:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --purple: #7c3aed;
  --purple-light: #f5f3ff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --sidebar-w: 240px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,.1), 0 2px 4px -1px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,.1), 0 4px 6px -2px rgba(0,0,0,.05);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: var(--gray-100); color: var(--gray-800); display: flex; height: 100vh; overflow: hidden; }

/* ── Sidebar ── */
#sidebar {
  width: var(--sidebar-w); background: var(--gray-900); color: #fff;
  display: flex; flex-direction: column; flex-shrink: 0; overflow-y: auto;
}
#sidebar .logo {
  padding: 20px 16px; display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
#sidebar .logo-icon { font-size: 24px; }
#sidebar .logo-text { font-size: 14px; font-weight: 700; line-height: 1.2; }
#sidebar .logo-sub { font-size: 11px; color: var(--gray-400); }
#sidebar nav { flex: 1; padding: 12px 8px; }
#sidebar nav a {
  display: flex; align-items: center; gap: 10px; padding: 9px 10px;
  border-radius: 6px; color: var(--gray-400); text-decoration: none;
  font-size: 13.5px; font-weight: 500; transition: all .15s; cursor: pointer;
  margin-bottom: 2px;
}
#sidebar nav a:hover { background: rgba(255,255,255,.07); color: #fff; }
#sidebar nav a.active { background: var(--primary); color: #fff; }
#sidebar nav a .nav-icon { width: 18px; text-align: center; font-size: 15px; }
#sidebar .sidebar-footer {
  padding: 12px 16px; border-top: 1px solid rgba(255,255,255,.1);
  font-size: 11px; color: var(--gray-500);
}
.portal-link {
  display: block; margin: 8px; padding: 8px 12px; background: rgba(255,255,255,.07);
  border-radius: 6px; color: var(--gray-300) !important; font-size: 12px;
  text-decoration: none; text-align: center;
}
.portal-link:hover { background: rgba(255,255,255,.12) !important; color: #fff !important; }

/* ── Main ── */
#main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }
#topbar {
  background: #fff; border-bottom: 1px solid var(--gray-200);
  padding: 0 24px; height: 56px; display: flex; align-items: center;
  justify-content: space-between; flex-shrink: 0; box-shadow: var(--shadow);
}
#topbar h1 { font-size: 18px; font-weight: 600; color: var(--gray-800); }
#topbar .topbar-actions { display: flex; gap: 8px; align-items: center; }

#content { flex: 1; overflow-y: auto; padding: 24px; }

/* ── Cards ── */
.card {
  background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; margin-bottom: 16px;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; padding-bottom: 12px; border-bottom: 1px solid var(--gray-100);
}
.card-header h2 { font-size: 15px; font-weight: 600; }

/* ── Stats Grid ── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 14px; margin-bottom: 20px; }
.stat-card {
  background: #fff; border-radius: var(--radius); padding: 16px;
  box-shadow: var(--shadow); border-left: 3px solid var(--primary);
}
.stat-card.success { border-color: var(--success); }
.stat-card.warning { border-color: var(--warning); }
.stat-card.danger { border-color: var(--danger); }
.stat-card.purple { border-color: var(--purple); }
.stat-label { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--gray-500); margin-bottom: 6px; }
.stat-value { font-size: 28px; font-weight: 700; color: var(--gray-800); }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 14px; border-radius: 6px; font-size: 13px; font-weight: 500;
  cursor: pointer; border: 1px solid transparent; transition: all .15s; text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-secondary { background: #fff; color: var(--gray-700); border-color: var(--gray-300); }
.btn-secondary:hover { background: var(--gray-50); }
.btn-success { background: var(--success); color: #fff; border-color: var(--success); }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-icon { padding: 6px; }

/* ── Tables ── */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th { text-align: left; padding: 10px 12px; font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em; color: var(--gray-500); background: var(--gray-50); border-bottom: 1px solid var(--gray-200); white-space: nowrap; }
td { padding: 10px 12px; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--gray-50); }
.clickable-row { cursor: pointer; }

