/* ===== Field Work — Issue No. 03 ===== */

/* ── Desktop ── */
.page-portfolio {
  padding: 40px 48px 48px;
}

.portfolio-intro {
  margin-top: 48px;
}

.portfolio-headline {
  font-family: var(--serif);
  font-size: 96px;
  line-height: 0.9;
  letter-spacing: -0.035em;
  font-weight: 400;
  margin: 18px 0 12px;
  color: var(--ink);
  max-width: 1100px;
}

.case-list {
  margin-top: 48px;
}

.case-row {
  display: grid;
  grid-template-columns: 100px 1fr 200px 60px;
  gap: 32px;
  padding: 36px 0;
  border-top: 1.5px solid var(--ink);
  border-left: none;
  border-right: none;
  border-bottom: none;
  align-items: center;
  background: transparent;
  color: var(--ink);
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: background 0.3s, color 0.3s;
}

.case-row.last {
  border-bottom: 1.5px solid var(--ink);
}

.case-row:hover {
  background: var(--ink);
  color: var(--yellow);
}

.case-row-no {
  font-family: var(--serif);
  font-size: 56px;
  font-weight: 300;
  font-style: italic;
  letter-spacing: -0.02em;
}

.case-row-kicker {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.65;
}

.case-row-title {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-top: 8px;
}

.case-row-dek {
  font-size: 13px;
  line-height: 1.5;
  opacity: 0.85;
}

.case-row-arrow {
  font-size: 28px;
  text-align: right;
  transition: transform 0.3s;
}

.case-row:hover .case-row-arrow {
  transform: translateX(8px);
}

/* Case study detail (desktop) */
.case-study {
  padding-top: 40px;
}

.back-btn {
  background: transparent;
  border: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
  cursor: pointer;
  padding: 8px 0;
  margin-bottom: 20px;
  display: block;
}

.back-btn:hover {
  opacity: 0.7;
}

.case-headline {
  font-family: var(--serif);
  font-size: 64px;
  line-height: 0.98;
  letter-spacing: -0.03em;
  font-weight: 400;
  margin: 18px 0 24px;
  color: var(--ink);
  max-width: 1100px;
}

.case-no {
  font-weight: 400;
  color: var(--muted);
}

.case-dek {
  font-family: var(--serif);
  font-size: 22px;
  line-height: 1.45;
  font-weight: 300;
  color: var(--ink);
  max-width: 820px;
  margin-bottom: 40px;
}

.case-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1.5px solid var(--ink);
  border-bottom: 1.5px solid var(--ink);
}

.case-metric {
  padding: 22px 20px;
  border-right: 1px solid rgba(0, 0, 0, 0.15);
}

.case-metric:last-child {
  border-right: none;
}

.metric-big {
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1;
}

.metric-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 10px;
}

.case-body {
  margin-top: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.case-body-text p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  margin-bottom: 18px;
}

.drop-cap {
  font-family: var(--serif);
  font-size: 54px;
  line-height: 0.9;
  float: left;
  margin-right: 10px;
  margin-top: 6px;
  font-weight: 500;
}

.case-pullquote {
  font-family: var(--serif);
  font-size: 36px;
  line-height: 1.2;
  font-style: italic;
  font-weight: 300;
  color: var(--ink);
  letter-spacing: -0.02em;
  border-left: 3px solid var(--yellow);
  padding-left: 24px;
}


/* ── Mobile ── */
@media (max-width: 767px) {

  .page-portfolio {
    padding: 0 16px 8px;
    position: relative;
    overflow-x: clip;
  }

  .portfolio-intro { margin-top: 18px; }

  .portfolio-headline {
    font-size: 38px;
    line-height: 0.92;
    letter-spacing: -0.035em;
    margin: 12px 0 6px;
    max-width: none;
    text-wrap: pretty;
  }

  .case-list { margin-top: 22px; }

  .case-row {
    grid-template-columns: 40px 1fr 18px;
    column-gap: 12px;
    gap: 0;
    padding: 16px 0;
    align-items: start;
    transition: background 200ms ease, color 200ms ease;
  }

  .case-row:hover {
    background: transparent;
    color: var(--ink);
  }

  .case-row:active { background: var(--ink); color: var(--yellow); }

  .case-row-no {
    font-size: 30px;
    line-height: 1;
    padding-top: 4px;
  }

  .case-row-kicker {
    font-size: 8.5px;
    letter-spacing: 0.2em;
  }

  .case-row-title {
    font-size: 18px;
    letter-spacing: -0.015em;
    line-height: 1.15;
    margin-top: 6px;
  }

  .case-row-dek {
    font-size: 12px;
    margin-top: 8px;
    grid-column: 2 / span 2;
  }

  .case-row-arrow {
    font-size: 18px;
    padding-top: 6px;
    transition: transform 200ms ease;
  }

  .case-row:active .case-row-arrow { transform: translateX(4px); }

  /* Case study detail (mobile: push from right) */
  .case-study {
    position: relative;
    background: var(--paper);
    padding: 0 16px 8px;
    transform: translateX(100%);
    transition: transform 320ms cubic-bezier(0.2, 0.8, 0.2, 1);
    z-index: 5;
  }

  .case-study.open { transform: translateX(0); }

  .back-btn {
    font-size: 10px;
    padding: 14px 0 8px;
    margin-bottom: 0;
    display: inline-flex;
    align-items: center;
    gap: 8px;
  }

  .back-btn:active { opacity: 0.6; }

  .case-headline {
    font-size: 30px;
    line-height: 1.0;
    letter-spacing: -0.025em;
    margin: 12px 0 16px;
    max-width: none;
  }

  .case-dek {
    font-size: 15px;
    line-height: 1.45;
    font-style: italic;
    max-width: none;
    margin-bottom: 22px;
  }

  .case-metrics {
    grid-template-columns: repeat(2, 1fr);
  }

  .case-metric {
    padding: 14px 12px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.15);
  }

  .case-metric:nth-child(2n) { border-right: none; }
  .case-metric:nth-last-child(-n+2) { border-bottom: none; }

  .metric-big {
    font-size: 20px;
  }

  .metric-label {
    font-size: 8.5px;
    letter-spacing: 0.18em;
    margin-top: 8px;
  }

  .case-body {
    margin-top: 24px;
    display: block;
    padding-bottom: 16px;
  }

  .case-body-text p {
    font-size: 13.5px;
    margin-bottom: 14px;
  }

  .drop-cap {
    font-size: 42px;
    margin: 4px 8px 0 0;
  }

  .case-body-pull { margin-top: 16px; }

  .case-pullquote {
    font-size: 22px;
    line-height: 1.2;
    letter-spacing: -0.01em;
    padding-left: 16px;
  }

  .case-body .pill-btn { margin-top: 12px; }

}