.measures-intro {
  max-width: 760px;
  margin: 16px auto 0;
  color: #476786;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.55;
}

.measures-settings-card {
  max-width: 720px;
  margin: 0 auto;
}

.measures-settings-footer {
  max-width: 900px;
  margin-right: auto;
  margin-left: auto;
}

.measures-exercise-card {
  max-width: 960px;
  min-height: 620px;
  margin: 0 auto;
}

.measures-task-text {
  width: min(820px, 100%);
  margin: 2px auto 18px;

  color: #274e73;

  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: clamp(24px, 4vw, 38px);
  font-weight: 700;
  line-height: 1.35;

  text-align: center;
}

.measures-visual {
  width: min(820px, 100%);
  margin: 0 auto;
}

.measures-answer-area,
.measures-hint {
  margin-right: auto;
  margin-left: auto;
}


/* =========================
   Поле числового ответа
   ========================= */

.measures-number-answer {
  display: grid;
  grid-template-columns: minmax(130px, 280px) auto auto;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.measures-number-answer input {
  min-width: 0;
  height: 68px;

  padding: 0 16px;

  border: 2px solid rgba(47, 141, 246, 0.28);
  border-radius: 18px;

  color: #1f5b96;
  background: #fff;

  font-family: "Comfortaa", sans-serif;
  font-size: 31px;
  font-weight: 700;
  text-align: center;

  outline: none;
}

.measures-number-answer input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 5px rgba(47, 141, 246, 0.1);
}

.measures-number-answer input.is-wrong {
  border-color: #f1a4af;
  background: #fff3f5;

  animation: trainer-shake 0.34s ease;
}

.measures-number-answer input.is-correct {
  border-color: #71d5a5;
  background: #effff5;
}

.measures-answer-unit {
  color: #456987;

  font-size: 20px;
  font-weight: 800;
}


/* =========================
   Весы
   ========================= */

.scales-stage {
  position: relative;

  width: min(760px, 100%);
  aspect-ratio: 16 / 9;

  margin: 0 auto;

  overflow: hidden;

  border: 1px solid rgba(47, 141, 246, 0.18);
  border-radius: 24px;

  background: #f9fcff;

  box-shadow: 0 12px 28px rgba(37, 91, 143, 0.1);
}

.scales-background {
  position: absolute;
  inset: 0;

  width: 100%;
  height: 100%;

  object-fit: cover;

  user-select: none;
  pointer-events: none;
}


/* =========================
   Грузы на весах
   ========================= */

.scales-weight-stack {
  position: absolute;

  display: flex;
  align-items: flex-end;
  justify-content: center;

  transform: translate(-50%, -100%);

  pointer-events: none;
}

.scales-weight {
  position: relative;

  flex: 0 0 auto;

  object-fit: contain;

  filter: drop-shadow(0 6px 6px rgba(29, 53, 75, 0.16));
}

.scales-weight-label {
  position: absolute;
  left: 50%;
  bottom: 8%;

  transform: translateX(-50%);

  min-width: 70%;

  padding: 2px 5px;

  border-radius: 999px;

  color: #27465f;
  background: rgba(255, 255, 255, 0.88);

  font-family: "Onest", sans-serif;
  font-size: clamp(32px, 1.5vw, 14px);
  font-weight: 800;
  line-height: 1.1;
  text-align: center;

  white-space: nowrap;
}


/* =========================
   Статус весов
   ========================= */

.scales-status {
  position: absolute;
  top: 14px;
  left: 50%;
  z-index: 5;

  transform: translateX(-50%);

  padding: 8px 14px;

  border: 1px solid rgba(47, 141, 246, 0.18);
  border-radius: 999px;

  color: #496a87;
  background: rgba(255, 255, 255, 0.92);

  box-shadow: 0 6px 14px rgba(37, 91, 143, 0.08);

  font-size: 14px;
  font-weight: 800;

  white-space: nowrap;
}


/* =========================
   Выбор груза
   ========================= */

.weight-picker {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;

  width: min(760px, 100%);
  margin: 18px auto 0;
}

.weight-choice {
  min-height: 74px;

  padding: 9px;

  border: 1px solid rgba(47, 141, 246, 0.22);
  border-radius: 18px;

  color: #245f9c;
  background: #fff;

  box-shadow: 0 8px 18px rgba(37, 91, 143, 0.09);

  font-weight: 800;

  cursor: pointer;

  transition:
    transform 0.18s ease,
    border-color 0.18s ease,
    box-shadow 0.18s ease;
}

.weight-choice:hover:not(:disabled) {
  transform: translateY(-2px);

  border-color: rgba(47, 141, 246, 0.45);

  box-shadow: 0 11px 22px rgba(37, 91, 143, 0.13);
}

.weight-choice:disabled {
  opacity: 0.52;
  cursor: not-allowed;
}


/* Выбранный груз */

.weight-choice.is-selected {
  transform: translateY(-2px);

  border-color: rgba(47, 141, 246, 0.65);

  background: linear-gradient(
    145deg,
    #eaf8ff,
    #fff6cf
  );

  box-shadow: 0 11px 24px rgba(37, 91, 143, 0.16);
}


/* =========================
   Кнопки под выбором груза
   ========================= */

.weight-picker-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;

  width: min(760px, 100%);
  margin: 12px auto 0;
}

.weight-total {
  width: min(760px, 100%);
  margin: 10px auto 0;

  color: #55728c;

  font-size: 15px;
  font-weight: 800;
  text-align: center;
}


/* =========================
   Решение
   ========================= */

.measures-solution {
  width: min(760px, 100%);
  margin: 18px auto 0;

  padding: 18px 20px;

  border: 1px solid rgba(126, 217, 87, 0.34);
  border-radius: 20px;

  background: linear-gradient(
    145deg,
    #f7fff3,
    #eaffdf
  );

  color: #315b3d;

  box-shadow: 0 9px 20px rgba(77, 145, 65, 0.08);
}

.measures-solution h3 {
  margin: 0 0 10px;

  color: #367449;

  font-family: "Comfortaa", sans-serif;
  font-size: 19px;
}

.measures-solution p {
  margin: 7px 0 0;

  line-height: 1.55;
  font-weight: 700;
}

.measures-solution .equation {
  color: #244d32;

  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: clamp(17px, 2.3vw, 21px);
}


/* =========================
   Следующее задание
   ========================= */

.measures-next-wrap {
  margin-top: 18px;
  text-align: center;
}


/* =========================
   Разбор
   ========================= */

.measures-breakdown {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.measures-breakdown-item {
  padding: 16px;

  border: 1px solid rgba(47, 141, 246, 0.18);
  border-radius: 18px;

  background: rgba(255, 255, 255, 0.8);
}

.measures-breakdown-item span {
  display: block;

  color: #668099;

  font-weight: 700;
}

.measures-breakdown-item strong {
  display: block;

  margin-top: 5px;

  color: #245f99;

  font-family: "Comfortaa", sans-serif;
  font-size: 23px;
}


/* =========================
   Адаптив
   ========================= */

@media (max-width: 700px) {
  .measures-number-answer {
    grid-template-columns: 1fr auto;
  }

  .measures-number-answer .trainer-btn {
    grid-column: 1 / -1;
    width: 100%;
  }

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

  .measures-breakdown {
    grid-template-columns: 1fr;
  }

  .scales-status {
    top: 8px;
    font-size: 11px;
  }
}