/* ── Status Badges ── */
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 20px;
  font-size: 11px; font-weight: 600; white-space: nowrap;
}
.badge-received { background: var(--gray-100); color: var(--gray-700); }
.badge-diagnosing { background: #dbeafe; color: #1e40af; }
.badge-waiting { background: #fef3c7; color: #92400e; }
.badge-in-repair { background: #e0e7ff; color: #3730a3; }
.badge-ready { background: var(--success-light); color: var(--success); }
.badge-picked-up { background: var(--gray-100); color: var(--gray-500); }
.badge-cancelled { background: var(--danger-light); color: var(--danger); }
.badge-normal { background: var(--gray-100); color: var(--gray-600); }
.badge-high { background: var(--warning-light); color: var(--warning); }
.badge-urgent { background: var(--danger-light); color: var(--danger); }
.badge-low { background: var(--primary-light); color: var(--primary); }
.badge-ok { background: var(--success-light); color: var(--success); }
.badge-low-stock { background: var(--warning-light); color: var(--warning); }
.badge-out { background: var(--danger-light); color: var(--danger); }

/* ── Forms ── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-grid.three { grid-template-columns: 1fr 1fr 1fr; }
.form-grid.one { grid-template-columns: 1fr; }
.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group.span2 { grid-column: span 2; }
.form-group.span3 { grid-column: span 3; }
label { font-size: 12px; font-weight: 600; color: var(--gray-600); }
input, select, textarea {
  padding: 8px 10px; border: 1px solid var(--gray-300); border-radius: 6px;
  font-size: 13.5px; color: var(--gray-800); background: #fff;
  transition: border-color .15s; width: 100%; font-family: inherit;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
textarea { resize: vertical; min-height: 72px; }
.form-row { display: flex; gap: 8px; align-items: flex-start; }
.search-box { position: relative; }
.search-box input { padding-left: 32px; width: 280px; }
.search-box::before { content: '🔍'; position: absolute; left: 9px; top: 50%; transform: translateY(-50%); font-size: 13px; pointer-events: none; }

/* ── Modal ── */
.modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,.5); z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 20px;
}
.modal {
  background: #fff; border-radius: 10px; box-shadow: var(--shadow-lg);
  width: 100%; max-width: 680px; max-height: 90vh; display: flex; flex-direction: column;
}
.modal.modal-lg { max-width: 860px; }
.modal.modal-sm { max-width: 420px; }
.modal-header {
  padding: 16px 20px; border-bottom: 1px solid var(--gray-200);
  display: flex; align-items: center; justify-content: space-between; flex-shrink: 0;
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-body { padding: 20px; overflow-y: auto; flex: 1; }
.modal-footer {
  padding: 14px 20px; border-top: 1px solid var(--gray-200);
  display: flex; justify-content: flex-end; gap: 8px; flex-shrink: 0;
}
.close-btn { background: none; border: none; font-size: 20px; cursor: pointer; color: var(--gray-400); padding: 2px 6px; border-radius: 4px; }
.close-btn:hover { background: var(--gray-100); color: var(--gray-600); }

/* ── Ticket Detail ── */
.ticket-meta { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.meta-item { background: var(--gray-50); border-radius: 6px; padding: 10px 12px; }
.meta-label { font-size: 10px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--gray-500); margin-bottom: 3px; }
.meta-value { font-size: 14px; font-weight: 500; color: var(--gray-800); }

.history-list { list-style: none; }
.history-item { padding: 8px 0; border-bottom: 1px solid var(--gray-100); font-size: 13px; }
.history-item:last-child { border-bottom: none; }
.history-time { font-size: 11px; color: var(--gray-400); margin-top: 2px; }

/* ── Drop-off Slip ── */
@media print {
  body * { visibility: hidden !important; }
  #print-slip, #print-slip * { visibility: visible !important; }
  #print-slip { position: fixed; inset: 0; padding: 30px; background: #fff; z-index: 9999; }
}
#print-slip { display: none; }

