:root {
  --brand-font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --brand-color-primary: #007bff;
  --brand-color-primary-dark: #0056b3;
  --brand-color-accent: #ff8c00;
  --brand-color-accent-dark: #e07b00;
  --brand-color-bg: #f8fafc;
  --brand-color-surface: #ffffff;
  --brand-color-border: #e2e8f0;
  --brand-color-text: #0f172a;
  --brand-color-text-muted: #64748b;
}

/* Generic layout helpers */
.brand-body {
  font-family: var(--brand-font-sans);
  color: var(--brand-color-text);
  background-color: var(--brand-color-bg);
}

.brand-container {
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.brand-section {
  padding-top: 3rem;
  padding-bottom: 3rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease,
    transform 0.1s ease, border-color 0.15s ease;
}

.btn-primary {
  background-color: var(--brand-color-primary);
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(0, 123, 255, 0.25);
}

.btn-primary:hover {
  background-color: var(--brand-color-primary-dark);
  box-shadow: 0 18px 35px rgba(0, 86, 179, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--brand-color-text);
  border-color: var(--brand-color-border);
}

.btn-secondary:hover {
  border-color: rgba(0, 123, 255, 0.6);
  color: var(--brand-color-primary);
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.08);
  transform: translateY(-1px);
}

/* Global Navigation Shell */
.nav-shell {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  background-color: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.nav-inner {
  height: 4.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--brand-color-text);
}

.nav-logo-mark {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(
    135deg,
    var(--brand-color-primary) 0%,
    var(--brand-color-accent) 100%
  );
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(0, 123, 255, 0.55);
}

.nav-brand-text {
  display: flex;
  flex-direction: column;
}

.nav-brand-title {
  font-weight: 700;
  letter-spacing: -0.03em;
  font-size: 1.15rem;
}

.nav-brand-subtitle {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--brand-color-primary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--brand-color-text-muted);
  padding: 0.25rem 0;
  position: relative;
  transition: color 0.15s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.2rem;
  height: 2px;
  width: 0;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    var(--brand-color-primary),
    var(--brand-color-accent)
  );
  transition: width 0.18s ease;
}

.nav-link:hover {
  color: var(--brand-color-primary);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  margin-left: 1rem;
}

/* Mobile nav */
.nav-toggle {
  display: none;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.8);
  background-color: rgba(255, 255, 255, 0.9);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.nav-toggle-bar {
  width: 1.1rem;
  height: 2px;
  border-radius: 999px;
  background-color: #0f172a;
  position: relative;
}

.nav-toggle-bar::before,
.nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background-color: inherit;
}

.nav-toggle-bar::before {
  top: -0.28rem;
}

.nav-toggle-bar::after {
  top: 0.28rem;
}

.nav-links-mobile {
  display: none;
  border-top: 1px solid rgba(226, 232, 240, 0.9);
  padding: 0.75rem 0 1rem;
}

.nav-links-mobile a {
  display: block;
  padding: 0.45rem 0;
}

@media (max-width: 768px) {
  .nav-links-desktop {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links-mobile {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(18px);
    border-top: 1px solid rgba(226, 232, 240, 0.9);
    padding: 1rem 1.5rem 1.5rem;
    flex-direction: column;
  }

  .nav-links-mobile.open {
    display: flex;
  }

  .nav-links-mobile .nav-link {
    display: block;
    padding: 0.6rem 0;
  }
}