/* =========================================================
   ДОБРЫНЯ-ЭРУДИТ — МАТЕМАТИЧЕСКИЙ РЕБУС
   ========================================================= */

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

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

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

.rebus-exercise-card {
  max-width: 900px;
  min-height: 600px;
  margin: 0 auto;
}

.rebus-board {
  width: min(700px, 100%);
  margin: 10px auto 0;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid rgba(47,141,246,.18);
  border-radius: 26px;
  background:
    radial-gradient(circle at 84% 15%, rgba(255,227,107,.24), transparent 34%),
    linear-gradient(145deg, #fffef2, #fff9bf);
  box-shadow: 0 12px 28px rgba(37,91,143,.09);
}

.rebus-question-row {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: clamp(16px, 4vw, 34px);
  margin-bottom: 22px;
}

.rebus-question-item {
  display: grid;
  grid-template-columns: 74px auto;
  align-items: center;
  gap: 3px;
}

.rebus-question-item img,
.rebus-icon {
  width: 74px;
  height: 74px;
  object-fit: contain;
}

.rebus-question-mark {
  color: #263d52;
  font-family: "Comfortaa", sans-serif;
  font-size: 34px;
  font-weight: 700;
}

.rebus-equations {
  display: grid;
  gap: 12px;
}

.rebus-equation {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 9px;
  min-height: 72px;
  color: #223c54;
  font-family: "Comfortaa", "Onest", sans-serif;
  font-size: clamp(23px, 4vw, 34px);
  font-weight: 700;
}

.rebus-equation .rebus-icon {
  width: 58px;
  height: 58px;
}

.rebus-answer-area {
  width: min(720px, 100%);
  margin: 22px auto 0;
}

.rebus-inputs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.rebus-input-card {
  display: grid;
  justify-items: center;
  gap: 8px;
  padding: 14px;
  border: 1px solid rgba(47,141,246,.18);
  border-radius: 20px;
  background: rgba(255,255,255,.9);
}

.rebus-input-card img {
  width: 70px;
  height: 70px;
  object-fit: contain;
}

.rebus-input-card input {
  width: 100%;
  min-width: 0;
  height: 58px;
  border: 2px solid rgba(47,141,246,.26);
  border-radius: 16px;
  padding: 0 10px;
  color: #1f5b96;
  background: #fff;
  font-family: "Comfortaa", sans-serif;
  font-size: 26px;
  font-weight: 700;
  text-align: center;
  outline: none;
}

.rebus-input-card input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 4px rgba(47,141,246,.1);
}

.rebus-input-card input.is-wrong {
  border-color: #f1a4af;
  background: #fff3f5;
  animation: trainer-shake .34s ease;
}

.rebus-input-card input.is-correct {
  border-color: #71d5a5;
  background: #effff5;
}

.rebus-check-wrap {
  margin-top: 14px;
  text-align: center;
}

.rebus-hint {
  margin-right: auto;
  margin-left: auto;
}

.rebus-solution {
  width: min(720px, 100%);
  margin: 18px auto 0;
  padding: 18px 20px;
  border: 1px solid rgba(126,217,87,.34);
  border-radius: 20px;
  background: linear-gradient(145deg, #f7fff3, #eaffdf);
  color: #315b3d;
}

.rebus-solution h3 {
  margin: 0 0 10px;
  color: #367449;
  font-family: "Comfortaa", sans-serif;
  font-size: 19px;
}

.rebus-solution-step {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  margin: 8px 0 0;
  color: #244d32;
  font-size: 17px;
  font-weight: 700;
}

.rebus-solution-step img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

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

@media (max-width: 700px) {
  .rebus-inputs {
    grid-template-columns: 1fr;
  }

  .rebus-input-card {
    grid-template-columns: 66px 1fr;
    align-items: center;
  }

  .rebus-question-item {
    grid-template-columns: 62px auto;
  }

  .rebus-question-item img,
  .rebus-icon {
    width: 62px;
    height: 62px;
  }

  .rebus-equation .rebus-icon {
    width: 48px;
    height: 48px;
  }
}