/* ============================================================
   OrderFit B2B UI Components
   SPEC_P4_072 | 11 Components: Button, Input, Table, Modal,
   Toast, Card, Badge, Tabs, Pagination, Tooltip, Empty State
   ============================================================ */

/* === 1. Button === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-family);
  font-weight: var(--font-medium);
  border: 1px solid transparent;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn:hover { text-decoration: none; }

/* Sizes */
.btn-sm {
  height: 32px;
  font-size: var(--text-sm);
  padding: 0 var(--space-4);
}

.btn-md, .btn {
  height: 40px;
  font-size: var(--text-base);
  padding: 0 var(--space-6);
}

.btn-lg {
  height: 48px;
  font-size: var(--text-md);
  padding: 0 var(--space-8);
}

/* Variants */
.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
}
.btn-primary:hover { background: var(--color-primary-dark); }
.btn-primary:active { background: #0D47A1; }

.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-secondary:hover { background: var(--color-primary-light); }

.btn-danger {
  background: var(--color-error);
  color: var(--color-white);
}
.btn-danger:hover { background: #D32F2F; }

.btn-outline {
  background: transparent;
  color: var(--color-gray-800);
  border-color: var(--color-gray-400);
}
.btn-outline:hover { background: var(--color-gray-100); border-color: var(--color-gray-600); }

.btn-text {
  background: transparent;
  color: var(--color-primary);
  border: none;
  padding: 0 var(--space-2);
}
.btn-text:hover { background: var(--color-primary-light); }

.btn-success {
  background: var(--color-success);
  color: var(--color-white);
}
.btn-success:hover { background: #388E3C; }

.btn:disabled, .btn.disabled {
  background: #E0E0E0;
  color: #9E9E9E;
  border-color: transparent;
  cursor: not-allowed;
  pointer-events: none;
}

.btn .material-icons {
  font-size: 18px;
}

/* === 2. Input / Form === */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-800);
  margin-bottom: var(--space-1);
}

.form-label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: var(--text-base);
  color: var(--color-black);
  background: var(--color-white);
  border: 1px solid var(--color-gray-400);
  border-radius: var(--border-radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(25, 118, 210, 0.15);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input.is-error,
.form-select.is-error,
.form-textarea.is-error {
  border-color: var(--color-error);
}

.form-input.is-error:focus {
  box-shadow: 0 0 0 3px rgba(244, 67, 54, 0.15);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  margin-top: var(--space-1);
}

.form-hint {
  font-size: var(--text-xs);
  color: var(--color-gray-600);
  margin-top: var(--space-1);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23757575' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-check {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-row {
  display: flex;
  gap: var(--space-4);
}

.form-row .form-group {
  flex: 1;
}

/* Input with icon */
.input-group {
  position: relative;
}

.input-group .form-input {
  padding-left: 40px;
}

.input-group__icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gray-600);
}

.input-group__icon .material-icons {
  font-size: 20px;
}

/* === 3. Table === */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--border-radius-md);
  border: 1px solid var(--color-gray-200);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
}

.table th {
  background: var(--color-gray-100);
  font-weight: var(--font-medium);
  color: var(--color-gray-800);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  white-space: nowrap;
  border-bottom: 2px solid var(--color-gray-200);
}

.table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-gray-200);
  color: var(--color-black);
  vertical-align: middle;
}

.table tbody tr:last-child td {
  border-bottom: none;
}

.table-striped tbody tr:nth-child(even) {
  background: var(--color-gray-100);
}

.table-hover tbody tr:hover {
  background: var(--color-primary-light);
}

.table th.sortable {
  cursor: pointer;
  user-select: none;
}

.table th.sortable:hover {
  background: var(--color-gray-200);
}

.table th.sortable::after {
  content: 'unfold_more';
  font-family: 'Material Icons';
  font-size: 16px;
  vertical-align: middle;
  margin-left: 4px;
  color: var(--color-gray-400);
}

.table th.sort-asc::after {
  content: 'arrow_upward';
  color: var(--color-primary);
}

.table th.sort-desc::after {
  content: 'arrow_downward';
  color: var(--color-primary);
}

.table .text-right { text-align: right; }
.table .text-center { text-align: center; }

/* === 4. Modal === */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal-overlay.active {
  display: flex;
}

.modal {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: modalFadeIn 200ms ease;
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--color-gray-200);
}

