:root {
  /* 親LPの --lp-color-main / --lp-color-sub が定義されていればそちらを使う。
     未定義の場合はモーダルデフォルト色にフォールバック。 */
  --line-modal-accent:      var(--lp-color-main, #ff6f91);
  --line-modal-accent-deep: var(--lp-color-sub,  #df4a71);

  /* 以下は親LPの色に依存しない固定値 */
  --line-modal-bg-main:   #fffaf7;
  --line-modal-text-main: #462f36;
  --line-modal-text-soft: #745762;
  --line-modal-line:      #06c755; /* コピーボックス・送信ボタン（緑固定） */
}

body.line-modal-open {
  overflow: hidden;
}

body.line-modal-scroll-locked {
  position: fixed;
  inset: 0;
  width: 100%;
  overscroll-behavior: none;
}

.line-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(49, 31, 39, 0.52);
  backdrop-filter: blur(10px);
  z-index: 1000;
}

.line-modal.is-open {
  display: flex;
}

.line-modal__panel {
  position: relative;
  width: min(520px, 100%);
  max-height: min(calc(100dvh - 40px), 860px);
  overflow: auto;
  overscroll-behavior: contain;
  border-radius: 32px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 245, 240, 0.96));
  box-shadow: 0 28px 100px rgba(59, 31, 42, 0.24);
  color: var(--line-modal-text-main);
  font-family: "Zen Maru Gothic", sans-serif;
}

/* ローディングオーバーレイ */
.line-modal__loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(255, 245, 240, 0.96));
  opacity: 1;
  transition: opacity 0.2s ease;
  pointer-events: none;
  touch-action: none;
}

.line-modal.is-loaded .line-modal__loading-overlay {
  opacity: 0;
}

.line-modal.is-busy .line-modal__panel {
  overflow: hidden;
}

.line-modal__loading-icon {
  display: block;
  width: 32px;
  height: 32px;
  border: 3px solid color-mix(in srgb, var(--line-modal-accent) 20%, transparent);
  border-top-color: var(--line-modal-accent);
  border-radius: 50%;
  animation: line-modal-spin 0.7s linear infinite;
}

.line-modal__header,
.line-modal__footer,
.line-modal__content {
  padding-left: 24px;
  padding-right: 24px;
}

.line-modal__close-wrap {
  position: sticky;
  top: 0;
  z-index: 4;
  display: flex;
  justify-content: flex-end;
  padding: 24px 24px 0;
  margin-bottom: -44px;
  pointer-events: none;
}

.line-modal__header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 10px;
}

.line-modal__title {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2rem);
  font-weight: 900;
}

.line-modal__title-store {
  display: block;
  color: var(--line-modal-accent);
  opacity: 0.55;
  font-size: 0.55em;
  font-weight: 700;
  line-height: 1.3;
  margin-top: 2px;
}

.line-modal__close {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--line-modal-accent) 35%, transparent);
  background: linear-gradient(135deg, color-mix(in srgb, var(--line-modal-accent) 8%, #fff), #ffffff);
  color: var(--line-modal-accent-deep);
  font: inherit;
  font-size: 1.35rem;
  font-weight: 700;
  cursor: pointer;
  pointer-events: auto;
}

.line-modal__content {
  display: grid;
  gap: 20px;
  padding-top: 24px;
}

.line-modal__step {
  display: grid;
  gap: 10px;
}

.line-modal__step-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 700;
}

.line-modal__step-num {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  background: #fff;
  color: var(--line-modal-accent);
  border: 2px solid var(--line-modal-accent);
  font-size: 0.8rem;
  font-weight: 900;
}

.line-modal__step-num--outline {
  border-style: dashed;
}

.line-modal__step.is-active .line-modal__step-num {
  background: var(--line-modal-accent);
  color: #fff;
  border-color: var(--line-modal-accent);
}

.line-modal__step-check {
  display: none;
  margin-left: 5px;
  color: var(--line-modal-line);
  font-weight: 700;
}

