/* ── 강사 소개 (대표 인사말 · 경력 연혁) ── */
.instructors-page {
  background: #fbfbfd;
  --timeline-accent: #4169e1;
  --timeline-accent-glow: rgba(65, 105, 225, .14);
  --timeline-accent-border: rgba(65, 105, 225, .22);
  --timeline-accent-shadow: rgba(65, 105, 225, .1);
}

.instructor-hero {
  max-width: 980px;
  margin: 0 auto;
  padding: 52px 22px 28px;
  text-align: center;
}

.instructor-hero-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #86868b;
  margin-bottom: 10px;
}

.instructor-hero-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1.08;
  color: #1d1d1f;
  margin-bottom: 10px;
}

.instructor-hero-subtitle {
  font-size: 17px;
  color: #6e6e73;
  max-width: 560px;
  margin: 0 auto 12px;
  line-height: 1.55;
}

.instructor-hero-lead {
  font-size: 16px;
  color: #86868b;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.6;
}

.instructor-main {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 22px 72px;
}

.instructor-loading {
  text-align: center;
  padding: 48px 20px;
  color: #86868b;
  font-size: 15px;
}

.instructor-loading--error {
  color: #c62828;
}

.instructor-profile {
  display: flex;
  gap: 32px;
  align-items: center;
  padding: 36px 40px;
  margin-bottom: 28px;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, .06);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, .04);
}

.instructor-profile__photo {
  flex-shrink: 0;
  width: 160px;
  height: 200px;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(145deg, #1d1d1f 0%, #3a3a3c 100%);
}

.instructor-profile__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.instructor-profile__photo--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  font-weight: 800;
  color: rgba(255, 255, 255, .85);
}

.instructor-profile__body {
  min-width: 0;
}

.instructor-profile__name {
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 800;
  color: #1d1d1f;
  letter-spacing: -.02em;
  margin-bottom: 8px;
}

.instructor-profile__role {
  font-size: 17px;
  color: #6e6e73;
  line-height: 1.5;
  margin-bottom: 14px;
}

.instructor-profile__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.instructor-profile__tags span {
  font-size: 13px;
  font-weight: 600;
  color: #1d1d1f;
  background: #f5f5f7;
  border: 1px solid rgba(0, 0, 0, .06);
  border-radius: 999px;
  padding: 6px 12px;
}

.instructor-profile__bio {
  font-size: 15px;
  color: #424245;
  line-height: 1.75;
  white-space: pre-line;
}

.instructor-profile__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.instructor-profile__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: 999px;
  background: #1d1d1f;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s ease, transform .15s ease;
}

.instructor-profile__cta--ghost {
  background: #fff;
  color: #1d1d1f;
  border: 1px solid rgba(0, 0, 0, .12);
}

.instructor-profile__cta--ghost:hover {
  background: #f5f5f7;
}

.instructor-profile__cta:hover {
  background: #333;
}

.instructor-profile__cta--ghost:hover {
  background: #f5f5f7;
}

.instructor-profile__cta:active {
  transform: scale(.98);
}

.instructor-greeting {
  padding: 40px 40px 44px;
  margin-bottom: 28px;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, .06);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, .04);
}

.instructor-section-eyebrow {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #86868b;
  margin-bottom: 8px;
}

.instructor-section-title {
  font-size: clamp(24px, 3.5vw, 32px);
  font-weight: 700;
  color: #1d1d1f;
  letter-spacing: -.015em;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(0, 0, 0, .08);
}

.instructor-section-title--flush {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.instructor-greeting__body {
  font-size: 16px;
  color: #424245;
  line-height: 1.85;
  white-space: pre-line;
}

.instructor-greeting__sign {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, .06);
  text-align: right;
}

.instructor-greeting__sign-name {
  font-size: 18px;
  font-weight: 700;
  color: #1d1d1f;
}

.instructor-greeting__sign-role {
  font-size: 14px;
  color: #86868b;
  margin-top: 4px;
}

.instructor-history {
  padding: 40px 40px 36px;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, .06);
  border-radius: 20px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, .04);
}

.instructor-history__head {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(0, 0, 0, .08);
}

.instructor-timeline {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.instructor-timeline__item {
  display: grid;
  grid-template-columns: 88px 32px minmax(0, 1fr);
  column-gap: 20px;
  align-items: stretch;
}

.instructor-timeline__item + .instructor-timeline__item {
  margin-top: 4px;
}

.instructor-timeline__year--missing {
  font-size: 12px;
  font-weight: 600;
  color: #aeaeb2;
}