.modal-header h3 {
  font-size: var(--text-lg);
  margin: 0;
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--color-gray-600);
  cursor: pointer;
  border-radius: var(--border-radius-sm);
}

.modal-close:hover {
  background: var(--color-gray-100);
}

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-gray-200);
}

.modal-lg { max-width: 720px; }
.modal-sm { max-width: 360px; }

/* === 5. Toast === */
.toast-container {
  position: fixed;
  top: calc(var(--header-height) + var(--space-4));
  right: var(--space-4);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 400px;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-md);
  font-size: var(--text-sm);
  color: var(--color-white);
  animation: toastSlideIn 300ms ease;
  min-width: 280px;
}

.toast.removing {
  animation: toastSlideOut 200ms ease forwards;
}

@keyframes toastSlideIn {
  from { opacity: 0; transform: translateX(100%); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes toastSlideOut {
  from { opacity: 1; transform: translateX(0); }
  to { opacity: 0; transform: translateX(100%); }
}

.toast-success { background: var(--color-success); }
.toast-error { background: var(--color-error); }
.toast-warning { background: #E65100; }
.toast-info { background: var(--color-info); }

.toast__icon .material-icons {
  font-size: 20px;
}

.toast__message {
  flex: 1;
  line-height: 1.4;
}

.toast__close {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  opacity: 0.7;
  padding: 0;
  display: flex;
}

.toast__close:hover { opacity: 1; }

.toast__close .material-icons {
  font-size: 18px;
}

/* === 6. Card === */
.card {
  background: var(--color-white);
  border-radius: var(--border-radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-gray-200);
  overflow: hidden;
}

.card-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h4 {
  margin: 0;
  font-size: var(--text-md);
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-gray-200);
  background: var(--color-gray-100);
}

.card-clickable {
  cursor: pointer;
  transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.card-clickable:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Dashboard stat card */
.stat-card {
  text-align: center;
  padding: var(--space-5);
}

.stat-card__value {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin-top: var(--space-1);
}

/* === 7. Badge === */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--border-radius-full);
  white-space: nowrap;
  line-height: 1.5;
}

.badge-pending {
  background: var(--status-pending-bg);
  color: var(--status-pending-text);
}

.badge-confirmed {
  background: var(--status-confirmed-bg);
  color: var(--status-confirmed-text);
}

.badge-shipped {
  background: var(--status-shipped-bg);
  color: var(--status-shipped-text);
}

.badge-cancelled {
  background: var(--status-cancelled-bg);
  color: var(--status-cancelled-text);
}

.badge-return-requested {
  background: var(--status-return-requested-bg);
  color: var(--status-return-requested-text);
}

.badge-return-completed {
  background: var(--status-return-completed-bg);
  color: var(--status-return-completed-text);
}

.badge-active {
  background: var(--color-success-light);
  color: var(--color-success);
}

.badge-inactive {
  background: var(--color-gray-200);
  color: var(--color-gray-600);
}

.badge-info {
  background: var(--color-info-light);
  color: var(--color-info);
}

.badge-warning {
  background: var(--color-warning-light);
  color: #E65100;
}

/* FIX-319(P2_058 #29): 문의 상태 배지 — 스펙 색상 (대기 #FFF3E0 / 완료 #E8F5E9) */
.badge-inquiry-pending {
  background: #FFF3E0;
  color: #E65100;
}

.badge-inquiry-answered {
  background: #E8F5E9;
  color: #2E7D32;
}

/* === 8. Tabs === */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-gray-200);
  gap: 0;
  overflow-x: auto;
}

.tab-item {
  padding: var(--space-3) var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-gray-600);
  text-decoration: none;
  /* .tab-item is often used on <button>; reset UA button styles for consistent tabs UI. */
  background: transparent;
  border: 0;
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.tab-item:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.tab-item:focus {
  outline: none;
}

.tab-item:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.tab-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
  padding: var(--space-5) 0;
}

.tab-content.active {
  display: block;
}

/* === 9. Pagination === */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  padding: var(--space-4) 0;
}

.pagination__info {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin-right: var(--space-4);
}

.page-item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--space-2);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--border-radius-sm);
  font-size: var(--text-sm);
  color: var(--color-gray-800);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  background: var(--color-white);
}

.page-item:hover {
  background: var(--color-gray-100);
  border-color: var(--color-gray-400);
  text-decoration: none;
}

.page-item.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.page-item.disabled {
  color: var(--color-gray-400);
  cursor: not-allowed;
  pointer-events: none;
}

