/* ============================================================
   SpatialGenerator — pages.css
   サブページ固有スタイル（HowToUse / Privacy / Terms / Contact）
   ============================================================ */

/* ---------- Page Hero (subpages) ---------- */
.page-hero {
  padding-top: calc(var(--nav-h) + 80px);
  padding-bottom: 0px;
  position: relative;
  overflow: hidden;
}
.page-hero__label {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-start);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.page-hero__label::before {
  content: '';
  display: block;
  width: 28px; height: 1.5px;
  background: var(--c-start);
}
.page-hero__title {
  font-family: var(--font-en);
  font-size: clamp(36px, 6vw, 80px);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.05;
  color: var(--text-main);
  margin-bottom: 24px;
}
.page-hero__subtitle {
  font-size: clamp(16px, 1.8vw, 20px);
  color: var(--text-sub);
  /*
  max-width: 500px;
  */
  line-height: 1.75;
}

/* ============================================================
   HOW TO USE
   ============================================================ */

/* Slider Tip */
.slider-tip {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: rgba(64, 160, 199, 0.07);
  border: 1.5px solid rgba(64, 160, 199, 0.25);
  border-radius: 16px;
  padding: 20px 24px;
}

.slider-tip__icon {
  font-size: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}

.slider-tip__body {
  flex: 1;
}

.slider-tip__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 8px;
}

.slider-tip__list {
  margin: 0;
  padding-left: 20px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
}

.slider-tip__list li {
  margin-bottom: 4px;
}

.slider-tip__list li strong {
  color: var(--text-main);
}

.parameter-row__header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.parameter-row__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.parameter-row__icon img {
  display: block;
  width: 28px;
  height: 28px;
}

/* Parameters Section */
.parameters-section {
  padding: 80px 0;
}

.parameters-group-heading {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-start);
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
}

.parameters-group-heading::after {
  content: '';
  flex: 1;
  height: 1.5px;
  background: var(--c-start);
  opacity: 0.3;
}

.parameters-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
  margin-top: 40px;
  margin-bottom: 40px;
}

.parameter-row {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@media (min-width: 768px) {
  .parameter-row {
    flex-direction: row;
    align-items: stretch;
  }
  
  /* 偶数行は画像を右側に配置 */
  .parameter-row:nth-child(even) {
    flex-direction: row-reverse;
  }
}

.parameter-row:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.06);
}

.parameter-row__image {
  flex: 1;
  min-width: 300px;
  
  background: #f8f9fa;
  
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.parameter-row__image img {
  width: 100%;
  max-width: 320px;
  height: auto;
  
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  
}

.parameter-row__image-note {
  width: 100%;
  max-width: 320px;
  margin-top: 12px;
  margin-bottom: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--text-sub);
}

.parameter-row__image-note strong {
  color: var(--text-main);
}

.parameter-row__content {
  flex: 1.5;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;

  /*画像の白黒を反転させるフィルタ
  filter: invert(100%) sepia(100%) grayscale(100%) brightness(150%);
  */
}

.parameter-row__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.parameter-row__content p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 12px;
}

.parameter-row__content p strong {
  color: var(--text-main);
  display: block;
  margin-top: 16px;
  margin-bottom: 4px;
}

.parameter-row__content ul {
  margin-bottom: 16px;
  padding-left: 20px;
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.7;
}

.parameter-row__content li {
  margin-bottom: 8px;
}

.parameter-row__content li strong {
  color: var(--text-main);
  display: inline;
  margin: 0;
}

/* Steps */
.steps-grid {
  margin-top: 60px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2px;
  border-radius: 20px;
  overflow: hidden;
}
.step-card {
  padding: 44px 36px;
  background: rgba(253,252,250,0.8);
  backdrop-filter: blur(10px);
  position: relative;
}
.step-card__num {
  font-family: var(--font-en);
  font-size: 64px;
  font-weight: 900;
  line-height: 1;
  color: rgba(44,42,40,0.06);
  margin-bottom: 12px;
  letter-spacing: -0.04em;
}
.step-card__icon {
  font-size: 28px;
  margin-bottom: 16px;
}
.step-card__title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.step-card__text {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
}
.step-card__accent-line {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: linear-gradient(90deg, var(--step-color, var(--c-spatial)), transparent);
}

/* FAQ */
.faq-section {}
.faq-section .section-title { margin-bottom: 48px; }
.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 60px;
}
@media (max-width: 900px) {
  .faq-grid { grid-template-columns: 1fr; }
}

