/* ===== Research Papers ===== */

/* Page Hero */
.rp-page-hero { position: relative; overflow: hidden; padding: 64px 0 60px; background: conic-gradient(from 90deg at 50% 50%, rgba(223,223,223,0.6) 0%, rgb(245,245,245) 100%); }
.rp-page-hero-bg { position: absolute; inset: 0; background: url('../img/research-papers/bg.png') center / cover no-repeat; opacity: 0.7; pointer-events: none; }
.rp-page-hero-inner { position: relative; z-index: 1; padding-top: 0; padding-bottom: 0; }
.rp-breadcrumb { font-size: 12px; font-weight: 350; color: #1a1a1a; margin-bottom: 26px; }
.rp-breadcrumb a { color: #1a1a1a; text-decoration: none; }
.rp-breadcrumb span[aria-current] { color: #999; }
.rp-page-title { font-size: 40px; font-weight: var(--font-weight-bold); color: #1a1a1a; line-height: 64px; }
.rp-page-sub { font-size: var(--font-size-body); font-weight: 350; color: #1a1a1a; line-height: 25.6px; margin-top: 6px; }

/* Papers list */
.papers-section { padding: 64px 0; }
.paper-card { display: flex; align-items: center; gap: 0; background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 25px; margin-bottom: 21px; }
.paper-icon-wrap { width: 64px; height: 64px; flex-shrink: 0; background: #f5f5f5; border-radius: 8px; display: flex; align-items: center; justify-content: center; margin-right: 24px; }
.paper-info { flex: 1; min-width: 0; }
.paper-author { font-size: 16px; font-weight: 400; color: #1a1a1a; line-height: 25.6px; }
.paper-title { font-size: 20px; font-weight: var(--font-weight-bold); color: #1a1a1a; line-height: 25.6px; }
.paper-venue { font-size: 14px; font-weight: 400; color: #1a1a1a; line-height: 25.6px; }
.paper-action { flex-shrink: 0; margin-left: 24px; }
.paper-action a { display: flex; align-items: center; color: #1a1a1a; }
.paper-action a:hover { color: var(--color-honda-red); }

/* Pagination */
.rp-pagination { display: flex; align-items: center; justify-content: center; gap: 14px; padding: 40px 16px 8px; }
.rp-page-btn { background: none; border: none; cursor: pointer; padding: 4px; display: flex; align-items: center; color: var(--color-honda-red); }
.rp-page-btn:disabled { opacity: 0.3; cursor: default; }
.rp-page-num { background: none; border: none; cursor: pointer; width: 24px; height: 24px; border-radius: 24px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; color: var(--color-honda-red); }
.rp-page-num.active { background: var(--color-honda-red); color: #fff; }
.rp-page-ellipsis { font-size: 12px; font-weight: 700; color: var(--color-honda-red); }

/* DL Banner */
.dl-banner { background: #fff; border: 1px solid #e0e0e0; border-radius: 8px; padding: 40px 41px; text-align: center; margin-top: 40px; display: flex; flex-direction: column; align-items: center; gap: 20px; }
.dl-banner p { font-size: var(--font-size-body); font-weight: 350; color: #777; line-height: 25.6px; }

