/*
  Dynamic Agility Website
  Landing page for the broader Dynamic Agility system
*/

.da-landing-page {
  --landing-ink: #071426;
  --landing-muted: #52657d;
  --landing-line: rgba(37, 99, 235, 0.14);
  --landing-blue: #2563eb;
  --landing-sky: #38bdf8;
  --landing-paper: #f7fcff;
  min-height: 100vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 12% 0%, rgba(186, 230, 253, 0.62), transparent 30rem),
    radial-gradient(circle at 88% 8%, rgba(37, 99, 235, 0.18), transparent 35rem),
    linear-gradient(180deg, #ffffff, var(--landing-paper) 42%, #eef8ff);
  color: var(--landing-ink);
}

.da-landing-topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  width: min(84rem, calc(100% - 2rem));
  margin: 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid rgba(37, 99, 235, 0.12);
  background: rgba(247, 252, 255, 0.78);
  padding: 1rem 0;
  backdrop-filter: blur(18px);
}

.da-landing-brand,
.da-landing-topbar a {
  color: var(--landing-ink);
  text-decoration: none;
}

.da-landing-brand {
  font-weight: 860;
  letter-spacing: 0.02em;
}

.da-landing-topbar nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  justify-content: flex-end;
}

.da-landing-topbar nav a {
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--landing-muted);
  font-size: 0.82rem;
  font-weight: 760;
  padding: 0.55rem 0.78rem;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.da-landing-topbar nav a:hover {
  border-color: var(--landing-line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--landing-blue);
  transform: translateY(-1px);
}

.da-landing-hero,
.da-landing-section,
.da-landing-final-cta {
  width: min(84rem, calc(100% - 2rem));
  margin-inline: auto;
}

.da-landing-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(20rem, 0.78fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  min-height: calc(100vh - 5rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.da-landing-hero-copy h1,
.da-landing-section h2,
.da-landing-final-cta h2 {
  margin: 0;
  color: var(--landing-ink);
  letter-spacing: -0.07em;
  text-wrap: balance;
}

.da-landing-hero-copy h1 {
  max-width: 13ch;
  font-size: clamp(4.2rem, 9vw, 9rem);
  line-height: 0.86;
}

.da-landing-hero-copy > p:not(.da-overline),
.da-section-heading > p:not(.da-overline),
.da-landing-final-cta > p:not(.da-overline) {
  max-width: 54rem;
  color: var(--landing-muted);
  font-size: clamp(1.05rem, 1.7vw, 1.35rem);
  line-height: 1.68;
}

.da-landing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.da-landing-primary,
.da-landing-secondary,
.da-offer-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.9rem 1.15rem;
  font-size: 0.9rem;
  font-weight: 820;
  text-decoration: none;
  transition: transform 170ms ease, filter 170ms ease, border-color 170ms ease;
}

.da-landing-primary,
.da-offer-card a {
  border: 1px solid transparent;
  background: linear-gradient(135deg, var(--landing-blue), #0284c7);
  color: #fff;
}

.da-landing-secondary {
  border: 1px solid rgba(37, 99, 235, 0.18);
  background: rgba(255, 255, 255, 0.72);
  color: var(--landing-ink);
}

.da-landing-primary:hover,
.da-landing-secondary:hover,
.da-offer-card a:hover {
  filter: brightness(1.04) saturate(1.04);
  transform: translateY(-2px);
}

.da-landing-system-card {
  display: grid;
  gap: 1.2rem;
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 2rem;
  background:
    radial-gradient(circle at 90% 0%, rgba(56, 189, 248, 0.28), transparent 20rem),
    rgba(255, 255, 255, 0.78);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.12);
  padding: clamp(1.2rem, 3vw, 2rem);
  backdrop-filter: blur(18px);
}

.da-landing-system-card > span,
.da-landing-signal-grid span,
.da-landing-logic-grid span,
.da-offer-card span,
.da-case-entry-card span {
  color: var(--landing-blue);
  font-size: 0.72rem;
  font-weight: 860;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.da-system-loop {
  display: grid;
  gap: 0.75rem;
}

.da-system-loop strong {
  display: block;
  border: 1px solid rgba(37, 99, 235, 0.14);
  border-radius: 1.2rem;
  background: rgba(255, 255, 255, 0.74);
  color: var(--landing-ink);
  padding: 1rem;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
}

.da-landing-system-card p {
  margin: 0;
  color: var(--landing-muted);
  line-height: 1.6;
}

.da-landing-section {
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.da-section-heading h2,
.da-landing-final-cta h2 {
  max-width: 14ch;
  font-size: clamp(2.8rem, 6vw, 6rem);
  line-height: 0.9;
}

.da-landing-signal-grid,
.da-landing-logic-grid,
.da-landing-offer-grid,
.da-case-entry-grid {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 3vw, 2.3rem);
}

.da-landing-signal-grid,
.da-case-entry-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.da-landing-logic-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.da-landing-offer-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.da-landing-signal-grid article,
.da-landing-logic-grid article,
.da-offer-card,
.da-case-entry-card {
  border: 1px solid var(--landing-line);
  border-radius: 1.6rem;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 8px 28px rgba(15, 23, 42, 0.06);
  padding: 1.15rem;
}

.da-landing-signal-grid h3,
.da-landing-logic-grid h3,
.da-offer-card h3,
.da-case-entry-card h3 {
  margin: 0.75rem 0 0;
  color: var(--landing-ink);
  font-size: clamp(1.05rem, 1.7vw, 1.45rem);
  line-height: 1.14;
  letter-spacing: -0.035em;
}

.da-landing-signal-grid p,
.da-landing-logic-grid p,
.da-offer-card p,
.da-case-entry-card p {
  margin: 0.65rem 0 0;
  color: var(--landing-muted);
  line-height: 1.58;
}

.da-offer-featured {
  grid-row: span 2;
  display: grid;
  align-content: start;
  background:
    radial-gradient(circle at 12% 0%, rgba(186, 230, 253, 0.58), transparent 22rem),
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(224, 242, 254, 0.68));
}

.da-offer-card a {
  justify-self: start;
  margin-top: 1rem;
}

.da-landing-final-cta {
  margin-bottom: clamp(3rem, 7vw, 6rem);
  border: 1px solid rgba(37, 99, 235, 0.16);
  border-radius: 2.2rem;
  background:
    radial-gradient(circle at 12% 10%, rgba(56, 189, 248, 0.24), transparent 22rem),
    linear-gradient(135deg, #071426, #0f2744);
  color: #fff;
  padding: clamp(1.6rem, 4vw, 3rem);
}

.da-landing-final-cta h2,
.da-landing-final-cta .da-overline {
  color: #fff;
}

.da-landing-final-cta > p:not(.da-overline) {
  color: rgba(255, 255, 255, 0.72);
}

.da-landing-final-cta .da-landing-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.22);
  background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 1050px) {
  .da-landing-hero,
  .da-landing-offer-grid {
    grid-template-columns: 1fr;
  }

  .da-landing-signal-grid,
  .da-case-entry-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .da-landing-topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .da-landing-logic-grid,
  .da-landing-signal-grid,
  .da-case-entry-grid {
    grid-template-columns: 1fr;
  }

  .da-landing-hero-copy h1 {
    font-size: clamp(3.3rem, 16vw, 5.8rem);
  }
}