/* Checklist (recommend) */
.recommend-section {}
.checklist {
  margin-top: 48px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
}
.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 24px;
  background: rgba(253,252,250,0.8);
  border-radius: 12px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}
.checklist-item::before {
  content: '✅';
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ============================================================
   DOCUMENT PAGES (Privacy / Terms)
   ============================================================ */
.doc-page main {
  padding-top: calc(var(--nav-h) + 60px);
  padding-bottom: var(--section-py);
}
.doc-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--container-px);
}
.doc-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.doc-date {
  font-size: 13px;
  color: var(--text-sub);
  margin-bottom: 56px;
  font-family: var(--font-en);
}
.doc-section {
  margin-bottom: 52px;
}
.doc-section h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--c-spatial);
  display: inline-block;
}
.doc-section h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin: 24px 0 12px;
}
.doc-section p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.9;
  margin-bottom: 14px;
}
.doc-section ul {
  margin: 12px 0 20px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.doc-section ul li {
  font-size: 14px;
  color: var(--text-sub);
  padding-left: 1.4em;
  position: relative;
  line-height: 1.75;
}
.doc-section ul li::before {
  content: '•';
  position: absolute;
  left: 0.3em;
  color: var(--c-spatial);
}
.doc-section .notice-box {
  background: rgba(64,160,199,0.08);
  border-left: 3px solid var(--c-start);
  padding: 20px 24px;
  border-radius: 0 12px 12px 0;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  margin: 20px 0;
}

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: flex-start;
  margin-top: 60px;
}
@media (max-width: 800px) {
  .contact-grid { grid-template-columns: 1fr; }
}

.contact-info {}
.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1.5px solid rgba(44,42,40,0.1);
}
.contact-info-item:first-child { padding-top: 0; }
.contact-info-icon {
  width: 44px; height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-info-item h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-sub);
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}
.contact-info-item p {
  font-size: 15px;
  color: var(--text-main);
  line-height: 1.65;
}
.contact-info-item a {
  color: var(--c-start);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Form */
.contact-form {
  background: rgba(253,252,250,0.8);
  backdrop-filter: blur(14px);
  border-radius: 24px;
  padding: clamp(32px, 4vw, 52px);
  box-shadow: 0 4px 32px rgba(74,67,62,0.08);
}
.form-group {
  margin-bottom: 24px;
}
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-sub);
  margin-bottom: 8px;
}
.form-label .required {
  color: var(--c-stop);
  margin-left: 4px;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 14px 16px;
  font-family: var(--font-ja);
  font-size: 15px;
  color: var(--text-main);
  background: rgba(255,255,255,0.7);
  border: 1.5px solid rgba(44,42,40,0.15);
  border-radius: 12px;
  outline: none;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
  -webkit-appearance: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--c-start);
  box-shadow: 0 0 0 3px rgba(64,160,199,0.18);
  background: white;
}
.form-input.has-error,
.form-select.has-error,
.form-textarea.has-error {
  border-color: var(--c-stop);
  box-shadow: 0 0 0 3px rgba(234,107,93,0.15);
}
.form-textarea { resize: vertical; min-height: 140px; }
.form-error {
  font-size: 12px;
  color: var(--c-stop);
  margin-top: 6px;
  display: none;
  align-items: center;
  gap: 4px;
}
.form-error.is-show { display: flex; }

.form-submit-wrap {
  margin-top: 8px;
}
.btn--form {
  width: 100%;
  justify-content: center;
  padding: 18px;
  font-size: 14px;
  border-radius: 14px;
}
.form-note {
  font-size: 12px;
  color: var(--text-sub);
  text-align: center;
  margin-top: 16px;
  line-height: 1.7;
}

/* Success message */
.form-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}
.form-success.is-show { display: block; }
.form-success__icon {
  font-size: 48px;
  margin-bottom: 16px;
}
.form-success__title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.form-success__text {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.75;
}

/* ============================================================
   TABLE OF CONTENTS (how-to-use.html)
   ============================================================ */
.toc {
  padding: 40px 0;
}
.toc > .container {
  display: flex;
  align-items: flex-start;
  gap: 40px;
}
.toc__label {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--c-start);
  white-space: nowrap;
  padding-top: 4px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.toc__label::before {
  content: '';
  display: block;
  width: 28px; height: 1.5px;
  background: var(--c-start);
}
.toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 32px;
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: toc-counter;
}
.toc__item {
  counter-increment: toc-counter;
}
.toc__link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.2s;
}
.toc__link::before {
  content: counter(toc-counter, decimal-leading-zero);
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  color: var(--c-start);
  letter-spacing: 0.05em;
}
.toc__link:hover { color: var(--c-start); }
.toc__sublist {
  list-style: none;
  padding: 0;
  margin: 8px 0 0 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.toc__sublist li a {
  font-size: 13px;
  color: var(--text-sub);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s;
}
.toc__sublist li a::before {
  content: '—';
  font-size: 10px;
  color: var(--text-sub);
  opacity: 0.5;
}
.toc__sublist li a:hover { color: var(--c-start); }

@media (max-width: 768px) {
  .toc > .container {
    flex-direction: column;
    gap: 16px;
  }
  .toc__list {
    flex-direction: column;
    gap: 16px;
  }
}