/* Burst Guardian use-case pages */

.use-hero {
  position: relative;
  display: grid;
  min-height: min(54rem, 100svh);
  align-items: center;
  padding-top: calc(var(--header-height) + clamp(4rem, 8vh, 7rem));
  padding-bottom: clamp(5rem, 10vh, 8rem);
}

.use-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(24rem, 0.95fr);
  align-items: center;
  gap: clamp(3rem, 7vw, 7rem);
}

.use-hero-copy h1 {
  max-width: 13ch;
  margin-top: var(--space-4);
  font-size: var(--text-hero);
  line-height: var(--leading-hero);
}

.use-hero-copy .text-lead {
  margin-top: var(--space-7, 1.75rem);
}

.use-hero-copy .cluster {
  margin-top: var(--space-8);
}

.use-status {
  margin-top: var(--space-3);
}

.section-heading {
  gap: var(--space-3);
}

.use-visual {
  position: relative;
  min-height: clamp(29rem, 46vw, 37rem);
  overflow: hidden;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 50% 44%, color-mix(in srgb, var(--use-color, var(--blue-500)) 20%, transparent), transparent 34%),
    linear-gradient(145deg, var(--surface-2), var(--surface-ghost));
  box-shadow: var(--shadow-card);
}

.use-visual::before {
  position: absolute;
  inset: 0;
  content: "";
  background-image:
    linear-gradient(var(--surface-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--surface-grid) 1px, transparent 1px);
  background-size: 3.25rem 3.25rem;
  mask-image: linear-gradient(to bottom, var(--black), transparent 92%);
}

.use-visual:has(> .use-visual-image) {
  min-height: 0;
  aspect-ratio: 1672 / 941;
}

.use-visual-image {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.use-visual-inner {
  position: absolute;
  inset: clamp(1.25rem, 4vw, 3rem);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: var(--space-6);
}

.use-visual-header,
.use-visual-footer {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-3);
}

.use-decision {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
}

.use-decision-core {
  position: relative;
  display: grid;
  width: clamp(12rem, 22vw, 16rem);
  aspect-ratio: 1;
  place-content: center;
  gap: var(--space-3);
  border: 1px solid color-mix(in srgb, var(--use-color, var(--blue-500)) 55%, white 5%);
  border-radius: 50%;
  text-align: center;
  background: var(--panel-use);
  box-shadow: var(--shadow-use-core);
}

.use-decision-core::before,
.use-decision-core::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 158%;
  height: 1px;
  content: "";
  background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--use-color, var(--blue-500)) 50%, transparent), transparent);
  transform: translate(-50%, -50%);
}

.use-decision-core::after {
  width: 1px;
  height: 158%;
  background: linear-gradient(transparent, color-mix(in srgb, var(--use-color, var(--blue-500)) 42%, transparent), transparent);
}

.use-decision-core small,
.use-decision-core strong,
.use-decision-core span {
  position: relative;
  z-index: 1;
}

.use-decision-core small {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.13em;
  color: var(--text-3);
}

.use-decision-core strong {
  font-size: var(--text-2xl);
}

.use-decision-core span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--green-300);
}

.use-request {
  position: absolute;
  z-index: 3;
  padding: 0.48rem 0.65rem;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--text-micro);
  color: var(--text-2);
  background: var(--panel-label);
}

.use-request:nth-child(2) { top: 12%; left: 2%; }
.use-request:nth-child(3) { top: 43%; left: 0; }
.use-request:nth-child(4) { bottom: 12%; left: 6%; }
.use-request:nth-child(5) { top: 18%; right: 2%; color: var(--green-300); }
.use-request:nth-child(6) { bottom: 18%; right: 2%; color: var(--green-300); }

.ticket-use { --use-color: var(--blue-500); }
.game-use { --use-color: var(--violet-500); }
.public-use { --use-color: var(--green-500); }
.commerce-use { --use-color: var(--orange-500); }
.payway-use { --use-color: var(--cyan-400); }
.others-use { --use-color: var(--slate-300); }

.ticket-visual-image {
  position: absolute;
  right: -7%;
  bottom: -10%;
  width: 92%;
  filter: var(--shadow-image-blue-wide);
}

.ticket-visual .use-decision {
  display: none;
}

.ticket-visual .use-visual-footer {
  z-index: 3;
  align-self: end;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-sm);
  background: var(--panel-deep-soft);
  backdrop-filter: blur(10px);
}

.problem-grid,
.outcome-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-5);
}

.problem-card,
.outcome-card {
  display: grid;
  min-height: auto;
  align-content: start;
  gap: var(--space-6);
}

