/* Base layout and shared components */

/* Design tokens */

:root {
  --bg: #f4f1ea;
  --card: #fffdf8;
  --text: #1a1a1a;
  --muted: #5c5c5c;
  --border: #d8d2c7;
  --accent: #2f2f2f;
  --error: #8b1e1e;
  --font-ui: system-ui, sans-serif;
  --font-tagline: "Gill Sans", "Gill Sans MT", Optima, "Trebuchet MS", Calibri, sans-serif;

  /* Label dimensions (defaults; may be overridden at runtime) */
  --label-width: 50mm;
  --label-height: 80mm;
  --label-ratio: 5 / 8;
  --label-min-display-width: 50mm;
  --label-padding-x: 1mm;
  --label-padding-y: 1mm;
  --label-title-margin-bottom: 0.5mm;
  --label-title-year-margin-bottom: 2.5mm;
  --label-artist-margin-bottom: 2.5mm;
  --label-meta-margin-bottom: 0.5mm;
  --label-description-margin-top: 2mm;
  --label-interpretation-padding-top: 1.5mm;
  --label-footer-body-gap: 3mm;
  --label-footer-inner-gap: 2mm;
  --label-qr-size-mm: 8;
  --label-title-font-size: 2.75mm;
  --label-title-year-font-size: 2.5mm;
  --label-artist-font-size: 2.5mm;
  --label-meta-font-size: 2.1mm;
  --label-description-font-size: 2.35mm;
  --label-interpretation-font-size: 2.35mm;
  --label-footer-font-size: 1.9mm;
  --label-raw-font-size: 2.35mm;
  --label-description-flex: 1;
  --label-interpretation-flex: 0;
  --label-body-line-height: 1.28;

  /* Vertical spacing between main sections */
  --content-stack-gap: 1.5rem;

  /* Catalog and supplementary panel surfaces */
  --catalog-border: #e3ddd2;
  --catalog-paper-1: #fefdfb;
  --catalog-paper-2: #faf7f1;
  --catalog-paper-3: #f7f3eb;
  --catalog-accent-line: #cfc7b8;
  --catalog-frame-line: rgba(207, 199, 184, 0.38);
  --catalog-edge-stripe: rgba(36, 30, 22, 0.062);
  --catalog-edge-stripe-opacity: 0.9;
  --catalog-edge-boundary: rgba(180, 172, 158, 0.36);
  --catalog-edge-boundary-soft: rgba(180, 172, 158, 0.16);
  --catalog-inset-x: 2.25rem;
  --catalog-inset-y: 1.35rem;
  --catalog-inset-x-narrow: 1.25rem;
  --catalog-shadow-elevated:
    0 16px 42px rgba(36, 30, 22, 0.12),
    0 4px 12px rgba(36, 30, 22, 0.07);
  --catalog-shadow-panel:
    0 10px 28px rgba(36, 30, 22, 0.07),
    0 2px 6px rgba(36, 30, 22, 0.04);
}

/* Base & page shell */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.45;
}

.page {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.hidden {
  display: none !important;
}

/* Site header & footer */

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.site-header h1 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 600;
}

.site-home-link {
  color: inherit;
  text-decoration: none;
}

.site-home-link:hover {
  text-decoration: underline;
}

.site-tagline {
  margin: 0.35rem 0 0;
  font-family: var(--font-tagline);
  font-size: 0.92rem;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0.06em;
  line-height: 1.05;
  white-space: pre-wrap;
}

.lang-switcher {
  flex-shrink: 0;
}

.lang-label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-footer {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.legal-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  justify-content: center;
}

.legal-nav a {
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  text-decoration: underline;
}

.legal-nav a:hover,
.legal-nav a:focus-visible {
  color: var(--text);
}

.legal-page {
  width: min(100%, 48rem);
}

.legal-page-main {
  flex: 1;
  padding-top: 2rem;
}

.legal-site-brand {
  margin: 0;
  font-size: 1.4rem;
  font-weight: 600;
}

.legal-page-header {
  margin-bottom: 1.5rem;
}

.legal-page-header h1 {
  margin: 0;
  font-family: var(--font-ui);
  font-size: clamp(1.5rem, 4vw, 2.15rem);
  font-weight: 600;
}

