/* Scoped preview: the original trainer keeps its existing layout. */
body.vocab-preview {
  --preview-panel: #141a2b;
  --preview-border: #303b53;
  --preview-muted: #acb8d0;
  height: 100vh;
  height: 100dvh;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.vocab-preview > header, .vocab-preview > footer { flex-shrink: 0; }
.preview-shell { flex: 1; min-height: 0; display: flex; flex-direction: column; gap: 1rem; padding: .5rem clamp(1rem, 2.4vw, 3rem) 1rem; }
.preview-topbar { display: flex; align-items: center; gap: 1rem; flex-shrink: 0; }
.preview-title { flex: 1; min-width: 0; }
.preview-title h1 { font-size: 1.35rem; font-weight: 600; margin: .15rem 0 0; }
.preview-eyebrow, .preview-section-label { display: block; color: var(--preview-muted); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; }
.preview-badge { display: inline-block; vertical-align: middle; margin-left: .45rem; padding: .2rem .5rem; border: 1px solid #4d5680; border-radius: 2rem; font-size: .65rem; color: #bac9ff; }
.preview-goal { width: 12rem; }
.preview-goal > div:first-child { display: flex; justify-content: space-between; gap: .5rem; font-size: .78rem; color: var(--preview-muted); }
.preview-goal strong { color: #eef1ff; font-variant-numeric: tabular-nums; }
.preview-goal-track { height: 4px; margin-top: .45rem; border-radius: 1rem; background: #29314b; overflow: hidden; }
.preview-goal-track > div { height: 100%; background: #9daef1; }
.preview-layout { flex: 1; min-height: 0; display: grid; grid-template-columns: minmax(0, 1fr) 19rem; gap: 1.25rem; }
.preview-study { min-width: 0; min-height: 0; display: grid; grid-template-rows: auto minmax(0, 1fr) auto; border: 1px solid var(--preview-border); border-radius: 1rem; background: #101624; color: #f3f5fc; }
.preview-card-top { display: flex; align-items: center; justify-content: space-between; gap: .75rem; padding: .5rem 1.25rem; border-bottom: 1px solid #252f43; }
.preview-card-top > span { font-size: .78rem; color: var(--preview-muted); }
.preview-card-history { display: flex; flex-wrap: wrap; gap: .25rem 1rem; min-width: 0; color: var(--preview-muted); font-size: .78rem; line-height: 1.5; }
.preview-card-history > span { white-space: nowrap; }
.preview-card-actions { display: flex; align-items: center; gap: .25rem; flex-shrink: 0; }
.preview-favorite-indicator { display: inline-flex; align-items: center; gap: .4rem; padding: .3rem .55rem; border: 1px solid #8c7545; border-radius: 2rem; background: #3b3222; color: #f4d78b; font-size: .75rem; white-space: nowrap; }
.preview-content { min-height: 0; overflow-y: auto; overscroll-behavior: contain; scrollbar-gutter: stable; display: grid; grid-template-rows: minmax(min-content, .8fr) minmax(min-content, 1.2fr); padding: 0 clamp(1rem, 3vw, 3rem); }
.preview-question, .preview-answer { position: relative; display: flex; flex-direction: column; justify-content: center; padding: 2.5rem 0 1rem; text-align: center; overflow-wrap: anywhere; }
.preview-answer { justify-content: flex-start; }
.preview-content .preview-section-label { position: absolute; left: 0; right: 0; top: .8rem; text-align: center; }
.preview-question { border-bottom: 1px solid #252f43; }
.preview-question:has(.preview-question-image:not([hidden])) { justify-content: flex-start; }
.preview-question h2 { max-width: 46rem; margin: 1rem auto 0; font-size: clamp(1.5rem, 2.3vw, 2.35rem); line-height: 1.8; font-weight: 500; }
.preview-question-main { min-width: 0; }
.preview-question-main:has(> .preview-question-image:not([hidden])) { padding-top: 3rem; }
.preview-question-main h2 { min-width: 0; }
.preview-question-image { position: absolute; top: .6rem; left: 0; margin: 0; }
