:root {
  /* โทนสีเข้ม Enterprise */
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #273449;
  --bg-hover: #334155;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --border: #475569;
  --radius: 10px;
  --shadow: 0 4px 12px rgba(0,0,0,.25);
}

* { margin:0; padding:0; box-sizing:border-box; font-family:system-ui,-apple-system,sans-serif; }
body { background:var(--bg-primary); color:var(--text-primary); min-height:100vh; }

/* Layout */
.app-container { display:flex; min-height:100vh; }
.sidebar { width:250px; background:var(--bg-secondary); border-right:1px solid var(--border); padding:1.5rem 1rem; }
.sidebar-logo { font-size:1.2rem; font-weight:700; color:var(--accent-light); margin-bottom:2rem; }
.sidebar-menu { list-style:none; }
.sidebar-menu li { margin-bottom:.5rem; }
.sidebar-menu a { display:block; padding:.75rem 1rem; color:var(--text-secondary); border-radius:var(--radius); text-decoration:none; transition:.2s; }
.sidebar-menu a:hover, .sidebar-menu a.active { background:var(--bg-card); color:var(--accent-light); }
.main-content { flex:1; padding:1.5rem; }
.top-bar { display:flex; justify-content:space-between; align-items:center; margin-bottom:2rem; flex-wrap:wrap; gap:1rem; }
.top-actions { display:flex; gap:.75rem; }

/* ปุ่มเด่น */
.btn { padding:.6rem 1.2rem; border-radius:var(--radius); border:none; font-weight:600; cursor:pointer; transition:.2s; text-decoration:none; display:inline-flex; align-items:center; gap:.5rem; }
.btn-primary { background:var(--accent); color:white; }
.btn-primary:hover { background:#2563eb; transform:translateY(-1px); box-shadow:var(--shadow); }
.btn-success { background:var(--success); color:white; }
.btn-danger { background:var(--danger); color:white; }
.btn-warning { background:var(--warning); color:#1f2937; }
.btn-outline { background:transparent; border:1px solid var(--border); color:var(--text-primary); }
.btn-outline:hover { background:var(--bg-card); border-color:var(--accent); }

/* การ์ด */
.grid-4 { display:grid; grid-template-columns:repeat(auto-fit,minmax(180px,1fr)); gap:1rem; margin-bottom:2rem; }
.card { background:var(--bg-card); border-radius:var(--radius); padding:1.25rem; border:1px solid var(--border); box-shadow:var(--shadow); }
.card h3 { font-size:.9rem; color:var(--text-muted); margin-bottom:.5rem; }
.card .num { font-size:2rem; font-weight:700; }
.card.pending .num { color:var(--warning); }
.card.close .num { color:#8b5cf6; }
.card.progress .num { color:var(--danger); }
.card.lowstock .num { color:var(--warning); }
.card.total .num { color:var(--accent-light); }

/* ตาราง */
.table-wrap { background:var(--bg-card); border-radius:var(--radius); border:1px solid var(--border); overflow:hidden; margin:1.5rem 0; }
table { width:100%; border-collapse:collapse; }
th, td { padding:.9rem 1rem; text-align:left; border-bottom:1px solid var(--border); }
th { background:var(--bg-secondary); color:var(--text-muted); font-weight:600; }
tr:hover { background:var(--bg-hover); }
.status { display:inline-block; padding:.25rem .75rem; border-radius:20px; font-size:.8rem; font-weight:600; }
.status-pending { background:rgba(245,158,11,.15); color:var(--warning); }
.status-assigned { background:rgba(59,130,246,.15); color:var(--accent-light); }
.status-in_progress { background:rgba(239,68,68,.15); color:var(--danger); }
.status-pending_close { background:rgba(139,92,246,.18); color:#a78bfa; }
.status-completed { background:rgba(16,185,129,.15); color:var(--success); }
.reject-note { margin-top:.9rem; padding:.7rem .9rem; border-radius:var(--radius); background:rgba(239,68,68,.12); border:1px solid rgba(239,68,68,.3); color:#fca5a5; font-size:.9rem; }

/* ฟอร์ม */
.form-wrap { max-width:700px; background:var(--bg-card); padding:2rem; border-radius:var(--radius); border:1px solid var(--border); }
.form-group { margin-bottom:1.25rem; }
.form-group label { display:block; margin-bottom:.5rem; color:var(--text-secondary); font-weight:500; }
input, select, textarea { width:100%; padding:.8rem 1rem; background:var(--bg-secondary); border:1px solid var(--border); border-radius:var(--radius); color:var(--text-primary); font-size:1rem; }
input:focus, select:focus, textarea:focus { outline:none; border-color:var(--accent); box-shadow:0 0 0 3px rgba(59,130,246,.2); }

/* Login */
.login-wrap { min-height:100vh; display:flex; align-items:center; justify-content:center; background:linear-gradient(135deg, #0f172a, #1e293b); }
.login-card { width:100%; max-width:420px; background:var(--bg-card); padding:2.5rem; border-radius:var(--radius); border:1px solid var(--border); box-shadow:0 10px 40px rgba(0,0,0,.3); }
.login-card h1 { text-align:center; margin-bottom:2rem; color:var(--accent-light); }
.company-select { display:grid; grid-template-columns:1fr 1fr; gap:.75rem; margin-bottom:1.5rem; }
.company-btn { padding:1rem; background:var(--bg-secondary); border:2px solid var(--border); border-radius:var(--radius); color:var(--text-primary); cursor:pointer; transition:.2s; }
.company-btn:hover, .company-btn.selected { border-color:var(--accent); background:var(--bg-hover); }