.legal-page-body {
  font-family: var(--font-ui);
  line-height: 1.6;
}

.legal-page-body .legal-section {
  margin-bottom: 1rem;
}

.legal-page-body .legal-section summary {
  font-size: 1rem;
}

.legal-page-body .legal-section-body p {
  font-size: 0.95rem;
}

.legal-back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--muted);
  font-family: var(--font-ui);
  font-size: 0.9rem;
}

/* Form controls */

.lang-select,
.control-select {
  width: 100%;
  margin: 0;
  padding: 0.45rem 1.75rem 0.45rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--card);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  line-height: 1.2;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235c5c5c' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.55rem center;
}

.lang-select {
  width: auto;
}

.control-select:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

button {
  margin-top: 0;
  padding: 0.65rem 1.2rem;
  border: 1px solid var(--accent);
  border-radius: 4px;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-ui);
  font-size: 0.95rem;
  cursor: pointer;
}

button:disabled {
  opacity: 0.6;
  cursor: wait;
}

.btn-secondary {
  background: var(--card);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
}

.btn-danger {
  background: var(--error);
  color: #fff;
  border-color: var(--error);
}

.btn-danger:hover:not(:disabled) {
  background: #6f1818;
  border-color: #6f1818;
}

/* Upload area */

.intro-text {
  max-width: 30rem;
  margin: 0 auto 1.25rem;
  text-align: center;
  font-family: var(--font-ui);
  font-size: 1rem;
  line-height: 1.45;
  color: var(--muted);
}

.intro-line {
  display: inline;
}

.intro-line + .intro-line::before {
  content: " ";
}

.controls {
  margin-bottom: 0;
  padding-bottom: 1.5rem;
}

.upload-form {
  width: 100%;
  max-width: 30rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.upload-card {
  width: 100%;
  min-height: 220px;
  border: 2px dashed var(--border);
  border-radius: 8px;
  background: var(--card);
  overflow: hidden;
}

.upload-card .drop-zone {
  min-height: 220px;
  border: none;
  border-radius: 0;
  background: transparent;
}

.upload-actions {
  display: flex;
  justify-content: center;
  width: 100%;
  padding: 0;
}

.upload-form:not(.has-file) .upload-actions {
  opacity: 0.72;
}

.upload-actions button {
  width: 18rem;
  max-width: 100%;
  text-align: center;
}

button.is-busy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
}

.busy-spinner {
  flex-shrink: 0;
  width: 0.85rem;
  height: 0.85rem;
  border: 2px solid rgba(255, 255, 255, 0.28);
  border-top-color: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  animation: busy-spin 0.8s linear infinite;
}

.busy-spinner--stage2 {
  border-color: rgba(255, 255, 255, 0.22);
  border-top-color: #dcc9a3;
}

.busy-label {
  white-space: pre-line;
  line-height: 1.3;
  text-align: center;
}

@keyframes busy-spin {
  to {
    transform: rotate(360deg);
  }
}

.upload-actions button.is-busy .busy-label {
  font-size: 0.82rem;
  letter-spacing: -0.01em;
}

.drop-zone {
  padding: 2rem 1rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.drop-zone.dragover {
  background: rgba(255, 255, 255, 0.55);
}

.upload-form.dragover .upload-card {
  border-color: var(--accent);
}

.drop-zone-icon {
  display: block;
  width: 3.75rem;
  height: 3.75rem;
  margin: 0 auto 0.85rem;
  flex-shrink: 0;
}

/* Entspricht button:disabled (0.6) × .upload-actions ohne Datei (0.72) */
.upload-form:not(.has-file) .drop-zone-icon {
  opacity: 0.432;
}

.drop-zone-text {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--muted);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.drop-zone-text-hint {
  margin-top: 0.35rem;
  white-space: pre-line;
}

.file-name {
  margin: 0.75rem 0 0;
  max-width: 100%;
  font-family: var(--font-ui);
  font-size: 0.82rem;
  color: var(--muted);
  word-break: break-all;
}

