.post-trainer {
  --post-water: #e7f6f8;
  --post-ink: #17313a;
  --post-muted: #5b7077;
  --post-line: rgba(23, 49, 58, 0.16);
  --post-panel: #ffffff;
  --post-danger: #ef6b5a;
  --post-tight: #f0a340;
  --post-close: #f2cf59;
  --post-beam: #48b78f;
  --post-broad: #479cd5;
  --post-run: #7f78d2;
  color: var(--post-ink);
  container-type: inline-size;
  font-family: inherit;
  margin: 2rem auto;
  max-width: 1080px;
}

.post-trainer * {
  box-sizing: border-box;
}

.post-trainer__masthead,
.post-trainer__workspace,
.post-trainer__panel,
.post-trainer__facts,
.post-trainer__notes {
  border: 1px solid var(--post-line);
  border-radius: 8px;
  background: var(--post-panel);
}

.post-trainer__masthead {
  align-items: center;
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding: 1rem;
}

.post-trainer__eyebrow {
  color: var(--post-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0;
  margin: 0 0 0.2rem;
  text-transform: uppercase;
}

.post-trainer h2,
.post-trainer h3,
.post-trainer p {
  margin-top: 0;
}

.post-trainer h2 {
  font-size: clamp(1.45rem, 1rem + 1.1cqi, 2.1rem);
  line-height: 1.15;
  margin-bottom: 0;
}

.post-trainer__readout {
  align-items: flex-end;
  display: grid;
  gap: 0.1rem;
  min-width: 9rem;
  text-align: right;
}

.post-trainer__readout span {
  color: var(--post-muted);
  font-size: 0.95rem;
  font-weight: 700;
}

.post-trainer__readout strong {
  font-size: 1.15rem;
}

.post-trainer__readout small {
  color: var(--post-muted);
}

.post-trainer.is-port-tack [data-post-tack],
.post-trainer.is-port-tack [data-post-boat-tack] {
  color: #c83f3a;
}

.post-trainer.is-starboard-tack [data-post-tack],
.post-trainer.is-starboard-tack [data-post-boat-tack] {
  color: #16845f;
}

.post-trainer__workspace {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) 320px;
  padding: 1rem;
}

.post-trainer__stage {
  align-items: center;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 2.75rem minmax(280px, 1fr) 2.75rem;
  min-width: 0;
}

.post-trainer__diagram {
  aspect-ratio: 1;
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.8) 0 10%, transparent 10.5%),
    conic-gradient(
      from 0deg,
      rgba(239, 107, 90, 0.35) 0 45deg,
      rgba(240, 163, 64, 0.28) 45deg 60deg,
      rgba(242, 207, 89, 0.3) 60deg 80deg,
      rgba(72, 183, 143, 0.32) 80deg 100deg,
      rgba(71, 156, 213, 0.3) 100deg 150deg,
      rgba(127, 120, 210, 0.28) 150deg 180deg,
      rgba(127, 120, 210, 0.28) 180deg 210deg,
      rgba(71, 156, 213, 0.3) 210deg 260deg,
      rgba(72, 183, 143, 0.32) 260deg 280deg,
      rgba(242, 207, 89, 0.3) 280deg 300deg,
      rgba(240, 163, 64, 0.28) 300deg 315deg,
      rgba(239, 107, 90, 0.35) 315deg 360deg
    ),
    radial-gradient(circle, #f8fdff 0 32%, var(--post-water) 32.5% 100%);
  border: 0;
  border-radius: 50%;
  box-shadow:
    inset 0 0 0 1rem rgba(255, 255, 255, 0.3),
    inset 0 0 0 4px rgba(23, 49, 58, 0.16);
  min-height: 280px;
  position: relative;
}

.post-trainer__diagram::before,
.post-trainer__diagram::after {
  background: rgba(23, 49, 58, 0.13);
  content: "";
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
}

