/* Shared readable surfaces, badges and keyboard focus. */
:root { color-scheme: light; }
.dark { color-scheme: dark; }
.fa-solid.hidden, .fa-regular.hidden, .fa-brands.hidden { display: none; }
:where(a, button, input, select, textarea, summary):focus-visible {
  outline: 2px solid #dc2626;
  outline-offset: 3px;
}
.dark :where(a, button, input, select, textarea, summary):focus-visible { outline-color: #f87171; }
input::placeholder, textarea::placeholder { color: #52525b; opacity: 1; }
.dark input::placeholder, .dark textarea::placeholder { color: #a1a1aa; }
.ui-badge {
  display: inline-flex; align-items: center; gap: .375rem; width: fit-content;
  padding: .2rem .55rem; border: 1px solid #d4d4d8; border-radius: .5rem;
  background: #f4f4f5; color: #3f3f46; font-size: .7rem; font-weight: 700; line-height: 1.4;
}
.dark .ui-badge { background: #27272a; border-color: #52525b; color: #f4f4f5; }

/* Administration: the library and both editors share the same layout. */
.admin-page {
  --admin-bg: #fafafa; --admin-surface: #fff; --admin-soft: #f4f4f5;
  --admin-border: #e4e4e7; --admin-input-border: #a1a1aa;
  --admin-text: #18181b; --admin-muted: #52525b; --admin-accent: #b91c1c;
  background: var(--admin-bg); color: var(--admin-text); min-height: 75vh;
  padding: 2.5rem 1rem 4rem;
}
.dark .admin-page {
  --admin-bg: #09090b; --admin-surface: #18181b; --admin-soft: #27272a;
  --admin-border: #3f3f46; --admin-input-border: #71717a;
  --admin-text: #f4f4f5; --admin-muted: #d4d4d8; --admin-accent: #f87171;
}
.admin-shell { max-width: 1200px; margin: 0 auto; }
.admin-heading { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; margin-bottom: 1.75rem; }
.admin-eyebrow { margin-bottom: .5rem; color: var(--admin-muted); font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.admin-heading h1 { font-size: clamp(1.75rem, 4vw, 2.25rem); font-weight: 800; line-height: 1.2; overflow-wrap: anywhere; }
.admin-heading p:not(.admin-eyebrow) { margin-top: .5rem; color: var(--admin-muted); font-size: .9rem; }
.admin-back { display: inline-flex; align-items: center; gap: .5rem; color: var(--admin-muted); font-size: .8rem; font-weight: 600; margin-bottom: 1.25rem; }
.admin-back:hover { color: var(--admin-accent); }
.admin-button { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-height: 42px; padding: .6rem 1rem; border: 1px solid var(--admin-border); border-radius: .65rem; background: var(--admin-surface); color: var(--admin-text); font-size: .8rem; font-weight: 700; white-space: nowrap; text-decoration: none; cursor: pointer; transition: background .15s; }
.admin-button:hover { background: var(--admin-soft); }
.admin-button-primary { background: #b91c1c; border-color: #b91c1c; color: #fff; }
.admin-button-primary:hover { background: #991b1b; border-color: #991b1b; }
.admin-button-delete { color: var(--admin-accent); }
.admin-panel { background: var(--admin-surface); border: 1px solid var(--admin-border); border-radius: 1rem; overflow: hidden; }
.admin-panel-heading { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--admin-border); }
.admin-panel-heading h2 { font-size: 1rem; font-weight: 750; }
.admin-panel-heading p { margin-top: .25rem; font-size: .8rem; color: var(--admin-muted); }
.admin-panel-body { padding: 1.5rem; }
.admin-toolbar { display: grid; grid-template-columns: minmax(0, 1fr) minmax(160px, 220px) auto auto; gap: .75rem; align-items: end; padding: 1.25rem; }
.admin-label { display: block; font-size: .8rem; font-weight: 650; margin-bottom: .5rem; }
.admin-input { display: block; width: 100%; min-width: 0; min-height: 44px; padding: .65rem .8rem; border-radius: .6rem; border: 1px solid var(--admin-input-border); background: var(--admin-surface); color: var(--admin-text); font: inherit; font-size: .875rem; }
textarea.admin-input { resize: vertical; }
.admin-hint { font-size: .75rem; line-height: 1.6; color: var(--admin-muted); margin-top: .5rem; }
.admin-results { padding: 1rem 1.25rem; font-size: .8rem; color: var(--admin-muted); border-top: 1px solid var(--admin-border); }
.admin-list-head, .admin-machine-row { display: grid; grid-template-columns: minmax(0, 1fr) 160px 100px 175px; gap: 1.25rem; align-items: center; padding: 1rem 1.25rem; }
.admin-list-head { background: var(--admin-soft); color: var(--admin-muted); font-size: .7rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; }
.admin-machine-row { border-top: 1px solid var(--admin-border); }