.line-modal__step.is-done .line-modal__step-check {
  display: inline;
}

.line-modal__step.is-inactive {
  opacity: 0.3;
  pointer-events: none;
}

.line-modal__field,
.line-modal__copy-box {
  width: 100%;
  border-radius: 20px;
  padding: 16px 18px;
  font: inherit;
  color: var(--line-modal-text-main);
}

.line-modal__field {
  border: 1px solid color-mix(in srgb, var(--line-modal-accent) 30%, transparent);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.line-modal__field:focus {
  outline: none;
  border-color: var(--line-modal-accent);
  animation: line-modal-field-glow 1.1s ease-in-out infinite;
}

.line-modal__field--textarea {
  min-height: 100px;
  resize: none;
}

.line-modal__step.is-active .line-modal__field {
  border-color: var(--line-modal-accent);
  background: color-mix(in srgb, var(--line-modal-accent) 6%, transparent);
  animation: line-modal-field-glow 2s ease-in-out infinite;
}

.line-modal__step.is-done .line-modal__field {
  border-color: rgba(105, 194, 90, 0.55);
  background: rgba(105, 194, 90, 0.04);
}

.line-modal__step.is-done .line-modal__field::placeholder {
  color: transparent;
}

.line-modal__radio-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.line-modal__radio-pill {
  position: relative;
}

.line-modal__radio-pill input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.line-modal__radio-pill label {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  border-radius: 999px;
  border: 1.5px solid color-mix(in srgb, var(--line-modal-accent) 32%, transparent);
  background: rgba(255, 255, 255, 0.9);
  color: var(--line-modal-text-soft);
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s, opacity 0.2s;
  user-select: none;
}

.line-modal__radio-pill input[type="radio"]:checked + label {
  background: var(--line-modal-accent);
  border-color: var(--line-modal-accent);
  color: #fff;
}

.line-modal__radio-pill input[type="radio"]:focus-visible + label {
  outline: 2px solid var(--line-modal-accent);
  outline-offset: 3px;
}

.line-modal__step.is-active .line-modal__radio-pill label {
  border: 2px solid color-mix(in srgb, var(--line-modal-accent) 65%, transparent);
  box-shadow: 0 2px 8px color-mix(in srgb, var(--line-modal-accent) 12%, transparent);
  animation: line-modal-pill-glow 2s ease-in-out infinite;
}

.line-modal__radio-pills:has(input[type="radio"]:checked) .line-modal__radio-pill:not(:has(input:checked)) label {
  opacity: 0.35;
}

.line-modal__sub-options {
  margin-top: 10px;
}

.line-modal__sub-options--hidden {
  display: none;
}

.line-modal__sub-label,
.line-modal__message-meta,
.line-modal__note {
  color: var(--line-modal-text-soft);
  font-size: 0.75rem;
}

.line-modal__sub-label {
  margin: 0 0 8px;
}

.line-modal__step-body--full {
  padding-left: 0;
}

.line-modal__message-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 8px;
}

.line-modal__message-meta p {
  margin: 0;
}

.line-modal__copy-wrap {
  position: relative;
  transition: opacity 0.3s ease;
}

.line-modal__step[data-step="4"].is-done ~ .line-modal__copy-wrap .line-modal__copy-box {
  opacity: 0.35;
}

.line-modal__copy-box {
  position: relative;
  min-height: 90px;
  padding: 24px 32px;
  border: none;
  border-radius: 16px;
  background: #bde79b;
  box-shadow: 0 4px 16px rgba(6, 199, 85, 0.2);
  color: #67854f;
  font-size: 0.78rem;
  line-height: 1.75;
  white-space: pre-wrap;
  font-family: "Meiryo", "メイリオ", sans-serif;
  pointer-events: none;
  user-select: none;
}

.line-modal__copy-box::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 50%;
  height: 100%;
  background: linear-gradient(to right, transparent, #bde79b 70%);
  border-radius: 0 16px 16px 0;
  pointer-events: none;
}

.line-modal__copy-value {
  color: #547743;
  font-weight: 600;
}

.line-modal__copy-button {
  position: absolute;
  right: 12px;
  bottom: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  border: none;
  border-radius: 999px;
  background: #fff;
  color: #999;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.14);
  cursor: pointer;
  transition: transform 0.18s, box-shadow 0.18s;
}

