/* ===================================
   Teachers -- 講師紹介ページ固有スタイル
   Warm / Friendly / Approachable redesign
   =================================== */

/* --- 塾長プロフィール --- */
.principal {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 48px;
  align-items: start;
}

.principal__photo {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(62, 58, 53, 0.10);
}

.principal__photo img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.principal__content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.principal__name {
  font-size: 1.75rem;
  font-weight: var(--font-weight-extra-bold, 800);
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.principal__role {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold, 700);
  color: var(--color-text);
  margin-top: -4px;
  letter-spacing: 0.02em;
}

.principal__bio {
  font-size: 1rem;
  line-height: 2;
  color: var(--color-text);
}

.principal__qualifications {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.principal__qualifications li {
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  background-color: var(--color-primary-light, #E8F5E9);
  padding: 6px 16px;
  border-radius: 9999px;
  transition: background-color 0.3s ease;
  letter-spacing: 0.02em;
}

.principal__qualifications li:hover {
  background-color: var(--color-bg-alt, #F5F0E8);
}

/* --- 講師カードグリッド --- */
.teacher-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.teacher-card {
  background-color: var(--color-white);
  border-radius: 24px;
  box-shadow: 0 2px 12px rgba(62, 58, 53, 0.08);
  overflow: hidden;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.teacher-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 20px rgba(62, 58, 53, 0.10);
}

.teacher-card__photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background-color: var(--color-bg-alt, #F5F0E8);
}

.teacher-card__body {
  padding: 24px;
}

.teacher-card__name {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 8px;
}

.teacher-card__subjects {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
  margin-bottom: 16px;
}

.teacher-card__subject {
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  background-color: var(--color-accent);
  padding: 3px 12px;
  border-radius: 9999px;
  letter-spacing: 0.02em;
}

.teacher-card__message {
  font-size: 0.9375rem;
  color: var(--color-text);
  line-height: 1.8;
}

/* --- 教育方針 / お約束セクション --- */
.philosophy-list,
.promise-list {
  max-width: 800px;
  margin: 0 auto;
  counter-reset: philosophy;
}

.philosophy-item,
.promise-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  margin-bottom: 16px;
  align-items: flex-start;
  background-color: var(--color-white);
  border-radius: 16px;
  border-left: 4px solid var(--color-primary);
  box-shadow: 0 2px 12px rgba(62, 58, 53, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.philosophy-item:hover,
.promise-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(62, 58, 53, 0.10);
  background-color: var(--color-primary-light, #E8F5E9);
}

.philosophy-item__number,
.promise-item__number {
  flex: 0 0 auto;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark, #1B5E3A));
  color: var(--color-white);
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(46, 125, 79, 0.2);
}

.philosophy-item__content,
.promise-item__content {
  flex: 1;
}

.philosophy-item__title,
.promise-item__title {
  font-size: 1.0625rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: 6px;
}

.philosophy-item__text,
.promise-item__text {
  font-size: 1rem;
  color: var(--color-text);
  line-height: 1.8;
}

/* --- 生徒の声（テスティモニアル） --- */
.teacher-testimonials {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.teacher-testimonial {
  background-color: var(--color-white);
  border-radius: 24px;
  padding: 32px;
  box-shadow: 0 2px 12px rgba(62, 58, 53, 0.08);
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.teacher-testimonial:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(62, 58, 53, 0.10);
}

.teacher-testimonial::before {
  content: '\201C';
  font-size: 4rem;
  color: var(--color-accent);
  opacity: 0.25;
  position: absolute;
  top: 12px;
  left: 24px;
  line-height: 1;
  font-family: Georgia, serif;
}

/* Speech-bubble tail */
.teacher-testimonial::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 40px;
  width: 24px;
  height: 24px;
  background-color: var(--color-white);
  box-shadow: 2px 2px 4px rgba(62, 58, 53, 0.06);
  transform: rotate(45deg);
  border-radius: 0 0 4px 0;
}

.teacher-testimonial__text {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-top: 24px;
}

.teacher-testimonial__footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 16px;
  margin-top: 4px;
  border-top: 2px solid var(--color-bg-alt, #F5F0E8);
}

.teacher-testimonial__author {
  font-size: 0.875rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.teacher-testimonial__grade {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  background-color: var(--color-primary-light, #E8F5E9);
  padding: 2px 12px;
  border-radius: 9999px;
  letter-spacing: 0.02em;
  font-weight: var(--font-weight-bold);
}

/* ===================================
   レスポンシブ
   =================================== */

@media (max-width: 768px) {
  .principal {
    grid-template-columns: 1fr;
    gap: 32px;
    text-align: center;
  }

  .principal__photo {
    max-width: 240px;
    margin: 0 auto;
    border-radius: 50%;
  }

  .principal__photo img {
    aspect-ratio: 1 / 1;
    border-radius: 50%;
  }

  .principal__qualifications {
    justify-content: center;
  }

  .teacher-cards {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .teacher-testimonials {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .philosophy-item,
  .promise-item {
    padding: 20px;
  }
}

@media (max-width: 480px) {
  .principal__photo {
    max-width: 180px;
  }

  .teacher-cards {
    grid-template-columns: 1fr;
  }

  .teacher-card {
    border-radius: 16px;
  }

  .philosophy-item,
  .promise-item {
    gap: 14px;
    padding: 16px;
    border-radius: 12px;
  }

  .philosophy-item__number,
  .promise-item__number {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .teacher-testimonial {
    padding: 24px 20px;
    border-radius: 16px;
  }

  .teacher-testimonial::after {
    display: none;
  }
}