:root {
  color-scheme: dark;
  --bg: #101414;
  --surface: #1a2020;
  --surface-high: #232b2a;
  --primary: #9bd8c4;
  --primary-on: #07372d;
  --accent: #e2c46d;
  --text: #eef4f1;
  --muted: #a9b7b2;
  --outline: #43514e;
  --danger: #ffb4ab;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.5;
}

button,
input,
select {
  font: inherit;
}

.app-shell {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: 18px 14px 28px;
}

.app-header {
  margin-bottom: 18px;
}

body[data-mode="workout"] .app-header,
body[data-mode="rest"] .app-header {
  margin-bottom: 10px;
}

body[data-mode="workout"] .eyebrow,
body[data-mode="rest"] .eyebrow {
  display: none;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(2rem, 12vw, 3.75rem);
  line-height: 1;
}

body[data-mode="workout"] h1,
body[data-mode="rest"] h1 {
  font-size: 1.35rem;
}

h2 {
  margin-bottom: 12px;
  font-size: 1rem;
}

.settings {
  display: grid;
  gap: 12px;
  margin-bottom: 16px;
}

.mode-panel {
  display: grid;
}

.setup-mode {
  gap: 16px;
}

.setup-start {
  width: 100%;
  min-height: 58px;
  font-size: 1.05rem;
}

.workout-mode {
  gap: 12px;
}

.workout-mode.resting .workout-details,
.workout-mode.resting .current-rung-scheme,
.workout-mode.resting .timer-text,
.workout-mode.resting .plan-section,
.workout-mode.resting .path-section {
  display: none;
}

label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 10px 12px;
}

input:focus,
select:focus,
button:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--primary), transparent 45%);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

.rung-display {
  display: grid;
  justify-items: center;
  gap: 12px;
  margin: 8px 0 4px;
  padding: 14px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
}

.status-text,
.progress-text {
  margin-bottom: 0;
  color: var(--muted);
}

.status-text {
  min-height: 1.5em;
  font-weight: 700;
}

.do-now {
  display: grid;
  justify-items: center;
  width: 100%;
  gap: 6px;
  padding: 30px 16px;
  border-radius: var(--radius);
  background: var(--primary);
  color: var(--primary-on);
  text-align: center;
}

.do-now.rest-mode {
  background: var(--accent);
  color: #332800;
}

.do-now-label {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

#exerciseText {
  font-size: clamp(3.25rem, 17vw, 5rem);
  font-weight: 900;
  line-height: 1;
}

#repText {
  margin-bottom: 0;
  font-size: clamp(1.9rem, 9vw, 3rem);
  font-weight: 900;
  line-height: 1.1;
}

.rest-progress {
  width: 100%;
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: color-mix(in srgb, #332800, transparent 78%);
}

#restProgressBar {
  width: 100%;
  height: 100%;
  border-radius: inherit;
  background: #332800;
  transition: width 0.25s linear;
}

.workout-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 100%;
}

.workout-details div {
  display: grid;
  justify-items: center;
  gap: 4px;
  padding: 10px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface-high);
}

.workout-details span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.workout-details strong {
  color: var(--text);
  font-size: 1.45rem;
  line-height: 1;
}

.next-preview {
  display: grid;
  gap: 2px;
  width: 100%;
  padding: 9px 12px;
  border-radius: var(--radius);
  background: var(--surface-high);
  color: var(--text);
  font-weight: 800;
  text-align: center;
}

.next-preview span:first-child {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

.current-rung-scheme {
  width: 100%;
}

.current-rung-scheme h2 {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
}

#currentRungSchemeList {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.current-rung-set {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 46px;
  padding: 9px 12px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface-high);
  color: var(--text);
  font-weight: 800;
}

.current-rung-set.completed {
  background: #25322f;
  color: var(--muted);
  border-color: #34443f;
}

.current-rung-set.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #332800;
  transform: scale(1.01);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent), transparent 72%);
}

