:root { --ink: #212529; --muted: #6c757d; --line: #dee2e6; --bg: #fff; --accent: #e8590c; --chip: #f1f3f5;
  --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100; --series-5: #e87ba4; --series-6: #008300;
  --series-7: #4a3aa7; --series-8: #e34948;
  --series-1: #2a78d6; --grid: #eceef0; --body: #d5d9de; --muscle: #b9c0c8; --muscle-2: #8fb8ea; }
@media (prefers-color-scheme: dark) {
  :root { --ink: #e9ecef; --muted: #adb5bd; --line: #495057; --bg: #1c1f23; --chip: #343a40;
    --series-2: #d95926; --series-3: #199e70; --series-4: #c98500; --series-5: #d55181; --series-6: #008300;
    --series-7: #9085e9; --series-8: #e66767;
    --series-1: #3987e5; --grid: #2c3035; --body: #3a4046; --muscle: #555d66; --muscle-2: #28558c; }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; font: 16px/1.5 system-ui, sans-serif; color: var(--ink); background: var(--bg); }
#app { max-width: 60rem; margin: 0 auto; padding: 1rem; }
header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
button, select, input { font: inherit; padding: 0.4rem 0.7rem; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg); color: var(--ink); }
button { cursor: pointer; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.filters { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 1rem; }
.exercise-list { list-style: none; padding: 0; display: grid; gap: 0.5rem;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr)); }
.exercise { width: 100%; text-align: left; display: flex; flex-direction: column; gap: 0.3rem; }
.exercise .name { font-weight: 600; }
.empty { color: var(--muted); }
.chips { display: inline-flex; flex-wrap: wrap; gap: 0.3rem; }
.chip { background: var(--chip); border-radius: 999px; padding: 0 0.6rem; font-size: 0.85em; }
.modal-overlay { position: fixed; inset: 0; background: rgb(0 0 0 / 0.5); display: grid; place-items: center;
  padding: 1rem; }
.modal { background: var(--bg); border-radius: 10px; padding: 1.2rem; max-width: 36rem; width: 100%;
  max-height: 90vh; overflow: auto; }
.how-to-images { display: flex; gap: 1rem; justify-content: center; align-items: center; }
.how-to-images .body-map { width: 20rem; }
.how-to-images img { width: 7rem; height: auto; background: #fff; border-radius: 8px; padding: 0.3rem; }
.body-map { width: 100%; max-width: 32rem; height: auto; display: block; }
.body-neutral { fill: var(--body); }
.body-muscle path { fill: var(--muscle); stroke: var(--bg); stroke-width: 1.5; }
.body-muscle.primary path { fill: var(--series-1); }
.body-muscle.secondary path { fill: var(--muscle-2); }
.body-muscle[role=button] { cursor: pointer; }
.body-muscle[role=button]:hover path { fill: var(--muscle-2); }
.body-muscle[role=button].primary:hover path { fill: var(--series-1); }
.body-muscle:focus-visible { outline: none; }
.body-muscle:focus-visible path { stroke: var(--accent); stroke-width: 3; }
.body-view { fill: var(--muted); font-size: 12px; }
.muscle-map { margin: 0 auto 1rem; max-width: 32rem; }
.muscle-buttons { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem; }
.muscle-buttons [aria-pressed=true] { background: var(--series-1); color: #fff; border-color: var(--series-1); }
.login { display: grid; gap: 0.6rem; max-width: 20rem; margin: 3rem auto; }
.login-message { color: var(--accent); min-height: 1.5em; margin: 0; }
.toast { position: fixed; bottom: 1rem; right: 1rem; background: var(--ink); color: var(--bg); }
.toolbar { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; margin-bottom: 1rem; }
.inline-form { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.inline-form input[type=number] { width: 10rem; }
nav { display: flex; gap: 0.5rem; }
.muted { color: var(--muted); }
.workout-list { list-style: none; padding: 0; display: grid; gap: 0.4rem; }
.workout { width: 100%; display: flex; justify-content: space-between; }
.summary { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin: 1rem 0; }
.chip.big { font-size: 1em; padding: 0.2rem 0.8rem; }
.delta { color: var(--muted); }
table.sets { border-collapse: collapse; width: 100%; margin-bottom: 1rem; }
table.sets th, table.sets td { border-bottom: 1px solid var(--line); padding: 0.3rem; text-align: left; }