.page-item .material-icons {
  font-size: 18px;
}

/* === 10. Tooltip === */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-1) var(--space-2);
  background: var(--color-gray-800);
  color: var(--color-white);
  font-size: var(--text-xs);
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  margin-bottom: 4px;
}

.tooltip:hover::after {
  opacity: 1;
}

/* === 11. Empty State === */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-12) var(--space-6);
  text-align: center;
}

.empty-state__icon {
  font-size: 64px;
  color: var(--color-gray-400);
  margin-bottom: var(--space-4);
}

.empty-state__icon .material-icons {
  font-size: inherit;
}

.empty-state__title {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-gray-800);
  margin-bottom: var(--space-2);
}

.empty-state__message {
  font-size: var(--text-sm);
  color: var(--color-gray-600);
  margin-bottom: var(--space-6);
  max-width: 360px;
}

/* === Search & Filter Bar === */
.search-filter {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}

.search-filter__input {
  flex: 1;
  min-width: 200px;
}

.search-filter__select {
  min-width: 140px;
}

@media (max-width: 767px) {
  .search-filter {
    flex-direction: column;
  }

  .search-filter__input,
  .search-filter__select {
    width: 100%;
    min-width: auto;
  }

  .toast-container {
    left: var(--space-4);
    right: var(--space-4);
    max-width: none;
  }
}

/* === Loading Overlay === */
.loading-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,0.7);
  z-index: 250;
  align-items: center;
  justify-content: center;
}

.loading-overlay.active {
  display: flex;
}

.loading-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* === Confirmation Dialog (inside modal) === */
.confirm-dialog__icon {
  text-align: center;
  margin-bottom: var(--space-4);
}

.confirm-dialog__icon .material-icons {
  font-size: 48px;
  color: var(--color-warning);
}

.confirm-dialog__message {
  text-align: center;
  font-size: var(--text-md);
  color: var(--color-gray-800);
  margin-bottom: var(--space-2);
}

.confirm-dialog__sub {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-gray-600);
}

/* FIX-224(QC v2.1.0): PC 반응형 카드 그리드 유틸리티
   모바일 1컬럼 → PC 다컬럼. 목록/카드 화면(MVP_012/015/031/032/034/035, P2_049/051)에서
   컨테이너에 class="card-grid" 적용 시 PC에서 카드가 그리드로 배치됨. */
.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 768px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .card-grid--3 { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 1200px) {
  .card-grid--wide { grid-template-columns: repeat(3, 1fr); }
}


/* ============================================================
   FIX-320: 반응형 표 → 카드 전환 유틸 (MVP_012#17 · 015#17 · 034#11 · P2_049#22 · P2_051#25)
   테이블에 .table-cards 를 주고 각 <td> 에 data-label 을 넣으면
   모바일(≤768px)에서 행이 카드 형태로 재배치된다.
   ============================================================ */
@media (max-width: 768px) {
  .table-cards thead { display: none; }
  .table-cards, .table-cards tbody, .table-cards tr, .table-cards td { display: block; width: 100%; }
  .table-cards tr {
    border: 1px solid var(--color-border);
    border-radius: 10px;
    margin-bottom: 10px;
    padding: 10px 12px;
    background: #fff;
  }
  .table-cards td {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    border: none;
    padding: 6px 0;
    text-align: right;
    white-space: normal;
  }
  .table-cards td::before {
    content: attr(data-label);
    font-size: 12px;
    color: var(--color-text-secondary);
    text-align: left;
    flex-shrink: 0;
  }
  .table-cards td:empty { display: none; }
}

/* FIX-319(P4_113 #6): 비밀번호 강도 표시기 — utils.js 가 입력란 뒤에 삽입한다 */
.pw-strength { margin-top: 6px; }
.pw-strength__bar { height: 4px; border-radius: 2px; background: #ECEFF1; overflow: hidden; }
.pw-strength__bar span { display: block; height: 100%; width: 0; transition: width .2s, background .2s; }
.pw-strength__bar span.weak { background: #E53935; }
.pw-strength__bar span.fair { background: #FB8C00; }
.pw-strength__bar span.strong { background: #2E7D32; }
.pw-strength__label { margin-top: 4px; font-size: 12px; color: var(--color-text-secondary); }
.pw-strength__label.weak { color: #E53935; }
.pw-strength__label.fair { color: #EF6C00; }
.pw-strength__label.strong { color: #2E7D32; }