.preview-image-button { position: relative; display: block; width: 120px; height: 76px; padding: 0; overflow: hidden; border: 1px solid #53617d; border-radius: .5rem; background: #101624; cursor: zoom-in; }
.preview-image-button img { display: block; width: 100%; height: 100%; object-fit: contain; }
.preview-image-placeholder { display: none; }
.preview-question-image:not([data-phase="ready"]) .preview-image-button img { visibility: hidden; }
.preview-question-image:not([data-phase="ready"]) .preview-image-expand { display: none; }
.preview-question-image:not([data-phase="ready"]) .preview-image-placeholder { position: absolute; inset: 0; display: grid; place-items: center; padding: .25rem; color: var(--preview-muted); font-size: .65rem; }
.preview-image-expand { position: absolute; right: .2rem; bottom: .2rem; padding: .15rem .25rem; border-radius: .2rem; background: #101624d9; color: #fff; font-size: .65rem; }
.preview-image-modal .modal-dialog { max-width: min(90vw, 52rem); margin-inline: auto; }
.preview-image-modal .modal-content { background: var(--preview-panel); border-color: var(--preview-border); }
.preview-image-modal .modal-body { display: flex; justify-content: center; padding: 1rem; }
.preview-image-modal .modal-body img { display: block; width: 100%; height: auto; max-height: 70vh; max-height: 70dvh; object-fit: contain; }
.preview-answer h3 { max-width: 46rem; margin: .65rem auto; font-size: clamp(1.2rem, 1.8vw, 1.65rem); line-height: 1.65; font-weight: 400; }
.preview-answer-hint { color: #91a0bb; margin: 1rem 0; font-size: .9rem; }
.preview-readings { color: #cad4ed; font-size: 1rem; line-height: 1.75; }
.preview-readings #artUndZusatz { color: var(--preview-muted); font-size: .8rem; margin-top: .35rem; }
.preview-controls { position: relative; padding: 1rem 1.25rem .65rem; border-top: 1px solid var(--preview-border); background: var(--preview-panel); border-radius: 0 0 1rem 1rem; }
.preview-actions { display: flex; gap: .75rem; height: 3.25rem; }
.preview-action { flex: 1; border: 1px solid #687bb6; border-radius: .65rem; font: inherit; font-weight: 600; color: #f6f7ff; background: #27365d; padding: .5rem 1rem; }
.preview-action-primary { background: #5267a6; border-color: #7d90cb; }
.preview-action-false { background: #342735; border-color: #926574; }
.preview-action:hover:not(:disabled) { filter: brightness(1.15); }
.preview-action:disabled { opacity: .55; cursor: wait; }
.preview-tools { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: .8rem; padding-top: .55rem; min-height: 3.3rem; }
.preview-icon-button, .preview-tool { display: inline-flex; align-items: center; justify-content: center; gap: .5rem; min-width: 44px; min-height: 44px; padding: .5rem .7rem; color: #c7d3ef; background: transparent; border: 1px solid transparent; border-radius: .55rem; font-size: .85rem; text-decoration: none; }
.preview-tool { border-color: #35425e; }
.preview-icon-button:hover:not(:disabled), .preview-tool:hover:not(:disabled) { background: #26324c; color: white; }
.preview-icon-button:disabled, .preview-tool:disabled { opacity: .4; }
.preview-icon-button[aria-disabled="true"] { pointer-events: none; opacity: .4; }
.preview-tool > * { pointer-events: none; }
.preview-tools-end { grid-column: 3; justify-self: end; display: flex; align-items: center; gap: .3rem; }
.preview-tools-end > .preview-icon-button { border-color: #35425e; }
.vocab-preview #bookmarkButton[aria-pressed="true"] { border-color: #8c7545; background: #3b3222 !important; color: #f4d78b; }
.preview-audio-tools { justify-self: start; display: flex; align-items: center; }
.preview-audio-tools > .preview-tool { border-radius: .55rem 0 0 .55rem; }
