/* DentHub — Components CSS */

/* ── 버튼 ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  font-family: inherit;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), box-shadow var(--transition),
              transform var(--transition);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.btn:active:not(:disabled) { transform: scale(0.98); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
}

.btn-secondary {
  background: var(--color-secondary);
  color: #fff;
  border-color: var(--color-secondary);
}
.btn-secondary:hover:not(:disabled) {
  background: #259999;
  border-color: #259999;
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover:not(:disabled) {
  background: var(--color-primary-light);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
  background: var(--color-bg);
  color: var(--color-text);
}

.btn-danger {
  background: var(--color-error);
  color: #fff;
  border-color: var(--color-error);
}
.btn-danger:hover:not(:disabled) { background: #dc2626; }

.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 12px 24px; font-size: 16px; }
.btn-full { width: 100%; }

.btn-loading {
  position: relative;
  color: transparent !important;
}
.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* ── 카드 ── */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 20px;
  transition: box-shadow var(--transition);
}
.card:hover { box-shadow: var(--shadow-md); }

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.card-title { font-size: 16px; font-weight: 600; }
.card-body { }
.card-footer {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: 8px;
  justify-content: flex-end;
}

/* ── 폼 ── */
.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.form-label .required {
  color: var(--color-error);
  margin-left: 2px;
}

.form-input,
.form-select,
.form-textarea,
.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--color-border);
  border-radius: 10px;
  font-size: 15px;
  color: var(--color-text);
  background: var(--color-surface);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  box-sizing: border-box;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus,
.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(27,111,168,0.10);
}
.form-input.error,
.form-select.error,
.form-textarea.error,
.form-control.error {
  border-color: var(--color-error);
}
.form-input::placeholder,
.form-control::placeholder { color: var(--color-text-secondary); opacity: 0.6; }

.form-textarea,
.form-control textarea,
textarea.form-control { resize: vertical; min-height: 100px; }
.form-select { appearance: none; cursor: pointer; }

.form-error {
  display: block;
  font-size: 12px;
  color: var(--color-error);
  margin-top: 4px;
}
.form-hint {
  display: block;
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 768px) { .form-row { grid-template-columns: 1fr; } }

/* ── 모달 ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-content {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  transform: translateY(20px);
  transition: transform var(--transition);
}
.modal-overlay.open .modal-content { transform: translateY(0); }

.modal-header {
  padding: 20px 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.modal-title { font-size: 18px; font-weight: 700; }
.modal-close {
  background: none;
  border: none;
  font-size: 20px;
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}
.modal-body { padding: 16px 24px; }
.modal-footer {
  padding: 0 24px 20px;
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ── 토스트 ── */
.toast-container {
  position: fixed;
  top: calc(var(--header-height) + 12px);
  right: 16px;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 240px;
  max-width: 360px;
  pointer-events: auto;
  animation: slideIn 0.3s ease;
}
.toast.removing { animation: slideOut 0.3s ease forwards; }

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

@keyframes slideIn {
  from { transform: translateX(120%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
@keyframes slideOut {
  from { transform: translateX(0); opacity: 1; }
  to { transform: translateX(120%); opacity: 0; }
}

/* ── 배지 ── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-primary { background: var(--color-primary-light); color: var(--color-primary); }
.badge-secondary { background: #E0F7F7; color: var(--color-secondary); }
.badge-success { background: #D1FAE5; color: var(--color-success); }
.badge-warning { background: #FEF3C7; color: #B45309; }
.badge-error { background: #FEE2E2; color: var(--color-error); }
.badge-gray { background: var(--color-bg); color: var(--color-text-secondary); border: 1px solid var(--color-border); }

/* 광고 배지 */
.badge-ad {
  background: var(--color-ad-badge);
  color: #fff;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 3px;
}

/* ── 스켈레톤 ── */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text { height: 14px; margin-bottom: 8px; border-radius: 3px; }
.skeleton-title { height: 22px; width: 60%; margin-bottom: 12px; }
.skeleton-card { height: 120px; border-radius: var(--radius-md); }
.skeleton-avatar { width: 40px; height: 40px; border-radius: 50%; }

/* ── 탭 ── */
.tabs {
  display: flex;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 24px;
  gap: 0;
  overflow-x: auto;
}

.tab-item {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
}
.tab-item:hover { color: var(--color-primary); }
.tab-item.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ── 빈 상태 ── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-text-secondary);
}
.empty-state-icon {
  font-size: 48px;
  margin-bottom: 16px;
  opacity: 0.4;
}
.empty-state h3 {
  font-size: 17px;
  color: var(--color-text);
  margin-bottom: 8px;
}
.empty-state p { font-size: 14px; }

/* ── 구분선 ── */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 20px 0;
}

/* ── 알림 박스 ── */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.alert-error { background: #FEE2E2; color: #991B1B; border: 1px solid #FECACA; }
.alert-success { background: #D1FAE5; color: #065F46; border: 1px solid #A7F3D0; }
.alert-warning { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; }
.alert-info { background: var(--color-primary-light); color: var(--color-primary-dark); border: 1px solid #BAE0F7; }

/* ── 페이지네이션 ── */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 4px;
  margin-top: 32px;
}
.pagination-btn {
  width: 36px; height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.pagination-btn:hover { background: var(--color-primary-light); color: var(--color-primary); }
.pagination-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.pagination-btn:disabled { opacity: 0.4; cursor: not-allowed; }