:root {
  color-scheme: light;
  --bg: #eef1ef;
  --panel: #ffffff;
  --panel-soft: #f7f8f7;
  --text: #15191b;
  --muted: #657074;
  --line: #d9dfdc;
  --accent: #1c6b54;
  --accent-strong: #124a3a;
  --accent-soft: #dcece6;
  --danger: #9d2c2c;
  --radius: 8px;
  --shadow: 0 10px 28px rgba(20, 28, 24, 0.08);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: 14px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0 10px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent-strong);
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  line-height: 1.1;
}

h2 {
  font-size: 20px;
}

h3 {
  font-size: 17px;
}

.tabs {
  position: sticky;
  top: 0;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
  padding: 8px 0 12px;
  background: var(--bg);
}

.tab,
.primary,
.ghost,
.danger,
.file-button,
.icon-button,
.status-pill {
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--text);
  font-weight: 700;
}

.tab {
  padding: 0 8px;
  font-size: 14px;
}

.tab.active,
.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.icon-button {
  width: 44px;
  min-width: 44px;
  font-size: 20px;
}

.status-pill {
  display: inline-grid;
  place-items: center;
  padding: 0 12px;
  color: var(--accent-strong);
  background: var(--accent-soft);
  white-space: nowrap;
}

.view {
  display: none;
}

.view.active {
  display: block;
}

.section-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin: 8px 0 14px;
}

.section-head p,
.chart-title small,
.metric span,
.exercise-note,
.history small {
  color: var(--muted);
}

.field {
  display: grid;
  gap: 7px;
  margin-bottom: 12px;
}

.field span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input,
select {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0 12px;
  background: #fff;
  color: var(--text);
}

.workout-list,
.program-list,
.stats-list,
.history {
  display: grid;
  gap: 10px;
}

.exercise-card,
.day-card,
.stat-card,
.history-item,
.chart-panel,
.install-panel,
.metric {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.exercise-card,
.day-card,
.stat-card,
.history-item,
.install-panel {
  padding: 12px;
}

.exercise-head,
.day-head,
.set-row,
.history-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.exercise-main {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 12px;
  align-items: center;
  min-width: 0;
}

.exercise-art {
  display: grid;
  place-items: center;
  width: 88px;
  height: 88px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
}

.exercise-art img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.exercise-icon {
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  background: var(--accent-soft);
  font-size: 23px;
  line-height: 1;
}

.exercise-title {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.exercise-title strong {
  font-size: 16px;
}

.exercise-note {
  font-size: 13px;
}

.set-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.set-row {
  display: grid;
  grid-template-columns: 36px 1fr 1fr auto;
  gap: 8px;
  align-items: end;
}

.set-index {
  display: grid;
  place-items: center;
  height: 44px;
  border-radius: var(--radius);
  background: var(--panel-soft);
  color: var(--muted);
  font-weight: 800;
}

.mini-field {
  display: grid;
  gap: 4px;
}

.mini-field span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 750;
}

.mini-field input {
  padding: 0 8px;
}

.set-done {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
  color: var(--muted);
  font-weight: 900;
}

.set-done.saved {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.day-actions,
.exercise-actions,
.data-actions,
.dialog-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.install-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 12px 0;
}

.install-panel p {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.day-actions button,
.exercise-actions button,
.ghost,
.danger,
.file-button {
  padding: 0 12px;
}

.ghost {
  background: var(--panel-soft);
}

.danger {
  border-color: #edc4c4;
  color: var(--danger);
  background: #fff8f8;
}

.exercise-list {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.exercise-pill {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 10px;
  border-radius: var(--radius);
  background: var(--panel-soft);
}

.exercise-pill-title {
  display: grid;
  grid-template-columns: 66px 1fr;
  gap: 8px;
  align-items: center;
  min-width: 0;
}

.exercise-pill-title .exercise-art {
  width: 62px;
  height: 62px;
}

.exercise-pill-title .exercise-icon {
  font-size: 19px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 10px;
}

.metric {
  display: grid;
  gap: 4px;
  padding: 12px;
}

.metric strong {
  font-size: 20px;
}

.chart-panel {
  padding: 12px;
  margin-bottom: 10px;
}

.exercise-analytics {
  margin: 12px 0;
}

.chart-title {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  font-weight: 800;
}

canvas {
  width: 100%;
  max-width: 100%;
}

.progress-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
}

.file-button {
  position: relative;
  display: inline-grid;
  place-items: center;
  overflow: hidden;
}

.file-button input {
  position: absolute;
  inset: 0;
  opacity: 0;
}

dialog {
  width: min(460px, calc(100% - 24px));
  border: 0;
  border-radius: var(--radius);
  padding: 0;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.24);
}

dialog::backdrop {
  background: rgba(8, 12, 14, 0.45);
}

.dialog-form {
  padding: 16px;
}

.dialog-form h3 {
  margin-bottom: 14px;
}

.inline-fields {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  z-index: 10;
  transform: translateX(-50%) translateY(80px);
  max-width: calc(100% - 28px);
  padding: 12px 14px;
  border-radius: var(--radius);
  background: #101417;
  color: #fff;
  opacity: 0;
  transition: 160ms ease;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.empty {
  padding: 18px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  text-align: center;
}

@media (max-width: 620px) {
  .app-shell {
    padding: 12px;
  }

  h1 {
    font-size: 24px;
  }

  .tabs {
    grid-template-columns: repeat(2, 1fr);
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: stretch;
  }

  .section-head .primary {
    min-width: 108px;
  }

  .exercise-pill {
    grid-template-columns: 1fr;
  }

  .exercise-actions {
    justify-content: flex-start;
  }

  .install-panel {
    align-items: stretch;
    flex-direction: column;
  }
}