.preview-image {
  display: block;
  max-width: 100%;
  max-height: 220px;
  margin: 1rem auto 0;
  border-radius: 4px;
}

/* Status messages */

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.feedback {
  margin: var(--content-stack-gap) auto 0;
  max-width: 30rem;
  padding: 1rem 1.15rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 4px;
  box-shadow:
    0 2px 8px rgba(36, 30, 22, 0.04),
    inset 0 1px 0 rgba(255, 255, 255, 0.65);
  text-align: center;
}

.feedback-message {
  margin: 0 auto;
  line-height: 1.55;
  max-width: 26rem;
}

.feedback--info .feedback-message {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--muted);
}

.feedback--notice .feedback-message {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 0.98rem;
  font-style: italic;
  color: var(--text);
  white-space: pre-line;
}

.feedback--factual .feedback-message {
  font-family: var(--font-ui);
  font-size: 0.92rem;
  font-style: normal;
  color: var(--text);
  white-space: pre-line;
}

.feedback--success .feedback-message {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  color: var(--muted);
}

.feedback--error {
  border-color: #d4a5a5;
  background: #fff8f8;
  box-shadow: none;
}

.feedback--error .feedback-message {
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-style: normal;
  color: var(--error);
}

/* Result page toolbar */

.artwork-toolbar {
  padding: 1.25rem var(--catalog-inset-x) 0;
}

.artwork-actions {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

#download-btn {
  grid-column: 1;
  grid-row: 1;
}

#repeat-btn {
  grid-column: 2;
  grid-row: 1;
}

#restart-btn {
  grid-column: 3;
  grid-row: 1;
}

.artwork-unavailable-hint {
  display: none;
  grid-column: 1 / 3;
  grid-row: 1;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-height: calc(0.65rem * 2 + 0.95rem * 1.2 + 2px);
  margin: 0;
  padding: 0.65rem 1.1rem;
  border: none;
  border-radius: 4px;
  background: rgba(36, 30, 22, 0.035);
  box-shadow: inset 0 0 0 1px rgba(36, 30, 22, 0.07);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  font-style: normal;
  line-height: 1.45;
  color: var(--muted);
  text-align: center;
  cursor: default;
  user-select: text;
}

.artwork-unavailable-hint:not(.hidden) {
  display: flex;
}

.artwork-actions button {
  width: auto;
  min-width: 0;
  text-align: center;
}

.artwork-actions button.is-busy .busy-label {
  font-size: 0.82rem;
  letter-spacing: -0.01em;
}

.btn-secondary.is-busy .busy-spinner {
  border-color: rgba(36, 30, 22, 0.15);
  border-top-color: var(--accent);
}

.btn-secondary.is-busy .busy-spinner--stage2 {
  border-color: rgba(36, 30, 22, 0.12);
  border-top-color: #dcc9a3;
}

.artwork-feedback {
  margin: var(--content-stack-gap) var(--catalog-inset-x) 0;
}

.catalog-spread.is-empty ~ .artwork-toolbar #download-btn,
.catalog-spread.is-empty ~ .artwork-toolbar #repeat-btn {
  display: none;
}

.result-section {
  margin-top: 0;
}

.catalog-spread.is-collapsed {
  display: none;
}

@media (max-width: 640px) {
  .artwork-toolbar {
    padding-left: var(--catalog-inset-x-narrow);
    padding-right: var(--catalog-inset-x-narrow);
  }

  .artwork-feedback {
    margin-left: var(--catalog-inset-x-narrow);
    margin-right: var(--catalog-inset-x-narrow);
  }
}

/* Museum label preview */

.museum-label {
  --label-scale: 1;
  --label-pad-x: var(--label-pad-x-px, calc(var(--label-padding-x) * var(--label-scale)));
  --label-pad-y: var(--label-pad-y-px, calc(var(--label-padding-y) * var(--label-scale)));
  --label-footer-block: var(
    --label-qr-size-px,
    calc(var(--label-qr-size-mm) * 1mm * var(--label-scale))
  );
  --label-footer-body-gap-scaled: var(
    --label-footer-body-gap-px,
    calc(var(--label-footer-body-gap) * var(--label-scale))
  );
  --label-footer-inner-gap-scaled: var(
    --label-footer-inner-gap-px,
    calc(var(--label-footer-inner-gap) * var(--label-scale))
  );
  position: relative;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  aspect-ratio: var(--label-ratio);
  padding: var(--label-pad-y) var(--label-pad-x);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  box-shadow:
    0 4px 14px rgba(36, 30, 22, 0.09),
    0 1px 3px rgba(36, 30, 22, 0.05);
  font-family: var(--font-tagline);
}

