* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #f5f5f5;
  --card: #fff;
  --primary: #2196F3;
  --primary-dark: #1976D2;
  --text: #212121;
  --text2: #757575;
  --border: #e0e0e0;
  --success: #4CAF50;
  --danger: #f44336;
  --warning: #FF9800;
  --radius: 8px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  padding-bottom: 60px;
}

/* --- Header --- */
.header {
  background: var(--primary);
  color: #fff;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header h1 { font-size: 18px; font-weight: 600; }
.header .user-info { font-size: 12px; opacity: 0.8; }

/* --- Scan bar --- */
.scan-bar {
  padding: 8px 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  display: flex;
  gap: 8px;
}
.scan-bar input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 16px;
  outline: none;
}
.scan-bar input:focus { border-color: var(--primary); }
.scan-bar button {
  padding: 10px 16px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  cursor: pointer;
}

/* --- Tabs --- */
.tabs {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--card);
  border-top: 1px solid var(--border);
  display: flex;
  z-index: 100;
}
.tab {
  flex: 1;
  padding: 8px 0;
  text-align: center;
  font-size: 11px;
  color: var(--text2);
  border: none;
  background: none;
  cursor: pointer;
}
.tab.active { color: var(--primary); font-weight: 600; }
.tab-icon { font-size: 20px; display: block; margin-bottom: 2px; }

/* --- Content --- */
.content { padding: 8px 16px; }
.page { display: none; }
.page.active { display: block; }

/* --- Cards --- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 8px;
  border: 1px solid var(--border);
}
.card-title { font-weight: 600; margin-bottom: 4px; }
.card-subtitle { color: var(--text2); font-size: 12px; }
.card-row { display: flex; justify-content: space-between; align-items: center; margin-top: 4px; }
.card-qty { font-size: 18px; font-weight: 700; color: var(--primary); }
.card-location { font-size: 12px; color: var(--text2); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}
.badge-component { background: #E3F2FD; color: #1565C0; }
.badge-board { background: #E8F5E9; color: #2E7D32; }
.badge-case { background: #FFF3E0; color: #E65100; }
.badge-work { background: #F3E5F5; color: #7B1FA2; }
.badge-default { background: #EEEEEE; color: #616161; }

/* --- Forms --- */
.form-group { margin-bottom: 12px; }
.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text2);
  margin-bottom: 4px;
  font-weight: 500;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
}
.form-group input:focus, .form-group select:focus { border-color: var(--primary); }

.btn {
  display: block;
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: var(--radius);
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-outline {
  background: none;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn + .btn { margin-top: 8px; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* --- Overview --- */
.overview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 12px;
}
.overview-card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 12px;
  text-align: center;
  border: 1px solid var(--border);
}
.overview-value { font-size: 24px; font-weight: 700; color: var(--primary); }
.overview-label { font-size: 11px; color: var(--text2); margin-top: 2px; }

/* --- Search --- */
.search-box {
  padding: 8px 0;
  margin-bottom: 8px;
}
.search-box input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
}

/* --- Empty state --- */
.empty { text-align: center; padding: 32px 16px; color: var(--text2); }
.empty-icon { font-size: 48px; margin-bottom: 8px; }

/* --- Toast --- */
.toast {
  position: fixed;
  top: 60px;
  left: 16px;
  right: 16px;
  padding: 12px 16px;
  border-radius: var(--radius);
  color: #fff;
  font-weight: 500;
  z-index: 200;
  display: none;
  animation: slideDown 0.3s ease;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.show { display: block; }

@keyframes slideDown {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 300;
  display: none;
  align-items: flex-end;
  justify-content: center;
}
.modal-overlay.show { display: flex; }
.modal {
  background: var(--card);
  border-radius: 16px 16px 0 0;
  padding: 20px 16px;
  width: 100%;
  max-width: 480px;
  max-height: 80vh;
  overflow-y: auto;
}
.modal-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 16px;
  text-align: center;
}