน้ตบุ๊ก (1366x768 ขึ้นไป) */
:root {
  --bg: #f4f6f8;
  --card: #ffffff;
  --line: #dfe4ea;
  --text: #23303d;
  --muted: #6b7a89;
  --primary: #1f6feb;
  --primary-dark: #1a5fca;
  --danger: #d93025;
  --danger-bg: #fdeceb;
  --success: #1e7f4f;
  --success-bg: #e7f6ee;
  --info-bg: #e8f0fe;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans Thai", "Sarabun", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 20px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 10px; }

/* ---------- แถบด้านบน ---------- */
.topbar {
  background: #1c2b3a;
  color: #fff;
  border-bottom: 3px solid var(--primary);
}
.topbar-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 8px 16px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.brand { color: #fff; font-weight: 700; font-size: 16px; }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 6px; flex: 1; }
.nav a {
  color: #cdd8e3;
  padding: 6px 12px;
  border-radius: var(--radius);
}
.nav a:hover { background: rgba(255, 255, 255, 0.1); text-decoration: none; }
.nav a.active { background: var(--primary); color: #fff; }
.user-box { display: flex; align-items: center; gap: 8px; }
.username { font-weight: 600; }

.badge {
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 999px;
  border: 1px solid currentColor;
  text-transform: uppercase;
}
.badge.admin { color: #ffcf5c; }
.badge.user { color: #9fd0ff; }

/* ---------- โครงหน้า ---------- */
.container { max-width: 1440px; margin: 0 auto; padding: 16px; }
.footer {
  max-width: 1440px;
  margin: 0 auto;
  padding: 16px;
  color: var(--muted);
  font-size: 12px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  margin-bottom: 14px;
}
.page-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.page-head h1 { flex: 1; }
.page-actions { display: flex; gap: 8px; }

.muted { color: var(--muted); }
.small { font-size: 13px; }
.xsmall { font-size: 11px; }
.inline { display: inline; }

/* ---------- ข้อความแจ้งเตือน ---------- */
.flash {
  padding: 10px 12px;
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid transparent;
}
.flash-success { background: var(--success-bg); color: var(--success); border-color: #b7e0c9; }
.flash-error { background: var(--danger-bg); color: var(--danger); border-color: #f3c2be; }
.flash-info { background: var(--info-bg); color: var(--primary-dark); border-color: #c3d8fb; }

/* ---------- ฟอร์ม ---------- */
label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 3px; }
input, select, textarea {
  width: 100%;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14px;
  background: #fff;
  color: var(--text);
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid rgba(31, 111, 235, 0.35);
  border-color: var(--primary);
}
textarea { resize: vertical; }

.btn {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  background: #eceff3;
  color: var(--text);
}
.btn:hover { filter: brightness(0.96); text-decoration: none; }
.btn-sm { padding: 4px 9px; font-size: 12px; }
.btn-block { width: 100%; margin-top: 12px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-secondary { background: #fff; border-color: var(--line); color: var(--text); }
.btn-danger { background: var(--danger); color: #fff; }
.btn-ghost { background: transparent; border-color: var(--line); color: var(--muted); }
.btn.disabled { pointer-events: none; opacity: 0.45; }

/* ---------- แถบค้นหา ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: flex-end;
}
.filter-bar .field { flex: 1 1 160px; min-width: 140px; }
.filter-bar .field-check, .filter-bar .field-actions { flex: 0 0 auto; }
.filter-bar .field-actions { display: flex; gap: 6px; }
.checkbox { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text); }
.checkbox input { width: auto; }

/* ---------- แถบสรุป ---------- */
.summary { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.summary-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 16px;
  min-width: 120px;
}
.summary-item.danger { border-color: #f3c2be; background: var(--danger-bg); }
.summary-label { display: block; font-size: 12px; color: var(--muted); }
.summary-value { font-size: 18px; font-weight: 700; }

