.memory-calculator {
  max-width: 1080px;
  margin: 0 auto;
  --memory-weight-color: var(--color-link);
  --memory-cache-color: #9862c5;
}

.memory-calculator [hidden] { display: none !important; }
.memory-calculator__intro { margin-bottom: 1.5rem; }
.memory-calculator__muted,
.memory-calculator__hint { color: var(--color-text-muted); }
.memory-calculator__hint { font-size: 0.85rem; line-height: 1.5; margin: 0.5rem 0 0; }
.memory-calculator__links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; font-size: 0.9rem; }

.memory-calculator__workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
}

.memory-calculator__controls,
.memory-calculator__results {
  min-width: 0;
  padding: 1.4rem;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-surface);
}

.memory-calculator fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.memory-calculator legend { font-weight: 700; font-size: 1.05rem; margin-bottom: 1.2rem; color: var(--color-heading); }
.memory-calculator label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 0.4rem; }
.memory-calculator select,
.memory-calculator input {
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  min-height: 44px;
  border: 1px solid var(--color-border-strong);
  border-radius: 8px;
  padding: 0.6rem;
  background: var(--color-bg);
  color: var(--color-text);
  font: inherit;
  font-size: 1rem;
}

.memory-calculator__pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0.85rem; margin-top: 1.25rem; }
.memory-calculator__presets { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 0.6rem; }
.memory-calculator__presets button {
  min-width: 50px;
  min-height: 44px;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--color-border-strong);
  border-radius: 8px;
  background: var(--color-elevated);
  color: var(--color-text);
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}
.memory-calculator__presets button[aria-pressed="true"] { border-color: var(--color-link); color: var(--color-link); }
.memory-calculator :is(button, input, select, a):focus-visible { outline: 2px solid var(--color-link); outline-offset: 3px; }
.memory-calculator input[aria-invalid="true"] { border-color: var(--color-accent); }

.memory-calculator__results { background: var(--color-elevated); }
.memory-calculator__results h2 { font-size: 1rem; margin: 0 0 0.5rem; }
.memory-calculator__total { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 700; line-height: 1.25; margin: 0; letter-spacing: -0.03em; color: var(--color-heading); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.memory-calculator__breakdown { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.memory-calculator__metric { border-top: 3px solid var(--memory-weight-color); padding-top: 0.75rem; min-width: 0; }
.memory-calculator__metric + .memory-calculator__metric { border-color: var(--memory-cache-color); }
.memory-calculator__metric h3 { font-size: 0.85rem; margin: 0 0 0.4rem; }
.memory-calculator__metric p { font-size: 1.4rem; font-weight: 700; line-height: 1.35; margin: 0 0 0.3rem; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.memory-calculator__metric small { display: block; font-size: 0.8rem; line-height: 1.5; color: var(--color-text-muted); }
.memory-calculator__bar { display: flex; height: 14px; border-radius: 5px; overflow: hidden; margin-top: 1.4rem; }
.memory-calculator__bar span:first-child { background: var(--memory-weight-color); }
.memory-calculator__bar span:last-child { background: var(--memory-cache-color); }
.memory-calculator__notice { border-left: 3px solid var(--color-link); padding: 0.25rem 0 0.25rem 0.8rem; font-size: 0.9rem; margin: 1rem 0; }
.memory-calculator__model-notes { padding-left: 1.1rem; margin: 1rem 0; font-size: 0.85rem; }
.memory-calculator__model-notes li { margin-bottom: 0.6rem; }
.memory-calculator__method { margin-top: 2.5rem; padding-top: 0.75rem; border-top: 1px solid var(--color-border); }
.memory-calculator__method li { margin-bottom: 0.75rem; }
.memory-calculator__formula { padding: 1rem; margin: 1rem 0; border-radius: 10px; background: var(--color-elevated); }
.memory-calculator__formula p { margin: 0; overflow-wrap: anywhere; }
.memory-calculator__formula p + p { margin-top: 0.6rem; }
.memory-calculator__sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

@media (max-width: 760px) {
  .memory-calculator__workspace { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 420px) {
  .memory-calculator__controls, .memory-calculator__results { padding: 1rem; }
  .memory-calculator__pair { grid-template-columns: minmax(0, 1fr); }
  .memory-calculator__metric p { font-size: 1.15rem; }
}