.checklib-builder-page {
  min-height: 100vh;
  min-height: 100dvh;
  background:
    radial-gradient(circle at top left, rgba(49, 132, 155, 0.16), transparent 34rem),
    var(--bg-page);
}

.builder-app {
  max-width: none;
  margin: 0;
  padding: 0 0.75rem 1rem;
}

.builder-shell {
  position: relative;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 0 1rem;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.builder-header-container {
  margin: 0 -0.75rem 0.75rem;
  width: calc(100% + 1.5rem);
}

.builder-app-header {
  margin-bottom: 0;
}

.builder-header-container .theme-toggle {
  position: static;
}

.builder-hero-card {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  padding: clamp(0.85rem, 1.6vw, 1.15rem);
  border: 1px solid rgba(49, 132, 155, 0.18);
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(49, 132, 155, 0.24), rgba(23, 33, 42, 0.08)),
    var(--surface-raised);
  box-shadow: var(--shadow-card);
}

.builder-kicker {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--cyan-accent);
  margin-bottom: 0.25rem;
}

.builder-hero-copy h1 {
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  line-height: 1.15;
  color: var(--text-heading);
  margin-bottom: 0.3rem;
}

.builder-hero-copy p:last-child {
  color: var(--text-primary);
  max-width: 70ch;
  font-size: 0.95rem;
}

.builder-hero-actions {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
}

.builder-hero-actions button {
  width: 100%;
  margin: 0;
  min-height: 42px;
  padding: 0.55rem 0.75rem;
}

.builder-layout {
  display: grid;
  gap: 0.85rem;
}

.builder-editor-statusbar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.builder-editor-stat {
  padding: 0.65rem 0.72rem;
  border: 1px solid rgba(49, 132, 155, 0.16);
  border-radius: 12px;
  background: var(--surface-card);
  box-shadow: var(--shadow-soft);
}

.builder-editor-stat__label {
  display: block;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-heading);
  font-weight: 600;
  margin-bottom: 0.18rem;
}

#builder-dirty-state.is-dirty {
  color: var(--warning);
}

.builder-library,
.builder-editor {
  border: 1px solid rgba(49, 132, 155, 0.16);
  border-radius: 16px;
  padding: clamp(0.75rem, 1.4vw, 1rem);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.14), rgba(255,255,255,0.03)),
    var(--surface-raised);
  box-shadow: var(--shadow-card);
}

.builder-section-header {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  margin-bottom: 0.75rem;
}

.builder-section-header--framed {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.68rem 0.75rem;
  border: 1px solid rgba(49, 132, 155, 0.16);
  border-radius: 12px;
  background:
    linear-gradient(135deg, rgba(49, 132, 155, 0.12), rgba(23, 33, 42, 0.02)),
    var(--surface-card);
  box-shadow: var(--shadow-soft);
}

.builder-section-header h2 {
  font-size: 1rem;
  color: var(--text-heading);
}

.builder-section-header p {
  font-size: 0.78rem;
  color: var(--text-heading);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.builder-section-chip {
  flex-shrink: 0;
  padding: 0.28rem 0.56rem;
  border: 1px solid rgba(49, 132, 155, 0.22);
  border-radius: 999px;
  background: rgba(49, 132, 155, 0.12);
  color: var(--text-heading);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.builder-library-list,
.builder-sections {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.builder-card {
  border: 1px solid rgba(49, 132, 155, 0.14);
  border-radius: 12px;
  padding: 0.75rem;
  background: var(--surface-card);
  box-shadow: var(--shadow-soft);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.builder-card__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.35rem;
}

.builder-card__title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.builder-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.85rem;
  font-size: 0.8rem;
  color: var(--text-heading);
}

.builder-card__meta span {
  white-space: nowrap;
}

.builder-card__actions {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.45rem;
  margin-top: 0.65rem;
}

.builder-card__actions button {
  width: 100%;
  margin: 0;
}

.builder-card.is-selected {
  border-color: var(--accent);
  box-shadow: inset 0 0 0 1px rgba(0, 158, 195, 0.22), 0 10px 22px rgba(14, 73, 92, 0.1);
  background:
    linear-gradient(180deg, rgba(0,158,195,0.12), rgba(0,158,195,0.04)),
    var(--surface-card);
}

.builder-card[data-checklist-id] {
  cursor: pointer;
}

.builder-card[data-checklist-id]:hover {
  transform: translateY(-1px);
  box-shadow: 0 10px 22px rgba(27, 31, 36, 0.16);
}

