/* =================================================================
   case study page — extends styles.css
   ================================================================= */

.case { padding-bottom: 80px; }

/* ---- hero ---- */
.case-hero {
  padding: 96px 0 64px;
  border-bottom: 1px solid var(--border);
}
.case-meta {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 12px;
  color: var(--text-dim);
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.case-tag {
  --accent: var(--c-indigo);
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(139,128,255,.12);
  border: 1px solid var(--accent);
  color: var(--accent);
  letter-spacing: .1em;
  text-transform: uppercase;
  font-size: 11px;
}
.case-title {
  font-family: var(--display);
  font-size: clamp(64px, 9vw, 120px);
  line-height: .94;
  letter-spacing: -.03em;
  margin: 0 0 20px;
  font-weight: 400;
}
.case-title em {
  font-style: italic;
  background: linear-gradient(120deg, var(--c-indigo) 0%, var(--c-coral) 60%, var(--c-amber) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}
.case-sub {
  font-size: 22px;
  font-family: var(--display);
  font-style: italic;
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 0 48px;
  line-height: 1.4;
}

.case-stats {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}
.case-stats > div {
  background: var(--panel);
  padding: 18px 14px;
  display: flex; flex-direction: column; gap: 4px;
}
.case-stat-num {
  font-family: var(--display);
  font-size: 32px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--text);
}
.case-stat-lab {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: .1em;
}

/* ---- sections ---- */
.case-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--border);
}
.container.narrow { max-width: 820px; }

.case-h-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-soft);
  letter-spacing: .14em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}
.case-h {
  font-family: var(--display);
  font-size: clamp(32px, 4vw, 44px);
  font-weight: 400;
  letter-spacing: -.02em;
  margin: 0 0 28px;
  color: var(--text);
}
.case-sh {
  font-family: var(--display);
  font-size: 24px;
  font-weight: 400;
  margin: 36px 0 14px;
  color: var(--text);
  letter-spacing: -.01em;
}
.case-sub-small {
  color: var(--text-dim);
  font-size: 15px;
  margin: 8px 0 0;
  max-width: 720px;
}

.case-section p {
  color: var(--text-dim);
  font-size: 17px;
  line-height: 1.7;
  margin: 0 0 18px;
  max-width: 720px;
}
.case-section p strong { color: var(--text); font-weight: 600; }
.case-section p em     { font-family: var(--display); color: var(--text); font-style: italic; font-size: 19px; }

.case-list {
  margin: 0 0 20px;
  padding-left: 22px;
  list-style: none;
}
.case-list li {
  position: relative;
  padding: 6px 0;
  color: var(--text-dim);
  font-size: 16px;
}
.case-list li::before {
  content: '▸';
  position: absolute; left: -22px; top: 6px;
  color: var(--c-indigo);
  font-family: var(--mono);
}
.case-list li strong { color: var(--text); }

.case-aside {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text-soft);
  margin: 18px 0 36px;
}
.case-aside a {
  color: var(--c-indigo);
  border-bottom: 1px dashed transparent;
  transition: border-color .2s ease;
}
.case-aside a:hover { border-bottom-color: var(--c-indigo); }

.case-quote {
  margin: 36px 0 0;
  padding: 22px 28px;
  border-left: 3px solid var(--c-indigo);
  background: var(--panel);
  font-family: var(--display);
  font-style: italic;
  font-size: 21px;
  color: var(--text);
  line-height: 1.5;
  border-radius: 0 12px 12px 0;
}

/* ---- chart ---- */
.chart-section { padding: 60px 0 80px; }
.chart-head { margin-bottom: 28px; }
.chart-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px 24px 14px;
  margin-top: 8px;
  overflow: hidden;
}
.chart {
  width: 100%;
  height: 320px;
  display: block;
}
.chart-line-u3, .chart-line-u6 {
  stroke-dasharray: 4000;
  stroke-dashoffset: 4000;
  animation: chart-draw 2.4s cubic-bezier(.22,1,.36,1) forwards;
}
.chart-line-u6 { animation-delay: .3s; }
@keyframes chart-draw {
  to { stroke-dashoffset: 0; }
}

.chart-legend {
  display: flex; gap: 18px; flex-wrap: wrap;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
  font-family: var(--mono); font-size: 12px;
  color: var(--text-dim);
}
.chart-legend i {
  display: inline-block;
  width: 12px; height: 2.4px;
  vertical-align: middle;
  margin-right: 6px;
  border-radius: 1px;
}
.chart-caption {
  font-size: 14px !important;
  color: var(--text-soft) !important;
  margin-top: 16px !important;
  font-style: italic;
}

/* ---- findings ---- */
.findings-table {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  margin: 16px 0 8px;
}
.findings-table table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 13px;
}
.findings-table th, .findings-table td {
  padding: 12px 18px;
  text-align: left;
}
.findings-table th {
  background: var(--panel-2);
  color: var(--text-soft);
  font-weight: 500;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .1em;
  border-bottom: 1px solid var(--border);
}
.findings-table td { color: var(--text); border-bottom: 1px solid var(--border); }
.findings-table tr:last-child td { border-bottom: 0; }
.findings-table td:nth-child(2) { color: var(--c-coral); font-weight: 500; }
.findings-table td:nth-child(3) { color: var(--text-soft); }

/* ---- indicator cards ---- */
.indicators {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin: 24px 0;
}
.ind-card {
  --accent: var(--c-indigo);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px 22px;
  position: relative;
  display: flex; flex-direction: column; gap: 6px;
}
.ind-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 3px; height: 100%;
  background: var(--accent);
  border-radius: 12px 0 0 12px;
}
.ind-label {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: .1em;
}
.ind-value {
  font-family: var(--display);
  font-size: 38px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--text);
}
.ind-note {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.5;
}
.ind-status {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--accent);
  letter-spacing: .14em;
  text-transform: uppercase;
  margin-top: 4px;
}

/* ---- code ---- */
.case-code {
  background: #07050f;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px 22px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--text);
  line-height: 1.65;
  overflow-x: auto;
  margin: 14px 0 28px;
}

/* ---- series grid ---- */
.series-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
  margin-top: 16px;
}
.series-grid > div {
  padding: 10px 14px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--text-dim);
}
.series-grid code {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--c-amber);
  background: transparent;
}

/* ---- CTA links ---- */
.case-cta { padding: 88px 0; border-bottom: 0; }
.case-cta-h {
  font-family: var(--display);
  font-size: 44px;
  font-weight: 400;
  letter-spacing: -.02em;
  margin: 0 0 32px;
  color: var(--text);
}
.case-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.case-link {
  --accent: var(--c-indigo);
  position: relative;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 26px;
  display: flex; flex-direction: column; gap: 6px;
  transition: all .25s ease;
}
.case-link:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -16px rgba(0,0,0,.6);
}
.cl-k {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: .14em;
}
.cl-v {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text);
  word-break: break-all;
}
.cl-arrow {
  position: absolute;
  top: 22px; right: 26px;
  font-family: var(--mono);
  color: var(--text-soft);
  transition: transform .25s cubic-bezier(.34,1.56,.64,1), color .25s ease;
}
.case-link:hover .cl-arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}

/* ---- responsive ---- */
@media (max-width: 900px) {
  .case-stats { grid-template-columns: repeat(3, 1fr); }
  .indicators { grid-template-columns: 1fr; }
  .case-links { grid-template-columns: 1fr; }
  .series-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .case-stats { grid-template-columns: repeat(2, 1fr); }
  .chart-wrap { padding: 14px 14px 10px; overflow-x: auto; }
  .chart { min-width: 720px; }
}