:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --border: #e2e5ea;
  --text: #1c2230;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  line-height: 1.45;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}
.topbar .brand { font-weight: 700; font-size: 16px; color: var(--text); }
.topbar nav { display: flex; gap: 14px; }
.topbar nav a { color: var(--muted); font-weight: 500; }
.topbar nav a:hover { color: var(--text); text-decoration: none; }
.topbar .spacer { flex: 1; }
.topbar .who { color: var(--muted); }

.container { max-width: 1200px; margin: 22px auto; padding: 0 20px; }

/* ---------- Buttons ---------- */
.btn, button.btn {
  display: inline-block;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  line-height: 1.2;
}
.btn:hover { background: #f0f2f5; text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { color: var(--danger); border-color: #f1c9c9; background: var(--danger-bg); }
.btn-danger:hover { background: #fde3e3; }
.btn-link { color: var(--muted); }

/* ---------- Flash ---------- */
.flash { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 14px; border: 1px solid var(--border); }
.flash-success { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.flash-error { background: var(--danger-bg); border-color: #fecaca; color: #991b1b; }
.flash-info { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }

/* ---------- Filters ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  background: var(--card);
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.filters input[type=search] { flex: 1; min-width: 220px; }
.filters input, .filters select {
  padding: 7px 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  background: #fff;
}
.result-meta { color: var(--muted); margin: 14px 2px 8px; }

/* ---------- Grid table ---------- */
.grid {
  width: 100%;
  border-collapse: collapse;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.grid th, .grid td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.grid th { background: #fafbfc; color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.grid tbody tr { cursor: pointer; }
.grid tbody tr:hover { background: #f3f6ff; }
.grid .empty { text-align: center; color: var(--muted); padding: 30px; }
.col-thumb { width: 52px; }
.col-name { font-weight: 500; max-width: 320px; }
.col-ids .id { display: block; font-size: 12px; }
.col-loc, .col-qty, .col-grp { white-space: nowrap; }
.col-qty { text-align: right; font-variant-numeric: tabular-nums; }
.col-comment { color: var(--muted); max-width: 280px; }
.comment-snippet { padding: 1px 0; }
.comment-snippet + .comment-snippet { border-top: 1px dashed var(--border); }
.col-motor { white-space: normal; max-width: 160px; }
.col-when, .col-who, .col-act { white-space: nowrap; }
.col-when { font-variant-numeric: tabular-nums; color: var(--muted); }
.col-detail { color: var(--text); }
.qty-zero { color: var(--danger); font-weight: 600; }

/* ---------- Motor chips ---------- */
.motor-chip {
  display: inline-block;
  padding: 1px 7px;
  margin: 1px 2px 1px 0;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--primary-dark);
  background: #eef3ff;
  border: 1px solid #d4e0fb;
  border-radius: 999px;
  white-space: nowrap;
}
a.motor-chip:hover { background: #e0eaff; text-decoration: none; }

.thumb {
  width: 40px; height: 40px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--border);
  display: block;
  background: #f0f2f5;
}
.thumb-empty { background: repeating-linear-gradient(45deg, #f0f2f5, #f0f2f5 5px, #e9ecf1 5px, #e9ecf1 10px); }

/* ---------- Pager ---------- */
.pager { display: flex; gap: 14px; align-items: center; justify-content: center; margin: 18px 0; }

/* ---------- Login ---------- */
.login-card {
  max-width: 340px;
  margin: 8vh auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
}
.login-card h1 { margin: 0 0 4px; }
.login-card form { display: flex; flex-direction: column; gap: 14px; margin-top: 18px; }
.login-card label { display: flex; flex-direction: column; gap: 5px; font-weight: 500; }
.login-card input {
  padding: 9px 10px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px;
}

/* ---------- Part detail ---------- */
.part-head { display: flex; align-items: flex-start; gap: 16px; }
.part-head h1 { margin: 0; flex: 1; }
.part-actions { display: flex; gap: 8px; }

.part-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  box-shadow: var(--shadow);
}
.card h2 { margin: 0 0 12px; font-size: 15px; }

dl.fields { display: grid; grid-template-columns: 150px 1fr; gap: 6px 14px; margin: 0; }
dl.fields dt { color: var(--muted); }
dl.fields dd { margin: 0; }