/* ===== Contact Form ===== */
.contact-section { padding: var(--section-padding); }
.contact-grid { display: grid; grid-template-columns: 3fr 2fr; gap: 60px; }
.form-group { margin-bottom: 24px; }
.form-label { display: block; font-size: var(--font-size-small); color: var(--color-text-secondary); margin-bottom: 8px; }
.form-label .required { color: var(--color-honda-red); margin-left: 4px; }
.form-input, .form-textarea {
  width: 100%; background: var(--color-bg-card); border: 1px solid var(--color-border-light);
  border-radius: var(--button-border-radius); padding: 14px 16px; color: var(--color-text-primary);
  font-size: var(--font-size-body); transition: var(--transition-default);
}
.form-input:focus, .form-textarea:focus { outline: none; border-color: var(--color-honda-red); }
.form-input.error, .form-textarea.error { border-color: var(--color-error); }
.form-textarea { min-height: 150px; resize: vertical; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--color-text-dim); }
.error-message { font-size: var(--font-size-caption); color: var(--color-error); margin-top: 6px; display: none; }
.form-group.has-error .error-message { display: block; }
.checkbox-group { display: flex; align-items: start; gap: 10px; margin-bottom: 32px; }
.checkbox-group input[type="checkbox"] { width: 18px; height: 18px; margin-top: 2px; accent-color: var(--color-honda-red); }
.checkbox-group label { font-size: var(--font-size-small); color: var(--color-text-muted); }
.checkbox-group a { color: var(--color-honda-red); text-decoration: underline; }
.contact-info { padding-top: 16px; }
.contact-info h3 { font-size: var(--font-size-h4); margin-bottom: 24px; }
.contact-info p { font-size: var(--font-size-small); color: var(--color-text-muted); line-height: 1.8; margin-bottom: 16px; }
.contact-info .response-time { padding: 16px; background: var(--color-bg-card); border-radius: var(--card-border-radius); border-left: 3px solid var(--color-honda-red); }
.form-select {
  width: 100%; background: var(--color-bg-card); border: 1px solid var(--color-border-light);
  border-radius: var(--button-border-radius); padding: 14px 16px; color: var(--color-text-primary);
  font-size: var(--font-size-body); transition: var(--transition-default);
  appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23AAAAAA' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center;
  cursor: pointer;
}
.form-select:focus { outline: none; border-color: var(--color-honda-red); }
.form-select option { background: #FFFFFF; color: var(--color-text-primary); }

/* Thanks Page */
.thanks-section { padding: 160px 0; text-align: center; }
.thanks-icon { width: 80px; height: 80px; margin: 0 auto 24px; border: 3px solid var(--color-success); border-radius: 50%; display: flex; align-items: center; justify-content: center; }
.thanks-icon svg { width: 40px; height: 40px; stroke: var(--color-success); fill: none; stroke-width: 2; }
.thanks-title { font-size: var(--font-size-h2); margin-bottom: 16px; }
.thanks-text { font-size: var(--font-size-body); color: var(--color-text-muted); margin-bottom: 40px; }

/* ===== Downloads ===== */
.downloads-section { padding: var(--section-padding); }
.dl-category { margin-bottom: 48px; }
.dl-category-title { font-size: var(--font-size-h4); font-weight: var(--font-weight-bold); margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid var(--color-border); }
.dl-item { display: flex; align-items: center; gap: 20px; padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,0.06); }
.dl-item:last-child { border-bottom: none; }
.dl-file-icon { width: 48px; height: 48px; flex-shrink: 0; background: var(--color-bg-card); border-radius: 8px; display: flex; align-items: center; justify-content: center; }
.dl-file-icon svg { width: 24px; height: 24px; stroke: var(--color-text-muted); fill: none; stroke-width: 1.5; }
.dl-file-info { flex: 1; }
.dl-file-name { font-size: var(--font-size-body); font-weight: var(--font-weight-medium); margin-bottom: 4px; }
.dl-file-desc { font-size: var(--font-size-small); color: var(--color-text-muted); }
.dl-file-size { font-size: var(--font-size-caption); color: var(--color-text-dim); flex-shrink: 0; margin-right: 16px; }

/* ===== Humanoids Summit ===== */
.summit-rd {
  padding: 100px 0;
  background: #0A1A2E;
  color: #fff;
}
.summit-rd-title-wrap {
  text-align: center;
  margin-bottom: 32px;
}
.summit-rd-title {
  font-family: var(--font-heading-en);
  font-size: 48px;
  font-weight: var(--font-weight-bold);
  letter-spacing: 4px;
  margin-bottom: 16px;
  color: rgba(255,255,255,0.95);
}
.summit-rd-lead {
  font-size: var(--font-size-body);
  color: rgba(255,255,255,0.85);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.8;
}
.summit-rd-card img {
  width: 100%;
  display: block;
  border-radius: 32px;
  box-shadow: 0 0 44px 10px rgba(59, 104, 106, 0.25);
}
.summit-rd-cta {
  text-align: center;
  margin-top: 32px;
}
.summit-rd-cta .btn-hero {
  width: auto;
  display: inline-flex;
}
.outline-section { padding: var(--section-padding); background: var(--color-bg-secondary); }
.outline-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--color-border); border-radius: var(--card-border-radius); overflow: hidden; }
.outline-item { padding: 32px 24px; border-right: 1px solid var(--color-border); }
.outline-item:last-child { border-right: none; }
.outline-label { font-size: var(--font-size-caption); color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.outline-value { font-size: var(--font-size-body); font-weight: var(--font-weight-medium); }
.summit-exhibits { padding: 64px 40px; }
.summit-exhibits .section-title { font-size: 32px; letter-spacing: 0.09375em; }
.summit-exhibits .tech-item { display: flex; gap: 60px; align-items: center; }
.summit-exhibits .tech-item.reverse { flex-direction: row-reverse; }
.summit-exhibits .tech-item + .tech-item { padding-top: 32px; }
.summit-exhibits .tech-video { position: relative; flex: 0 0 calc(50% - 30px); aspect-ratio: 530/298; overflow: hidden; border-radius: 4px; }
.summit-exhibits .tech-video img { width: 100%; height: 100%; object-fit: cover; }
.summit-exhibits .tech-content { flex: 1; display: flex; flex-direction: column; gap: 7px; }
.summit-exhibits .tech-name { font-size: 24px; font-weight: var(--font-weight-bold); line-height: 1.6; color: #1a1a1a; }
.summit-exhibits .tech-desc { font-weight: 350; font-size: var(--font-size-body); line-height: 1.8; color: #444444; }

