/* css styles */

/* ======================================================
   MATTEO'S LAB NAVBAR
   ====================================================== */

:root {
  --nav-abyss: #021c26;
  --nav-deep: #032b38;
  --nav-ocean: #06495a;
  --nav-lagoon: #14a8bb;
  --nav-cyan: #5bd3e3;
  --nav-reef: #81e2dc;
  --nav-foam: #e9faf7;
  --nav-white: #ffffff;
}

.navbar {
  position: relative;
  min-height: 82px;
  padding-top: 0.75rem;
  padding-bottom: 1rem;
  border: 0 !important;
  background: rgba(250, 253, 253, 0.96) !important;
  box-shadow: 0 10px 34px rgba(2, 28, 38, 0.09);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

/*
 * Abstract ocean-navigation geometry.
 * This is a general geometric motif rather than a copy
 * of a specific cultural or ceremonial pattern.
 */

.navbar::after {
  content: "";
  position: absolute;
  z-index: 0;
  right: 0;
  bottom: 0;
  left: 0;
  height: 8px;
  background:
    linear-gradient(
      135deg,
      transparent 38%,
      rgba(91, 211, 227, 0.8) 39% 47%,
      transparent 48%
    ),
    linear-gradient(
      45deg,
      transparent 38%,
      rgba(20, 168, 187, 0.55) 39% 47%,
      transparent 48%
    ),
    linear-gradient(90deg, var(--nav-deep), var(--nav-ocean), var(--nav-lagoon));
  background-size:
    28px 28px,
    28px 28px,
    100% 100%;
}

.navbar-container {
  position: relative;
  z-index: 2;
}

/* Brand */

.navbar-brand {
  display: inline-flex;
  gap: 0.75rem;
  align-items: center;
  color: var(--nav-deep) !important;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.navbar-brand::before {
  content: "";
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border: 1px solid rgba(20, 168, 187, 0.3);
  border-radius: 50%;
  background:
    radial-gradient(circle at center, var(--nav-deep) 0 4px, transparent 5px),
    conic-gradient(
      from 45deg,
      var(--nav-cyan) 0deg 45deg,
      var(--nav-deep) 45deg 90deg,
      var(--nav-reef) 90deg 135deg,
      var(--nav-ocean) 135deg 180deg,
      var(--nav-cyan) 180deg 225deg,
      var(--nav-deep) 225deg 270deg,
      var(--nav-reef) 270deg 315deg,
      var(--nav-ocean) 315deg 360deg
    );
  box-shadow:
    inset 0 0 0 7px rgba(255, 255, 255, 0.88),
    0 5px 14px rgba(3, 43, 56, 0.12);
  transition:
    transform 180ms ease,
    box-shadow 180ms ease;
}

.navbar-brand:hover::before {
  transform: rotate(12deg) scale(1.04);
  box-shadow:
    inset 0 0 0 7px rgba(255, 255, 255, 0.9),
    0 8px 20px rgba(3, 43, 56, 0.16);
}

/* Main links */

.navbar-nav {
  gap: 0.2rem;
}

.navbar-nav .nav-link {
  padding: 0.65rem 0.9rem !important;
  border-radius: 999px;
  color: rgba(3, 43, 56, 0.75) !important;
  font-weight: 700;
  transition:
    color 160ms ease,
    background 160ms ease,
    transform 160ms ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link:focus {
  transform: translateY(-1px);
  color: var(--nav-deep) !important;
  background: rgba(91, 211, 227, 0.13);
}

.navbar-nav .nav-link.active,
.navbar-nav .show > .nav-link {
  color: var(--nav-deep) !important;
  background: rgba(20, 168, 187, 0.14);
}

/* Main website link */

.navbar a[href^="https://matteoarellano.com"] {
  display: inline-flex;
  gap: 0.45rem;
  align-items: center;
  margin-right: 0.25rem;
  padding-right: 1rem !important;
  padding-left: 1rem !important;
  border: 1px solid rgba(6, 73, 90, 0.18);
  color: var(--nav-ocean) !important;
  background: rgba(255, 255, 255, 0.75);
}

.navbar a[href^="https://matteoarellano.com"]::after {
  content: "↗";
  color: var(--nav-lagoon);
  font-size: 0.95em;
}

/* Dropdown */

.navbar .dropdown-menu {
  min-width: 270px;
  margin-top: 0.7rem;
  padding: 0.65rem;
  overflow: hidden;
  border: 1px solid rgba(6, 73, 90, 0.13);
  border-radius: 18px;
  background:
    radial-gradient(
      circle at 100% 0%,
      rgba(91, 211, 227, 0.1),
      transparent 45%
    ),
    rgba(255, 255, 255, 0.98);
  box-shadow: 0 22px 60px rgba(2, 28, 38, 0.14);
}

.navbar .dropdown-item {
  padding: 0.75rem 0.85rem;
  border-radius: 12px;
  color: rgba(3, 43, 56, 0.8);
  font-weight: 650;
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item:focus {
  color: var(--nav-deep);
  background: rgba(91, 211, 227, 0.13);
}

/* Search */

.navbar .quarto-search-button,
.navbar .quarto-navigation-tool,
.navbar .aa-DetachedSearchButton {
  display: inline-grid;
  width: 44px;
  height: 44px;
  place-items: center;
  padding: 0 !important;
  border: 1px solid rgba(6, 73, 90, 0.15) !important;
  border-radius: 50% !important;
  color: var(--nav-ocean) !important;
  background: rgba(255, 255, 255, 0.75) !important;
}

.navbar .quarto-search-button:hover,
.navbar .quarto-navigation-tool:hover,
.navbar .aa-DetachedSearchButton:hover {
  color: var(--nav-deep) !important;
  background: rgba(91, 211, 227, 0.16) !important;
}

/* Mobile */

@media (max-width: 991px) {
  .navbar {
    min-height: 72px;
  }

  .navbar-brand::before {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
  }

  .navbar-collapse {
    margin-top: 0.8rem;
    padding: 1rem;
    border: 1px solid rgba(6, 73, 90, 0.12);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 20px 50px rgba(2, 28, 38, 0.12);
  }

  .navbar-nav .nav-link {
    border-radius: 12px;
  }

  .navbar a[href^="https://matteoarellano.com"] {
    width: fit-content;
    margin-top: 0.5rem;
  }
}

@media (max-width: 520px) {
  .navbar-brand {
    gap: 0.55rem;
    font-size: 1.05rem;
  }

  .navbar-brand::before {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
    box-shadow:
      inset 0 0 0 5px rgba(255, 255, 255, 0.9),
      0 4px 12px rgba(3, 43, 56, 0.12);
  }
}