.museum-label:has(.label-footer:not(.hidden)) {
  padding-bottom: calc(
    var(--label-pad-y) + var(--label-footer-block) + var(--label-footer-body-gap-scaled)
  );
}

.label-title,
.label-title-year,
.label-artist,
.label-meta {
  flex-shrink: 0;
}

.label-title {
  margin: 0 0 var(--label-title-margin-bottom-px, calc(var(--label-title-margin-bottom) * var(--label-scale)));
  font-family: Georgia, "Times New Roman", serif;
  font-size: var(--label-title-font-size-px, calc(var(--label-title-font-size) * var(--label-scale)));
  font-weight: 700;
  line-height: 1.25;
}

.label-title-year {
  margin: 0 0 var(--label-title-year-margin-bottom-px, calc(var(--label-title-year-margin-bottom) * var(--label-scale)));
  font-family: Georgia, "Times New Roman", serif;
  font-size: var(--label-title-year-font-size-px, calc(var(--label-title-year-font-size) * var(--label-scale)));
  font-weight: 400;
  line-height: 1.25;
}

.label-artist {
  margin: 0 0 var(--label-artist-margin-bottom-px, calc(var(--label-artist-margin-bottom) * var(--label-scale)));
  font-size: var(--label-artist-font-size-px, calc(var(--label-artist-font-size) * var(--label-scale)));
  line-height: 1.3;
}

.label-artist-fictional {
  color: var(--muted);
}

.label-meta {
  margin: 0 0 var(--label-meta-margin-bottom-px, calc(var(--label-meta-margin-bottom) * var(--label-scale)));
  font-size: var(--label-meta-font-size-px, calc(var(--label-meta-font-size) * var(--label-scale)));
  line-height: 1.25;
  color: var(--muted);
}

.label-text-body {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.label-text-body:not(:has(.label-description:not(.hidden), .label-interpretation:not(.hidden))) {
  flex: 0 0 auto;
}

.label-description {
  margin: var(--label-description-margin-top-px, calc(var(--label-description-margin-top) * var(--label-scale))) 0 0;
  font-size: var(--label-description-font-size-px, calc(var(--label-description-font-size) * var(--label-scale)));
  line-height: var(--label-body-line-height, 1.28);
  flex: 0 0 auto;
  overflow: hidden;
}

.label-interpretation-region {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: center;
}

.label-interpretation-region:not(:has(.label-interpretation:not(.hidden))) {
  flex: 0 0 0;
  min-height: 0;
  overflow: hidden;
}

.label-interpretation {
  margin: 0;
  width: 100%;
  font-size: var(--label-interpretation-font-size-px, calc(var(--label-interpretation-font-size) * var(--label-scale)));
  font-style: italic;
  line-height: var(--label-body-line-height, 1.28);
  overflow: visible;
}

.label-qr-wrap {
  display: flex;
  justify-content: flex-end;
  margin-top: 0;
  padding-top: 0;
  flex-shrink: 0;
}

.label-footer {
  position: absolute;
  left: var(--label-pad-x);
  right: var(--label-pad-x);
  bottom: var(--label-pad-y);
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--label-footer-inner-gap-scaled);
  margin-top: 0;
  padding-top: 0;
  flex-shrink: 0;
  background: #fff;
}

.label-footer.hidden {
  display: none;
}

.label-site-url {
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
  font-size: var(--label-footer-font-size-px, calc(var(--label-footer-font-size) * var(--label-scale)));
  line-height: 1.2;
  color: rgba(92, 86, 78, 0.42);
  word-break: break-all;
}