.builder-editor-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.builder-field {
  display: flex;
  flex-direction: column;
}

.builder-field label {
  display: block;
  font-weight: 500;
  color: var(--text-heading);
  margin-bottom: 0.38rem;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.builder-field input,
.builder-field textarea,
.builder-field select {
  width: 100%;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  background-color: var(--input-bg);
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.builder-field input:focus,
.builder-field textarea:focus,
.builder-field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 158, 195, 0.16);
}

.builder-field textarea {
  min-height: 84px;
  resize: vertical;
}

.builder-metadata-card {
  border: 1px solid var(--item-border);
  border-radius: 16px;
  padding: 0.95rem;
  background:
    linear-gradient(180deg, rgba(49,132,155,0.08), rgba(49,132,155,0.03)),
    var(--surface-card);
  box-shadow: var(--shadow-soft);
}

.builder-metadata-card__header {
  margin-bottom: 0.85rem;
}

.builder-metadata-card__header h3 {
  margin: 0 0 0.18rem;
  color: var(--text-heading);
}

.builder-metadata-card__header p {
  margin: 0;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.builder-metadata-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}

.builder-section-card {
  border: 1px solid var(--item-border);
  border-left: 4px solid transparent;
  border-radius: 16px;
  padding: 0.9rem;
  background: var(--surface-card);
  box-shadow: var(--shadow-soft);
}

.builder-section-card:hover {
  border-left-color: var(--accent);
}

.builder-section-card__header {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 0.75rem;
}

.builder-field--grow {
  flex: 1;
}

.builder-section-card__actions,
.builder-task-row__actions,
.builder-editor-actions,
.builder-empty-state__actions {
  display: grid;
  gap: 0.55rem;
}

.builder-section-card__actions {
  grid-template-columns: repeat(4, 1fr);
}

.builder-task-list {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.builder-task-list:empty::before {
  content: "No tasks added yet.";
  display: block;
  padding: 0.85rem;
  border: 1px dashed var(--border-color);
  border-radius: 12px;
  color: var(--text-heading);
  background: rgba(255,255,255,0.22);
}

.builder-task-row {
  border: 1px solid rgba(76, 85, 96, 0.12);
  border-left: 4px solid rgba(76, 85, 96, 0.16);
  border-radius: 14px;
  padding: 0.8rem;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.5), rgba(255,255,255,0.2)),
    var(--surface-card);
  box-shadow: var(--shadow-soft);
}

.builder-task-row__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem;
  margin-bottom: 0.55rem;
}

.builder-task-row__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 0.12rem 0.48rem;
  border-radius: 999px;
  background: rgba(76, 85, 96, 0.12);
  color: #1a1818;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.builder-pass-answer-field {
  margin-top: 0.55rem;
}

.builder-task-row__mini-actions {
  display: inline-grid;
  grid-template-columns: repeat(2, auto);
  gap: 0.4rem;
}

.builder-task-row__mini-actions button {
  margin: 0;
  min-width: 54px;
  padding: 0.4rem 0.55rem;
  font-size: 0.78rem;
  box-shadow: none;
}

.builder-task-row__actions {
  margin-top: 0.6rem;
  grid-template-columns: repeat(3, 1fr);
}

.builder-section-card.is-collapsed .builder-task-list {
  display: none;
}

.builder-section-card.is-collapsed {
  opacity: 0.96;
}

.builder-section-card.is-collapsed .builder-section-card__header {
  margin-bottom: 0;
}

.builder-section-card__actions button,
.builder-task-row__actions button,
.builder-editor-actions button {
  width: 100%;
  margin: 0;
}

.builder-editor-actions-shell {
  position: sticky;
  bottom: 0.65rem;
  z-index: 20;
  margin-top: 0.35rem;
  padding-top: 0.35rem;
}

.builder-editor-actions {
  grid-template-columns: 1fr 1fr 1.15fr;
  margin-top: 0;
  padding: 0.65rem;
  border: 1px solid rgba(76, 85, 96, 0.18);
  border-radius: 16px;
  background: rgba(231, 240, 245, 0.94);
  backdrop-filter: blur(12px);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.18);
}

#builder-save-checklist {
  background: linear-gradient(135deg, #3f6f5b, #2f7d4b);
  border-color: rgba(47, 125, 75, 0.35);
}