.admin-machine-row:hover { background: var(--admin-bg); }
.admin-machine-identity { display: flex; align-items: center; gap: 1rem; min-width: 0; }
.admin-thumbnail { position: relative; width: 56px; height: 56px; flex-shrink: 0; border: 1px solid var(--admin-border); border-radius: .75rem; background: var(--admin-soft); display: flex; align-items: center; justify-content: center; overflow: hidden; color: var(--admin-muted); }
.admin-thumbnail img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: var(--admin-soft); }
.admin-machine-name { font-size: .9rem; font-weight: 700; overflow-wrap: anywhere; }
.admin-machine-name a:hover { color: var(--admin-accent); }
.admin-machine-meta { margin-top: .3rem; color: var(--admin-muted); font-size: .75rem; overflow-wrap: anywhere; }
.admin-machine-cell { font-size: .8rem; overflow-wrap: anywhere; }
.admin-row-actions { display: flex; justify-content: flex-end; gap: .5rem; }
.admin-empty { padding: 3rem 1.5rem; text-align: center; }
.admin-empty h2 { font-size: 1.1rem; font-weight: 700; }
.admin-empty p { color: var(--admin-muted); margin: .5rem 0 1.25rem; font-size: .875rem; }
.admin-editor { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 1.25rem; align-items: start; }
.admin-editor-main { display: grid; gap: 1.25rem; min-width: 0; }
.admin-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.admin-field-wide { grid-column: 1 / -1; }
.admin-muscle-group + .admin-muscle-group { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--admin-border); }
.admin-chips { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: .75rem; }
.admin-chip { padding: .45rem .65rem; border: 1px solid var(--admin-input-border); border-radius: .5rem; background: var(--admin-surface); color: var(--admin-muted); font-size: .75rem; font-weight: 600; cursor: pointer; }
.admin-chip:hover { border-color: var(--admin-accent); color: var(--admin-text); }
.admin-chip[aria-pressed="true"] { background: #b91c1c; border-color: #b91c1c; color: white; }
.admin-custom-muscle { display: flex; align-items: center; gap: .5rem; }
.admin-image-preview { aspect-ratio: 1 / 1; background: var(--admin-soft); display: flex; align-items: center; justify-content: center; color: var(--admin-muted); }
.admin-image-preview img { width: 100%; height: 100%; object-fit: contain; padding: 1rem; }
.admin-upload { max-width: 100%; color: var(--admin-muted); font-size: .75rem; }
.admin-upload::file-selector-button { display: block; margin-bottom: .75rem; border: 1px solid var(--admin-input-border); border-radius: .5rem; padding: .6rem .8rem; background: var(--admin-surface); color: var(--admin-text); font-weight: 600; cursor: pointer; }
.admin-form-actions { grid-column: 1 / -1; display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.25rem; border: 1px solid var(--admin-border); border-radius: .85rem; background: var(--admin-surface); }
.admin-form-actions p { font-size: .75rem; color: var(--admin-muted); }
.admin-form-actions > div { display: flex; gap: .5rem; }
.admin-alert { margin-bottom: 1.25rem; padding: 1rem 1.25rem; border: 1px solid var(--admin-border); border-left: 3px solid var(--admin-accent); background: var(--admin-surface); border-radius: .65rem; color: var(--admin-text); font-size: .875rem; }
@media (max-width: 900px) {
  .admin-list-head, .admin-machine-row { grid-template-columns: minmax(0, 1fr) 120px 165px; gap: 1rem; }
  .admin-machine-logging { display: none; }
  .admin-editor { grid-template-columns: minmax(0, 1fr) 250px; }
}
@media (max-width: 640px) {
  .admin-page { padding-top: 1.5rem; }
  .admin-heading { flex-direction: column; align-items: stretch; gap: 1rem; }
  .admin-heading > .admin-button { align-self: flex-start; }
  .admin-toolbar { grid-template-columns: minmax(0, 1fr) auto; padding: 1rem; }
  .admin-search-field { grid-column: 1 / -1; }
  .admin-list-head { display: none; }
  .admin-machine-row { grid-template-columns: minmax(0, 1fr) auto; padding: 1rem; }
  .admin-machine-identity { grid-column: 1 / -1; }
  .admin-row-actions .admin-button { padding: .5rem .75rem; }
  .admin-editor, .admin-fields { grid-template-columns: minmax(0, 1fr); }
  .admin-panel-heading, .admin-panel-body { padding: 1.1rem; }
  .admin-image-preview { aspect-ratio: 16 / 9; }
  .admin-form-actions { flex-wrap: wrap; }
  .admin-form-actions > div { width: 100%; }
  .admin-form-actions .admin-button { flex: 1; }
}