.museum-label .label-qr {
  display: block;
  width: var(--label-qr-size-px, calc(var(--label-qr-size-mm) * 1mm * var(--label-scale)));
  height: var(--label-qr-size-px, calc(var(--label-qr-size-mm) * 1mm * var(--label-scale)));
  shape-rendering: crispEdges;
}

.label-raw {
  margin: 0;
  flex: 1 1 auto;
  min-height: 0;
  overflow: hidden;
  white-space: pre-wrap;
  font-size: var(--label-raw-font-size-px, calc(var(--label-raw-font-size) * var(--label-scale)));
  line-height: 1.35;
}

/* Dialogs */

body.modal-open {
  overflow: hidden;
}

.legal-modal,
.flag-modal,
.download-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
}

.legal-modal-backdrop,
.flag-modal-backdrop,
.download-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(26, 26, 26, 0.45);
  backdrop-filter: blur(6px);
}

.legal-modal-panel,
.flag-modal-panel,
.download-modal-panel {
  position: relative;
  z-index: 1;
  width: min(100%, 34rem);
  max-height: min(85vh, 720px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.35rem 1.35rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(26, 26, 26, 0.18);
}

.flag-modal-panel,
.download-modal-panel {
  overflow: auto;
  display: block;
}

.legal-modal-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.85rem;
  flex-shrink: 0;
}

.legal-modal-header h2,
.flag-modal-panel h2,
.download-modal-panel h2 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
}

.legal-modal-close {
  flex-shrink: 0;
  margin: 0;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.82rem;
  cursor: pointer;
}

.legal-modal-body,
.flag-modal-body,
.download-modal-body {
  margin: 0 0 1rem;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--text);
  white-space: pre-line;
}

.legal-modal-body {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  margin-bottom: 0;
  white-space: normal;
  padding-right: 0.15rem;
}

.legal-intro {
  margin: 0 0 0.85rem;
  white-space: pre-line;
}

.legal-section {
  margin-bottom: 0.35rem;
  border: none;
  border-radius: 0;
  background: transparent;
}

.legal-section:last-child {
  margin-bottom: 0;
}

.legal-section summary {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  padding: 0.2rem 0;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.88rem;
  list-style: none;
}

.legal-section summary::-webkit-details-marker {
  display: none;
}

.legal-section summary::marker {
  content: "";
}

.legal-section summary::before {
  content: ">";
  display: inline-block;
  flex-shrink: 0;
  width: 0.75rem;
  font-weight: 600;
  line-height: 1.45;
  transition: transform 0.15s ease;
}

.legal-section[open] summary::before {
  transform: rotate(90deg);
}

.legal-section-body {
  padding: 0.15rem 0 0.5rem 1.15rem;
}

.legal-section-body p {
  margin: 0 0 0.5rem;
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--text);
}

.legal-section-body p:last-child {
  margin-bottom: 0;
}

.flag-form {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 0.25rem;
}

.flag-field-label {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}

.flag-field-select,
.flag-field-textarea {
  width: 100%;
  margin: 0;
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 0.88rem;
  line-height: 1.4;
}

.flag-field-textarea {
  resize: vertical;
  min-height: 4.5rem;
}

.flag-field-select:focus,
.flag-field-textarea:focus {
  outline: 2px solid rgba(47, 47, 47, 0.25);
  outline-offset: 1px;
}

.flag-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

.download-modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

/* Responsive layout — breakpoint 640px */

@media (max-width: 640px) {
  .upload-form {
    max-width: none;
  }

  .intro-line {
    display: block;
  }

  .intro-line + .intro-line::before {
    content: none;
  }

  .upload-card,
  .upload-card .drop-zone {
    min-height: 160px;
  }

  .upload-actions button {
    width: min(100%, 18rem);
  }

  .artwork-actions {
    grid-template-columns: 1fr;
  }

  #download-btn,
  #repeat-btn,
  #restart-btn {
    grid-column: 1;
    grid-row: auto;
  }

  .artwork-unavailable-hint:not(.hidden) {
    grid-column: 1;
    grid-row: 1;
  }

  .catalog-spread.is-empty ~ .artwork-toolbar #restart-btn {
    grid-row: 2;
  }
}