/**
 * PaldoFlower — 공통 UI 컴포넌트 (P7-03)
 * Airbnb 레이아웃 + DESIGN-PALDO 토큰
 * 사용: class="btn btn--primary" 또는 helpers ui_button()
 */

/* -------------------------------------------------------------------------- */
/* Button                                                                     */
/* -------------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  min-height: 48px;
  padding: 14px 24px;
  border-radius: var(--radius-sm);
  font: var(--text-button-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn--sm {
  min-height: 40px;
  padding: 10px 18px;
  font-size: 14px;
}

.btn--lg {
  min-height: 52px;
  padding: 16px 28px;
}

.btn--block {
  width: 100%;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-on-primary);
}

.btn--primary:hover {
  background: var(--color-primary-active);
  color: var(--color-on-primary);
  text-decoration: none;
}

.btn--secondary {
  background: var(--color-canvas);
  color: var(--color-ink);
  border-color: var(--color-ink);
}

.btn--secondary:hover {
  background: var(--color-surface-soft);
  color: var(--color-ink);
  text-decoration: none;
}

.btn--ghost {
  background: transparent;
  color: var(--color-ink);
  border-color: transparent;
}

.btn--ghost:hover {
  background: var(--color-surface-soft);
  text-decoration: none;
}

.btn--danger {
  background: var(--color-error);
  color: var(--color-on-primary);
}

.btn--danger:hover {
  background: #a82d10;
  color: var(--color-on-primary);
  text-decoration: none;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.filter-quick .btn.is-active,
.btn.btn--secondary.is-active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

/* -------------------------------------------------------------------------- */
/* Card                                                                       */
/* -------------------------------------------------------------------------- */

.card,
.data-card,
.form-card {
  background: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-card);
}

.card--flat,
.data-card--flat {
  box-shadow: none;
}

.card + .card,
.data-card + .data-card,
.form-card + .form-card {
  margin-top: var(--space-lg);
}

.data-card {
  margin-bottom: var(--space-lg);
}

.card__header,
.data-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-base);
  margin-bottom: var(--space-base);
}

.card__title,
.data-card__title {
  font: var(--text-title-md);
  margin: 0;
}

.data-card__header .data-card__title,
.card__header .card__title {
  margin: 0;
}

.card__body,
.data-card__body {
  color: var(--color-body);
}

.card__footer {
  margin-top: var(--space-base);
  padding-top: var(--space-base);
  border-top: 1px solid var(--color-hairline-soft);
}

.data-card__empty,
.card__empty {
  color: var(--color-muted);
  margin: 0;
}

.stat-card {
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-hairline);
  box-shadow: var(--shadow-card);
  background: var(--color-canvas);
}

.link-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-hairline-soft);
  background: var(--color-canvas);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-card);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.link-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.link-card strong {
  font: var(--text-title-sm);
  color: var(--color-ink);
}

.link-card span {
  font: var(--text-body-sm);
  color: var(--color-muted);
}

/* -------------------------------------------------------------------------- */
/* Form                                                                       */
/* -------------------------------------------------------------------------- */

.form-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-base);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font: var(--text-body-sm);
  font-weight: 600;
  color: var(--color-ink);
}

label.form-label {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  font-weight: 400;
}

.form-label--required::after {
  content: ' *';
  color: var(--color-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0 var(--space-base);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  font: var(--text-body-md);
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-canvas);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input,
.form-select {
  height: 48px;
}

.form-textarea {
  min-height: 96px;
  padding: var(--space-sm) var(--space-base);
  resize: vertical;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-ink);
  box-shadow: 0 0 0 1px var(--color-ink);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background: var(--color-surface-soft);
  color: var(--color-muted);
  cursor: not-allowed;
}

.form-input--xs { width: 4.5rem; }
.form-input--sm { width: 6.5rem; }

.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  font: var(--text-body-sm);
  cursor: pointer;
}

.form-inline {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.form-inline--grow {
  width: 100%;
}

.form-inline--grow .form-input {
  flex: 1;
  min-width: 0;
}

.form-hint {
  color: var(--color-muted);
  font-size: 13px;
  margin: 0;
}

.form-hint--ok { color: var(--color-success); }
.form-hint--error { color: var(--color-error); }

.form-grid {
  display: grid;
  gap: var(--space-base);
}

@media (min-width: 600px) {
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }

  .form-label--span2,
  .form-group--span2 {
    grid-column: span 2;
  }
}

/* -------------------------------------------------------------------------- */
/* Table                                                                      */
/* -------------------------------------------------------------------------- */

.table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.data-table th,
.data-table td {
  padding: var(--space-sm) var(--space-base);
  border-bottom: 1px solid var(--color-hairline-soft);
  text-align: left;
  vertical-align: middle;
}

.data-table th {
  color: var(--color-muted);
  font-weight: 600;
  white-space: nowrap;
}

.data-table tbody tr:hover {
  background: var(--color-surface-soft);
}

.data-table--compact th,
.data-table--compact td {
  padding: var(--space-xs) var(--space-sm);
}

.data-table--bordered {
  border: 1px solid var(--color-hairline-soft);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.data-table--bordered th,
.data-table--bordered td {
  border-right: 1px solid var(--color-hairline-soft);
}

.data-table--bordered th:last-child,
.data-table--bordered td:last-child {
  border-right: none;
}

.data-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* -------------------------------------------------------------------------- */
/* Alert & Badge                                                              */
/* -------------------------------------------------------------------------- */

.alert {
  padding: var(--space-base);
  border-radius: var(--radius-sm);
  font: var(--text-body-sm);
  margin-bottom: var(--space-base);
  border: 1px solid transparent;
}

.alert--error {
  background: #fff5f5;
  color: var(--color-error);
  border-color: #f5c4ce;
}

.alert--success {
  background: #f0faf5;
  color: var(--color-success);
  border-color: #c5e6d5;
}

.alert--info {
  background: var(--color-primary-soft);
  color: var(--color-primary);
  border-color: var(--color-primary-disabled);
}

.alert__list {
  margin: 0;
  padding-left: 1.25rem;
}

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--color-surface-strong);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-body);
  line-height: 1.4;
}

.badge--primary {
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.badge--success {
  background: #e8f5e9;
  color: var(--color-success);
}

.badge--warning {
  background: #fff8e1;
  color: #b8860b;
}

.badge--muted {
  background: var(--color-surface-strong);
  color: var(--color-muted);
}

/* -------------------------------------------------------------------------- */
/* Lists                                                                      */
/* -------------------------------------------------------------------------- */

.attachment-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.attachment-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-base);
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-hairline-soft);
  font: var(--text-body-sm);
}

.attachment-list li:last-child {
  border-bottom: none;
}