:root {
  --brand-blue: #0D3245;
  --brand-blue-dark: #082C3D;
  --brand-blue-soft: #113142;
  --brand-text-light: #D7E6EC;

  --brand-gold: #D4AF37;
  --brand-gold-hover: #C49A2C;

  --white: #FFFFFF;

  --header-border: rgba(255, 255, 255, 0.10);
  --nav-border: rgba(255, 255, 255, 0.18);
  --nav-hover-bg: rgba(255, 255, 255, 0.08);

  --gold-shadow: rgba(212, 175, 55, 0.28);
  --gold-shadow-hover: rgba(212, 175, 55, 0.38);
}

/* ── Header ── */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;

  /* Igual ao azul do logo, com leve profundidade */
  background: linear-gradient(
          180deg,
          rgba(13, 50, 69, 0.97) 0%,
          rgba(8, 44, 61, 0.97) 100%
  );

  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);

  border-bottom: 1px solid var(--header-border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.14);

  transition:
          background 0.3s ease,
          box-shadow 0.3s ease,
          border-color 0.3s ease;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.95rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-right: 2rem;
  flex-shrink: 0;
}

.logo-img {
  height: 55px;
  width: auto;
  border-radius: 10px;
  object-fit: contain;
  cursor: pointer;
  transition:
          transform 0.25s ease,
          box-shadow 0.25s ease;
}

.logo-img:hover {
  transform: scale(1.04);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav a {
  color: var(--brand-text-light);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  position: relative;
  transition:
          color 0.25s ease,
          opacity 0.25s ease;
}

.nav a:hover {
  color: var(--white);
}

.btn-nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0.55rem 1.1rem;
  border-radius: 10px;
  border: 1px solid var(--nav-border);
  background: transparent;
  color: rgba(255, 255, 255, 0.88) !important;
  cursor: pointer;
  font-weight: 600;
  transition:
          background 0.25s ease,
          border-color 0.25s ease,
          color 0.25s ease,
          transform 0.25s ease,
          box-shadow 0.25s ease;
}

.btn-nav:hover {
  background: var(--nav-hover-bg);
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--white) !important;
  transform: translateY(-1px);
}

/* CTA dourado */
.btn-nav.btn-highlight {
  background: linear-gradient(
          180deg,
          #DEBB4A 0%,
          var(--brand-gold) 100%
  );
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--brand-blue-dark) !important;
  font-weight: 700;
  box-shadow: 0 6px 16px var(--gold-shadow);
}

.btn-nav.btn-highlight:hover {
  background: linear-gradient(
          180deg,
          #D6B13B 0%,
          var(--brand-gold-hover) 100%
  );
  box-shadow: 0 8px 20px var(--gold-shadow-hover);
  transform: translateY(-2px);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .header .container {
    padding: 0.85rem 1rem;
    gap: 0.75rem;
  }

  .logo {
    margin-right: 0;
  }

  .logo-img {
    height: 46px;
  }

  .nav {
    flex: 1;
    min-width: 0;
    gap: 0.75rem;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.2rem;
    scrollbar-width: none;
    -ms-overflow-style: none;
  }

  .nav::-webkit-scrollbar {
    display: none;
  }

  .nav a {
    flex: 0 0 auto;
    font-size: 0.86rem;
  }

  .btn-nav {
    min-height: 36px;
    padding: 0.42rem 0.85rem;
    border-radius: 8px;
  }
}

@media (max-width: 640px) {
  .header .container {
    padding: 0.65rem 0.75rem;
    align-items: stretch;
    gap: 0.5rem;
    flex-direction: column;
  }

  .logo {
    justify-content: center;
  }

  .logo-img {
    height: 40px;
  }

  .nav {
    display: flex;
    width: 100%;
    gap: 0.6rem;
    justify-content: flex-start;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 0.2rem;
    -webkit-overflow-scrolling: touch;
  }

  .nav a {
    font-size: 0.82rem;
  }

  .btn-nav {
    min-height: 34px;
    font-size: 0.8rem;
    padding: 0.35rem 0.65rem;
  }
}