.post-trainer__diagram::before {
  height: 1px;
  width: 86%;
}

.post-trainer__diagram::after {
  height: 86%;
  width: 1px;
}

.post-trainer__wind {
  align-items: center;
  color: var(--post-ink);
  display: flex;
  flex-direction: column;
  font-size: 0.95rem;
  font-weight: 800;
  gap: 0.32rem;
  left: 50%;
  position: absolute;
  text-transform: uppercase;
  top: 4.5%;
  transform: translateX(-50%);
  z-index: 2;
}

.post-trainer__wind-arrow {
  display: block;
  height: clamp(3.4rem, 2.8rem + 1.6cqi, 4.5rem);
  width: clamp(2.3rem, 1.8rem + 1.2cqi, 3.1rem);
}

.post-trainer__wind-arrow path {
  fill: transparent;
  stroke: var(--post-ink);
  stroke-linejoin: round;
  stroke-width: 2.2;
  vector-effect: non-scaling-stroke;
}

.post-trainer__no-go-label {
  color: rgba(23, 49, 58, 0.75);
  font-size: clamp(0.85rem, 0.7rem + 0.45cqi, 1.15rem);
  font-weight: 900;
  left: 50%;
  letter-spacing: 0;
  pointer-events: none;
  position: absolute;
  text-transform: uppercase;
  top: 25%;
  transform: translateX(-50%);
  z-index: 2;
}

.post-trainer__tack-ring {
  inset: 0;
  overflow: visible;
  pointer-events: none;
  position: absolute;
  z-index: 2;
}

.post-trainer__tack-arc {
  fill: none;
  stroke-linecap: round;
  stroke-width: 3.2;
  vector-effect: non-scaling-stroke;
}

.post-trainer__tack-arc--starboard {
  stroke: #28ba6a;
}

.post-trainer__tack-arc--port {
  stroke: #ef3e46;
}

.post-trainer__tack-label {
  font-size: clamp(1.05rem, 0.82rem + 0.72cqi, 1.65rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
  mix-blend-mode: multiply;
  pointer-events: none;
  position: absolute;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.24);
  text-transform: uppercase;
  z-index: 3;
}

.post-trainer .post-trainer__tack-label,
.post-trainer .post-trainer__tack-label *,
.post-trainer .post-trainer__tack-word,
.post-trainer .post-trainer__tack-word * {
  color: inherit !important;
  display: inline !important;
  pointer-events: none !important;
  text-decoration: none !important;
  -webkit-text-fill-color: currentColor !important;
}

.post-trainer__tack-label .post-trainer__tack-word + .post-trainer__tack-word {
  margin-left: 0.28em;
}

.post-trainer__tack-label--starboard {
  color: rgba(40, 186, 106, 0.34) !important;
  right: 8.5%;
  top: 61%;
}

.post-trainer .post-trainer__tack-label--starboard,
.post-trainer .post-trainer__tack-label--starboard * {
  color: rgba(40, 186, 106, 0.34) !important;
  -webkit-text-fill-color: rgba(40, 186, 106, 0.34) !important;
}

.post-trainer__tack-label--port {
  color: rgba(239, 62, 70, 0.34) !important;
  left: 9%;
  top: 61%;
}

.post-trainer .post-trainer__tack-label--port,
.post-trainer .post-trainer__tack-label--port * {
  color: rgba(239, 62, 70, 0.34) !important;
  -webkit-text-fill-color: rgba(239, 62, 70, 0.34) !important;
}

.post-trainer__compass {
  color: rgba(23, 49, 58, 0.78);
  font-size: clamp(1rem, 0.86rem + 0.42cqi, 1.35rem);
  font-weight: 900;
  inset: 1.6rem;
  pointer-events: none;
  position: absolute;
  text-transform: uppercase;
  z-index: 4;
}

.post-trainer__bearing {
  background: rgba(255, 255, 255, 0.48);
  border-radius: 999px;
  line-height: 1;
  padding: 0.12rem 0.32rem;
  position: absolute;
}

.post-trainer__bearing--north {
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}

.post-trainer__bearing--east {
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.post-trainer__bearing--south {
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
}

.post-trainer__bearing--west {
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}