/* ===== Summit Exhibits with Coming Soon ===== */
.summit-exhibits-wrap { position: relative; }
.summit-exhibits-dim { opacity: 0.1; display: flex; flex-direction: column; gap: 48px; }
.summit-coming-soon {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.coming-soon-inner {
  text-align: center;
  max-width: 840px;
  width: 100%;
  padding: 40px;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 0 34px 0 rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.coming-soon-title {
  font-family: var(--font-heading-en), 'Noto Sans JP', sans-serif;
  font-size: 48px;
  font-weight: var(--font-weight-bold);
  color: #1a1a1a;
  line-height: 1.33;
}
.coming-soon-sub {
  font-size: 24px;
  font-weight: var(--font-weight-bold);
  color: #777777;
  line-height: 1.6;
}
.coming-soon-desc {
  font-size: var(--font-size-body);
  font-weight: 350;
  color: #444444;
  line-height: 1.8;
  text-align: center;
}

.summit-contact { padding: var(--section-padding); background: var(--color-bg-secondary); text-align: center; }
.summit-contact p { font-size: var(--font-size-body); color: var(--color-text-secondary); margin-bottom: 24px; }

/* ===== Summit Info Card ===== */
.summit-info-section {
  padding: 0 0 48px;
  background: var(--color-bg-primary);
}
.summit-info-card {
  margin-bottom: 32px;
}
.summit-info-card img {
  width: 100%;
  display: block;
  border-radius: var(--card-border-radius);
}
.summit-info-cta {
  text-align: center;
}
.summit-info-cta .btn-hero {
  width: auto;
  display: inline-flex;
}


/* ===== Technology Page ===== */
.tech-detail-section { padding: var(--section-padding); }
.tech-detail-section.alt { background: var(--color-bg-secondary); }
.tech-detail-item { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.tech-detail-item.reverse .tech-detail-content { order: 2; }
.tech-detail-item.reverse .tech-detail-visual { order: 1; }
.tech-detail-heading { font-size: var(--font-size-h2); font-weight: var(--font-weight-bold); margin-bottom: 4px; }
.tech-detail-sub { font-size: var(--font-size-body); color: var(--color-text-muted); margin-bottom: 24px; }
.tech-detail-desc { font-size: var(--font-size-body); color: var(--color-text-secondary); line-height: var(--line-height-body); }
.tech-detail-visual { border-radius: var(--card-border-radius); overflow: hidden; }
.tech-detail-visual img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }

.tech-performance-section { padding: var(--section-padding); background: var(--color-bg-primary); }
.performance-chart { max-width: 900px; margin: 0 auto; }
.perf-row { margin-bottom: 32px; }
.perf-label { display: block; font-size: var(--font-size-small); color: var(--color-text-secondary); margin-bottom: 12px; font-weight: var(--font-weight-medium); }
.perf-bar-wrap { display: flex; flex-direction: column; gap: 6px; }
.perf-bar {
  height: 36px; border-radius: 4px; display: flex; align-items: center; padding: 0 16px;
  font-size: var(--font-size-small); font-weight: var(--font-weight-bold); color: var(--color-white);
  transition: width 1s ease;
}
.perf-bar.honda { background: var(--color-honda-red); }
.perf-bar.competitor { background: var(--color-border-light); }
.perf-bar span { white-space: nowrap; }
.perf-legend { display: flex; gap: 32px; margin-top: 40px; justify-content: center; }
.perf-legend-item { display: flex; align-items: center; gap: 8px; font-size: var(--font-size-small); color: var(--color-text-muted); }
.perf-legend-color { width: 16px; height: 16px; border-radius: 3px; flex-shrink: 0; }
.perf-legend-color.honda { background: var(--color-honda-red); }
.perf-legend-color.competitor { background: var(--color-border-light); }