.instructor-timeline__year--repeat {
  visibility: hidden;
}

.instructor-timeline__year {
  padding-top: 20px;
  font-size: 18px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
  color: #86868b;
  text-align: right;
  line-height: 1.2;
}

.instructor-timeline__item.is-current .instructor-timeline__year {
  color: #1d1d1f;
  font-size: 20px;
}

.instructor-timeline__track {
  position: relative;
  display: flex;
  justify-content: center;
  padding-top: 24px;
}

.instructor-timeline__track::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
  background: #e5e5ea;
}

.instructor-timeline__item:first-child .instructor-timeline__track::before {
  top: 24px;
}

.instructor-timeline__item:last-child .instructor-timeline__track::before {
  height: 24px;
  bottom: auto;
}

.instructor-timeline__dot {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 9px;
  height: 9px;
  margin-top: 0;
  border-radius: 50%;
  background: #fff;
  border: 2px solid #aeaeb2;
  box-shadow: 0 0 0 3px #fff;
}

.instructor-timeline__item.is-current .instructor-timeline__dot {
  width: 11px;
  height: 11px;
  background: var(--timeline-accent);
  border-color: var(--timeline-accent);
  box-shadow: 0 0 0 4px var(--timeline-accent-glow);
}

.instructor-timeline__card {
  margin: 0 0 16px;
  padding: 18px 22px 20px;
  background: #fbfbfd;
  border: 1px solid rgba(0, 0, 0, .06);
  border-radius: 14px;
  transition: border-color .2s ease, box-shadow .2s ease;
}

.instructor-timeline__item.is-current .instructor-timeline__card {
  background: #fff;
  border-color: var(--timeline-accent-border);
  box-shadow: 0 4px 20px var(--timeline-accent-shadow);
}

.instructor-timeline__year-mobile {
  display: none;
}

.instructor-timeline__card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.instructor-timeline__scope {
  flex-shrink: 0;
  padding: 5px 10px;
  border-radius: 999px;
  background: #f5f5f7;
  border: 1px solid rgba(0, 0, 0, .08);
  font-size: 11px;
  font-weight: 700;
  color: #6e6e73;
  letter-spacing: -.01em;
}

.instructor-timeline__item.is-current .instructor-timeline__scope {
  background: rgba(65, 105, 225, .1);
  border-color: rgba(65, 105, 225, .18);
  color: #4169e1;
}

.instructor-timeline__title {
  font-size: 17px;
  font-weight: 700;
  color: #1d1d1f;
  line-height: 1.45;
  margin: 0;
  flex: 1;
  min-width: 0;
}

.instructor-history__footer {
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid rgba(0, 0, 0, .08);
}

.instructor-history__portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 12px;
  background: #1d1d1f;
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  transition: filter .15s ease, transform .15s ease;
}

.instructor-history__portfolio-link:hover {
  filter: brightness(1.08);
}

.instructor-history__portfolio-link:active {
  transform: scale(.98);
}

.instructor-timeline__desc {
  font-size: 15px;
  color: #6e6e73;
  line-height: 1.7;
  margin: 0;
}

.instructor-timeline__achievements {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.instructor-timeline__achievements li {
  margin: 0;
  width: fit-content;
  max-width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 500;
  color: var(--timeline-accent);
  line-height: 1.55;
  background: rgba(65, 105, 225, 0.1);
  border-radius: 7px;
}

.instructor-timeline__achievements li::before {
  content: none;
}

.instructor-timeline__item.is-current .instructor-timeline__achievements li {
  color: var(--timeline-accent);
  background: rgba(65, 105, 225, 0.1);
}

.instructors-empty {
  text-align: center;
  padding: 48px 24px;
  color: #86868b;
  font-size: 16px;
}

@media (max-width: 768px) {
  .instructor-profile {
    flex-direction: column;
    align-items: flex-start;
    padding: 28px 24px;
    gap: 20px;
  }

  .instructor-profile__photo {
    width: 120px;
    height: 150px;
  }

  .instructor-greeting,
  .instructor-history {
    padding: 28px 24px 24px;
  }

  .instructor-timeline__item {
    grid-template-columns: 24px minmax(0, 1fr);
    column-gap: 14px;
  }

  .instructor-timeline__year {
    display: none;
  }

  .instructor-timeline__track {
    padding-top: 22px;
  }

  .instructor-timeline__item:first-child .instructor-timeline__track::before {
    top: 22px;
  }

  .instructor-timeline__year-mobile {
    display: inline-block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    letter-spacing: .04em;
    color: var(--timeline-accent);
  }

  .instructor-timeline__card {
    margin-bottom: 12px;
    padding: 16px 18px 18px;
  }
}