/**
 * TEKAN ADS — Customer Segmentation Center
 */

#page-segments.seg-page .ds-root {
  display: flex;
  flex-direction: column;
  gap: var(--ds-space-2);
  width: 100%;
  max-width: none;
}

.seg-header h1 {
  margin: 0;
  font-size: var(--ds-text-h1-size);
  font-weight: var(--ds-text-h1-weight);
  color: var(--ds-color-text);
}

.seg-header__sub {
  margin: 0.35rem 0 0;
  color: var(--ds-color-text-muted);
  font-size: var(--ds-text-body-size);
}

/* ─── Action bar ─── */
.seg-action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-1);
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-card);
  background: var(--ds-color-surface);
}

.seg-action-bar__left,
.seg-action-bar__right {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-1);
  align-items: center;
}

.seg-action-bar__search {
  position: relative;
  min-width: 220px;
}

.seg-action-bar__search input {
  width: 100%;
  min-width: 220px;
  padding-inline-start: 2.25rem;
}

.seg-action-bar__search i {
  position: absolute;
  inset-inline-start: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ds-color-text-muted);
  pointer-events: none;
}

/* ─── Stats ─── */
.seg-stats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--ds-space-2);
}

.seg-stats .ds-stat-card {
  background: var(--ds-color-surface);
  border: 1px solid var(--ds-color-border);
  box-shadow: none;
  animation: segFadeIn 0.35s ease both;
}

@keyframes segFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 1200px) {
  .seg-stats { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .seg-stats { grid-template-columns: repeat(2, 1fr); }
}

/* ─── Category cards grid ─── */
.seg-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--ds-space-2);
}

.seg-cat-card {
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-card);
  background: var(--ds-color-surface);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
  animation: segFadeIn 0.4s ease both;
  cursor: default;
}

.seg-cat-card:hover {
  border-color: var(--ds-color-border-strong, rgba(255,255,255,0.12));
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.22);
  transform: translateY(-2px);
}

.seg-cat-card.is-active {
  border-color: var(--ds-color-primary);
  box-shadow: 0 0 0 1px var(--ds-color-primary-muted);
}

.seg-cat-card__head {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.seg-cat-card__icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--ds-radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #fff;
}

.seg-cat-card__title {
  margin: 0;
  font-size: var(--ds-text-section-size);
  font-weight: var(--ds-text-section-weight);
  color: var(--ds-color-text);
}

.seg-cat-card__desc {
  margin: 0.2rem 0 0;
  font-size: var(--ds-text-caption-size);
  color: var(--ds-color-text-muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.seg-cat-card__meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: var(--ds-text-caption-size);
  color: var(--ds-color-text-muted);
}

.seg-cat-card__meta strong {
  color: var(--ds-color-text-secondary);
  font-weight: 560;
}

.seg-cat-card__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.5rem;
  border-top: 1px solid var(--ds-color-divider);
}

/* ─── Empty state ─── */
.seg-empty {
  text-align: center;
  padding: 3.5rem 1.5rem;
  border: 1px dashed var(--ds-color-border);
  border-radius: var(--ds-radius-card);
  color: var(--ds-color-text-muted);
}

.seg-empty__icon {
  width: 3.5rem;
  height: 3.5rem;
  margin: 0 auto 1rem;
  border-radius: var(--ds-radius-card);
  background: var(--ds-color-secondary-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
}

/* ─── Future placeholder ─── */
.seg-future-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--ds-space-2);
  padding: 1rem 1.25rem;
  border: 1px dashed var(--ds-color-border);
  border-radius: var(--ds-radius-card);
  background: var(--ds-color-bg-subtle);
}

.seg-future-banner p {
  margin: 0;
  font-size: var(--ds-text-caption-size);
  color: var(--ds-color-text-muted);
}

/* ─── Workspace ─── */
.seg-workspace {
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-card);
  background: var(--ds-color-surface);
  overflow: hidden;
  animation: segFadeIn 0.3s ease;
}

.seg-workspace__head {
  display: flex;
  flex-wrap: wrap;
  gap: var(--ds-space-2);
  align-items: flex-start;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--ds-color-divider);
  background: var(--ds-color-bg-subtle);
}

.seg-workspace__identity {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  min-width: 0;
}

.seg-workspace__icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--ds-radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}

.seg-workspace__title {
  margin: 0;
  font-size: var(--ds-text-section-size);
  font-weight: var(--ds-text-section-weight);
}

.seg-workspace__desc {
  margin: 0.25rem 0 0;
  font-size: var(--ds-text-caption-size);
  color: var(--ds-color-text-muted);
}

