:root {
  color-scheme: dark;
  --panel: #191a16;
  --panel-2: #202118;
  --line: #33352c;
  --text: #f2f1e8;
  --muted: #a7a596;
  --green: #4ee07f;
  --amber: #eec15d;
  --ink: #080906;
  --radius: 8px;
  --font: "Avenir Next", "Trebuchet MS", sans-serif;
  --mono: "SFMono-Regular", "Consolas", monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  overflow-x: hidden;
  overscroll-behavior-x: none;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(150deg, #10110e 0%, #191713 52%, #0e1510 100%);
  background-size: 18px 18px, 18px 18px, 100% 100%;
  font: 12px/1.35 var(--font);
}

button,
input,
select {
  font: inherit;
  margin: 0;
  max-width: 100%;
}

button {
  border: 0;
  padding: 0;
}

.app {
  width: min(100%, 840px);
  max-width: 100%;
  min-height: 100dvh;
  margin: 0 auto;
  padding: 8px;
  display: grid;
  align-content: start;
  gap: 8px;
  overflow-x: hidden;
}

.topbar,
.sets,
.stats,
.notes {
  min-width: 0;
  border: 1px solid var(--line);
  background: rgba(25, 26, 22, 0.94);
  border-radius: var(--radius);
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 3;
  padding: 8px;
  display: grid;
  grid-template-columns: minmax(150px, 1fr) 90px 74px;
  gap: 6px;
  align-items: end;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.32);
}

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

.topbar > *,
.set-columns > *,
.stats > *,
.notes > * {
  min-width: 0;
}

.field span {
  color: var(--muted);
  font-size: 10px;
  text-transform: uppercase;
}

.field input,
.field select,
.timer {
  width: 100%;
  min-width: 0;
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d0e0b;
  color: var(--text);
  padding: 0 8px;
  outline: none;
}

.field input:focus,
.field select:focus,
.timer:focus {
  border-color: var(--green);
}

.timer {
  background: conic-gradient(var(--green) var(--timer, 0%), #0d0e0b 0);
  font: 800 16px/1 var(--mono);
  text-align: center;
}

.timer:disabled {
  opacity: 1;
  -webkit-text-fill-color: var(--text);
}

.exercise-field select {
  font-size: 18px;
  font-weight: 800;
}

.icon-btn,
.add-set,
.day-btn {
  min-width: 0;
  min-height: 36px;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.icon-btn:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.sets {
  padding: 8px;
}

.set-columns {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.set {
  --set-gap: 6px;
  --set-head: 20px;
  --set-cell-h: 42px;
  --set-action-h: 32px;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #12130f;
  padding: var(--set-gap);
  display: flex;
  flex-direction: column;
  gap: var(--set-gap);
}

.set.done {
  border-color: rgba(78, 224, 127, 0.72);
  background: linear-gradient(180deg, rgba(78, 224, 127, 0.13), #11130f 64%);
}

.set-head {
  display: grid;
  place-items: center;
  height: var(--set-head);
}

.set-num {
  font: 800 10px/1 var(--mono);
  color: var(--amber);
  text-transform: uppercase;
}

.set .remove {
  color: #7f3a36;
  -webkit-text-fill-color: #7f3a36;
  border-color: rgba(91, 34, 31, 0.5);
  background: rgba(34, 18, 17, 0.58);
  font-weight: 900;
}

.set-cell {
  position: relative;
  min-width: 0;
}

.set-cell span {
  position: absolute;
  right: 6px;
  bottom: 3px;
  pointer-events: none;
  color: #fff;
  font: 800 8px/1 var(--font);
  text-transform: uppercase;
}

.set-cell input {
  width: 100%;
  height: var(--set-cell-h);
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0a0b09;
  color: var(--text);
  padding: 0 7px 10px;
  font: 800 14px/1 var(--mono);
  outline: none;
  text-align: center;
}

.set-actions {
  display: grid;
  grid-template-rows: repeat(2, var(--set-action-h));
  gap: var(--set-gap);
  min-width: 0;
}

.set button {
  min-width: 0;
  height: var(--set-action-h);
  padding: 0;
  border-radius: 6px;
  cursor: pointer;
  color: var(--text);
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.set .done-btn {
  background: var(--green);
  color: var(--ink);
  font-weight: 900;
}

.set.done .done-btn {
  background: transparent;
  color: var(--green);
  border-color: rgba(78, 224, 127, 0.65);
}

.add-set {
  min-height: 194px;
  border-style: dashed;
  color: var(--green);
  font-weight: 900;
  background: rgba(78, 224, 127, 0.06);
}

.stats {
  padding: 8px;
  display: grid;
  grid-template-columns: 74px 74px 74px minmax(160px, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.metric {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.metric span {
  color: var(--muted);
  font-size: 9px;
  text-transform: uppercase;
}

.metric strong {
  font: 900 15px/1 var(--mono);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.spark {
  grid-column: 4;
  width: 100%;
  height: 168px;
  display: block;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d0e0b;
}

.spark-point {
  fill: var(--amber);
  opacity: 0.85;
  cursor: pointer;
  stroke: #0d0e0b;
  stroke-width: 2;
}

.spark-point.active {
  fill: #fff4b8;
  opacity: 1;
  stroke: var(--amber);
  stroke-width: 5;
  filter: drop-shadow(0 0 7px rgba(238, 193, 93, 0.85));
}

.day-btn {
  grid-column: 5;
  color: var(--amber);
}

.notice {
  min-height: 17px;
  color: var(--amber);
  font-size: 11px;
}

.notes {
  padding: 8px;
}

.notes label {
  display: grid;
  gap: 6px;
}

.notes span {
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
}

.notes textarea {
  width: 100%;
  min-height: 160px;
  resize: vertical;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d0e0b;
  color: var(--text);
  padding: 8px;
  outline: none;
  font: 12px/1.35 var(--font);
}

.notes textarea:focus {
  border-color: var(--green);
}

@media (max-width: 560px) {
  .app {
    padding: 6px;
    gap: 6px;
  }

  .topbar {
    grid-template-columns: 1fr 78px 62px;
    grid-template-areas:
      "exercise timer start";
    gap: 5px;
    padding: 6px;
  }

  .exercise-field {
    grid-area: exercise;
  }

  .timer {
    grid-area: timer;
  }

  .timer-btn {
    grid-area: start;
  }

  .field span {
    font-size: 8px;
  }

  .field input,
  .field select {
    height: 36px;
    padding: 0 5px;
  }

  input,
  select,
  textarea {
    font-size: 16px;
  }

  .sets {
    padding: 6px;
  }

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

  .set {
    --set-gap: 5px;
    --set-head: 18px;
    --set-cell-h: 38px;
    --set-action-h: 32px;
  }

  .set-cell input {
    padding-inline: 3px;
    font-size: 12px;
  }

  .add-set {
    min-height: 174px;
  }

  .stats {
    grid-template-columns: repeat(3, 1fr) auto;
    gap: 6px;
  }

  .day-btn {
    grid-column: 4;
  }

  .spark {
    grid-column: 1 / -1;
    height: 138px;
  }

  .notes textarea {
    min-height: 136px;
    resize: none;
  }
}