/* ============================================================
   BrainerX Labs — Solution subpages (generated by
   scripts/build_solutions.py; shared across all six pages)
   ============================================================ */

/* hero */

.sp-hero { padding-bottom: 40px; }

.sp-title { font-size: clamp(40px, 5.6vw, 68px); }

.sp-highlights {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  max-width: 980px;
  margin: 64px auto 0;
}

.sp-highlight {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 26px 22px 20px;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.35;
  text-align: left;
  box-shadow: var(--shadow-sm);
}

.sp-hl-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 10px;
}

/* hero demo showcase */

.demo-shell {
  margin-top: 64px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 16px;
  box-shadow: var(--shadow-sm);
}

.demo-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 16px;
}

.demo-tab {
  position: relative;
  font-family: var(--font-display);
  font-size: 16.5px;
  font-weight: 600;
  letter-spacing: -0.015em;
  line-height: 1.35;
  text-align: center;
  color: var(--muted);
  background: #FBFBFA;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 22px 24px;
  transition: color 0.16s ease, background 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}

.demo-tab:hover { color: var(--ink); border-color: var(--faint); }

.demo-tab.active {
  color: var(--ink);
  background: #fff;
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 12px 28px -14px rgba(59, 79, 255, 0.3);
}

.demo-tab.active::before {
  content: "";
  position: absolute;
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 84px;
  height: 4px;
  border-radius: 3px;
  background: var(--ink);
}

.demo-stage {
  display: none;
  position: relative;
  min-height: 620px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border-soft);
  background:
    radial-gradient(40% 50% at 82% 20%, rgba(59, 79, 255, 0.05), transparent 70%),
    radial-gradient(circle, var(--border-soft) 1px, transparent 1px),
    linear-gradient(180deg, #FDFDFC, #F7F6F2);
  background-size: 100% 100%, 20px 20px, 100% 100%;
}

.demo-stage.active { display: block; animation: demo-in 0.3s ease; }

@keyframes demo-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: none; }
}

.demo-copy {
  position: relative;
  z-index: 2;
  max-width: 380px;
  padding: 84px 0 84px 64px;
}

.demo-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.02em;
  margin-bottom: 26px;
}

.demo-brand .brand-mark { width: 26px; height: 26px; }

.demo-copy h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 2.6vw, 38px);
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.08;
  margin-bottom: 16px;
}

.demo-copy p {
  font-size: 15.5px;
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 28px;
}

.demo-window {
  position: absolute;
  top: 72px;
  left: 46%;
  right: -70px;
  bottom: -40px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.demo-canvas {
  position: relative;
  flex: 1;
  background: radial-gradient(circle, var(--border) 1px, transparent 1px);
  background-size: 20px 20px;
}

.demo-canvas .canvas-links { position: absolute; inset: 0; width: 100%; height: 100%; }

/* secure AI section (visual + copy) */

.sp-secure {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 72px;
  align-items: center;
}

.sp-art {
  position: relative;
  aspect-ratio: 4 / 3.1;
  border-radius: 18px;
  overflow: hidden;
  background: linear-gradient(180deg, #1A1A20, #0C0C0E);
  box-shadow: var(--shadow-lg);
}

.sp-art-facade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 42%, rgba(255, 255, 255, 0.06) 42%, rgba(255, 255, 255, 0.06) 58%, transparent 58%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.07) 0 1.5px, transparent 1.5px 34px),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0 1.5px, transparent 1.5px 26px),
    radial-gradient(70% 60% at 70% 0%, rgba(59, 79, 255, 0.22), transparent 70%);
}

.sp-art-badge {
  position: absolute;
  left: 18px;
  bottom: 18px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(6px);
  padding: 7px 13px;
  border-radius: 20px;
}

.sp-secure-btn { margin-top: 30px; }

/* fastest-time-to-value + form */

.sp-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}

.sp-checklist { margin-top: 28px; display: flex; flex-direction: column; gap: 12px; }

.sp-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  font-size: 15px;
  color: var(--ink-soft);
}

.check {
  width: 20px; height: 20px;
  flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: #E7F6EF;
  color: var(--green);
  font-size: 11px;
  margin-top: 1px;
}

.sp-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.sp-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
}

.sp-form input, .sp-form select, .sp-form textarea {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--ink);
  background: #FDFDFC;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 10px 13px;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.sp-form input:focus, .sp-form select:focus, .sp-form textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 79, 255, 0.12);
}

.sp-form textarea { resize: vertical; }

.sp-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.sp-check {
  flex-direction: row !important;
  align-items: center;
  font-weight: 400 !important;
  color: var(--muted) !important;
  font-size: 12.5px;
  gap: 9px !important;
}