.seg-workspace__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.5rem;
  font-size: var(--ds-text-caption-size);
  color: var(--ds-color-text-muted);
}

.seg-workspace__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.seg-workspace__body {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  min-height: 420px;
}

@media (max-width: 1100px) {
  .seg-workspace__body {
    grid-template-columns: 1fr;
  }
  .seg-transfer-col { display: none; }
}

.seg-panel {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-inline-end: 1px solid var(--ds-color-divider);
}

.seg-panel:last-child {
  border-inline-end: none;
}

.seg-panel__head {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--ds-color-divider);
}

.seg-panel__head h3 {
  margin: 0 0 0.75rem;
  font-size: var(--ds-text-card-title-size);
  font-weight: var(--ds-text-card-title-weight);
  color: var(--ds-color-text-secondary);
}

.seg-panel__filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.seg-panel__filters select,
.seg-panel__filters input {
  flex: 1;
  min-width: 100px;
  font-size: var(--ds-text-caption-size);
}

.seg-panel__bulk {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.5rem;
}

.seg-panel__table-wrap {
  flex: 1;
  overflow: auto;
  max-height: 380px;
}

.seg-panel table {
  width: 100%;
  font-size: var(--ds-text-caption-size);
}

.seg-panel th {
  position: sticky;
  top: 0;
  background: var(--ds-color-bg-subtle);
  z-index: 1;
  padding: 0.6rem 0.75rem;
  text-align: right;
  color: var(--ds-color-text-muted);
  font-weight: 560;
  border-bottom: 1px solid var(--ds-color-border);
}

.seg-panel td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--ds-color-divider);
  color: var(--ds-color-text-secondary);
  vertical-align: middle;
}

.seg-transfer-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 0.75rem;
  background: var(--ds-color-bg-subtle);
  border-inline: 1px solid var(--ds-color-divider);
}

.seg-transfer-col .ds-btn {
  min-width: 9rem;
  justify-content: center;
}

.seg-avatar {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--ds-radius-full);
  background: var(--ds-color-primary-muted);
  color: var(--ds-color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  margin-inline-end: 0.5rem;
  vertical-align: middle;
}

/* ─── Create drawer ─── */
.seg-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 900;
  display: none;
}

.seg-drawer-backdrop.is-open {
  display: block;
}

.seg-drawer {
  position: fixed;
  top: 0;
  bottom: 0;
  inset-inline-end: 0;
  width: min(440px, 100vw);
  z-index: 901;
  background: var(--ds-color-surface);
  border-inline-start: 1px solid var(--ds-color-border);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.35);
  display: none;
  flex-direction: column;
}

.seg-drawer.is-open {
  display: flex;
}

.seg-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--ds-color-divider);
}

.seg-drawer__head h2 {
  margin: 0;
  font-size: var(--ds-text-section-size);
}

.seg-drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: 1.25rem 1.5rem;
}

.seg-drawer__foot {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--ds-color-divider);
  display: flex;
  gap: var(--ds-space-1);
}

.seg-color-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.seg-color-swatch {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: var(--ds-radius-full);
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
}

.seg-color-swatch.is-selected {
  border-color: #fff;
  box-shadow: 0 0 0 2px var(--ds-color-primary);
}

.seg-icon-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.seg-icon-btn {
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid var(--ds-color-border);
  border-radius: var(--ds-radius-input);
  background: var(--ds-color-bg-subtle);
  color: var(--ds-color-text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

.seg-icon-btn.is-selected {
  border-color: var(--ds-color-primary);
  color: var(--ds-color-primary);
  background: var(--ds-color-primary-muted);
}

.seg-suggestions {
  margin-top: var(--ds-space-2);
  padding-top: var(--ds-space-2);
  border-top: 1px solid var(--ds-color-divider);
}

.seg-suggestions__title {
  margin: 0 0 0.75rem;
  font-size: var(--ds-text-label-size);
  color: var(--ds-color-text-muted);
}

.seg-suggestions__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.seg-suggestion-chip {
  padding: 0.35rem 0.65rem;
  border-radius: var(--ds-radius-full);
  border: 1px solid var(--ds-color-border);
  background: var(--ds-color-bg-subtle);
  color: var(--ds-color-text-secondary);
  font-size: var(--ds-text-caption-size);
  cursor: pointer;
  transition: background 120ms ease;
}

.seg-suggestion-chip:hover {
  background: var(--ds-color-primary-muted);
  border-color: var(--ds-color-primary);
  color: var(--ds-color-text);
}