/* Responsive */
@media (max-width:900px) {
  .grid-4 { grid-template-columns:repeat(2,1fr); }
  .sidebar { position:fixed; left:-100%; z-index:100; transition:.3s; }
  .sidebar.open { left:0; }
}
@media (max-width:600px) {
  .grid-4 { grid-template-columns:1fr; }
  .company-select { grid-template-columns:1fr; }
}

/* ---------- เพิ่มเติม: utility ---------- */
.muted { color: var(--text-muted); }
.small { font-size: .85rem; }
.center { text-align:center; }
.sub { font-size: .75rem; color: var(--text-muted); margin-top: .15rem; }
.empty { text-align:center; color: var(--text-muted); padding:1.5rem; }
.pre { white-space:pre-wrap; word-break:break-word; line-height:1.55; }
.filter-bar { display:flex; gap:1rem; margin-bottom:1rem; flex-wrap:wrap; }
.btn-sm { padding:.3rem .6rem; font-size:.8rem; }
.table-actions { display:flex; gap:.4rem; flex-wrap:wrap; }
tr.highlight { background: rgba(59,130,246,.16); }
tr.highlight td { border-bottom-color: var(--accent); }

/* ---------- สถานะเพิ่มเติม ---------- */
.status-out { background: rgba(239,68,68,.22); color: var(--danger); }
.status-cancelled { background: rgba(148,163,184,.15); color: var(--text-muted); }

/* ---------- สิทธิ์ผู้ใช้ ---------- */
.role-admin { background: rgba(59,130,246,.18); color: #93c5fd; }
.role-supervisor { background: rgba(139,92,246,.18); color: #c4b5fd; }
.role-technician { background: rgba(16,185,129,.16); color: #6ee7b7; }
.role-employee { background: rgba(148,163,184,.16); color: var(--text-muted); }
.success-note {
  margin-top: .9rem; padding: .75rem .9rem; border-radius: var(--radius);
  background: rgba(16,185,129,.12); border: 1px solid rgba(16,185,129,.3);
  color: #6ee7b7; font-size: .9rem; display: flex; gap: .75rem;
  align-items: center; flex-wrap: wrap;
}
.part-add input { flex: 1; min-width: 160px; }

/* ---------- ฟอร์ม ---------- */
.form-error { color: var(--danger); font-size:.85rem; margin-bottom:.75rem; }

/* ---------- Modal ---------- */
dialog.modal {
  background: var(--bg-card); color: var(--text-primary);
  border:1px solid var(--border); border-radius:var(--radius);
  padding:1.5rem; width:min(560px,92vw); max-height:90vh; overflow-y:auto;
  box-shadow:0 20px 60px rgba(0,0,0,.45);
}
dialog.modal.modal-wide { width:min(820px,94vw); }
dialog::backdrop { background: rgba(2,6,23,.65); }
.modal-head { display:flex; justify-content:space-between; align-items:flex-start; gap:1rem; margin-bottom:1rem; }
.modal-head h2 { font-size:1.15rem; line-height:1.4; }
.modal-actions { display:flex; justify-content:flex-end; gap:.6rem; margin-top:1.25rem; flex-wrap:wrap; }
.icon-btn { background:transparent; border:none; color:var(--text-muted); font-size:1.1rem; cursor:pointer; padding:.25rem; }
.icon-btn:hover { color:var(--text-primary); }
dialog h3 { margin:1.1rem 0 .5rem; font-size:1rem; color:var(--text-secondary); }
.detail-grid { display:grid; grid-template-columns:1fr 1fr; gap:.75rem 1.25rem; }
.detail-grid > div { display:flex; flex-direction:column; gap:.15rem; min-width:0; }
.table-wrap.slim { margin:.5rem 0; }
.table-wrap.slim th, .table-wrap.slim td { padding:.5rem .7rem; font-size:.85rem; }
.part-add { display:flex; gap:.5rem; flex-wrap:wrap; margin:.5rem 0; }
.part-add select { flex:1; min-width:200px; }
.part-row { display:flex; justify-content:space-between; align-items:center; gap:.5rem; padding:.4rem .6rem; background:var(--bg-secondary); border-radius:8px; margin-bottom:.35rem; font-size:.9rem; }

/* ---------- Toast ---------- */
.toast-box { position:fixed; right:1rem; bottom:1rem; display:flex; flex-direction:column; gap:.5rem; z-index:200; max-width:min(380px,90vw); }
.toast {
  background:var(--bg-card); border:1px solid var(--border); border-left:4px solid var(--accent);
  padding:.8rem 1rem; border-radius:var(--radius); box-shadow:var(--shadow);
  opacity:0; transform:translateY(8px); transition:.2s; font-size:.9rem;
}
.toast.show { opacity:1; transform:none; }
.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--danger); }

/* ---------- เมนูมือถือ ---------- */
.menu-toggle {
  display:none; background:var(--bg-card); border:1px solid var(--border);
  color:var(--text-primary); border-radius:var(--radius);
  padding:.5rem .75rem; font-size:1.1rem; cursor:pointer;
}
.nav-backdrop { display:none; position:fixed; inset:0; background:rgba(2,6,23,.6); z-index:90; }
body.nav-open .nav-backdrop { display:block; }

@media (max-width:900px) {
  .menu-toggle { display:inline-flex; align-items:center; }
  .sidebar { height:100vh; overflow-y:auto; }
  .main-content { padding:1rem; }
  .top-actions { width:100%; }
  .top-bar { align-items:flex-start; }
  .table-wrap { overflow-x:auto; }
  table { min-width:640px; }
  .detail-grid { grid-template-columns:1fr; }
}