#builder-add-section {
  background: linear-gradient(135deg, #5f6975, #74808d);
}

.builder-empty-state,
.builder-editor-empty {
  border: 1px dashed var(--border-color);
  border-radius: 16px;
  padding: 1rem;
  text-align: center;
  color: var(--text-primary);
  background: rgba(53, 53, 53, 0.11);
}

.builder-validation-summary {
  border: 1px solid rgba(185, 48, 48, 0.28);
  border-radius: 14px;
  padding: 0.85rem 0.9rem;
  background: rgba(185, 48, 48, 0.08);
  color: var(--text-primary);
}

.builder-validation-summary h3 {
  margin: 0 0 0.45rem;
  font-size: 0.95rem;
  color: var(--error);
}

.builder-validation-summary ul {
  margin: 0;
  padding-left: 1.1rem;
}

.builder-validation-summary li + li {
  margin-top: 0.2rem;
}

.builder-save-status {
  border: 1px solid rgba(47, 125, 75, 0.28);
  border-radius: 14px;
  padding: 0.85rem 0.9rem;
  background: rgba(47, 125, 75, 0.08);
  color: var(--text-primary);
}

.builder-save-status.is-error {
  border-color: rgba(185, 48, 48, 0.28);
  background: rgba(185, 48, 48, 0.08);
}

.builder-save-status.is-info {
  border-color: rgba(74, 85, 96, 0.28);
  background: rgba(74, 85, 96, 0.08);
}

.builder-field input.error-highlight,
.builder-field textarea.error-highlight {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(185, 48, 48, 0.14);
}

.builder-modal::backdrop {
  background: rgba(0, 0, 0, 0.42);
}

.builder-modal {
  border: none;
  padding: 0;
  background: transparent;
  width: min(92vw, 520px);
}

.builder-modal__content {
  background-color: var(--bg-modal);
  padding: 20px;
  border-radius: 16px;
  box-shadow: var(--shadow-strong);
  border: 1px solid var(--item-border);
}

.builder-modal__content h2 {
  color: var(--text-heading);
  margin-bottom: 0.75rem;
}

.builder-modal__content input[type="file"] {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: var(--input-bg);
  color: var(--text-primary);
}

.builder-modal__actions {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 1rem;
}

/* Main-app aligned Builder surface pass */
.builder-hero-card {
  border: 1px solid rgba(33, 132, 155, 0.16);
  border-radius: 16px;
  padding: 0.9rem;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.96), rgba(237,249,252,0.82)),
    var(--surface-raised);
  color: var(--text-primary);
}

.builder-hero-copy h1 {
  color: var(--text-heading);
  font-size: clamp(1.2rem, 2vw, 1.6rem);
}

.builder-hero-copy p:last-child {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.builder-hero-card .builder-kicker {
  color: var(--accent);
}

.builder-hero-actions button {
  min-height: 44px;
  padding: 0.5rem 0.68rem;
  border-color: rgba(0, 158, 195, 0.24);
  background: var(--btn-bg);
  color: var(--btn-secondary-text);
}

.dark-theme .builder-hero-card {
  background:
    linear-gradient(180deg, rgba(0,174,239,0.065), rgba(255,255,255,0.012)),
    var(--surface-card);
  border-color: rgba(73, 104, 119, 0.32);
  color: var(--text-primary);
}

.dark-theme .builder-hero-copy h1 {
  color: var(--text-heading);
}

.dark-theme .builder-hero-copy p:last-child {
  color: var(--text-muted);
}

.builder-layout {
  gap: 0.72rem;
}

.builder-library,
.builder-editor {
  border: 0;
  border-radius: 0;
  padding: 0;
  background: transparent;
  box-shadow: none;
}

.builder-section-header--framed,
.builder-editor-statusbar,
.builder-editor-form > .builder-field,
.builder-metadata-card,
.builder-section-card,
.builder-card {
  border: 1px solid rgba(33, 132, 155, 0.16);
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94), rgba(237,249,252,0.66)),
    var(--surface-card);
  box-shadow: var(--shadow-card);
}

.dark-theme .builder-section-header--framed,
.dark-theme .builder-editor-statusbar,
.dark-theme .builder-editor-form > .builder-field,
.dark-theme .builder-metadata-card,
.dark-theme .builder-section-card,
.dark-theme .builder-card {
  background:
    linear-gradient(180deg, rgba(0,174,239,0.065), rgba(255,255,255,0.012)),
    var(--surface-card);
  border-color: rgba(73, 104, 119, 0.32);
}

