/* ========================================================================== 
   SECTIONS
   Full-width visual chapters with constrained inner content.
   ========================================================================== */

section{
  padding: 128px 0;
  border-bottom: 1px solid var(--line);
}

section:last-of-type{
  border-bottom: none;
}

.section-light{
  background: var(--paper);
  color: var(--ink-on-light);
  --ink: var(--ink-on-light);
  --ink-dim: var(--ink-dim-on-light);
  --line: var(--line-on-light);
  --silver: var(--silver-on-light);
  --ember: var(--ember-on-light);
}

.section-dark{
  background: var(--bg-indigo);
  color: var(--ink);
}

.section-head{
  max-width: 700px;
  margin-bottom: 66px;
}

.section-head h2{
  font-size: clamp(2.6rem, 4vw, 3.15rem);
  margin-top: 12px;
}

.lede{
  font-size: 1.1rem;
  color: var(--ink-dim);
  max-width: 58ch;
}

/* ---------- Welcome ---------- */
.welcome-grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 72px;
  align-items: center;
}

.welcome-photo{
  width: 100%;
  aspect-ratio: 4/5;
  background: linear-gradient(160deg, var(--bg-indigo-2), var(--violet));
  border: 1px solid var(--line);
  overflow: hidden;
}

.welcome-photo img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.welcome p{
  font-size: clamp(1.05rem, 1.3vw, 1.15rem);
  max-width: 58ch;
  color: var(--ink-dim);
  line-height: 1.75;
}

.welcome p + p{ margin-top: 20px; }

/* ---------- Curriculum ---------- */
.curriculum-list{
  display: grid;
  gap: 0;
}

.curriculum-row{
  display: grid;
  grid-template-columns: 200px minmax(0, 1fr);
  gap: 48px;
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.curriculum-list .curriculum-row:last-child{
  border-bottom: 1px solid var(--line);
}

.curriculum-date{
  font-size: 0.76rem;
  letter-spacing: 0.10em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 600;
}

.curriculum-instructor{
  margin-top: 10px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1rem;
  color: var(--ink-dim);
}

.curriculum-body h3{
  font-size: clamp(1.55rem, 2.2vw, 1.82rem);
  font-weight: 500;
  color: var(--ink);
  max-width: 26ch;
}

.curriculum-body p,
.curriculum-body ul{
  color: var(--ink-dim);
  font-size: 1.04rem;
  line-height: 1.72;
  max-width: 58ch;
}

.curriculum-body p{
  margin-top: 16px;
}

.curriculum-body ul{
  margin-top: 16px;
  margin-left: 20px;
}

.curriculum-body li + li{
  margin-top: 6px;
}

.curriculum-body p + p{ margin-top: 14px; }

.program-details{
  margin-top: 72px;
  padding: 32px 0 34px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 110px;
}

.program-details > .eyebrow{
  margin-bottom: 28px;
}

.program-details-grid{
  display: grid;
  grid-template-columns: 0.9fr 1.35fr 1.25fr;
  gap: 0;
}

.program-detail{
  min-width: 0;
  padding-right: 34px;
}

.program-detail + .program-detail{
  padding-left: 34px;
  border-left: 1px solid var(--line);
}

.program-detail strong{
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 2.7vw, 2.25rem);
  line-height: 1.12;
  font-weight: 500;
  color: var(--ink);
}

.program-detail-label{
  display: block;
  margin-top: 10px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--silver);
}

/* ---------- Faculty ---------- */
.faculty-list{
  display: grid;
  gap: 0;
}

.faculty-row{
  display: grid;
  grid-template-columns: 184px minmax(0, 1fr);
  gap: 48px;
  padding: 48px 0;
  border-top: 1px solid var(--line);
  align-items: start;
}

.faculty-list .faculty-row:last-child{
  border-bottom: 1px solid var(--line);
}

.faculty-photo{
  width: 100%;
  aspect-ratio: 4/5;
  background: linear-gradient(160deg, var(--bg-indigo-2), var(--violet));
  border: 1px solid var(--line);
  overflow: hidden;
}

.faculty-photo img{
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.faculty-row h3{
  font-size: clamp(1.55rem, 2.2vw, 1.85rem);
  font-weight: 500;
  color: var(--ink);
}

.faculty-role{
  margin-top: 9px !important;
  font-size: 0.76rem !important;
  line-height: 1.5 !important;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--silver) !important;
  max-width: 65ch !important;
}

.faculty-copy{
  max-width: 760px;
}

.faculty-row p{
  margin-top: 16px;
  color: var(--ink-dim);
  font-size: 1.03rem;
  line-height: 1.72;
  max-width: 72ch;
}

/* ---------- Registration ---------- */
.register-section{
  position: relative;
  overflow: hidden;
  padding: 132px 0 136px;
}

.register-section::before{
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 1px;
  background: var(--ember);
}

.register-shell{
  max-width: 760px;
}

.register-section .eyebrow{
  color: var(--ember);
}

.register-section h2{
  margin-top: 16px;
  font-size: clamp(2.55rem, 4.5vw, 3.55rem);
  line-height: 1.04;
  max-width: 16ch;
}

.register-lede{
  margin-top: 26px;
  color: var(--ink-dim);
  font-family: var(--font-display);
  font-size: clamp(1.12rem, 1.8vw, 1.34rem);
  line-height: 1.5;
  max-width: 48ch;
}

.register-note{
  margin-top: 14px;
  color: var(--ink-dim);
  font-size: 0.94rem;
  letter-spacing: 0.02em;
}

.register-actions{
  margin-top: 38px;
}

.button-primary{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border: 1px solid var(--ember);
  background: var(--ember);
  color: var(--bg-deep);
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.button-primary:hover,
.button-primary:focus-visible{
  transform: translateY(-1px);
  background: transparent;
  color: var(--ember);
}

.register-contact{
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.register-contact > span{
  color: var(--silver);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.button-secondary{
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.94rem;
  border-bottom: 1px solid rgba(183,189,216,0.42);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.button-secondary:hover,
.button-secondary:focus-visible{
  color: var(--ink);
  border-bottom-color: var(--ink);
}

/* ---------- Footer ---------- */
footer{
  padding-top: 44px;
  padding-bottom: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--ink-dim);
}

/* ---------- Responsive ---------- */
@media (max-width: 860px){
  section{
    padding: 92px 0;
  }

  .section-head{
    margin-bottom: 48px;
  }

  .welcome-grid{
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .welcome-photo{
    order: -1;
    max-width: 340px;
  }

  .curriculum-row{
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 38px 0;
  }

  .curriculum-instructor{
    margin-top: 4px;
  }

  .faculty-row{
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 30px;
    padding: 38px 0;
  }

  .program-details{
    margin-top: 60px;
    padding: 30px 0 32px;
  }

  .register-section{
    padding: 108px 0;
  }
}

@media (max-width: 620px){
  .program-details{
    padding: 28px 0 8px;
  }

  .program-details > .eyebrow{
    margin-bottom: 12px;
  }

  .program-details-grid{
    grid-template-columns: 1fr;
  }

  .program-detail{
    padding: 22px 0;
  }

  .program-detail + .program-detail{
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .faculty-row{
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .faculty-photo{
    max-width: 180px;
  }

  .register-contact{
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  footer{
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}