:root {
  --bg: #eef0f3;
  --card: #ffffff;
  --border: #e3e6ea;
  --text: #1c1f23;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

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

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 16px; }

/* Header */
.app-header {
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 20;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 12px 16px; flex-wrap: wrap;
}
.app-header h1 { font-size: 19px; margin: 0; }
.header-tools { display: flex; gap: 8px; align-items: center; }

/* Buttons & inputs */
.btn {
  font: inherit; padding: 8px 14px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  border-radius: var(--radius); cursor: pointer; transition: background .15s, border-color .15s;
}
.btn:hover { background: #f0f2f5; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.input {
  font: inherit; padding: 8px 10px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--card); color: var(--text);
}
#search { min-width: 180px; }

/* Banner */
.banner { padding: 10px 14px; border-radius: var(--radius); margin: 14px auto; font-size: 14px; }
.banner.info  { background: #e0edff; color: #1e40af; }
.banner.error { background: #fee2e2; color: #991b1b; }
.banner.ok    { background: #dcfce7; color: #166534; }

.hint { color: var(--muted); font-size: 13px; margin: 8px auto 30px; }

/* ---------- Board ---------- */
.board-scroll { overflow-x: auto; padding: 20px 16px 8px; }
.board {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(240px, 1fr);
  gap: 14px;
  min-width: min-content;
  max-width: 1200px;
  margin: 0 auto;
}

.column {
  background: #e6e9ee;
  border-radius: 12px;
  display: flex; flex-direction: column;
  min-height: 120px;
}
.col-head {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 14px 8px; font-weight: 700; font-size: 14px;
  position: sticky; top: 0;
}
.col-head .dot { width: 11px; height: 11px; border-radius: 50%; flex: none; }
.col-head .count {
  margin-left: auto; background: rgba(0,0,0,.08);
  color: var(--muted); font-size: 12px; font-weight: 700;
  padding: 1px 9px; border-radius: 999px;
}
.col-body {
  padding: 4px 10px 12px; display: flex; flex-direction: column; gap: 10px;
  flex: 1; min-height: 60px; border-radius: 0 0 12px 12px;
  transition: background .12s;
}
.col-body.drop-hover { background: rgba(37,99,235,.10); outline: 2px dashed var(--primary); outline-offset: -4px; }
.col-empty { color: var(--muted); font-size: 13px; text-align: center; padding: 14px 0; }

/* ---------- Card ---------- */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-top: 3px solid var(--accent, var(--primary));
  border-radius: 10px; padding: 10px 12px; box-shadow: var(--shadow);
  cursor: grab; user-select: none;
}
.card:active { cursor: grabbing; }
.card.dragging { opacity: .5; }
.card-top { display: flex; align-items: flex-start; gap: 8px; }
.card-name { font-weight: 600; font-size: 14px; flex: 1; word-break: break-word; }
.card-menu-btn {
  border: none; background: none; cursor: pointer; color: var(--muted);
  font-size: 18px; line-height: 1; padding: 0 2px; border-radius: 6px;
}
.card-menu-btn:hover { background: #eef0f3; color: var(--text); }
.card-meta { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.qty-badge {
  background: var(--accent, var(--primary)); color: #fff;
  font-size: 12px; font-weight: 700; padding: 1px 9px; border-radius: 999px;
}
.card-cat { color: var(--muted); font-size: 12px; }

/* หน่วยย่อย (units) เมื่อกางการ์ด */
.units { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.unit {
  display: flex; align-items: center; gap: 8px;
  background: #f6f7f9; border: 1px solid var(--border); border-radius: 8px;
  padding: 5px 8px; font-size: 12px; cursor: grab;
}
.unit:active { cursor: grabbing; }
.unit.dragging { opacity: .5; }
.unit .u-label { flex: 1; color: var(--text); word-break: break-word; }
.unit .u-loc { color: var(--muted); }
.unit .u-del {
  border: none; background: none; color: var(--muted); cursor: pointer;
  font-size: 15px; line-height: 1; padding: 0 2px; border-radius: 5px;
}
.unit .u-del:hover { background: #fde2e2; color: #b91c1c; }

/* ---------- Modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.45);
  display: flex; align-items: center; justify-content: center; padding: 16px; z-index: 50;
}
.modal { background: var(--card); border-radius: 14px; padding: 22px; width: 100%; max-width: 480px; box-shadow: 0 10px 40px rgba(0,0,0,.2); }
.modal h2 { margin: 0 0 16px; font-size: 18px; }
#equipForm label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
#equipForm .input { display: block; width: 100%; margin-top: 4px; color: var(--text); }
#equipForm .row { display: flex; gap: 12px; }
#equipForm .row label { flex: 1; }
.modal-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 6px; }

/* ---------- Popup menu ---------- */
.pop-menu {
  position: absolute; background: var(--card); border: 1px solid var(--border);
  border-radius: 10px; box-shadow: 0 8px 24px rgba(0,0,0,.16);
  padding: 5px; z-index: 60; min-width: 180px;
}
.pop-menu button {
  display: flex; align-items: center; gap: 8px; width: 100%; text-align: left;
  padding: 8px 12px; border: none; background: none; font: inherit;
  cursor: pointer; border-radius: 7px; color: var(--text);
}
.pop-menu button:hover { background: #f0f2f5; }
.pop-menu .sep { height: 1px; background: var(--border); margin: 4px 2px; }
.pop-menu .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex: none; }
.pop-menu .danger { color: #b91c1c; }

@media (max-width: 560px) {
  .app-header h1 { font-size: 17px; width: 100%; }
  #equipForm .row { flex-direction: column; gap: 0; }
}