.builder-section-header--framed {
  padding: 0.72rem;
  margin-bottom: 0.62rem;
}

.builder-section-header h2 {
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.15;
}

.builder-section-header p {
  font-size: 0.72rem;
  color: var(--text-heading);
}

.builder-section-chip {
  padding: 0.26rem 0.52rem;
  font-size: 0.68rem;
}

.builder-editor-statusbar {
  padding: 0.5rem;
  gap: 0.45rem;
}

.builder-editor-stat {
  padding: 0.52rem 0.58rem;
  border-radius: 12px;
  background: rgba(255,255,255,0.72);
  box-shadow: none;
}

.dark-theme .builder-editor-stat {
  background: rgba(5, 13, 18, 0.84);
  border-color: rgba(73, 104, 119, 0.3);
}

.builder-editor-stat__label {
  font-size: 0.68rem;
  margin-bottom: 0.12rem;
}

.builder-editor-stat strong {
  font-size: 0.92rem;
}

.builder-editor-form {
  gap: 0.62rem;
}

.builder-editor-form > .builder-field {
  padding: 0.75rem;
}

.builder-field label {
  margin-bottom: 0.32rem;
  font-size: 0.74rem;
}

.builder-field input,
.builder-field textarea,
.builder-field select {
  min-height: 40px;
  padding: 0.56rem 0.66rem;
  border-radius: 12px;
  font-size: 0.9rem;
}

.builder-field textarea {
  min-height: 76px;
}

.builder-metadata-card {
  padding: 0.78rem;
}

.builder-metadata-card__header {
  margin-bottom: 0.68rem;
}

.builder-metadata-card__header h3 {
  font-size: 1rem;
  line-height: 1.15;
}

.builder-metadata-card__header p {
  font-size: 0.82rem;
  line-height: 1.35;
  color: var(--text-heading);
}

.builder-metadata-grid {
  gap: 0.62rem;
  margin-bottom: 0.7rem;
}

.builder-sections {
  gap: 0.62rem;
}

.builder-section-card {
  padding: 0.78rem;
  border-left: 4px solid rgba(33, 132, 155, 0.18);
}

.builder-section-card:hover {
  border-left-color: var(--accent);
}

.builder-section-card__header {
  gap: 0.55rem;
  margin-bottom: 0.62rem;
}

.builder-section-card__actions {
  gap: 0.42rem;
}

.builder-section-card__actions button,
.builder-task-row__actions button,
.builder-editor-actions button,
.builder-card__actions button {
  min-height: 38px;
  padding: 0.45rem 0.58rem;
  font-size: 0.8rem;
}

.builder-task-list {
  gap: 0.5rem;
}

.builder-task-row {
  border: 1px solid rgba(76, 85, 96, 0.14);
  border-left: 4px solid rgba(76, 85, 96, 0.18);
  border-radius: 14px;
  padding: 0.68rem;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.88), rgba(237,249,252,0.48)),
    var(--surface-card);
  box-shadow: var(--shadow-soft);
}

.dark-theme .builder-task-row {
  background:
    linear-gradient(180deg, rgba(0,174,239,0.055), rgba(255,255,255,0.012)),
    var(--surface-card);
  border-color: rgba(73, 104, 119, 0.32);
}

.builder-task-row__top {
  margin-bottom: 0.48rem;
}

.builder-task-row__badge {
  min-height: 22px;
  padding: 0.1rem 0.46rem;
  font-size: 0.66rem;
  background: rgba(49, 132, 155, 0.12);
  color: var(--text-heading);
}

.builder-task-row__mini-actions button {
  min-height: 32px;
  padding: 0.34rem 0.48rem;
  font-size: 0.74rem;
}

.builder-task-row__actions {
  margin-top: 0.5rem;
  gap: 0.42rem;
}

.builder-card {
  padding: 0.68rem;
}

.builder-card__title {
  font-size: 0.92rem;
}

.builder-card__meta {
  gap: 0.32rem 0.65rem;
  font-size: 0.76rem;
}

.builder-editor-actions-shell {
  bottom: 0.5rem;
}

.builder-editor-actions {
  grid-template-columns: 1fr 1fr 1.15fr;
  padding: 0.55rem;
  border-radius: 16px;
  background: rgba(237, 249, 252, 0.94);
}