/* ---------- ตาราง ---------- */
.table-card { padding: 0; overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}
.table thead th {
  background: #f0f3f6;
  font-size: 12px;
  color: var(--muted);
  position: sticky;
  top: 0;
  z-index: 1;
}
.table tbody tr:hover { background: #f7f9fb; }
.table-compact th, .table-compact td { padding: 5px 8px; }
.table .num { text-align: right; white-space: nowrap; }
.col-name { font-weight: 600; max-width: 280px; }
.col-note, .col-detail {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--muted);
}
.col-time { white-space: nowrap; font-variant-numeric: tabular-nums; }
.col-action { white-space: nowrap; text-align: right; }
.col-action form { display: inline-flex; gap: 4px; align-items: center; margin-left: 4px; }
.empty-row { text-align: center; color: var(--muted); padding: 28px; }
.row-empty { background: #fff6f5; }
.row-empty:hover { background: #ffeceb; }

.tag {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.tag-danger { background: var(--danger); color: #fff; }
.tag-success { background: var(--success-bg); color: var(--success); }
.tag-info { background: var(--info-bg); color: var(--primary-dark); }

/* ---------- แบ่งหน้า ---------- */
.pager { display: flex; gap: 5px; align-items: center; justify-content: center; padding: 4px 0 20px; }
.pager-gap { color: var(--muted); padding: 0 4px; }

/* ---------- ฟอร์มสินค้า ---------- */
.form-card { max-width: 820px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.form-grid .field-wide { grid-column: 1 / -1; }
.form-actions { display: flex; gap: 8px; margin-top: 16px; }

/* ---------- หน้า login / register ---------- */
.auth-wrap { display: flex; justify-content: center; padding-top: 6vh; }
.auth-card { width: 100%; max-width: 380px; }
.auth-card h1 { margin-bottom: 4px; }
.auth-card form { margin-top: 14px; }
.auth-card label { margin-top: 10px; }

/* ---------- หน้า admin ---------- */
.admin-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.row-form { display: flex; gap: 6px; align-items: center; margin: 0; }
.row-form input, .row-form select { flex: 1; min-width: 90px; }

/* ---------- รหัสเชิญ ---------- */
.card-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
.card-head h2 { margin: 0; }
.invite-form { margin-bottom: 12px; }
.invite-form .inline-label { margin: 0; white-space: nowrap; }
.invite-form input[type="number"] { flex: 0 0 90px; }
.col-code { width: 130px; }
.invite-code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1.5px;
  background: #f0f3f6;
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 2px 8px;
  user-select: all;
}
.code-input {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.row-dim { color: var(--muted); }
.row-dim .invite-code { background: transparent; color: var(--muted); font-weight: 400; text-decoration: line-through; }
.tag-muted { background: #e6eaee; color: var(--muted); }
.btn-copied { background: var(--success-bg); color: var(--success); border-color: #b7e0c9; }

/* ---------- รหัสสินค้า / ลากสลับลำดับหมวดหมู่ ---------- */
.item-code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  background: #eef3fb;
  border-radius: 4px;
  padding: 1px 6px;
  white-space: nowrap;
}
.row-empty .item-code { background: #fde8e6; color: var(--danger); }
.prefix-input { flex: 0 0 110px; text-align: center; }
.hidden-form { display: none; }
.col-drag { width: 62px; white-space: nowrap; color: var(--muted); }
.drag-handle { cursor: grab; font-size: 15px; letter-spacing: -2px; margin-right: 4px; }
.order-number { font-variant-numeric: tabular-nums; }
[data-sortable] tbody tr { cursor: default; }
[data-sortable] tbody tr.dragging { opacity: 0.45; background: var(--info-bg); }
.move-buttons { display: inline-flex; gap: 2px; margin-right: 4px; }
.move-buttons button { padding: 2px 7px; line-height: 1.1; }
.move-buttons button[disabled] { opacity: 0.3; cursor: default; }
#save-category-order { margin-top: 8px; }

/* ---------- หน้า error ---------- */
.center-card { max-width: 460px; margin: 8vh auto; text-align: center; }
.error-code { font-size: 46px; margin: 0; color: var(--muted); }

@media (max-width: 900px) {
  .form-grid, .admin-grid { grid-template-columns: 1fr; }
  .topbar-inner { flex-wrap: wrap; }
}