/**
 * Composer Attachment Panel + Preview Modal (Phase 6.4).
 * Light / dark via CSS variables. Shared by visitor widget + admin dashboard.
 */
.ic-att-panel {
  --ic-att-bg: #ffffff;
  --ic-att-surface: #f4f6f9;
  --ic-att-border: #dde2ea;
  --ic-att-text: #1a1f2c;
  --ic-att-muted: #6b7385;
  --ic-att-accent: #1f4b99;
  --ic-att-danger: #b42318;
  --ic-att-danger-bg: #fef3f2;
  --ic-att-progress: #1f4b99;
  --ic-att-progress-track: #e4e8ef;
  --ic-att-radius: 10px;
  --ic-att-overlay: rgba(15, 23, 42, 0.55);

  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  min-width: 0;
  color: var(--ic-att-text);
  color-scheme: light;
}

.ic-comp[data-theme="dark"] .ic-att-panel,
.ic-comp.ic-comp--dark .ic-att-panel,
.ic-conv[data-theme="dark"] .ic-att-panel,
.ic-att-panel[data-theme="dark"] {
  --ic-att-bg: #1a1f2c;
  --ic-att-surface: #232836;
  --ic-att-border: #2c3344;
  --ic-att-text: #e8eaef;
  --ic-att-muted: #9aa3b2;
  --ic-att-accent: #6b9eff;
  --ic-att-danger: #f97066;
  --ic-att-danger-bg: #3b1a1a;
  --ic-att-progress: #6b9eff;
  --ic-att-progress-track: #2a3040;
  --ic-att-overlay: rgba(0, 0, 0, 0.7);
  color-scheme: dark;
}

@media (prefers-color-scheme: dark) {
  .ic-comp[data-theme="auto"] .ic-att-panel,
  .ic-conv[data-theme="auto"] .ic-att-panel {
    --ic-att-bg: #1a1f2c;
    --ic-att-surface: #232836;
    --ic-att-border: #2c3344;
    --ic-att-text: #e8eaef;
    --ic-att-muted: #9aa3b2;
    --ic-att-accent: #6b9eff;
    --ic-att-danger: #f97066;
    --ic-att-danger-bg: #3b1a1a;
    --ic-att-progress: #6b9eff;
    --ic-att-progress-track: #2a3040;
    --ic-att-overlay: rgba(0, 0, 0, 0.7);
    color-scheme: dark;
  }
}

.ic-att-panel__limits {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.75rem;
  font-size: 0.6875rem;
  color: var(--ic-att-muted);
  padding: 0 0.15rem;
}

.ic-att-panel__strip {
  display: flex;
  flex-direction: row;
  gap: 0.5rem;
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x proximity;
  padding-bottom: 0.15rem;
  max-width: 100%;
}

.ic-att-panel__strip:focus-visible {
  outline: 2px solid var(--ic-att-accent);
  outline-offset: 2px;
}

.ic-att-panel__errors {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.ic-att-panel__error {
  padding: 0.35rem 0.55rem;
  border-radius: 8px;
  background: var(--ic-att-danger-bg);
  color: var(--ic-att-danger);
  font-size: 0.8125rem;
}

/* Card */
.ic-att-card {
  flex: 0 0 auto;
  width: 11.5rem;
  max-width: 78vw;
  display: grid;
  grid-template-columns: 3rem 1fr;
  grid-template-rows: auto auto;
  gap: 0.35rem 0.45rem;
  padding: 0.45rem;
  background: var(--ic-att-surface);
  border: 1px solid var(--ic-att-border);
  border-radius: var(--ic-att-radius);
  scroll-snap-align: start;
  min-width: 0;
}

.ic-att-card:focus-visible {
  outline: 2px solid var(--ic-att-accent);
  outline-offset: 2px;
}

.ic-att-card--failed {
  border-color: var(--ic-att-danger);
}

.ic-att-card__media {
  grid-row: 1 / span 2;
  width: 3rem;
  height: 3rem;
  border: none;
  padding: 0;
  border-radius: 8px;
  background: var(--ic-att-bg);
  border: 1px solid var(--ic-att-border);
  cursor: default;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ic-att-card--previewable .ic-att-card__media {
  cursor: zoom-in;
}

