/**
 * LibZen FolderPicker — host-driven folder / file browser.
 * Uses host app CSS variables when present; includes dark-theme fallbacks.
 */

:root {
  --libzen-fp-bg: var(--bg, #0f1419);
  --libzen-fp-surface: var(--surface, #1a2332);
  --libzen-fp-text: var(--text, #e8edf4);
  --libzen-fp-muted: var(--text-muted, #8b9cb3);
  --libzen-fp-border: var(--border, #2d3a4f);
  --libzen-fp-hover: rgba(255, 255, 255, 0.06);
  --libzen-fp-accent: var(--accent, #3b82f6);
  --libzen-fp-accent-hover: var(--accent-dim, #2563eb);
  --libzen-fp-ok: var(--success, #22c55e);
  --libzen-fp-radius: 6px;
  --libzen-fp-shadow: 0 16px 48px rgba(0, 0, 0, 0.45);
  --libzen-fp-font: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

[data-libzen-folder-theme='light'] {
  --libzen-fp-bg: #ffffff;
  --libzen-fp-surface: #ffffff;
  --libzen-fp-text: #37352f;
  --libzen-fp-muted: #9b9a97;
  --libzen-fp-border: rgba(55, 53, 47, 0.16);
  --libzen-fp-hover: rgba(55, 53, 47, 0.06);
  --libzen-fp-accent: #2383e2;
  --libzen-fp-accent-hover: #1a73d1;
  --libzen-fp-ok: #0f7b3a;
  --libzen-fp-shadow: rgba(15, 15, 15, 0.05) 0px 0px 0px 1px,
    rgba(15, 15, 15, 0.1) 0px 8px 24px;
}

.libzen-fp-root {
  position: relative;
  width: 100%;
  font-family: var(--libzen-fp-font);
  color: var(--libzen-fp-text);
}

.libzen-fp-trigger {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--libzen-fp-border);
  border-radius: var(--libzen-fp-radius);
  background: var(--libzen-fp-bg);
  color: inherit;
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.libzen-fp-root:focus-within .libzen-fp-trigger {
  border-color: var(--libzen-fp-accent);
  outline: none;
}

.libzen-fp-trigger:focus-visible {
  outline: 2px solid var(--libzen-fp-accent);
  outline-offset: 1px;
}

.libzen-fp-trigger:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.libzen-fp-glyph {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--libzen-fp-muted);
}

.libzen-fp-label {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.libzen-fp-placeholder {
  color: var(--libzen-fp-muted);
}

.libzen-fp-chevron {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  color: var(--libzen-fp-muted);
}

.libzen-fp-transparent .libzen-fp-trigger,
.libzen-fp-transparent.libzen-fp-root:focus-within .libzen-fp-trigger {
  background: transparent;
  border-color: transparent;
}

.libzen-fp-chip {
  width: auto;
  max-width: 100%;
}

.libzen-fp-chip .libzen-fp-trigger {
  width: auto;
  max-width: 100%;
  min-height: 24px;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--libzen-fp-hover);
}

.libzen-fp-chip.libzen-fp-transparent .libzen-fp-trigger {
  background: var(--libzen-fp-hover);
  border-color: var(--libzen-fp-border);
}

.libzen-fp-contained.libzen-fp-root,
.libzen-fp-transparent.libzen-fp-root {
  font-family: inherit;
}

.libzen-fp-contained .libzen-fp-trigger,
.libzen-fp-transparent .libzen-fp-trigger {
  font-size: inherit;
}

.libzen-fp-backdrop {
  position: fixed;
  inset: 0;
  z-index: 2100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  /* Host apps dim only on auth splash; picker itself stays undimmed */
  background: transparent;
}

.libzen-fp-panel {
  display: flex;
  flex-direction: column;
  width: min(100%, 640px);
  height: min(90vh, 720px);
  background: var(--libzen-fp-surface);
  color: var(--libzen-fp-text);
  border: 1px solid var(--libzen-fp-border);
  border-radius: 12px;
  box-shadow: var(--libzen-fp-shadow);
  overflow: hidden;
  font-family: var(--libzen-fp-font);
  font-size: 14px;
  line-height: 1.45;
}

.libzen-fp-header {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  padding: 14px 16px;
  border-bottom: 1px solid var(--libzen-fp-border);
}

.libzen-fp-title {
  flex: 1;
  min-width: 0;
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
}

.libzen-fp-close {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin: -6px -8px -6px 0;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--libzen-fp-muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
}

.libzen-fp-close:hover {
  color: var(--libzen-fp-text);
  background: var(--libzen-fp-hover);
}

.libzen-fp-toolbar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
  padding: 10px 16px 8px;
  border-bottom: 1px solid var(--libzen-fp-border);
}

.libzen-fp-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
  min-height: 28px;
}

.libzen-fp-crumb {
  border: none;
  background: transparent;
  color: var(--libzen-fp-accent);
  font: inherit;
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 4px;
  cursor: pointer;
}

