/* Header */
.top-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-4) var(--spacing-5);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.top-header h1 {
  font-size: 1.25rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}
.top-header .logo {  height: 24px;  width: auto;  border-radius: 4px; }
.icon-btn {  width: 40px;  height: 40px;  border-radius: 50%;  display: flex;  align-items: center;  justify-content: center;  background: var(--card-bg);  color: var(--text-main);  transition: transform var(--transition-fast); }
.icon-btn:active {  transform: scale(0.9); }
.logout-btn {
  width: auto;
  border-radius: 20px;
  padding: 0 12px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: #d70015;
}
.logout-btn:active {
  background: #b30012;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}
.header-tool-btn {
  border: 1px solid rgba(0,0,0,0.12);
  border-radius: 999px;
  background: var(--card-bg);
  color: var(--text-main);
  padding: 9px 12px;
  font-size: 0.82rem;
  font-weight: 800;
}
/* Card */
.card {  background: var(--card-bg);  border-radius: var(--radius-lg);  padding: var(--spacing-5);  margin: var(--spacing-4) var(--spacing-5);  box-shadow: var(--shadow-subtle);  transition: transform var(--transition-fast); }
/* Inputs */
.input-group {  display: flex;  flex-direction: column;  gap: var(--spacing-2);  margin-bottom: var(--spacing-4);  position: relative; }
.input-group label {  font-size: 0.875rem;  color: var(--text-muted);  font-weight: 500; }
.input-field {  width: 100%;  padding: var(--spacing-4);  border-radius: var(--radius-md);  border: 1px solid rgba(0,0,0,0.1);  background: var(--bg-color);  font-size: 1rem;  transition: border-color var(--transition-fast);  appearance: none; }
.input-field:focus {  outline: none;  border-color: var(--accent-color); }
.clearable-wrap {
  position: relative;
  width: 100%;
}
.clearable-input {
  padding-right: 40px;
}
.clear-input-btn {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid rgba(0, 0, 0, 0.12);
  background: #f3f4f6;
  color: #6b7280;
  font-size: 0.8rem;
  line-height: 1;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 0;
}
.clear-input-btn.visible {
  display: flex;
}
/* Buttons */
.btn-primary {  display: block;  width: calc(100% - var(--spacing-5) * 2);  margin: var(--spacing-5) auto;  padding: var(--spacing-4);  background: var(--accent-color);  color: #fff;  border-radius: 100px;  font-size: 1.1rem;  font-weight: 500;  text-align: center;  transition: transform var(--transition-fast), background var(--transition-fast);  box-shadow: 0 4px 14px rgba(var(--accent-color-rgb), 0.2); }
.btn-primary:active {  transform: scale(0.97); }
.btn-secondary {
  display: block;
  width: calc(100% - var(--spacing-5) * 2);
  margin: 0 auto var(--spacing-5);
  padding: var(--spacing-3);
  background: transparent;
  color: var(--text-muted);
  border-radius: 100px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  font-size: 0.95rem;
  text-align: center;
}
.btn-secondary.hidden {
  display: none;
}
/* Quantity Control */
.quantity-control {  display: flex;  align-items: center;  justify-content: space-between;  background: var(--bg-color);  border-radius: var(--radius-md);  padding: var(--spacing-1);  border: 1px solid rgba(0,0,0,0.1); }
.qty-btn {  width: 44px;  height: 44px;  display: flex;  align-items: center;  justify-content: center;  font-size: 1.5rem;  color: var(--accent-color);  border-radius: var(--radius-sm);  background: var(--card-bg); }
.qty-btn:active {  background: rgba(0,0,0,0.1); }
.qty-value {  font-size: 1.2rem;  font-weight: 500;  min-width: 40px;  text-align: center; }
.qty-input { width: 56px; text-align: center; border: none; background: transparent; font-size: 1.1rem; font-weight: 500; color: var(--text-main); }
.qty-input:focus { outline: none; }
/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 250;
  display: flex;
  align-items: flex-end;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition:
    opacity var(--transition-smooth),
    visibility 0s linear var(--transition-smooth);
  padding: 12px 10px calc(var(--bottom-nav-space) + 8px);
}
.modal-overlay.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition: opacity var(--transition-smooth);
}
.modal-content {
  background: var(--bg-color);
  width: 100%;
  max-height: calc(100dvh - var(--bottom-nav-space) - 32px);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-xl);
  padding: var(--spacing-6) var(--spacing-5);
  transform: translateY(calc(100% + var(--bottom-nav-space)));
  transition: transform var(--transition-smooth);
  box-shadow: var(--shadow-modal);
}
.modal-overlay.active .modal-content {  transform: translateY(0); }
.modal-handle {  width: 40px;  height: 4px;  background: #E5E5EA;  border-radius: 2px;  margin: 0 auto var(--spacing-6); }
/* Item List */
.bill-item {  display: flex;  flex-direction: column;  gap: var(--spacing-2);  padding-bottom: var(--spacing-4);  margin-bottom: var(--spacing-4);  border-bottom: 1px solid rgba(0,0,0,0.05); }
.bill-item:last-child {  border-bottom: none;  margin-bottom: 0;  padding-bottom: 0; }
.item-header {  display: flex;  justify-content: space-between;  align-items: center; }
.item-name-row {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-2);
}
.product-input-wrap { position: relative; flex: 1; }
.product-name-input { width: 100%; }
.product-stock-hint {
  min-height: 18px;
  margin-top: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
}
.product-stock-hint.stock-ok {
  color: #1f7a4d;
}
.product-stock-hint.stock-warning {
  color: #9a6a00;
}
.product-stock-hint.stock-danger {
  color: var(--danger-color);
}
.item-remove {  color: var(--danger-color);  font-size: 0.8rem;  padding: var(--spacing-2); }
.item-total {  font-weight: 600;  font-size: 1.1rem; }
.item-name-row label,
.item-field-block label {
  display: block;
  margin-bottom: var(--spacing-2);
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}
.item-controls-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--spacing-3);
  margin-top: var(--spacing-4);
}
.item-field-block {
  min-width: 0;
}
.item-unit-select {
  min-width: 0;
}
.customer-dropdown {  position: absolute;  top: 100%;  left: 0;  width: 100%;  background: var(--bg-color);  border: 1px solid rgba(0,0,0,0.1);  border-radius: var(--radius-md);  max-height: 200px;  overflow-y: auto;  z-index: 10;  box-shadow: var(--shadow-subtle);  display: none; }
.customer-dropdown.active {  display: block; }
.dropdown-item {  width: 100%;  text-align: left;  background: transparent;  border: none;  padding: var(--spacing-3) var(--spacing-4);  border-bottom: 1px solid rgba(0,0,0,0.05);  font: inherit;  color: var(--text-main); }
.dropdown-item:last-child { border-bottom: none; }
.dropdown-item:active { background: var(--card-bg); }
.dropdown-create-item {
  color: var(--accent-color);
  font-weight: 700;
  background: rgba(var(--accent-color-rgb), 0.06);
}