.post-trainer__boat {
  --post-boat-angle: 90deg;
  appearance: none;
  -webkit-appearance: none;
  align-items: center;
  background: transparent;
  border: 0;
  box-shadow: none;
  cursor: grab;
  display: flex;
  height: 34%;
  justify-content: center;
  left: 50%;
  padding: 0;
  position: absolute;
  text-decoration: none;
  top: 50%;
  transform: translate(-50%, -50%) rotate(var(--post-boat-angle));
  transform-origin: center;
  transition: none !important;
  width: 14%;
  z-index: 4;
}

.post-trainer__boat:hover,
.post-trainer__boat:focus,
.post-trainer__boat:active {
  background: transparent !important;
  border-color: transparent !important;
  box-shadow: none !important;
  color: inherit !important;
  outline-offset: 4px;
  text-decoration: none !important;
}

.post-trainer__boat-labels {
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(23, 49, 58, 0.18);
  border-radius: 8px;
  box-shadow: 0 0.45rem 1.2rem rgba(23, 49, 58, 0.15);
  display: grid;
  gap: 0.1rem;
  left: calc(50% + 4.8rem);
  min-width: 8.5rem;
  padding: 0.55rem 0.7rem;
  pointer-events: none;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
}

.post-trainer__boat-labels::before {
  border-bottom: 0.45rem solid transparent;
  border-right: 0.55rem solid rgba(255, 255, 255, 0.92);
  border-top: 0.45rem solid transparent;
  content: "";
  height: 0;
  left: -0.55rem;
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
}

.post-trainer__boat-labels span {
  color: var(--post-muted);
  font-size: 0.74rem;
  font-weight: 800;
  line-height: 1.1;
  text-transform: uppercase;
}

.post-trainer__boat-labels strong {
  color: var(--post-ink);
  font-size: 0.96rem;
  line-height: 1.15;
}

.post-trainer__boat:active {
  cursor: grabbing;
}

.post-trainer__boat:focus-visible,
.post-trainer__rotate:focus-visible,
.post-trainer input:focus-visible {
  outline: 3px solid rgba(71, 156, 213, 0.45);
  outline-offset: 4px;
}

.post-trainer__hull {
  height: 100%;
  position: absolute;
  width: 72%;
}

.post-trainer__hull-fill {
  fill: #e8f2f5;
}

.post-trainer__hull-line {
  fill: none;
  stroke: rgba(23, 49, 58, 0.78);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 4;
  vector-effect: non-scaling-stroke;
}

.post-trainer__sail-line {
  inset: 0;
  pointer-events: none;
  position: absolute;
  z-index: 7;
}

.post-trainer__sail-line svg {
  display: block;
  height: 100%;
  overflow: visible;
  width: 100%;
}

.post-trainer__sail-line path {
  fill: none;
  stroke: #17313a;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 3.1;
  vector-effect: non-scaling-stroke;
}

.post-trainer__sail-curve {
  transition: none;
}

.post-trainer__maneuver-badge {
  --post-maneuver-x: 50%;
  --post-maneuver-y: 15%;
  background: #17313a;
  border-radius: 999px;
  box-shadow: 0 0.45rem 1.2rem rgba(23, 49, 58, 0.2);
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 800;
  left: var(--post-maneuver-x);
  line-height: 1.1;
  opacity: 0;
  padding: 0.45rem 0.7rem;
  pointer-events: none;
  position: absolute;
  text-align: center;
  top: var(--post-maneuver-y);
  transform: translate(-50%, -50%) scale(0.92);
  transition: opacity 180ms ease, transform 180ms ease;
  white-space: nowrap;
  z-index: 8;
}

.post-trainer.is-showing-maneuver .post-trainer__maneuver-badge {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.post-trainer__rotate {
  align-items: center;
  background: #17313a;
  border: 0;
  border-radius: 999px;
  color: #ffffff;
  cursor: pointer;
  display: inline-flex;
  font-size: 1.35rem;
  font-weight: 800;
  height: 2.75rem;
  justify-content: center;
  line-height: 1;
  width: 2.75rem;
}