.slip {
  font-family: 'Arial', sans-serif; max-width: 680px; margin: 0 auto;
  border: 2px solid #000; padding: 20px;
}
.slip-header { text-align: center; border-bottom: 2px solid #000; padding-bottom: 12px; margin-bottom: 16px; }
.slip-header h2 { font-size: 22px; margin-bottom: 4px; }
.slip-header p { font-size: 13px; color: #555; }
.slip-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; margin-bottom: 14px; }
.slip-field { border-bottom: 1px solid #ccc; padding-bottom: 4px; }
.slip-field .sf-label { font-size: 10px; font-weight: 700; text-transform: uppercase; color: #666; }
.slip-field .sf-value { font-size: 13px; font-weight: 600; min-height: 18px; }
.slip-section { margin-bottom: 12px; }
.slip-section h4 { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: #888; margin-bottom: 6px; border-bottom: 1px solid #eee; padding-bottom: 4px; }
.slip-terms { margin-top: 16px; padding-top: 12px; border-top: 1px solid #ccc; font-size: 10.5px; color: #666; }
.slip-sigs { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 20px; }
.slip-sig-line { border-bottom: 1px solid #000; height: 32px; }
.slip-sig-label { font-size: 10px; color: #666; margin-top: 3px; }

/* ── Alerts / Toast ── */
.toast-container { position: fixed; bottom: 24px; right: 24px; z-index: 9999; display: flex; flex-direction: column; gap: 8px; }
.toast {
  background: var(--gray-900); color: #fff; padding: 12px 16px; border-radius: 8px;
  font-size: 13px; box-shadow: var(--shadow-lg); min-width: 240px;
  animation: slideIn .2s ease; display: flex; align-items: center; gap: 10px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
@keyframes slideIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ── Misc ── */
.empty-state { text-align: center; padding: 48px 20px; color: var(--gray-400); }
.empty-state .empty-icon { font-size: 40px; margin-bottom: 12px; }
.empty-state p { font-size: 14px; }
.section-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--gray-500); margin-bottom: 10px; margin-top: 16px; }
.divider { border: none; border-top: 1px solid var(--gray-200); margin: 16px 0; }
.text-muted { color: var(--gray-400); }
.text-sm { font-size: 12px; }
.text-right { text-align: right; }
.flex { display: flex; }
.gap-2 { gap: 8px; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-2 { margin-bottom: 8px; }
.font-bold { font-weight: 700; }
.w-full { width: 100%; }
.tabs { display: flex; gap: 0; border-bottom: 2px solid var(--gray-200); margin-bottom: 16px; }
.tab-btn {
  padding: 8px 16px; font-size: 13px; font-weight: 500; cursor: pointer;
  border: none; background: none; color: var(--gray-500); border-bottom: 2px solid transparent;
  margin-bottom: -2px; transition: all .15s;
}
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary); }
.tab-btn:hover { color: var(--gray-700); }
.tag { display: inline-block; background: var(--gray-100); color: var(--gray-600); font-size: 11px; padding: 2px 7px; border-radius: 4px; margin: 1px; }
.customer-tag { display: inline-block; font-size: 11px; font-weight: 600; padding: 2px 8px; border-radius: 20px; margin: 1px; }
.tag-vip { background: #fef9c3; color: #854d0e; }
.tag-wholesale { background: #dbeafe; color: #1e40af; }
.tag-business { background: #ede9fe; color: #5b21b6; }
.tag-problematic { background: #fee2e2; color: #991b1b; }
.tag-regular { background: #f0fdf4; color: #166534; }
.tag-warranty { background: #ecfdf5; color: #065f46; }

/* Checklist */
.checklist-item { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--gray-100); }
.checklist-item:last-child { border-bottom: none; }
.checklist-item input[type=checkbox] { width: 18px; height: 18px; cursor: pointer; accent-color: var(--success); flex-shrink: 0; }
.checklist-item label { font-size: 13px; cursor: pointer; flex: 1; }
.checklist-item.done label { text-decoration: line-through; color: var(--gray-400); }
.checklist-item .check-meta { font-size: 10px; color: var(--gray-400); white-space: nowrap; }
.checklist-progress { height: 6px; background: var(--gray-200); border-radius: 3px; margin-bottom: 12px; overflow: hidden; }
.checklist-progress-bar { height: 100%; background: var(--success); border-radius: 3px; transition: width .3s; }

/* ── Responsive ── */
@media (max-width: 768px) {
  #sidebar { display: none; }
  .form-grid { grid-template-columns: 1fr; }
  .form-group.span2 { grid-column: span 1; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}