.preview-audio-tools > .preview-icon-button { min-width: 32px; padding: .5rem; border-color: #35425e; border-left: 0; border-radius: 0 .55rem .55rem 0; }
.preview-audio-panel { position: absolute; z-index: 5; bottom: calc(100% + .5rem); left: .75rem; right: .75rem; padding: .5rem; background: #0d1320; border: 1px solid var(--preview-border); border-radius: .65rem; box-shadow: 0 .5rem 2rem #0006; }
.preview-audio-panel audio { width: min(100%, 30rem); height: 40px; }
.preview-audio-panel #audioSteuerung { display: flex !important; min-height: 40px; }
.preview-audio-panel p { font-size: .8rem; color: var(--preview-muted); margin: .3rem; }
.preview-keyboard { display: grid; gap: .65rem; list-style: none; padding: 0 .5rem; font-size: .7rem; color: #9aa9c5; margin: 1.25rem 0 0; }
.preview-keyboard li { display: flex; align-items: center; gap: .5rem; }
.preview-keyboard li > span { flex-shrink: 0; }
.preview-keyboard kbd { background: #242d44; color: #cad5ef; }
.preview-state-message { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.preview-sidebar { --bs-offcanvas-bg: #141a2b; --bs-offcanvas-color: #f3f5fc; --bs-offcanvas-width: min(90vw, 22rem); min-height: 0; }
.preview-sidebar .offcanvas-body { display: block; padding: 0; overflow-y: auto; }
.preview-info-card { padding: 1.2rem; border: 1px solid var(--preview-border); border-radius: 1rem; background: var(--preview-panel); }
.preview-info-heading { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; gap: .5rem; }
.preview-info-heading h2 { font-size: 1rem; margin: 0; }
.preview-stats { display: grid; gap: .8rem; margin: 0; }
.preview-stats > div { display: flex; justify-content: space-between; gap: .75rem; align-items: center; }
.preview-stats dt { color: var(--preview-muted); font-size: .82rem; font-weight: 400; }
.preview-stats dd { margin: 0; font-size: 1.1rem; font-weight: 600; font-variant-numeric: tabular-nums; }
.preview-history { border-top: 1px solid var(--preview-border); margin-top: 1.25rem; padding-top: 1.25rem; font-size: .8rem; line-height: 1.8; color: var(--preview-muted); }
.preview-history h3 { font-size: .82rem; color: #edf2ff; margin-bottom: .65rem; }
.preview-sidebar-footer { padding: 1.25rem .5rem; font-size: .8rem; }
.vocab-preview a { color: #b7c9ff; }
.preview-muted { color: var(--preview-muted); font-size: .82rem; }
.vocab-preview .weight-popover[hidden] { display: none; }
.vocab-preview .weight-popover { max-height: calc(100dvh - 2rem); overflow-y: auto; }
.preview-weight-cancel { margin-top: .8rem; padding: .5rem; border: 0; background: transparent; color: #c5d4f8; }
.preview-navigation { --bs-offcanvas-bg: #141a2b; --bs-offcanvas-color: #f3f5fc; }
.preview-navigation nav { display: grid; gap: .3rem; }
.preview-navigation nav > a { padding: .8rem; border-radius: .5rem; text-decoration: none; }
.preview-navigation nav > a:hover { background: #26324c; }
.vocab-preview :is(button, a, input, [tabindex]):focus-visible { outline: 2px solid #b9caff; outline-offset: 3px; }
.preview-mobile { display: none; }
.vocab-preview [hidden] { display: none !important; }
.vocab-preview #displayWeight { grid-column: 2; justify-self: center; display: flex !important; gap: .3rem; white-space: nowrap; }
.preview-tools .preview-weight-step { flex-shrink: 0; min-width: 56px; }
.vocab-preview #reportFeedback:not(:empty) { position: fixed; z-index: 1090; bottom: 1rem; left: 1rem; right: 1rem; width: fit-content; padding: .75rem 1rem; border: 1px solid #476a62; border-radius: .65rem; background: #132820; }

@media (max-width: 991.98px) {
  body.vocab-preview { padding-top: 0; }
  .vocab-preview > header, .vocab-preview > footer { display: none; }