/* ===== Vision Page ===== */
.vision-statement-section { padding: var(--section-padding); background: var(--color-bg-secondary); }
.vision-statement { max-width: 800px; margin: 0 auto; text-align: center; }
.vision-statement p { font-size: var(--font-size-h4); color: var(--color-text-secondary); line-height: 2; }

.vision-history-section { padding: var(--section-padding); }
.history-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.history-content { display: flex; flex-direction: column; gap: 32px; }
.history-topic h3 { font-size: var(--font-size-h4); font-weight: var(--font-weight-bold); margin-bottom: 12px; color: var(--color-text-primary); }
.history-topic p { font-size: var(--font-size-body); color: var(--color-text-secondary); line-height: var(--line-height-body); }

.timeline { position: relative; padding-left: 80px; }
.timeline::before {
  content: ''; position: absolute; left: 54px; top: 0; bottom: 0;
  width: 2px; background: var(--color-border);
}
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-year {
  position: absolute; left: -80px; top: 0;
  font-family: var(--font-heading-en); font-size: var(--font-size-body);
  font-weight: var(--font-weight-bold); color: var(--color-honda-red);
  width: 60px; text-align: right;
}
.timeline-dot {
  position: absolute; left: -30px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--color-honda-red); border: 2px solid #FFFFFF;
}
.timeline-text h4 { font-size: var(--font-size-body); font-weight: var(--font-weight-bold); margin-bottom: 4px; }
.timeline-text p { font-size: var(--font-size-small); color: var(--color-text-muted); line-height: 1.6; }
.timeline-item.future .timeline-year { color: var(--color-text-dim); }
.timeline-item.future .timeline-dot { background: var(--color-border-light); }

/* ===== Recruit Page ===== */
.recruit-positions-section { padding: var(--section-padding); }
.positions-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.position-card {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--card-border-radius); padding: 32px 24px; text-align: center;
  transition: var(--transition-default); box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.position-card:hover { transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,0,0,0.1); border-color: var(--color-border-light); }
.position-icon { margin-bottom: 20px; }
.position-icon svg { width: 48px; height: 48px; color: var(--color-text-secondary); }
.position-title { font-size: var(--font-size-body); font-weight: var(--font-weight-bold); margin-bottom: 4px; }
.position-sub { font-size: var(--font-size-small); color: var(--color-text-dim); margin-bottom: 12px; }
.position-desc { font-size: var(--font-size-small); color: var(--color-text-muted); margin-bottom: 24px; line-height: 1.6; }
.position-card .btn-primary { font-size: 12px; padding: 10px 24px; }

.recruit-process-section { padding: var(--section-padding); background: var(--color-bg-secondary); }
.process-flow { display: flex; align-items: flex-start; justify-content: center; gap: 16px; flex-wrap: wrap; }
.process-step {
  background: var(--color-bg-card); border: 1px solid var(--color-border);
  border-radius: var(--card-border-radius); padding: 32px 24px; text-align: center;
  flex: 1; min-width: 160px; max-width: 220px;
}
.process-number {
  font-family: var(--font-heading-en); font-size: var(--font-size-h2);
  font-weight: var(--font-weight-bold); color: var(--color-honda-red); margin-bottom: 12px;
}
.process-step h3 { font-size: var(--font-size-body); font-weight: var(--font-weight-bold); margin-bottom: 8px; }
.process-step p { font-size: var(--font-size-small); color: var(--color-text-muted); line-height: 1.6; }
.process-arrow { display: flex; align-items: center; padding-top: 40px; }
.process-arrow svg { width: 24px; height: 24px; color: var(--color-text-dim); }
.recruit-cta { text-align: center; margin-top: 48px; }