.post-trainer__panel {
  align-content: start;
  display: grid;
  gap: 1rem;
  padding: 1rem;
}

.post-trainer__control {
  display: grid;
  gap: 0.55rem;
}

.post-trainer__control span {
  color: var(--post-muted);
  font-size: 0.86rem;
  font-weight: 800;
}

.post-trainer input[type="range"] {
  accent-color: #17313a;
  width: 100%;
}

.post-trainer__facts {
  display: grid;
  gap: 0;
  overflow: hidden;
}

.post-trainer__facts div {
  display: grid;
  gap: 0.15rem;
  padding: 0.85rem;
}

.post-trainer__facts div + div {
  border-top: 1px solid var(--post-line);
}

.post-trainer__facts span {
  color: var(--post-muted);
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
}

.post-trainer__facts strong {
  font-size: 1rem;
}

.post-trainer__reference {
  display: grid;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-trainer__reference li {
  align-items: center;
  display: flex;
  font-size: 0.9rem;
  gap: 0.5rem;
  line-height: 1.25;
}

.post-trainer__swatch {
  border-radius: 999px;
  display: inline-block;
  flex: 0 0 auto;
  height: 0.75rem;
  width: 0.75rem;
}

.post-trainer__swatch--danger {
  background: var(--post-danger);
}

.post-trainer__swatch--tight {
  background: var(--post-tight);
}

.post-trainer__swatch--close {
  background: var(--post-close);
}

.post-trainer__swatch--beam {
  background: var(--post-beam);
}

.post-trainer__swatch--broad {
  background: var(--post-broad);
}

.post-trainer__swatch--run {
  background: var(--post-run);
}

.post-trainer__notes {
  margin-top: 1rem;
  padding: 1rem;
}

.post-trainer__notes h3 {
  font-size: 1.2rem;
  margin-bottom: 0.35rem;
}

.post-trainer__notes p {
  color: var(--post-muted);
  margin-bottom: 0;
}

.post-trainer.is-nogo .post-trainer__readout strong {
  color: #bd3d30;
}

.post-trainer.is-close-hauled .post-trainer__readout strong {
  color: #b76a12;
}

.post-trainer.is-close-reach .post-trainer__readout strong {
  color: #8a7010;
}

.post-trainer.is-beam-reach .post-trainer__readout strong {
  color: #1f7f61;
}

.post-trainer.is-broad-reach .post-trainer__readout strong {
  color: #236f9d;
}

.post-trainer.is-running .post-trainer__readout strong {
  color: #5851a8;
}

@container (max-width: 780px) {
  .post-trainer__workspace {
    grid-template-columns: 1fr;
  }
}

@container (max-width: 560px) {
  .post-trainer__masthead {
    align-items: stretch;
    display: grid;
  }

  .post-trainer__readout {
    align-items: start;
    text-align: left;
  }

  .post-trainer__workspace {
    padding: 0.75rem;
  }

  .post-trainer__stage {
    grid-template-columns: 1fr 1fr;
  }

  .post-trainer__diagram {
    grid-column: 1 / -1;
    grid-row: 1;
    min-height: 250px;
  }

  .post-trainer__rotate {
    justify-self: center;
  }

  .post-trainer__rotate--left {
    grid-column: 1;
    grid-row: 2;
  }

  .post-trainer__rotate--right {
    grid-column: 2;
    grid-row: 2;
  }

  .post-trainer__sail {
    border-bottom-width: 4.6rem;
  }

  .post-trainer__boat-labels {
    left: 50%;
    min-width: 8rem;
    top: calc(50% + 5.6rem);
    transform: translateX(-50%);
  }

  .post-trainer__boat-labels::before {
    border-bottom: 0.55rem solid rgba(255, 255, 255, 0.92);
    border-left: 0.45rem solid transparent;
    border-right: 0.45rem solid transparent;
    border-top: 0;
    left: 50%;
    top: -0.55rem;
    transform: translateX(-50%);
  }
}