.sp-check input { accent-color: var(--accent); }

.sp-submit { width: 100%; }

.sp-thanks {
  font-size: 14px;
  font-weight: 600;
  color: var(--green);
  text-align: center;
}

/* case study */

.cs-card {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-top: 56px;
  box-shadow: var(--shadow-sm);
}

.cs-metric {
  background: var(--dark);
  color: #fff;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 48px 28px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cs-metric::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(60% 60% at 50% 110%, rgba(59, 79, 255, 0.35), transparent 70%);
}

.cs-num {
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(40px, 4vw, 56px);
  font-weight: 650;
  letter-spacing: -0.03em;
  white-space: nowrap;
}

.cs-label {
  position: relative;
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.6);
  max-width: 200px;
  line-height: 1.7;
}

.cs-body { padding: 40px 44px; }

.cs-body > p { font-size: 16px; line-height: 1.7; color: var(--ink-soft); }

.cs-wf {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.cs-wf-label {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.14em;
  color: var(--faint);
  margin-right: 6px;
}

.cs-chip {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-soft);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 6px 14px;
  background: #FDFDFC;
}



/* use-cases collection banner */

.uc-banner {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--dark);
  border-radius: 24px;
  padding: 56px 60px;
  margin-top: 18px;
  position: relative;
  overflow: hidden;
}

.uc-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(50% 80% at 100% 100%, rgba(59, 79, 255, 0.2), transparent 70%);
  pointer-events: none;
}

.ucb-copy { position: relative; }

.ucb-copy h3 {
  font-family: var(--font-display);
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 14px;
}

.ucb-sub {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.65;
  max-width: 460px;
  margin-bottom: 26px;
}

.ucb-tile {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 16px;
  background:
    radial-gradient(60% 60% at 50% 30%, rgba(59, 79, 255, 0.25), transparent 75%),
    linear-gradient(180deg, #1B1B21, #101014);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.ucb-tile .brand-mark { width: 72px; height: 72px; border-radius: 18px; margin-bottom: 12px; box-shadow: 0 0 60px rgba(59, 79, 255, 0.4); }

.ucb-tile-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #fff;
}

.ucb-tile-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.45);
}

/* CTA split */

.cta-split {
  position: relative;
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 64px;
  align-items: center;
}

.cta-split .hero-cta.cta-left { justify-content: flex-start; }

.cta-split .section-sub { margin-left: 0; }

.cta-tile {
  aspect-ratio: 1 / 1;
  max-width: 320px;
  width: 100%;
  justify-self: end;
  border-radius: 24px;
  background:
    radial-gradient(60% 60% at 50% 35%, rgba(59, 79, 255, 0.3), transparent 75%),
    linear-gradient(180deg, #17171C, #0E0E11);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cta-tile .brand-mark {
  width: 104px;
  height: 104px;
  border-radius: 26px;
  box-shadow: 0 0 80px rgba(59, 79, 255, 0.45);
}

/* FAQ */

.sp-faq { max-width: 760px; }

.faq-list { margin-top: 48px; display: flex; flex-direction: column; gap: 10px; }

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0 22px;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: -0.015em;
  padding: 18px 0;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-plus {
  font-size: 18px;
  font-weight: 400;
  color: var(--muted);
  transition: transform 0.2s ease;
  flex-shrink: 0;
}

.faq-item[open] .faq-plus { transform: rotate(45deg); }

.faq-item p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.65;
  padding-bottom: 18px;
}

/* responsive */

@media (max-width: 1024px) {
  .demo-tabs { grid-template-columns: 1fr; gap: 8px; }
  .demo-tab { padding: 14px 18px; font-size: 15px; }
  .demo-stage { min-height: 0; }
  .demo-copy { max-width: none; padding: 36px 24px 8px; }
  .demo-window { position: static; margin: 20px 16px 16px; border-radius: 12px; }
  .demo-canvas { min-height: 0; padding: 8px 0 12px; }
  .demo-canvas .canvas-links { display: none; }
  .demo-canvas .node { position: static; width: auto; margin: 10px 14px; }
  .sp-split { grid-template-columns: 1fr; gap: 48px; }
  .sp-secure { grid-template-columns: 1fr; gap: 44px; }
  .uc-banner { grid-template-columns: 1fr; padding: 40px 32px; }
  .ucb-tile { max-width: 380px; }
  .cta-split { grid-template-columns: 1fr; }
  .cta-tile { justify-self: start; max-width: 260px; }
}

@media (max-width: 640px) {
  .sp-highlights { grid-template-columns: 1fr; margin-top: 44px; }
  .sp-form-row { grid-template-columns: 1fr; }
  .cs-card { grid-template-columns: 1fr; }
  .cs-body { padding: 26px 22px; }
  .uc-banner { padding: 30px 22px; }
}