/* Case study pages: layers on top of ../style.css */

.case-page {
  padding: 4.5rem 0 5rem;
}

.case-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.75rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-inset);
  transition: color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.back-link::before {
  content: "\2190";
  color: var(--accent);
  transition: transform 0.15s ease;
}

.back-link:hover {
  color: var(--text);
  border-color: var(--accent);
}

.back-link:hover::before {
  transform: translateX(-3px);
}

/* Header */

.case-header {
  margin-bottom: 3.5rem;
}

.case-header .case-kicker-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.case-header h1 {
  font-size: clamp(2rem, 3.4vw + 1rem, 3rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  margin-bottom: 1.75rem;
}

.tldr {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 1.4rem 1.6rem;
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.65;
}

.tldr strong {
  color: var(--text);
}

.tldr-label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.tldr p {
  margin: 0;
}

/* Headline stats strip */

.case-header-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin-top: 1.75rem;
  background: var(--bg-inset);
}

.case-header-stat {
  padding: 1rem 1.2rem;
  border-right: 1px solid var(--border-soft);
}

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

.case-header-stat .num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}

.case-header-stat .num .accent-2 {
  color: var(--accent-2);
}

.case-header-stat .label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-faint);
  margin-top: 0.15rem;
}

/* Article body */

.case-body h2 {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  font-size: 1.55rem;
  letter-spacing: -0.01em;
  margin: 3.25rem 0 1.25rem;
}

.case-body h2 .cell-ref {
  transform: translateY(-2px);
}

.case-body p {
  color: var(--text-muted);
  font-size: 1.02rem;
}

.case-body strong {
  color: var(--text);
  font-weight: 600;
}

.case-body ul,
.case-body ol {
  color: var(--text-muted);
  padding-left: 1.4rem;
  margin: 0 0 1.25em;
}

.case-body li {
  margin-bottom: 0.6em;
}

.case-body li::marker {
  color: var(--accent);
  font-family: var(--font-mono);
}

.case-body code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--bg-inset);
  border: 1px solid var(--border-soft);
  border-radius: 3px;
  padding: 0.08em 0.35em;
  color: var(--text);
}

/* Results list: each win reads as a highlighted row */

.results-list {
  list-style: none;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-elevated);
}

.results-list li {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin: 0;
  padding: 1.1rem 1.3rem;
  border-bottom: 1px solid var(--border-soft);
  transition: background 0.15s ease;
}

.results-list li:hover {
  background: var(--accent-dim);
}

.results-list li:last-child {
  border-bottom: none;
}

.results-list .tick {
  flex-shrink: 0;
  font-family: var(--font-mono);
  color: var(--accent-2);
  font-weight: 600;
}

/* Pipeline steps (workflow case study) */

.pipeline {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 1.75rem;
  position: relative;
}

.pipeline li {
  position: relative;
  padding: 0 0 1.5rem 2.4rem;
  margin: 0;
}

.pipeline li::before {
  content: "";
  position: absolute;
  left: 0.72rem;
  top: 1.4rem;
  bottom: -0.1rem;
  width: 1px;
  background: var(--border);
}

.pipeline li:last-child::before {
  display: none;
}

.pipeline .step-dot {
  position: absolute;
  left: 0;
  top: 0.2rem;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid var(--border);
  border-radius: 4px;
}

.pipeline .step-title {
  font-weight: 600;
  color: var(--text);
}

/* Tech stack table, styled as spreadsheet rows */

.stack-table {
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  margin: 1.5rem 0 0;
  background: var(--bg-elevated);
}

.stack-table-head {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 0.8rem 1.2rem;
  background: var(--bg-inset);
  border-bottom: 1px solid var(--border-soft);
}

.stack-row {
  display: grid;
  grid-template-columns: 3rem 10rem 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: 0.9rem 1.2rem;
  border-bottom: 1px solid var(--border-soft);
  transition: background 0.15s ease;
}

.stack-row:hover {
  background: var(--accent-dim);
}

.stack-row:last-child {
  border-bottom: none;
}

.stack-row .tool {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
}

.stack-row .role {
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* Dashboard mock (ecommerce demo page) */

.sheet-mock {
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-inset);
  margin: 1.75rem 0;
  font-family: var(--font-mono);
}

.sheet-mock-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.9rem;
  border-bottom: 1px solid var(--border-soft);
  font-size: 0.72rem;
  color: var(--text-faint);
}

.sheet-mock-bar .fx {
  color: var(--accent);
  font-style: italic;
  font-weight: 600;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: var(--border-soft);
}

.kpi-cell {
  background: var(--bg-elevated);
  padding: 1rem 1.1rem;
}

.kpi-cell .kpi-label {
  display: block;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.3rem;
}

.kpi-cell .kpi-value {
  display: block;
  font-size: 1.2rem;
  font-weight: 500;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.kpi-cell .kpi-delta {
  font-size: 0.7rem;
}

.kpi-delta.up { color: var(--accent-2); }
.kpi-delta.down { color: var(--negative); }

.kpi-spark {
  display: block;
  width: 100%;
  height: 26px;
  margin-top: 0.5rem;
}

.kpi-spark polyline {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
}

.sheet-mock-tabs {
  display: flex;
  gap: 1px;
  padding: 0.45rem 0.9rem 0;
  border-top: 1px solid var(--border-soft);
  font-size: 0.68rem;
}

.sheet-mock-tabs span {
  padding: 0.3rem 0.8rem 0.4rem;
  border-radius: 4px 4px 0 0;
  color: var(--text-faint);
  background: var(--bg);
}

.sheet-mock-tabs .tab-active {
  color: var(--accent);
  background: var(--bg-elevated);
}

/* CTA footer */

.case-cta {
  margin-top: 4rem;
  padding: 2rem 2.25rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background:
    radial-gradient(ellipse 420px 220px at 90% 110%, var(--accent-dim), transparent 70%),
    var(--bg-elevated);
}

.case-cta h2 {
  margin: 0 0 0.6rem;
  font-size: 1.4rem;
}

.case-cta p {
  color: var(--text-muted);
  max-width: 48ch;
}

.case-cta .email-fallback {
  margin-top: 0.9rem;
}

@media (max-width: 680px) {
  .case-page {
    padding: 2.5rem 0 3rem;
  }

  .back-link {
    margin-bottom: 2rem;
  }

  .stack-row {
    grid-template-columns: 2.4rem 1fr;
  }

  .stack-row .role {
    grid-column: 2;
  }

  .case-cta {
    padding: 1.5rem;
  }
}