body {
  background:
    radial-gradient(circle at top right, rgba(234, 179, 8, 0.14), transparent 28rem),
    linear-gradient(180deg, #111827 0%, var(--bg) 42%, #05070b 100%);
}

select,
textarea {
  font: inherit;
}

.muscle-shell {
  max-width: 860px;
}

.muscle-view {
  display: grid;
  gap: 16px;
}

.muscle-title,
.view-header,
.exercise-run-card,
.rest-panel,
.plan-form,
.plan-card,
.exercise-item,
.inline-message {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(25, 33, 49, 0.98), rgba(18, 23, 34, 0.98));
  box-shadow: var(--shadow);
}

.muscle-title,
.view-header,
.plan-form {
  padding: 18px;
}

.muscle-title h1,
.view-header h1,
.run-view h1 {
  margin-bottom: 8px;
  font-size: clamp(2.4rem, 13vw, 4rem);
  line-height: 1;
  text-transform: uppercase;
}

.muscle-title p:last-child,
.view-header p:last-child {
  margin-bottom: 0;
  color: #fde68a;
  font-weight: 800;
}

.category-grid,
.plans-list,
.exercise-list {
  display: grid;
  gap: 12px;
}

.category-card {
  display: grid;
  gap: 10px;
  min-height: 132px;
  padding: 18px;
  border: 1px solid rgba(234, 179, 8, 0.5);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #1c2432, #0f151f);
  color: var(--text);
  cursor: pointer;
  text-align: left;
  box-shadow: inset 4px 0 0 rgba(234, 179, 8, 0.9);
}

.category-card span {
  font-size: 1.45rem;
  font-weight: 900;
  text-transform: uppercase;
}

.category-card small {
  max-width: 34ch;
  font-size: 0.95rem;
}

.start-mode-options {
  display: grid;
  gap: 12px;
}

.start-mode-option {
  display: grid;
  gap: 8px;
  min-height: 112px;
  padding: 16px;
  border: 1px solid rgba(234, 179, 8, 0.5);
  border-radius: var(--radius);
  background: linear-gradient(180deg, #1c2432, #0f151f);
  color: var(--text);
  cursor: pointer;
  text-align: left;
}

.start-mode-option strong {
  font-size: 1.12rem;
}

.start-mode-option span {
  color: var(--muted);
  line-height: 1.45;
}

.start-mode-option:hover,
.start-mode-option:focus-visible {
  border-color: #fde68a;
  outline: none;
}

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.view-header .primary-button {
  flex: 0 0 auto;
}

.inline-message {
  padding: 12px 14px;
  color: #fde68a;
  font-weight: 800;
}

.plan-card,
.exercise-item {
  display: grid;
  gap: 12px;
  padding: 14px;
}

.plan-card strong,
.exercise-item strong {
  display: block;
  margin-bottom: 5px;
  font-size: 1.08rem;
}

.plan-card span,
.exercise-item span,
.readonly-value {
  color: var(--muted);
}

.plan-actions,
.exercise-actions,
.bottom-actions,
.editor-actions,
.run-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.plan-actions button,
.exercise-actions button {
  min-height: 42px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.empty-state {
  margin: 0;
  padding: 16px;
  border: 1px dashed rgba(234, 179, 8, 0.45);
  border-radius: var(--radius);
  color: var(--muted);
}

.plan-form {
  display: grid;
  gap: 16px;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
}

.form-field input,
.form-field select {
  width: 100%;
  min-height: 50px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #0f1521;
  color: var(--text);
}

.readonly-value {
  display: inline-flex;
  align-items: center;
  min-height: 50px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #0f1521;
}

.rest-toggle,
.exercise-editor {
  display: grid;
  gap: 14px;
  padding: 14px;
  border: 1px solid rgba(234, 179, 8, 0.25);
  border-radius: var(--radius);
  background: rgba(8, 10, 15, 0.48);
}

.rest-toggle {
  grid-template-columns: 1fr auto;
  align-items: center;
}

.rest-toggle h2 {
  margin-bottom: 6px;
  font-size: 1rem;
}

.rest-toggle p,
.form-status,
.status-message {
  margin: 0;
  color: var(--muted);
}

.switch {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 900;
}

.switch input {
  width: 24px;
  height: 24px;
  accent-color: var(--muscle);
}

.exercise-fields {
  display: grid;
  gap: 10px;
}

.exercise-actions button:first-child,
.exercise-actions button:nth-child(2) {
  width: 42px;
  padding: 0;
}

.form-status {
  min-height: 22px;
  color: #fde68a;
  font-weight: 800;
}

.run-view {
  text-align: center;
}

.run-view > .eyebrow {
  margin-bottom: -8px;
}

.list-run-exercises {
  display: grid;
  gap: 12px;
  text-align: left;
}

.list-run-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(25, 33, 49, 0.98), rgba(18, 23, 34, 0.98));
  box-shadow: var(--shadow);
}

.list-run-card h3,
.list-run-card p {
  margin: 0;
}

.list-run-card h3 {
  margin-bottom: 6px;
  font-size: 1.08rem;
}

.list-run-card p {
  color: var(--muted);
  font-weight: 800;
}

.list-run-card.is-complete {
  border-color: #64748b;
  background: linear-gradient(180deg, #374151, #252b35);
}

.list-run-card.is-complete h3,
.list-run-card.is-complete p {
  color: #cbd5e1;
}

.list-done-button {
  min-width: 104px;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-soft);
  color: var(--text);
  cursor: pointer;
  font-weight: 900;
}

.list-done-button[aria-pressed="true"] {
  border-color: #4ade80;
  background: #15803d;
  color: #fff;
}

.list-done-button:focus-visible {
  outline: 3px solid #fde68a;
  outline-offset: 2px;
}

.exercise-run-card {
  display: grid;
  gap: 10px;
  padding: 20px;
}

.run-progress,
.run-detail {
  margin: 0;
  color: var(--muted);
  font-weight: 800;
}

.exercise-run-card h2 {
  margin: 0;
  font-size: clamp(1.8rem, 9vw, 3.3rem);
  line-height: 1.05;
  text-transform: uppercase;
}

.run-main-metric {
  display: block;
  color: #fde68a;
  font-size: clamp(2.4rem, 16vw, 5rem);
  line-height: 1;
}

.rest-panel {
  display: grid;
  gap: 10px;
  justify-items: center;
  padding: 18px;
  background: linear-gradient(180deg, rgba(120, 53, 15, 0.9), rgba(18, 23, 34, 0.98));
}

.rest-panel p {
  margin: 0;
  color: #fde68a;
  font-weight: 900;
  text-transform: uppercase;
}

.rest-panel strong {
  font-size: clamp(3rem, 18vw, 6rem);
  line-height: 1;
}

.rest-panel span {
  color: var(--text);
  font-weight: 800;
}

.run-actions,
.bottom-actions {
  justify-content: center;
}

#run-view .run-actions {
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.run-home-action {
  justify-self: center;
}

@media (min-width: 620px) {
  .category-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .start-mode-options {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .plan-card,
  .exercise-item {
    grid-template-columns: 1fr auto;
    align-items: center;
  }

  .exercise-fields {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .exercise-fields .wide {
    grid-column: span 2;
  }
}

@media (max-width: 560px) {
  .view-header,
  .rest-toggle {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .view-header {
    display: grid;
  }

  .view-header .primary-button,
  .bottom-actions > *,
  .run-actions > *,
  .editor-actions > * {
    width: 100%;
  }

  .list-run-card {
    grid-template-columns: 1fr;
  }

  .list-done-button {
    width: 100%;
  }
}