@media (max-width: 430px) {
  .top-header {
    min-height: 58px;
    padding: 10px 14px;
  }

  .top-header h1 {
    min-width: 0;
    font-size: 1.05rem;
    line-height: 1.15;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .top-header .logo {
    height: 22px;
  }

  .header-actions {
    flex: 0 0 auto;
    gap: 6px;
  }

  .header-tool-btn,
  .logout-btn {
    min-height: 34px;
    padding: 7px 10px;
    font-size: 0.75rem;
  }

  .icon-btn {
    width: 36px;
    height: 36px;
  }

  .card {
    margin: 10px 12px;
    padding: 14px;
    border-radius: 12px;
  }

  .input-group {
    gap: 6px;
    margin-bottom: 12px;
  }

  .input-group label,
  .item-name-row label,
  .item-field-block label {
    font-size: 0.8rem;
  }

  .input-field {
    min-height: 44px;
    padding: 10px 12px;
    border-radius: 10px;
    font-size: 16px;
    line-height: 1.25;
  }

  .btn-primary {
    width: calc(100% - 24px);
    min-height: 48px;
    margin: 14px auto;
    padding: 12px 16px;
    font-size: 1rem;
  }

  .btn-secondary {
    width: calc(100% - 24px);
    margin-bottom: 14px;
    padding: 11px 14px;
    font-size: 0.9rem;
  }

  .bill-item {
    gap: 10px;
    padding-bottom: 14px;
    margin-bottom: 14px;
  }

  .item-header {
    align-items: flex-start;
    gap: 8px;
  }

  .item-total {
    flex: 0 0 auto;
    font-size: 1rem;
    white-space: nowrap;
  }

  .item-controls-grid {
    gap: 10px;
    margin-top: 10px;
  }

  .qty-btn {
    width: 40px;
    height: 40px;
  }

  .qty-input {
    width: 48px;
    font-size: 16px;
  }

  .modal-overlay {
    padding: 10px 8px calc(var(--bottom-nav-space) + 6px);
  }

  .modal-content {
    max-height: calc(100dvh - var(--bottom-nav-space) - 24px);
    padding: 18px 14px;
    border-radius: 18px 18px 14px 14px;
  }

  .modal-handle {
    margin-bottom: 14px;
  }
}

@media (min-width: 900px) {
  .top-header {
    padding: 18px 28px;
    background: rgba(255, 255, 255, 0.92);
  }

  .top-header h1 {
    font-size: 1.35rem;
  }

  .top-header .logo {
    height: 30px;
  }

  .card {
    width: calc(100% - 48px);
    max-width: 1120px;
    margin: 18px auto;
    padding: 22px;
    border: 1px solid rgba(0,0,0,0.05);
    border-radius: var(--radius-md);
    background: #fff;
    box-shadow: 0 10px 28px rgba(15,23,42,0.06);
  }

  .input-field {
    padding: 12px 14px;
    font-size: 0.95rem;
  }

  .btn-primary,
  .btn-secondary {
    width: calc(100% - 48px);
    max-width: 1120px;
  }

  .modal-overlay {
    align-items: center;
    justify-content: center;
    padding: 24px;
  }

  .modal-content {
    max-width: 560px;
    max-height: calc(100dvh - 48px);
    border-radius: var(--radius-lg);
    transform: translateY(18px) scale(0.98);
    box-shadow: 0 24px 70px rgba(15,23,42,0.24);
  }

  .modal-overlay.active .modal-content {
    transform: translateY(0) scale(1);
  }

  .modal-handle {
    display: none;
  }

  .customer-dropdown {
    max-height: 260px;
  }
}