.dark-theme .builder-editor-actions {
  background: rgba(2, 6, 9, 0.94);
  border: 1px solid rgba(0, 174, 239, 0.24);
}

.dark-theme .builder-field input,
.dark-theme .builder-field textarea,
.dark-theme .builder-field select,
.dark-theme .builder-modal__content input[type="file"] {
  background-color: #050a0e;
  border-color: rgba(73, 104, 119, 0.5);
  color: #f4f8fb;
}

.dark-theme .builder-field input::placeholder,
.dark-theme .builder-field textarea::placeholder {
  color: rgba(169, 193, 207, 0.68);
}

.dark-theme .builder-modal__content {
  background:
    linear-gradient(180deg, rgba(0,174,239,0.055), rgba(0,0,0,0.12)),
    var(--bg-modal);
  border-color: rgba(73, 104, 119, 0.36);
}

.dark-theme .builder-empty-state,
.dark-theme .builder-editor-empty,
.dark-theme .builder-task-list:empty::before,
.dark-theme .builder-save-status {
  background: rgba(5, 13, 18, 0.82);
  border-color: rgba(73, 104, 119, 0.32);
  color: var(--text-primary);
}

.dark-theme .builder-task-row__badge,
.dark-theme .builder-section-chip {
  background: rgba(0, 174, 239, 0.16);
  border-color: rgba(0, 174, 239, 0.42);
  color: #d9f6ff;
}

.builder-modal {
  width: min(92vw, 560px);
}

.builder-modal__content {
  max-height: 82vh;
  overflow: auto;
  padding: 0.9rem;
}

@media (min-width: 860px) {
  .builder-layout {
    grid-template-columns: 320px minmax(0, 1fr);
  }

  .builder-hero-actions {
    width: 390px;
  }
}

@media (max-width: 860px) {
  .builder-app {
    padding: 0 0.5rem 0.8rem;
  }

  .builder-header-container {
    margin: 0 -0.5rem 0.62rem;
    width: calc(100% + 1rem);
  }

  .builder-hero-card {
    padding: 0.75rem;
  }

  .builder-hero-actions {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.45rem;
  }

  .builder-editor-statusbar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .builder-metadata-grid {
    grid-template-columns: 1fr;
  }

  .builder-section-card__actions,
  .builder-task-row__actions,
  .builder-editor-actions,
  .builder-card__actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .builder-app {
    padding: 0 0.4rem 0.7rem;
  }

  .builder-hero-actions,
  .builder-editor-statusbar,
  .builder-section-card__actions,
  .builder-task-row__actions,
  .builder-editor-actions,
  .builder-card__actions {
    grid-template-columns: 1fr;
  }

  .builder-section-header--framed,
  .builder-editor-statusbar,
  .builder-editor-form > .builder-field,
  .builder-metadata-card,
  .builder-section-card,
  .builder-card {
    border-radius: 14px;
  }

  .builder-field input,
  .builder-field textarea,
  .builder-field select {
    font-size: 0.86rem;
  }

  .builder-editor-actions-shell {
    position: static;
  }
}

.builder-hidden {
  display: none !important;
}

@media (min-width: 860px) {
  .builder-layout {
    grid-template-columns: 360px minmax(0, 1fr);
    align-items: start;
  }

  .builder-editor-statusbar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .builder-hero-card {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .builder-hero-actions {
    width: 420px;
  }

  .builder-section-card__header {
    flex-direction: row;
    align-items: center;
  }

  .builder-section-card__actions {
    grid-template-columns: repeat(4, auto);
    justify-content: end;
  }
}

@media (max-width: 860px) {
  .builder-section-header--framed {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .builder-app {
    padding: 0.86rem;
  }

  .builder-shell {
    padding: 0.86rem;
    border-radius: 20px;
  }

  .builder-hero-card {
    padding: 0.85rem;
  }

  .builder-card__actions,
  .builder-editor-actions,
  .builder-empty-state__actions,
  .builder-task-row__actions,
  .builder-section-card__actions,
  .builder-editor-statusbar,
  .builder-task-row__mini-actions {
    grid-template-columns: 1fr;
  }

  .builder-metadata-grid {
    grid-template-columns: 1fr;
  }

  .builder-hero-actions {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .builder-card__meta {
    flex-direction: column;
    gap: 0.3rem;
  }

