/* ============================================================
   Blue Academy — Teacher (講師個別ページ)
   ============================================================ */

/* ============ HERO ============ */
.teacher-hero {
  padding: 80px 0 100px;
  border-bottom: 1px solid var(--border);
}

.teacher-hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 80px;
  align-items: end;
}

.teacher-hero-meta {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 32px;
  display: flex;
  align-items: center;
  gap: 14px;
}

.teacher-hero-meta::before {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--blue);
}

.teacher-hero-position {
  font-size: 14px;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 16px;
  letter-spacing: 0.15em;
  font-family: var(--font-en);
  text-transform: uppercase;
}

.teacher-hero-name {
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--ink);
  margin-bottom: 8px;
}

.teacher-hero-name-en {
  font-family: var(--font-en);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 40px;
}

.teacher-hero-tagline {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 800;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--ink);
  padding-top: 32px;
  border-top: 2px solid var(--ink);
  max-width: 640px;
}

.teacher-hero-tagline .blue {
  color: var(--blue);
}

.teacher-hero-photo {
  width: 100%;
  aspect-ratio: 4 / 5;
  background: var(--soft-bg);
  border-radius: 4px;
  overflow: hidden;
}

.teacher-hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  filter: saturate(0.95) contrast(1.05);
}

/* ============ Section base ============ */
.teacher-section {
  padding: 100px 0;
  border-bottom: 1px solid var(--border);
}

/* ============ 01 Profile ============ */
.profile-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: start;
}

.profile-spec-block {
  border-top: 2px solid var(--ink);
  padding-top: 24px;
}

.profile-spec-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

.profile-spec-row dt {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  padding-top: 3px;
}

.profile-spec-row dd {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.6;
}

.profile-spec-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.profile-spec-tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--soft-bg);
  border-radius: 100px;
  font-size: 11px;
  font-weight: 600;
  color: var(--ink);
  border: 1px solid var(--border);
}

.profile-bio {
  font-size: 16px;
  line-height: 2;
  color: var(--ink);
  font-weight: 500;
}

.profile-bio p {
  margin-bottom: 20px;
}

.profile-bio strong {
  font-weight: 700;
  color: var(--blue);
}

/* ============ 02 Background Timeline ============ */
.background-timeline {
  position: relative;
  padding-left: 40px;
  max-width: 800px;
  margin: 0 auto;
}

.background-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--border);
}

.background-item {
  position: relative;
  padding-bottom: 36px;
}

.background-item::before {
  content: "";
  position: absolute;
  left: -38px;
  top: 8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--blue);
  box-sizing: border-box;
}

.background-item:last-child {
  padding-bottom: 0;
}

.background-year {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.background-title {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 8px;
}

.background-desc {
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  font-weight: 500;
}

/* ============ 03 Philosophy ============ */
.philosophy-section {
  background: var(--soft-bg);
}

.philosophy-content {
  max-width: 800px;
  margin: 0 auto;
}

.philosophy-content h3 {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin-top: 36px;
  margin-bottom: 14px;
  color: var(--blue);
  line-height: 1.5;
}

.philosophy-content h3:first-child {
  margin-top: 0;
}

.philosophy-content p {
  font-size: 16px;
  line-height: 2;
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 18px;
}

.philosophy-content strong {
  font-weight: 700;
}

.philosophy-pulled-quote {
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 800;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--ink);
  padding: 40px 0;
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  margin: 40px 0;
  text-align: center;
}

.philosophy-pulled-quote .blue {
  color: var(--blue);
}

/* ============ 04 Achievements ============ */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-top: 1px solid var(--border);
  border-left: 1px solid var(--border);
}

.achievement-card {
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 40px 32px;
  background: var(--white);
}

.achievement-num {
  font-family: var(--font-en);
  font-size: clamp(40px, 4vw, 56px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--blue);
  margin-bottom: 12px;
}

.achievement-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.achievement-sub {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: 8px;
}

.achievements-extra {
  margin-top: 60px;
  padding: 32px;
  background: var(--soft-bg);
  border-radius: 4px;
}

.achievements-extra-title {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.achievements-extra-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.achievements-extra-list li {
  padding: 6px 12px;
  background: var(--white);
  font-size: 12px;
  font-weight: 600;
  color: var(--ink);
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* ============ 05 Voices (dark) ============ */
.voices-section {
  background: var(--ink);
  color: var(--white);
}

.voices-section .section-num {
  color: #4D94FF;
}

.voices-section .section-h2 {
  color: var(--white);
}

.voices-section .section-h2 .blue {
  color: #4D94FF;
}

.voices-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.voice-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 36px 32px;
  border-radius: 4px;
}

.voice-quote {
  font-size: 16px;
  line-height: 1.95;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  margin-bottom: 28px;
  position: relative;
  padding-left: 24px;
  border-left: 2px solid #4D94FF;
}

.voice-attribution {
  font-size: 13px;
  font-weight: 700;
  color: #4D94FF;
  letter-spacing: -0.01em;
}

.voice-attribution .voice-uni {
  display: block;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
  margin-top: 4px;
  letter-spacing: 0.05em;
}

/* ============ 06 5 Questions ============ */
.teacher-qa-list {
  border-top: 2px solid var(--ink);
}

.teacher-qa-item {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 60px;
  align-items: start;
}

.teacher-qa-q {
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -0.01em;
  color: var(--ink);
  position: relative;
  padding-left: 32px;
}

.teacher-qa-q::before {
  content: "Q.";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-en);
  color: var(--blue);
  font-weight: 700;
}

.teacher-qa-a {
  font-size: 15px;
  line-height: 1.95;
  color: var(--muted);
  font-weight: 500;
  position: relative;
  padding-left: 32px;
}

.teacher-qa-a::before {
  content: "A.";
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-en);
  color: var(--ink);
  font-weight: 700;
}

/* ============ 07 Message ============ */
.message-section {
  padding: 120px 0;
  border-bottom: 1px solid var(--border);
}

.message-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}

.message-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 4px;
  overflow: hidden;
  background: var(--soft-bg);
}

.message-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.message-eyebrow {
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--blue);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.message-text {
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 700;
  line-height: 1.85;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 32px;
}

.message-text .blue {
  color: var(--blue);
}

.message-signature {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ============ Teacher Navigation ============ */
.teacher-nav {
  padding: 60px 0;
  background: var(--soft-bg);
}

.teacher-nav-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
}

.teacher-nav-link {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: opacity var(--transition-fast);
}

.teacher-nav-link:hover {
  opacity: 0.7;
}

.teacher-nav-link.next {
  text-align: right;
  align-items: flex-end;
}

.teacher-nav-meta {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--blue);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}

.teacher-nav-link.prev .teacher-nav-meta::before { content: "←"; }
.teacher-nav-link.next .teacher-nav-meta::after { content: "→"; }

.teacher-nav-name {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.teacher-nav-back {
  text-align: center;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--muted);
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 24px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--white);
  transition: border var(--transition-fast), color var(--transition-fast);
}

.teacher-nav-back:hover {
  border-color: var(--ink);
  color: var(--ink);
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .teacher-hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .profile-grid { grid-template-columns: 1fr; gap: 32px; }
  .achievements-grid { grid-template-columns: 1fr; }
  .voices-grid { grid-template-columns: 1fr; }
  .teacher-qa-item { grid-template-columns: 1fr; gap: 12px; }
  .message-grid { grid-template-columns: 1fr; gap: 48px; }
  .background-timeline { padding-left: 32px; }
  .teacher-nav-grid { grid-template-columns: 1fr; gap: 16px; text-align: center; }
  .teacher-nav-link.next { text-align: center; align-items: center; }
}