/* ============================================================
   VCC, Use Cases section
   Live deployments as case study cards
   ============================================================ */

.usecases {
  position: relative;
  padding-block: clamp(48px, 6vw, 88px);
  overflow: hidden;
  background: rgba(46, 63, 50, 0.12);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.usecases::before {
  content: "";
  position: absolute;
  bottom: -20%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(116, 219, 139, 0.05) 0%, transparent 65%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.usecases__head {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
  margin: 0 auto var(--space-5);
}

.usecases__head .eyebrow { margin-bottom: var(--space-4); }

.usecases__head h2 {
  font-size: var(--fs-primary);
  font-weight: var(--fw-light);
  line-height: var(--lh-heading);
  letter-spacing: var(--ls-heading);
  margin-bottom: var(--space-4);
  max-width: 32ch;
  margin-inline: auto;
  text-wrap: balance;
}

.usecases__head h2 .accent { color: var(--accent); font-weight: var(--fw-bold); }

.usecases__head .lead { margin-inline: auto; max-width: 56ch; }

/* ---------- Tab navigation ---------- */

.usecases__tabs {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  gap: 4px;
  max-width: var(--max-w);
  margin: 0 auto var(--space-5);
  padding: 4px;
  background: rgba(46, 63, 50, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  width: fit-content;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.usecases__tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background: transparent;
  border: none;
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out);
}

.usecases__tab:hover {
  color: var(--text-primary);
}

.usecases__tab.is-active {
  background: rgba(116, 219, 139, 0.12);
  color: var(--accent);
}

.usecases__tab-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.6;
  transition: box-shadow var(--dur-fast) var(--ease-out);
}

.usecases__tab.is-active .usecases__tab-dot {
  opacity: 1;
  box-shadow: 0 0 8px currentColor;
}

.usecases__tab[data-tab="pilot"] { --tab-color: #E8A840; }
.usecases__tab[data-tab="trial"] { --tab-color: var(--ew-purple-200); }

.usecases__tab[data-tab="pilot"].is-active { background: rgba(232, 168, 64, 0.12); color: #E8A840; }
.usecases__tab[data-tab="trial"].is-active { background: rgba(203, 190, 203, 0.12); color: var(--ew-purple-200); }

@media (max-width: 640px) {
  .usecases__tab { padding: 8px 14px; font-size: 11px; }
}

/* ---------- Panels ---------- */

.usecases__panel {
  display: none;
  animation: uc-fade-in var(--dur-slow) var(--ease-out);
}

.usecases__panel.is-active {
  display: block;
}

@keyframes uc-fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

.usecases__group {
  position: relative;
  z-index: 1;
  max-width: var(--max-w);
  margin-inline: auto;
}

.usecases__group-meta {
  text-align: center;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  color: var(--text-dim);
  letter-spacing: var(--ls-mono);
  margin-bottom: var(--space-4);
}

.usecases__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.usecases__grid--two { grid-template-columns: repeat(2, 1fr); max-width: 780px; margin-inline: auto; }
.usecases__grid--one { grid-template-columns: 1fr; max-width: 460px; margin-inline: auto; }

@media (max-width: 960px) {
  .usecases__grid,
  .usecases__grid--two,
  .usecases__grid--one { grid-template-columns: 1fr; gap: var(--space-4); max-width: 100%; }
}

.usecases__card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: rgba(20, 28, 23, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: border-color var(--dur-base) var(--ease-out),
              transform var(--dur-base) var(--ease-out);
}

.usecases__card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

/* Static variant: informational card only, no click affordance */
.usecases__card--static { cursor: default; }
.usecases__card--static:hover {
  border-color: var(--border);
  transform: none;
}

/* Visual area, top */
.usecases__card-visual {
  position: relative;
  height: 150px;
  padding: 14px 16px;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.usecases__card-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, transparent 0%, rgba(20, 28, 23, 0.4) 100%);
  pointer-events: none;
}

.usecases__card-visual-svg {
  width: 100%;
  height: 100%;
  display: block;
}

.usecases__card-body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.usecases__card-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-3);
}

.usecases__card-tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 8px currentColor;
}

.usecases__card-title {
  font-size: 1.5rem;
  font-weight: var(--fw-light);
  letter-spacing: -0.01em;
  line-height: 1.2;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.usecases__card-body-text {
  font-size: var(--fs-body);
  line-height: 1.5;
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
  flex: 1;
}

.usecases__card-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--border);
  margin-bottom: var(--space-4);
}

.usecases__card-metric dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 2px;
}

.usecases__card-metric dd {
  font-family: var(--font-brand);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.usecases__card-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  align-self: flex-start;
}

.usecases__card-link svg {
  transition: transform var(--dur-fast) var(--ease-out);
}

.usecases__card:hover .usecases__card-link svg {
  transform: translateX(3px);
}