  .builder-task-row {
    padding: 0.72rem;
  }

  .builder-hero-copy h1 {
    font-size: 1.15rem;
  }
}

.checklib-builder-page .app-nav__item.is-active {
  color: #ffffff;
}

@media (min-width: 960px) {
  .checklib-builder-page .builder-app {
    min-height: 100vh;
  }
}

/* Dashboard-style Builder layout pass */
.checklib-builder-page {
  background: var(--bg-page);
}

.builder-dashboard-style {
  max-width: none;
  margin: 0;
  padding: 0.75rem;
}

.builder-dashboard-shell {
  max-width: none;
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

.builder-header-container {
  margin: -0.75rem -0.75rem 0.75rem;
  width: calc(100% + 1.5rem);
}

.builder-app-header {
  margin-bottom: 0;
}

.builder-workspace-banner .loaded-checksheet-banner__main {
  gap: 0.5rem;
}

.builder-workspace-banner .loaded-checksheet-banner__intro {
  margin: 0;
  color: var(--accent);
}

.builder-dashboard-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.62rem;
  margin-bottom: 0.62rem;
}

.builder-dashboard-overview {
  margin: 0;
}

.builder-dashboard-overview .runner-readiness-ring span {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.builder-dashboard-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.62rem;
}

.builder-dashboard-actions button {
  width: 100%;
  margin: 0;
  min-height: 44px;
}

.builder-layout {
  gap: 0.62rem;
}

.builder-library,
.builder-editor {
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.builder-section-header--framed {
  margin-bottom: 0.5rem;
}

.builder-editor-statusbar {
  margin-bottom: 0.62rem;
}

@media (min-width: 860px) {
  .builder-dashboard-panel {
    grid-template-columns: minmax(0, 1fr) 300px;
    align-items: stretch;
  }

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

  .builder-layout {
    grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .builder-dashboard-style {
    padding: 0 1.25rem 1.5rem;
  }

  .builder-header-container {
    margin: 0 -1.25rem 0.9rem;
    width: calc(100% + 2.5rem);
  }
}

@media (max-width: 600px) {
  .builder-dashboard-style {
    padding: 0.5rem;
  }

  .builder-dashboard-shell {
    padding: 0;
    border-radius: 0;
  }

  .builder-header-container {
    margin: -0.5rem -0.5rem 0.65rem;
    width: calc(100% + 1rem);
  }

  .builder-app-header {
    align-items: center;
    flex-direction: row;
  }

  .builder-workspace-banner {
    align-items: flex-start;
    flex-direction: column;
  }

  .builder-workspace-banner .loaded-checksheet-banner__main {
    align-items: flex-start;
    flex-direction: column;
    width: 100%;
  }

  .builder-workspace-banner .loaded-checksheet-banner__intro {
    width: auto;
  }

  .builder-dashboard-panel,
  .builder-dashboard-actions,
  .builder-layout {
    grid-template-columns: 1fr;
  }

  .builder-dashboard-overview {
    align-items: flex-start;
  }
}

/* Builder nav theme toggle alignment */
@media (min-width: 960px) {
  .checklib-builder-page .app-nav {
    display: flex;
    flex-direction: column;
  }

  .checklib-builder-page .app-nav__theme-toggle {
    margin-top: auto !important;
    min-height: 44px;
    width: 100% !important;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 0.52rem;
    padding: 0.48rem 0.55rem;
    border-radius: 10px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-heading);
    box-shadow: none;
    font-size: 0.86rem;
    font-weight: 600;
    line-height: 1.05;
  }

  .checklib-builder-page .app-nav__theme-toggle::before {
    content: "";
    width: 1.45rem;
    height: 1.45rem;
    display: grid;
    place-items: center;
    flex: 0 0 auto;
    border-radius: 0;
    background: transparent;
    color: inherit;
    font-size: 0.86rem;
    line-height: 1;
  }

  .checklib-builder-page .app-nav__theme-toggle:hover,
  .checklib-builder-page .app-nav__theme-toggle:focus-visible {
    outline: none;
    background: rgba(0, 158, 195, 0.1);
    border-color: rgba(0, 158, 195, 0.32);
    color: #008bb7;
    transform: translateY(-1px);
  }

  .checklib-builder-page .app-nav__theme-toggle:hover::before,
  .checklib-builder-page .app-nav__theme-toggle:focus-visible::before {
    background: transparent;
    box-shadow: none;
  }
}