  .preview-shell { gap: .6rem; padding: max(.5rem, env(safe-area-inset-top)) max(.65rem, env(safe-area-inset-right)) max(.65rem, env(safe-area-inset-bottom)) max(.65rem, env(safe-area-inset-left)); }
  .preview-mobile { display: inline-flex; }
  .preview-topbar { gap: .4rem; }
  .preview-title h1 { font-size: 1rem; }
  .preview-eyebrow { display: none; }
  .preview-badge { font-size: .55rem; margin-left: 0; padding: .15rem .35rem; }
  .preview-goal { width: 7.5rem; }
  .preview-goal > div:first-child { font-size: .65rem; }
  .preview-layout { grid-template-columns: minmax(0, 1fr); }
  .preview-sidebar .offcanvas-body { padding: 1rem; }
  .preview-card-top { padding: .25rem .65rem; }
  .preview-card-history { display: grid; gap: .1rem; font-size: .7rem; }
  .preview-card-history > span { overflow: hidden; text-overflow: ellipsis; }
  .preview-card-actions { gap: .15rem; }
  .preview-favorite-indicator { padding: .3rem .4rem; }
  .preview-favorite-label { display: none; }
  .preview-content { padding: 0 1rem; }
  .preview-question, .preview-answer { padding: 2.25rem 0 .8rem; }
  .preview-question h2 { font-size: clamp(1.3rem, 4.5vw, 2rem); line-height: 1.7; margin-top: .6rem; }
  .preview-question-main:has(> .preview-question-image:not([hidden])) { padding-top: 1.5rem; }
  .preview-question-image { top: .5rem; }
  .preview-image-button { width: 80px; height: 51px; }
  .preview-answer h3 { font-size: 1.15rem; }
  .preview-controls { padding: .65rem; }
  .preview-tool-label { display: none; }
  .preview-tools { grid-template-columns: auto minmax(0, 1fr) auto; gap: .5rem; }
  .vocab-preview #displayWeight { gap: .15rem; flex-shrink: 0; }
  .preview-tools :is(.preview-tool, .preview-icon-button) { min-width: 36px; padding: .4rem .45rem; }
  .preview-tools .preview-weight-step { min-width: 44px; }
  .preview-shell:not([data-state="idle"]) #weightNumber > :is(i, svg) { display: none; }
  .vocab-preview #weightNumber { padding-inline: .3rem; }
  .preview-tool { gap: .3rem; padding: .5rem; font-size: .75rem; }
  .preview-tools-end { gap: .2rem; }
  .preview-audio-tools > .preview-icon-button { min-width: 28px; }
  .preview-action { padding: .5rem; font-size: .9rem; }
  .vocab-preview .weight-popover { top: auto; bottom: max(.65rem, env(safe-area-inset-bottom)); transform: translateX(-50%); }
}
@media (max-width: 390px) {
  .preview-title .preview-badge { display: none; }
  .preview-goal { width: 6rem; }
  .preview-tools :is(.preview-tool, .preview-icon-button) { min-width: 32px; padding-inline: .3rem; }
  .preview-tools .preview-weight-step { min-width: 40px; }
  .preview-tools .preview-audio-tools > .preview-icon-button { min-width: 28px; }
  .preview-goal > div:first-child { flex-direction: column; gap: 0; }
}
@media (max-width: 360px) {
  .preview-tools { gap: .25rem; }
  .preview-tools :is(.preview-tool, .preview-icon-button) { min-width: 28px; padding-inline: .2rem; }
  .preview-tools .preview-weight-step { min-width: 32px; }
  .preview-tools .preview-audio-tools > .preview-icon-button { min-width: 24px; }
  .preview-tools-end { gap: .1rem; }
}
@media (max-height: 600px) {
  .preview-eyebrow { display: none; }
  .preview-shell { gap: .4rem; }
  .preview-controls { padding-top: .5rem; }
  .preview-question, .preview-answer { padding: 2rem 0 .6rem; }
}

/* Wide touch tablets retain the sidebar and use the full viewport for learning. */
@media (min-width: 992px) and (orientation: landscape) and (hover: none) and (pointer: coarse) {
  body.vocab-preview { padding-top: 0; }
  .vocab-preview > header, .vocab-preview > footer { display: none; }
  .preview-menu { display: inline-flex; }
  .preview-shell { padding-top: max(.5rem, env(safe-area-inset-top)); padding-bottom: max(.65rem, env(safe-area-inset-bottom)); }
}