.problem-card span,
.outcome-card span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-3);
}

.problem-card h3,
.outcome-card h3 {
  font-size: var(--text-xl);
}

.state-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: stretch;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.state-node {
  position: relative;
  display: grid;
  min-height: auto;
  align-content: start;
  gap: var(--space-6);
  padding: clamp(1.4rem, 3vw, 2.3rem);
  border-right: 1px solid var(--line-1);
  background: var(--surface-faint);
}

.state-node:last-child { border-right: 0; }

.state-node::after {
  position: absolute;
  top: 50%;
  right: -0.55rem;
  z-index: 2;
  width: 1.1rem;
  height: 1.1rem;
  border: 1px solid var(--line-2);
  border-radius: 50%;
  content: "";
  background: var(--bg-0);
  transform: translateY(-50%);
}

.state-node:last-child::after { display: none; }

.state-node small {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--text-3);
}

.state-node strong {
  font-size: var(--text-xl);
}

.state-node.is-engine {
  background: color-mix(in srgb, var(--use-color, var(--blue-500)) 7%, var(--bg-1));
}

.boundary-table {
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-xl);
}

.boundary-column {
  padding: clamp(1.6rem, 4vw, 3rem);
}

.boundary-column + .boundary-column {
  border-left: 1px solid var(--line-1);
  background: color-mix(in srgb, var(--use-color, var(--blue-500)) 5%, var(--bg-1));
}

.boundary-column > span {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--text-3);
}

.boundary-column h3 {
  margin-top: var(--space-4);
}

.boundary-column ul {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.boundary-column li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-3);
}

.boundary-column li::before {
  width: 0.4rem;
  height: 0.4rem;
  flex: 0 0 auto;
  margin-top: 0.58rem;
  border-radius: 50%;
  content: "";
  background: var(--use-color, var(--blue-500));
}

.use-disclaimer {
  margin-top: var(--space-8);
  padding: 1rem 1.1rem;
  border-left: 2px solid var(--orange-400);
  font-size: var(--text-sm);
  color: var(--text-3);
  background: var(--orange-a035);
}

.related-use-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-4);
}

.related-use-list a {
  display: flex;
  min-height: 6rem;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--line-1);
  border-radius: var(--radius-md);
  background: var(--surface-faint-strong);
  transition: transform var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-standard);
}

.related-use-list a:hover {
  border-color: var(--line-blue);
  transform: translateY(-3px);
}

.uses-overview-hero {
  min-height: 74svh;
}

.uses-overview-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-5);
}

.uses-overview-card {
  display: grid;
  min-height: 19rem;
  align-content: space-between;
  gap: var(--space-8);
}

.uses-overview-card header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
}

.uses-overview-card h2 {
  margin-top: var(--space-3);
  font-size: var(--text-2xl);
}

.uses-overview-card b {
  font-weight: 400;
  color: var(--text-3);
}

.use-cta {
  border-block: 1px solid var(--line-1);
  background: color-mix(in srgb, var(--use-color, var(--blue-500)) 5%, var(--bg-1));
}

.use-cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: end;
  gap: var(--space-8);
}

.use-cta h2 {
  max-width: 16ch;
  margin-top: var(--space-3);
}

@media (max-width: 72rem) {
  .use-hero-grid {
    grid-template-columns: 1fr;
  }

  .use-visual {
    max-width: 46rem;
    width: 100%;
    margin-inline: auto;
  }

  .problem-grid,
  .outcome-grid,
  .related-use-list {
    grid-template-columns: 1fr;
  }

  .problem-card,
  .outcome-card {
    min-height: auto;
  }
}

@media (max-width: 52rem) {
  .use-hero {
    align-items: start;
    padding-top: calc(var(--header-height) + 4rem);
  }

  .use-hero-copy h1 {
    max-width: 12ch;
    font-size: var(--text-hero);
  }

  .use-visual {
    min-height: 28rem;
  }

  .use-visual:has(> .use-visual-image) {
    min-height: 0;
  }

  .use-request:nth-child(3),
  .use-request:nth-child(4) {
    display: none;
  }

  .state-flow,
  .boundary-table,
  .uses-overview-grid {
    grid-template-columns: 1fr;
  }

  .state-node {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line-1);
  }

  .state-node:last-child { border-bottom: 0; }
  .state-node::after { display: none; }

  .boundary-column + .boundary-column {
    border-top: 1px solid var(--line-1);
    border-left: 0;
  }

  .use-cta-inner {
    grid-template-columns: 1fr;
    align-items: start;
  }
}