/* ---------- Gallery ---------- */
.gallery { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.gallery-item { position: relative; margin: 0; }
.gallery-item img {
  width: 96px; height: 96px; object-fit: cover;
  border-radius: 6px; border: 1px solid var(--border); display: block;
}
.img-del {
  position: absolute; top: -7px; right: -7px;
  width: 22px; height: 22px; border-radius: 50%;
  border: 1px solid var(--border); background: #fff; color: var(--danger);
  cursor: pointer; font-size: 15px; line-height: 1; padding: 0;
}
.img-del:hover { background: var(--danger-bg); }
.upload-form { display: flex; gap: 8px; align-items: center; }

/* ---------- Comments & history ---------- */
.comment-form, .part-form { display: grid; gap: 10px; }
.comment-form textarea, .part-form input, .part-form textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px; font-family: inherit;
}
.comment-form button { justify-self: start; }
.comment-list, .history { list-style: none; margin: 14px 0 0; padding: 0; }
.comment-list li { padding: 10px 0; border-bottom: 1px solid var(--border); }
.comment-list li:last-child { border-bottom: 0; }
.comment-actions { display: flex; gap: 12px; align-items: flex-start; margin-top: 5px; }
.comment-actions .inline-form { margin: 0; }
.link-btn {
  border: 0; background: none; padding: 0; margin: 0;
  color: var(--muted); font-size: 12px; cursor: pointer; font-family: inherit;
}
.link-btn:hover { color: var(--danger); text-decoration: underline; }
.comment-edit { display: inline-block; }
.comment-edit > summary {
  list-style: none; cursor: pointer; color: var(--muted); font-size: 12px;
}
.comment-edit > summary::-webkit-details-marker { display: none; }
.comment-edit > summary:hover { color: var(--primary); text-decoration: underline; }
.comment-edit[open] > summary { color: var(--primary); }
.comment-edit-form { display: grid; gap: 6px; margin-top: 8px; }
.comment-edit-form textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 14px; font-family: inherit;
}
.comment-edit-form button { justify-self: start; }
.history li { padding: 7px 0; border-bottom: 1px solid var(--border); display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; }
.history li:last-child { border-bottom: 0; }
.hist-action { font-weight: 600; }
.hist-change { color: var(--text); }
.hist-meta { margin-left: auto; }

/* ---------- Orders ---------- */
.order-badge {
  display: inline-block;
  padding: 0 7px;
  font-size: 11px;
  font-weight: 600;
  line-height: 1.7;
  color: #92400e;
  background: #fef3c7;
  border: 1px solid #fde68a;
  border-radius: 999px;
  white-space: nowrap;
}
.col-qty .order-badge { display: block; margin-top: 3px; font-weight: 600; }
.order-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; margin-bottom: 14px; }
.order-form label { display: flex; flex-direction: column; gap: 4px; font-weight: 500; font-size: 13px; }
.order-form label.grow { flex: 1; min-width: 160px; }
.order-form input { padding: 7px 9px; border: 1px solid var(--border); border-radius: var(--radius); font-size: 14px; font-family: inherit; }
.orders-table { width: 100%; border-collapse: collapse; }
.orders-table th, .orders-table td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.orders-table th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
.orders-table tr.order-done td { color: var(--muted); }
.order-actions { display: flex; gap: 6px; white-space: nowrap; }
.btn-sm { padding: 3px 9px; font-size: 12px; }

/* ---------- Trend charts ---------- */
.chart { width: 100%; height: auto; max-width: 360px; display: block; }
.chart-axis { fill: var(--muted); font-size: 9px; }
.chart-dates { display: flex; justify-content: space-between; max-width: 360px; margin-top: 2px; }
.chart-single { padding: 10px 0; font-size: 18px; }

/* ---------- Technician (internal) comments ---------- */
.tech-comments { margin-top: 16px; border-left: 3px solid #f0b429; }
.tech-comments h2 { font-weight: 600; }

/* ---------- Part form ---------- */
.part-form { grid-template-columns: 1fr 1fr; }
.part-form label { display: flex; flex-direction: column; gap: 5px; font-weight: 500; }
.part-form .full { grid-column: 1 / -1; }
.form-actions { display: flex; gap: 12px; align-items: center; }

@media (max-width: 760px) {
  .part-grid, .part-form { grid-template-columns: 1fr; }
  .col-comment, .col-ids .muted { display: none; }
}