:root {
  --brand-blue: #10284e;
  --brand-green: #30caa0;
  --brand-green-light: #4dd4b0;
  --brand-green-dark: #28b894;
  --text-dark: #2c3e50;
  --text-light: #7f8c8d;
  --white: #f8f9fa;
  --shadow: 0 8px 32px rgba(16, 40, 78, 0.12);
  --shadow-hover: 0 16px 48px rgba(16, 40, 78, 0.18);
  --gradient-primary: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-green) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--brand-green) 0%, var(--brand-green-dark) 100%);
  --header-max-width: 1320px;
}

/* ── Sticky site header (topbar + navbar) ───────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1050;
  width: 100%;
  background: #fff;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(16, 40, 78, 0.12);
}

/* ── Top bar ─────────────────────────────────────────────── */
.topbar {
  background: #f3f5f7;
  border-bottom: 1px solid rgba(16, 40, 78, 0.08);
  font-size: 0.875rem;
  color: var(--brand-blue);
}

.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 42px;
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
}

.topbar-contact {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--brand-blue);
  text-decoration: none;
  line-height: 1;
  transition: color 0.2s ease;
}

.topbar-link i {
  color: var(--brand-green);
  font-size: 0.8rem;
  width: 1rem;
  text-align: center;
}

.topbar-link:hover {
  color: var(--brand-green-dark);
}

.topbar-social {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
}

.topbar-social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  color: var(--brand-blue);
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.topbar-social-link:hover {
  background: rgba(48, 202, 160, 0.15);
  color: var(--brand-green-dark);
  transform: translateY(-1px);
}

/* ── Main navbar ───────────────────────────────────────── */
.vincent-navbar {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px) saturate(140%);
  box-shadow: none;
  border-bottom: 1px solid rgba(16, 40, 78, 0.06);
  position: relative;
  z-index: 1;
  font-family: 'Poppins', 'Segoe UI', sans-serif;
  text-transform: none;
  padding: 0;
  min-height: 76px;
}

.vincent-navbar .navbar-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  max-width: var(--header-max-width);
  padding-left: 1rem;
  padding-right: 1rem;
}

.vincent-navbar.scrolled {
  box-shadow: none;
}

/* removed navbar-hidden – header stays sticky on scroll */

/* Brand */
.vincent-navbar .navbar-brand {
  font-weight: 800;
  font-size: 1.45rem;
  color: var(--brand-blue) !important;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  padding: 0.75rem 0;
  margin-right: 1.5rem;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
}

.vincent-navbar .navbar-brand img,
.vincent-navbar .brand-logo {
  height: 42px;
  width: auto !important;
  max-width: 160px;
  object-fit: contain;
  border-radius: 6px;
}

.vincent-navbar .navbar-brand .brand-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 800;
  line-height: 1.1;
  font-size: 1rem;
  max-width: 11rem;
  white-space: normal;
  text-align: left;
}

/* Nav menu layout */
.vincent-navbar .navbar-menu {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.vincent-navbar .nav-item {
  display: flex;
  align-items: center;
}

.vincent-navbar .nav-divider {
  width: 1px;
  height: 28px;
  background: rgba(16, 40, 78, 0.12);
  margin: 0 0.65rem;
  align-self: center;
  list-style: none;
}

/* Nav links – unified height & icon alignment */
.vincent-navbar .nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  color: var(--brand-blue) !important;
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  line-height: 1;
  min-height: 42px;
  padding: 0.55rem 0.9rem;
  border-radius: 10px;
  margin: 0;
  position: relative;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.vincent-navbar .nav-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  font-size: 0.85rem;
  flex-shrink: 0;
  opacity: 0.85;
}

.vincent-navbar .nav-text {
  display: inline-block;
  line-height: 1;
}

.vincent-navbar .nav-link::before {
  display: none;
}

.vincent-navbar .nav-link:hover {
  color: var(--brand-green-dark) !important;
  background: rgba(48, 202, 160, 0.1);
  transform: none;
  box-shadow: none;
}

.vincent-navbar .nav-link.active:not(.cta-btn) {
  color: var(--brand-green-dark) !important;
  background: rgba(48, 202, 160, 0.14);
  box-shadow: inset 0 -2px 0 var(--brand-green);
  transform: none;
}

/* CTA buttons – Register / Logout only */
.vincent-navbar .nav-link.cta-btn {
  background: var(--gradient-secondary);
  color: #fff !important;
  border-radius: 999px;
  min-height: 42px;
  padding: 0.55rem 1.15rem;
  margin-left: 0.35rem;
  font-weight: 700;
  box-shadow: 0 3px 12px rgba(48, 202, 160, 0.28);
}

.vincent-navbar .nav-link.cta-btn:hover {
  background: linear-gradient(135deg, var(--brand-green-dark) 0%, var(--brand-green) 100%);
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(48, 202, 160, 0.32);
}

.vincent-navbar .nav-link.cta-btn .nav-icon {
  opacity: 1;
}

/* Mobile toggle */
.vincent-navbar .navbar-toggler {
  border: 1px solid rgba(48, 202, 160, 0.25);
  padding: 0.45rem 0.6rem;
  background: rgba(48, 202, 160, 0.08);
  border-radius: 8px;
}

.vincent-navbar .navbar-toggler:focus {
  box-shadow: 0 0 0 0.2rem rgba(48, 202, 160, 0.2);
}

.vincent-navbar .navbar-toggler-icon {
  width: 1.35rem;
  height: 1.35rem;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2848, 202, 160, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Ripple (click feedback) */
.vincent-navbar .nav-link .ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.35);
  transform: scale(0);
  animation: nav-ripple 0.6s ease-out;
  pointer-events: none;
}

@keyframes nav-ripple {
  to {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* ── Responsive ─────────────────────────────────────────── */
@media (max-width: 991px) {
  .topbar-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-top: 0.65rem;
    padding-bottom: 0.65rem;
  }

  .topbar-contact {
    justify-content: center;
    gap: 0.75rem;
  }

  .topbar-social {
    margin-left: 0;
  }

  .vincent-navbar .navbar-collapse {
    background: #fff;
    box-shadow: 0 12px 32px rgba(16, 40, 78, 0.12);
    border-radius: 14px;
    margin-top: 0.75rem;
    padding: 1rem;
    border: 1px solid rgba(16, 40, 78, 0.08);
  }

  .vincent-navbar .navbar-menu {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0.25rem;
  }

  .vincent-navbar .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 0.75rem 1rem;
  }

  .vincent-navbar .nav-link.cta-btn {
    margin-left: 0;
    justify-content: center;
  }

  .vincent-navbar .nav-divider {
    width: 100%;
    height: 1px;
    margin: 0.5rem 0;
  }

  .vincent-navbar .navbar-collapse:not(.show) {
    display: none !important;
  }

  .vincent-navbar .navbar-collapse.show {
    display: block !important;
    animation: slideDown 0.25s ease-out;
  }
}

@media (max-width: 768px) {
  .vincent-navbar {
    min-height: 68px;
  }

  .vincent-navbar .navbar-brand {
    font-size: 1.25rem;
  }

  .vincent-navbar .navbar-brand img,
  .vincent-navbar .brand-logo {
    height: 36px;
  }

  .topbar-link span {
    font-size: 0.82rem;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Accessibility */
.vincent-navbar .nav-link:focus-visible {
  outline: 2px solid var(--brand-green);
  outline-offset: 2px;
}

@media (prefers-contrast: high) {
  .vincent-navbar {
    background: #fff;
    border-bottom: 2px solid var(--brand-blue);
  }
}