.current-rung-set.upcoming {
  color: var(--muted);
  opacity: 0.68;
}

.active-set-label {
  flex: 0 0 auto;
  font-size: 0.78rem;
  font-weight: 900;
  text-transform: uppercase;
}

.timer-text {
  margin-bottom: 0;
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.controls {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

button {
  min-height: 48px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface-high);
  color: var(--text);
  cursor: pointer;
  font-weight: 800;
}

button:hover {
  border-color: var(--primary);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  border-color: #2e3936;
  background: #161c1b;
  color: #71807b;
  cursor: not-allowed;
  opacity: 1;
  pointer-events: none;
  filter: grayscale(0.35);
}

button.primary {
  border-color: var(--primary);
  background: var(--primary);
  color: var(--primary-on);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary), transparent 82%);
}

.main-action,
#skipRestBtn {
  width: 100%;
}

.workout-mode .controls button.primary {
  min-height: 64px;
  font-size: 1.12rem;
}

.secondary-action {
  border-color: color-mix(in srgb, var(--outline), transparent 35%);
  background: transparent;
  color: var(--muted);
}

.secondary-action:hover {
  color: var(--text);
}

.tertiary-action {
  min-height: 36px;
  border-color: transparent;
  background: transparent;
  color: var(--muted);
  font-size: 0.85rem;
}

.tertiary-action:hover {
  border-color: var(--outline);
}

.exercise-selection {
  margin-bottom: 20px;
}

#selectedExerciseList {
  display: grid;
  gap: 8px;
  margin: 0 0 16px;
  padding-left: 0;
  list-style: none;
}

.selected-order-item {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 8px 10px;
  align-items: center;
  padding: 10px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
}

.selected-order-number {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: var(--surface-high);
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 900;
}

.selected-order-name {
  color: var(--text);
  font-weight: 800;
}

.selected-order-controls {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.selected-order-controls button {
  min-height: 42px;
  padding: 8px;
  font-size: 0.85rem;
}

.selected-order-controls .remove-exercise-button {
  border-color: transparent;
  background: transparent;
  color: var(--muted);
}

.plan-section,
.path-section {
  padding-top: 2px;
}

.plan-section summary,
.path-section summary {
  min-height: 38px;
  cursor: pointer;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
  list-style: none;
}

.plan-section summary::-webkit-details-marker,
.path-section summary::-webkit-details-marker {
  display: none;
}

.plan-section summary::after,
.path-section summary::after {
  content: " ▾";
}

.plan-section[open] summary::after,
.path-section[open] summary::after {
  content: " ▴";
}

.plan-summary {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin: 8px 0 0;
  padding: 12px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
}

.plan-summary div {
  display: grid;
  gap: 2px;
}

.plan-summary dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.plan-summary dd {
  margin: 0;
  color: var(--text);
  font-weight: 800;
}

.path-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(44px, 1fr));
  gap: 8px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.path-list li {
  display: grid;
  place-items: center;
  min-height: 44px;
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
  font-weight: 800;
}

.path-list li.done {
  background: #25322f;
  color: var(--text);
}

.path-list li.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #332800;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent), transparent 72%);
}

@media (min-width: 640px) {
  .app-shell {
    padding-top: 34px;
  }

  .settings {
    grid-template-columns: 1fr 160px;
  }

  .workout-mode .controls {
    grid-template-columns: 1fr 1fr;
  }

  .workout-mode .controls .main-action,
  .workout-mode .controls #skipRestBtn {
    grid-column: 1 / -1;
  }

  .workout-mode .controls .tertiary-action {
    grid-column: 1 / -1;
    justify-self: center;
    width: min(100%, 220px);
  }

  .selected-order-item {
    grid-template-columns: 32px 1fr auto;
    align-items: center;
  }

  .selected-order-controls {
    grid-column: auto;
    grid-template-columns: repeat(3, 84px);
  }

}