.libzen-fp-crumb:hover {
  background: var(--libzen-fp-hover);
}

.libzen-fp-crumb[aria-current='true'] {
  color: var(--libzen-fp-text);
  font-weight: 600;
  cursor: default;
}

.libzen-fp-crumb-sep {
  color: var(--libzen-fp-muted);
  font-size: 12px;
}

.libzen-fp-filter {
  width: 100%;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid var(--libzen-fp-border);
  border-radius: var(--libzen-fp-radius);
  background: var(--libzen-fp-bg);
  color: var(--libzen-fp-text);
  font: inherit;
  font-size: 13px;
}

.libzen-fp-filter:focus {
  outline: none;
  border-color: var(--libzen-fp-accent);
}

.libzen-fp-shortcuts {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.libzen-fp-shortcut {
  border: 1px solid var(--libzen-fp-border);
  background: transparent;
  color: var(--libzen-fp-text);
  font: inherit;
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 999px;
  cursor: pointer;
}

.libzen-fp-shortcut:hover,
.libzen-fp-shortcut[aria-current='true'] {
  border-color: var(--libzen-fp-accent);
  background: color-mix(in srgb, var(--libzen-fp-accent) 16%, transparent);
}

.libzen-fp-list {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 6px 8px;
}

.libzen-fp-list[hidden] {
  display: none;
}

.libzen-fp-detail {
  flex: 0 1 auto;
  max-height: 48%;
  min-height: 0;
  overflow: auto;
  padding: 10px 16px 12px;
  border-top: 1px solid var(--libzen-fp-border);
}

.libzen-fp-detail[hidden] {
  display: none;
}

.libzen-fp-detail-fill {
  flex: 1 1 auto;
  max-height: none;
  border-top: none;
}

.libzen-fp-env {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

.libzen-fp-env-title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.3;
}

.libzen-fp-env-sub {
  margin: 0;
  font-size: 12px;
  color: var(--libzen-fp-muted);
}

.libzen-fp-env-seal {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.libzen-fp-env-seal span {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--libzen-fp-muted);
}

.libzen-fp-env-seal code {
  display: block;
  padding: 8px 10px;
  border-radius: 6px;
  background: var(--libzen-fp-bg);
  border: 1px solid var(--libzen-fp-border);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11px;
  line-height: 1.45;
  word-break: break-all;
  color: var(--libzen-fp-text);
}

.libzen-fp-env-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.libzen-fp-env-table th,
.libzen-fp-env-table td {
  padding: 4px 0;
  text-align: left;
  border-bottom: 1px solid var(--libzen-fp-border);
}

.libzen-fp-env-table th {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--libzen-fp-muted);
}

.libzen-fp-env-table td.num,
.libzen-fp-env-table th:last-child {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.libzen-fp-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 36px;
  padding: 4px 10px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: inherit;
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}

.libzen-fp-row:hover,
.libzen-fp-row[aria-selected='true'] {
  background: var(--libzen-fp-hover);
}

.libzen-fp-row[aria-selected='true'] {
  outline: 1px solid color-mix(in srgb, var(--libzen-fp-accent) 45%, transparent);
}

.libzen-fp-row-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--libzen-fp-muted);
}

.libzen-fp-row-dir .libzen-fp-row-icon {
  color: var(--libzen-fp-accent);
}

.libzen-fp-row-name {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.libzen-fp-badge {
  flex-shrink: 0;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 1px 6px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--libzen-fp-ok) 18%, transparent);
  color: var(--libzen-fp-ok);
}

.libzen-fp-row-meta {
  flex-shrink: 0;
  font-size: 11px;
  color: var(--libzen-fp-muted);
}

.libzen-fp-empty,
.libzen-fp-error {
  margin: 24px 16px;
  text-align: center;
  color: var(--libzen-fp-muted);
  font-size: 13px;
}

.libzen-fp-error {
  color: var(--danger, #ef4444);
}

.libzen-fp-status {
  flex-shrink: 0;
  padding: 8px 16px;
  border-top: 1px solid var(--libzen-fp-border);
  font-size: 11px;
  color: var(--libzen-fp-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.libzen-fp-footer {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 8px;
  flex-shrink: 0;
  padding: 12px 16px;
  border-top: 1px solid var(--libzen-fp-border);
  background: color-mix(in srgb, var(--libzen-fp-bg) 40%, var(--libzen-fp-surface));
}

.libzen-fp-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 8px;
  border: 1px solid var(--libzen-fp-border);
  background: transparent;
  color: var(--libzen-fp-text);
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.libzen-fp-btn:hover:not(:disabled) {
  background: var(--libzen-fp-hover);
}

.libzen-fp-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.libzen-fp-btn-primary {
  border-color: var(--libzen-fp-accent);
  background: var(--libzen-fp-accent);
  color: #fff;
}

.libzen-fp-btn-primary:hover:not(:disabled) {
  background: var(--libzen-fp-accent-hover);
  border-color: var(--libzen-fp-accent-hover);
}