table.sets input[type=number] { width: 6rem; }
.danger { border-color: var(--accent); color: var(--accent); }
.charts { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(22rem, 1fr)); }
.chart { margin: 0; border: 1px solid var(--line); border-radius: 8px; padding: 0.8rem; }
.chart figcaption { font-weight: 600; margin-bottom: 0.3rem; }
.chart-frame { position: relative; }
.chart-plot { width: 100%; height: auto; display: block; }
.chart-plot text { fill: var(--muted); font-size: 11px; }
.chart-grid { stroke: var(--grid); stroke-width: 1; }
.chart-line { fill: none; stroke: var(--series-1); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart-dot { fill: var(--series-1); stroke: var(--bg); stroke-width: 2; }
.chart-reference line { stroke: var(--muted); stroke-dasharray: 4 4; }
.chart-cross { stroke: var(--muted); stroke-width: 1; visibility: hidden; }
.chart-cross.on { visibility: visible; }
.chart-readout { min-height: 1.5em; font-size: 0.9em; color: var(--muted); }
.chart-readout strong { color: var(--ink); }
.chart-table { font-size: 0.85em; }
.chart-table table { border-collapse: collapse; }
.chart-table td, .chart-table th { padding: 0.1rem 0.6rem; text-align: left; }
.period-selector { display: inline-flex; gap: 0.25rem; }
.period-selector [aria-pressed=true] { background: var(--ink); color: var(--bg); }
.plan { margin-top: 1.5rem; border-top: 1px solid var(--line); padding-top: 1rem; display: grid; gap: 0.5rem;
  max-width: 40rem; }
.plan textarea { font: inherit; padding: 0.4rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg);
  color: var(--ink); }
.plan button { justify-self: start; }
.plan-option { font-size: 1.2em; font-weight: 600; }
.plan-referral { font-weight: 600; color: var(--accent); }
.standing { font-weight: 600; margin: 0.5rem 0; }
.attribution { font-size: 0.85em; margin-top: 1.5rem; }
.primary { background: var(--series-1); border-color: var(--series-1); color: #fff; }
.link { border: none; background: none; padding: 0; color: var(--series-1); text-decoration: underline; }
tr.warmup td { color: var(--muted); }
.set-note { font-size: 0.85em; color: var(--muted); }
.set-form { display: grid; gap: 0.7rem; margin-bottom: 0.8rem; }
.form-row { display: grid; grid-template-columns: 6rem 1fr; gap: 0.6rem; align-items: center; }
.form-label { font-weight: 600; }
.with-unit { display: flex; gap: 0.4rem; align-items: center; }
.with-unit input { flex: 1; }
.previous { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.previous-set.warmup { color: var(--muted); }
.set-extras { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; align-items: center; }
.set-extras textarea { font: inherit; width: 100%; border: 1px solid var(--line); border-radius: 6px; background: var(--bg);
  color: var(--ink); }
.optional-field { display: inline-flex; gap: 0.4rem; align-items: center; }
.set-form .primary { justify-self: start; }
.last-session { margin-top: 1rem; }
.calendar { max-width: 28rem; border: 1px solid var(--line); border-radius: 10px; padding: 0.8rem; margin-bottom: 1.5rem; }
.calendar-head { display: flex; justify-content: space-between; align-items: center; }
.calendar-head h2 { margin: 0; font-size: 1.1rem; font-weight: 500; }
.calendar-head button { border: none; font-size: 1.4rem; line-height: 1; }
.calendar-grid { width: 100%; border-collapse: collapse; text-align: center; margin-top: 0.5rem; }
.calendar-grid th { color: var(--muted); font-weight: 600; padding: 0.3rem 0; }
.calendar-grid td { height: 2.4rem; color: var(--muted); }
.calendar-grid td.other-month { opacity: 0.4; }
.calendar-grid td.today { outline: 2px solid var(--series-1); outline-offset: -4px; border-radius: 6px; }
.calendar-grid .trained { width: 2.2rem; height: 2.2rem; padding: 0; border-radius: 50%; background: var(--series-1);
  border-color: var(--series-1); color: #fff; font-weight: 600; }
.workout-card { border-top: 1px solid var(--line); padding: 1rem 0; }
.workout-card h2 { margin: 0 0 0.3rem; font-size: 1.3rem; }
.workout-card h2 .link { font-size: inherit; font-weight: 700; text-decoration: none; }
.card-exercise h3 { margin: 0.8rem 0 0.2rem; }