.line-modal__copy-button:hover {
  transform: scale(1.06);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.18);
}

.line-modal__copy-hint,
.line-modal__copy-feedback {
  position: absolute;
  right: 20px;
  bottom: 92px;
  color: #1a1a1a;
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
}

.line-modal__copy-hint.is-bouncing {
  opacity: 1;
  animation: line-modal-hint-bounce 0.9s ease-out infinite;
}

.line-modal__copy-feedback.is-visible {
  animation: line-modal-copy-float 1.8s cubic-bezier(0.22, 0.61, 0.36, 1) forwards;
}

.line-modal__footer {
  padding-top: 24px;
  padding-bottom: 24px;
}

.line-modal__submit {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  border: none;
  border-radius: 999px;
  padding: 16px 32px;
  background: linear-gradient(135deg, var(--line-modal-line), #20df72);
  box-shadow: 0 20px 40px rgba(6, 199, 85, 0.28);
  color: #fff;
  font: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.line-modal__submit-label {
  transition: opacity 0.18s ease;
}

.line-modal__submit-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: inherit;
  background: rgba(255, 255, 255, 0.24);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.18s ease;
}

.line-modal__submit.is-loading .line-modal__submit-label {
  opacity: 0;
}

.line-modal__submit.is-loading .line-modal__submit-loading {
  opacity: 1;
}

.line-modal__submit.is-success .line-modal__submit-label {
  opacity: 1;
}

.line-modal__submit.is-success .line-modal__submit-loading {
  opacity: 0;
}

.line-modal__spinner {
  width: 22px;
  height: 22px;
  border: 2.5px solid rgba(255, 255, 255, 0.5);
  border-top-color: #fdf27a;
  border-radius: 50%;
  animation: line-modal-spin 0.7s linear infinite;
}

.line-modal__submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 24px 48px rgba(6, 199, 85, 0.34);
}

.line-modal__submit.is-loading,
.line-modal__submit.is-loading:hover {
  transform: none;
  pointer-events: none;
}

.line-modal__submit.is-loading .line-modal__submit-loading,
.line-modal__submit.is-loading:hover .line-modal__submit-loading {
  opacity: 1;
}

.line-modal__submit:disabled,
.line-modal__submit:disabled:hover {
  background: #c8c8c8;
  box-shadow: none;
  cursor: not-allowed;
  transform: none;
}

.line-modal__note {
  margin: 12px 0 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

@keyframes line-modal-field-glow {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  50% { box-shadow: 0 0 0 5px color-mix(in srgb, var(--line-modal-accent) 18%, transparent); }
}

@keyframes line-modal-pill-glow {
  0%, 100% { box-shadow: 0 0 0 0 transparent; }
  50% { box-shadow: 0 0 0 5px color-mix(in srgb, var(--line-modal-accent) 20%, transparent); }
}

@keyframes line-modal-submit-bounce {
  0%, 100% { transform: translateY(0); }
  40%       { transform: translateY(-10px); }
}

.line-modal__submit.is-bounce {
  animation: line-modal-submit-bounce 0.5s ease;
}

@keyframes line-modal-hint-bounce {
  0%, 100% { transform: translateY(0); }
  30% { transform: translateY(-4px); }
  45% { transform: translateY(0); }
}

@keyframes line-modal-copy-float {
  0% { opacity: 0; transform: translateY(0); }
  18% { opacity: 1; transform: translateY(-10px); }
  65% { opacity: 1; transform: translateY(-26px); }
  100% { opacity: 0; transform: translateY(-44px); }
}

@keyframes line-modal-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 640px) {
  .line-modal__header,
  .line-modal__footer,
  .line-modal__content {
    padding-left: 18px;
    padding-right: 18px;
  }

  .line-modal__panel {
    border-radius: 26px;
  }

  .line-modal__close-wrap {
    padding: 18px 18px 0;
  }

  .line-modal__message-meta {
    gap: 8px;
    font-size: 0.7rem;
  }

  .line-modal__copy-button {
    width: 68px;
    height: 68px;
  }
}