/* ============================================================
   Polinowski Engineering — Case study page styles
   Loaded by case/*.html alongside website.css
   ============================================================ */

/* ── Hero ───────────────────────────────────────────────── */
.cs-hero {
  background: var(--ink-900);
  padding: 64px 0 56px;
  position: relative;
  overflow: hidden;
}
.cs-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: url("../assets/pattern-grid.svg");
  background-size: 60px 60px;
  opacity: 0.35;
  mask-image: radial-gradient(ellipse 80% 100% at 80% 50%, #000 20%, transparent 75%);
}
.cs-hero-inner { position: relative; z-index: 1; }

.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel-400);
  text-decoration: none;
  margin-bottom: 28px;
}
.cs-back:hover { color: var(--paper-soft); }

.cs-eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.cs-eyebrow-label { color: var(--signal-500); }
.cs-eyebrow-rule  { flex: 1; max-width: 48px; height: 1px; background: rgba(255,255,255,0.15); }
.cs-eyebrow-meta  { color: var(--steel-400); text-transform: none; letter-spacing: 0.04em; font-weight: 400; }

.cs-title {
  font-family: var(--font-sans);
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.1;
  color: var(--paper-soft);
  text-wrap: balance;
  max-width: 860px;
  margin: 0 0 28px;
}

.cs-amort-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 14px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--steel-400);
}
.cs-amort-badge strong { color: var(--paper-soft); font-weight: 500; }

/* ── Body grid — full bleed ──────────────────────────────── */
.cs-body { padding: 0; }
.cs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0;
  width: 100vw;
  position: relative;
  left: 50%;
  transform: translateX(-50%);
  max-width: 100%;
}

.cs-panel {
  padding: 48px 56px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-right: 1px solid var(--border-hair);
}
.cs-panel:last-child { border-right: 0; }
.cs-vorher  { background: var(--paper-soft); }
.cs-loesung { background: #FFFFFF; }
.cs-nachher { background: var(--ok-bg); }

.cs-panel-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.14em;
}
.cs-label-err  { color: var(--err); }
.cs-label-mid  { color: var(--fg-3); }
.cs-label-good { color: var(--ok); }

.cs-dot { width: 8px; height: 8px; border-radius: 99px; flex-shrink: 0; }
.cs-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 99px;
  background: rgba(47,143,91,0.15);
  color: var(--ok);
  flex-shrink: 0;
}

.cs-panel-body {
  font-size: 15px;
  line-height: 1.65;
  color: var(--fg-2);
  margin: 0;
}
.cs-panel-body-inv { color: var(--fg-2); }

/* Metrics */
.cs-metrics {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--border-hair);
  margin-top: auto;
}
.cs-metrics-inv { border-top-color: rgba(47,143,91,0.25); }

.metric { display: flex; flex-direction: column; gap: 3px; }
.metric-val {
  font-family: var(--font-sans);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--ink-900);
  line-height: 1.05;
}
.metric-val-inv { color: var(--ok) !important; }
.metric-lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fg-3);
}
.cs-metrics-inv .metric-lbl { color: var(--ok); opacity: 0.7; }

/* ── CTA bar ────────────────────────────────────────────── */
.cs-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cs-cta-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel-400);
  margin-bottom: 12px;
}

/* ── More section ───────────────────────────────────────── */
.cs-more { padding: 48px 0 64px; background: var(--bg-canvas); }
.cs-more .pe-eyebrow-row { margin-bottom: 20px; }
.cs-all-link {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1px solid var(--border-hair);
  padding-bottom: 2px;
}
.cs-all-link:hover { border-bottom-color: var(--signal-600); color: var(--signal-700); }

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 1024px) {
  .cs-grid { grid-template-columns: 1fr; }
  .cs-cta-inner { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 720px) {
  .cs-hero { padding: 48px 0 40px; }
  .cs-panel { padding: 28px 20px; }
}