.card-exercise h3 .link { font-size: 1.05rem; text-decoration: none; }
.card-exercise table.sets { table-layout: fixed; }
a { color: var(--series-1); }
.chart-line.series-1 { stroke: var(--series-1); }
.chart-dot.series-1, .chart-swatch.series-1 { fill: var(--series-1); background: var(--series-1); }
.chart-line.series-2 { stroke: var(--series-2); }
.chart-dot.series-2, .chart-swatch.series-2 { fill: var(--series-2); background: var(--series-2); }
.chart-line.series-3 { stroke: var(--series-3); }
.chart-dot.series-3, .chart-swatch.series-3 { fill: var(--series-3); background: var(--series-3); }
.chart-line.series-4 { stroke: var(--series-4); }
.chart-dot.series-4, .chart-swatch.series-4 { fill: var(--series-4); background: var(--series-4); }
.chart-line.series-5 { stroke: var(--series-5); }
.chart-dot.series-5, .chart-swatch.series-5 { fill: var(--series-5); background: var(--series-5); }
.chart-line.series-6 { stroke: var(--series-6); }
.chart-dot.series-6, .chart-swatch.series-6 { fill: var(--series-6); background: var(--series-6); }
.chart-line.series-7 { stroke: var(--series-7); }
.chart-dot.series-7, .chart-swatch.series-7 { fill: var(--series-7); background: var(--series-7); }
.chart-line.series-8 { stroke: var(--series-8); }
.chart-dot.series-8, .chart-swatch.series-8 { fill: var(--series-8); background: var(--series-8); }
.chart-legend { list-style: none; padding: 0; margin: 0.4rem 0; display: flex; flex-wrap: wrap; gap: 0.3rem 1rem;
  font-size: 0.9em; }
.chart-swatch { display: inline-block; width: 1.4rem; height: 0.6rem; border-radius: 3px; margin-right: 0.4rem; }
.compare-chips { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; margin-bottom: 0.8rem; }
.compare-chip { border: none; padding: 0.2rem 0.7rem; font-size: 0.95em; }
.compare-notes { font-size: 0.9em; padding-left: 1.2rem; }
.dashboard-section { margin-bottom: 2rem; }
.level-badge { display: inline-flex; border-radius: 6px; overflow: hidden; border: 1px solid var(--line); }
.level-badge > * { padding: 0.4rem 0.8rem; }
.level-badge strong { background: var(--ink); color: var(--bg); }
.suggestions { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1rem; }
.assistant-log { display: grid; gap: 0.8rem; margin-bottom: 1rem; }
.turn { border-radius: 10px; padding: 0.6rem 0.9rem; max-width: 46rem; }
.turn p { margin: 0.3rem 0; }
.turn-user { background: var(--chip); justify-self: end; }
.turn-model { border: 1px solid var(--line); }
.turn-error { color: var(--accent); border: 1px dashed var(--accent); }
.turn-label { font-size: 0.8em; color: var(--muted); }
.assistant-form { display: grid; gap: 0.5rem; max-width: 46rem; }
.assistant-form textarea { font: inherit; padding: 0.5rem; border: 1px solid var(--line); border-radius: 6px;
  background: var(--bg); color: var(--ink); }
.assistant-form button { justify-self: start; }
.proposed-workout { border-top: 1px solid var(--line); margin-top: 0.6rem; padding-top: 0.4rem; }
.workout-plan ul { list-style: none; padding: 0; display: grid; gap: 0.4rem; }
.workout-plan li { display: flex; gap: 1rem; align-items: center; }
.workout-plan li.done span { color: var(--muted); text-decoration: line-through; }
.saved-suggestions { margin-top: 2rem; border-top: 1px solid var(--line); padding-top: 1rem; max-width: 46rem; }
.saved-list { display: grid; gap: 0.5rem; margin-top: 0.6rem; }
.saved-item { border: 1px solid var(--line); border-radius: 8px; padding: 0.5rem 0.8rem; }
.saved-item summary { cursor: pointer; }
.saved-item.dismissed, .saved-item.used { opacity: 0.7; }
.admin-section { max-width: 46rem; }
.admin-exercises { list-style: none; padding: 0; display: grid; gap: 0.3rem; }
.admin-exercises label { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }
.evidence { margin-top: 0.6rem; font-size: 0.9em; }
.evidence summary { cursor: pointer; color: var(--muted); }
.evidence ul { padding-left: 1.2rem; }
.block-cards { display: grid; gap: 0.8rem; grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }
.block-card { border: 1px solid var(--line); border-radius: 8px; padding: 0.6rem 0.8rem; }
.block-card h3 { margin: 0 0 0.3rem; }
.block-card ol { padding-left: 1.2rem; }