/* =========================================
   Step Flow (現状 > 決算 > 予算 > 活動)
   ========================================= */

:root {
  --step-accent: #FA5252;
  --step-line: rgba(250, 82, 82, 0.35);
  --step-text: #6b7280;
  --step-text-active: #FA5252;
  --step-surface: rgba(255, 255, 255, 0.78);
  --step-border: rgba(20, 24, 34, 0.06);
}

.policy-step-flow {
  margin-top: 8px;
  margin-bottom: 6px;
}

.policy-step-flow-inner {
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto 1fr auto;
  align-items: start;
  gap: 6px;
  padding: 10px 10px 8px;
  border-radius: 16px;
  border: 1px solid var(--step-border);
  background: var(--step-surface);
  box-shadow:
    6px 6px 14px rgba(24, 29, 39, 0.05),
    -6px -6px 14px rgba(255, 255, 255, 0.75);
}

.policy-step-btn {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 0;
  margin: 0;
  min-width: 0;
  display: grid;
  justify-items: center;
  gap: 5px;
  cursor: pointer;
  color: var(--step-text);
  transition: transform .12s ease;
}

.policy-step-btn:active {
  transform: translateY(1px);
}

.policy-step-icon {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  border: 2px solid rgba(250, 82, 82, 0.35);
  background: #fff;
  position: relative;
  overflow: hidden;
}

.policy-step-icon img {
  width: 24px;
  height: 24px;
  object-fit: contain;
  display: block;
  pointer-events: none;
  user-select: none;
}

.policy-step-icon .icon-on {
  display: none;
}

.policy-step-icon .icon-off {
  display: block;
}

.policy-step-label {
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--step-text);
  white-space: nowrap;
}

/* 接続ライン */
.policy-step-line {
  align-self: center;
  margin-top: -14px; /* 円中心に合わせる */
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    rgba(250, 82, 82, 0.25) 0%,
    rgba(250, 82, 82, 0.45) 50%,
    rgba(250, 82, 82, 0.25) 100%
  );
}

/* アクティブ状態 */
.policy-step-btn.is-active .policy-step-icon {
  background: var(--step-accent);
  border-color: var(--step-accent);
  box-shadow: 0 6px 14px rgba(250, 82, 82, 0.24);
}

.policy-step-btn.is-active .policy-step-icon .icon-on {
  display: block;
}

.policy-step-btn.is-active .policy-step-icon .icon-off {
  display: none;
}

.policy-step-btn.is-active .policy-step-label {
  color: var(--step-text-active);
}

/* 完了済みの見え方（任意。JSで currentより前に付与） */
.policy-step-btn.is-done .policy-step-icon {
  border-color: rgba(250, 82, 82, 0.65);
}

.policy-step-btn.is-done .policy-step-label {
  color: #b14a4a;
}

/* 小さい画面でさらにコンパクト */
@media (max-width: 640px) {
  .policy-step-flow-inner {
    gap: 4px;
    padding: 8px 8px 6px;
    border-radius: 14px;
  }

  .policy-step-icon {
    width: 38px;
    height: 38px;
  }

  .policy-step-icon img {
    width: 21px;
    height: 21px;
  }

  .policy-step-label {
    font-size: 10px;
    letter-spacing: 0;
  }

  .policy-step-line {
    margin-top: -12px;
  }
}