.ic-att-card__thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.ic-att-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--ic-att-muted);
}

.ic-att-card__icon .ic-chat-icon {
  width: 22px;
  height: 22px;
}

.ic-att-card__ext {
  position: absolute;
  bottom: 2px;
  right: 2px;
  font-size: 0.5625rem;
  font-weight: 700;
  background: var(--ic-att-bg);
  color: var(--ic-att-muted);
  padding: 0 3px;
  border-radius: 3px;
}

.ic-att-card__body {
  grid-column: 2;
  min-width: 0;
}

.ic-att-card__name {
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ic-att-card__meta,
.ic-att-card__state {
  font-size: 0.6875rem;
  color: var(--ic-att-muted);
}

.ic-att-card__error {
  font-size: 0.6875rem;
  color: var(--ic-att-danger);
  margin-top: 0.15rem;
}

.ic-att-card__progress {
  height: 3px;
  margin-top: 0.3rem;
  background: var(--ic-att-progress-track);
  border-radius: 999px;
  overflow: hidden;
}

.ic-att-card__bar {
  height: 100%;
  width: 0;
  background: var(--ic-att-progress);
  transition: width 120ms linear;
}

.ic-att-card__actions {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.ic-att-card__btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border: 1px solid var(--ic-att-border);
  background: var(--ic-att-bg);
  color: var(--ic-att-text);
  font-size: 0.6875rem;
  padding: 0.15rem 0.4rem;
  border-radius: 6px;
  cursor: pointer;
}

.ic-att-card__btn:hover,
.ic-att-card__btn:focus-visible {
  border-color: var(--ic-att-accent);
  outline: none;
}

.ic-att-card__btn--danger {
  color: var(--ic-att-danger);
}

/* Preview modal */
.ic-att-preview {
  position: fixed;
  inset: 0;
  z-index: 10050;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.ic-att-preview[hidden] {
  display: none !important;
}

.ic-att-preview__backdrop {
  position: absolute;
  inset: 0;
  background: var(--ic-att-overlay, rgba(15, 23, 42, 0.55));
}

.ic-att-preview__dialog {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  max-height: min(90vh, 900px);
  display: flex;
  flex-direction: column;
  background: var(--ic-att-bg, #fff);
  color: var(--ic-att-text, #1a1f2c);
  border-radius: 12px;
  border: 1px solid var(--ic-att-border, #dde2ea);
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.25);
}

.ic-att-preview__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--ic-att-border, #dde2ea);
}

.ic-att-preview__title {
  margin: 0;
  flex: 1;
  font-size: 0.9375rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ic-att-preview__close {
  border: none;
  background: transparent;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  color: var(--ic-att-muted, #6b7385);
  padding: 0.15rem 0.4rem;
}

.ic-att-preview__close:focus-visible {
  outline: 2px solid var(--ic-att-accent, #1f4b99);
}

.ic-att-preview__stage {
  flex: 1 1 auto;
  min-height: 200px;
  max-height: 70vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  background: #0b1220;
  padding: 1rem;
}

.ic-att-preview__img {
  max-width: 100%;
  max-height: 65vh;
  object-fit: contain;
  transform-origin: center center;
  transition: transform 120ms ease;
}

.ic-att-preview__fallback {
  margin: 0;
  color: #e8eaef;
  text-align: center;
  padding: 1rem;
}

.ic-att-preview__footer {
  padding: 0.5rem 0.85rem;
  border-top: 1px solid var(--ic-att-border, #dde2ea);
  font-size: 0.75rem;
  color: var(--ic-att-muted, #6b7385);
}

html.ic-att-preview-open {
  overflow: hidden;
}

/* Conversation host for Composer Engine */
.ic-conv__composer-host {
  width: 100%;
  min-width: 0;
}

.ic-conv__composer-host .ic-comp {
  border-top: none;
  padding: 0.5rem 0.65rem calc(0.5rem + env(safe-area-inset-bottom, 0px));
}

.ic-conv__composer--legacy[hidden] {
  display: none !important;
}

@media (max-width: 560px) {
  .ic-att-card {
    width: 10.25rem;
  }

  .ic-att-preview {
    padding: 0.35rem;
  }

  .ic-att-preview__dialog {
    max-height: 96vh;
    border-radius: 10px;
  }
}