/* =========================================================
   Captain's Toolkit
   Navigation System
   ========================================================= */

/* ---------- Sidebar brand ---------- */

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand-mark {
  width: 44px;
  height: 44px;
  flex: 0 0 auto;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.28), transparent 28px),
    linear-gradient(135deg, var(--color-blue), #0ea5e9);
  color: #ffffff;
  font-weight: 900;
  letter-spacing: -0.05em;
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.28);
}

.sidebar-brand strong {
  display: block;
  font-size: var(--text-sm);
  line-height: var(--leading-tight);
  color: #ffffff;
}

.sidebar-brand span {
  display: block;
  margin-top: 0.15rem;
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.62);
}

/* ---------- Sidebar navigation ---------- */

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-nav-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-nav-title {
  margin: var(--space-3) 0 var(--space-1);
  padding: 0 var(--space-3);
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav-link {
  position: relative;
  min-height: 44px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: rgba(255, 255, 255, 0.72);
  font-size: var(--text-sm);
  font-weight: 700;
  text-decoration: none;
  outline: none;
  transition:
    color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 50%;
  width: 3px;
  height: 0;
  border-radius: var(--radius-full);
  background: #ffffff;
  transform: translateY(-50%);
  opacity: 0;
  transition:
    height var(--transition-fast),
    opacity var(--transition-fast);
}

.nav-link:hover {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
  transform: translateX(2px);
}

.nav-link:focus-visible {
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.28);
}

.nav-link.active,
.nav-link[aria-current="page"] {
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.98), rgba(14, 165, 233, 0.9));
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.3);
}

.nav-link.active::before,
.nav-link[aria-current="page"]::before {
  height: 20px;
  opacity: 1;
}

.nav-link-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
}

.nav-link-label {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.nav-link-badge {
  min-width: 1.35rem;
  height: 1.35rem;
  padding: 0 0.4rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.14);
  color: rgba(255, 255, 255, 0.86);
  font-size: 0.68rem;
  font-weight: 800;
}

.nav-link.active .nav-link-badge,
.nav-link[aria-current="page"] .nav-link-badge {
  background: rgba(255, 255, 255, 0.22);
  color: #ffffff;
}

/* ---------- Emergency navigation item ---------- */

.nav-link-emergency {
  margin-top: var(--space-2);
  color: #ffffff;
  background: rgba(130, 96, 96, 0.6);
  border: 1px solid rgba(248, 113, 113, 0.28);
}

.nav-link-emergency:hover,
.nav-link-emergency:focus-visible {
  background: rgba(220, 38, 38, 0.26);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.16);
}

.nav-link-emergency.active,
.nav-link-emergency[aria-current="page"] {
  background: linear-gradient(135deg, #dc2626, #ef4444);
  box-shadow: 0 12px 28px rgba(220, 38, 38, 0.35);
}

/* ---------- Sidebar footer ---------- */

.sidebar-footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sidebar-footer small {
  color: rgba(255, 255, 255, 0.58);
  line-height: 1.45;
}

.sidebar-footer-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.sidebar-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.74);
  font-size: var(--text-xs);
  font-weight: 700;
}

.sidebar-status::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12);
}

.sidebar-status.is-offline::before {
  background: #f97316;
  box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.14);
}

/* ---------- Mobile sidebar close ---------- */

.sidebar-close {
  display: none;
  position: absolute;
  top: calc(var(--space-4) + env(safe-area-inset-top));
  right: var(--space-4);
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  cursor: pointer;
  transition:
    background var(--transition-fast),
    transform var(--transition-fast);
}

.sidebar-close:hover {
  background: rgba(255, 255, 255, 0.16);
  transform: scale(1.03);
}

/* ---------- Bottom navigation ---------- */

.bottom-nav {
  display: none;
}

.bottom-nav-link {
  min-width: 0;
  height: 56px;
  padding: var(--space-2);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 800;
  text-decoration: none;
  outline: none;
  transition:
    color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast),
    transform var(--transition-fast);
}

.bottom-nav-link span {
  font-size: 1.25rem;
  line-height: 1;
}

.bottom-nav-link small {
  max-width: 100%;
  font-size: 0.68rem;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.bottom-nav-link:hover {
  color: var(--color-blue);
  background: rgba(37, 99, 235, 0.08);
}

.bottom-nav-link:focus-visible {
  color: var(--color-blue);
  background: rgba(37, 99, 235, 0.1);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

.bottom-nav-link.active,
.bottom-nav-link[aria-current="page"] {
  color: var(--color-blue);
  background: rgba(37, 99, 235, 0.1);
}

.bottom-nav-link-emergency {
  color: var(--color-red);
}

.bottom-nav-link-emergency:hover,
.bottom-nav-link-emergency.active,
.bottom-nav-link-emergency[aria-current="page"] {
  color: #dc2626;
  background: rgba(220, 38, 38, 0.1);
}

/* ---------- Quick access navigation cards ---------- */

.quick-nav {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-3);
}

.quick-nav-link {
  min-height: 72px;
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: #ffffff;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  box-shadow: var(--shadow-soft);
  transition:
    transform var(--transition-fast),
    border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.quick-nav-link:hover {
  transform: translateY(-2px);
  border-color: rgba(37, 99, 235, 0.28);
  box-shadow: var(--shadow-floating);
}

.quick-nav-icon {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(37, 99, 235, 0.09);
  color: var(--color-blue);
  font-size: 1.25rem;
}

.quick-nav-content {
  min-width: 0;
}

.quick-nav-title {
  display: block;
  font-size: var(--text-sm);
  font-weight: 800;
  color: var(--color-text);
}

.quick-nav-text {
  display: block;
  margin-top: 0.15rem;
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.quick-nav-link-danger {
  border-color: rgba(220, 38, 38, 0.18);
  background: linear-gradient(135deg, #ffffff, rgba(254, 242, 242, 0.88));
}

.quick-nav-link-danger .quick-nav-icon {
  background: rgba(220, 38, 38, 0.1);
  color: #dc2626;
}

.quick-nav-link-danger:hover {
  border-color: rgba(220, 38, 38, 0.32);
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .app-sidebar {
    padding-top: calc(var(--space-5) + env(safe-area-inset-top));
  }

  .sidebar-nav {
    padding-bottom: var(--space-6);
  }

  .sidebar-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .sidebar-brand {
    padding-right: 48px;
  }
}

@media (max-width: 720px) {
  .bottom-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 45;
    height: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom));
    padding: var(--space-2) var(--space-3) calc(var(--space-2) + env(safe-area-inset-bottom));
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--space-1);
    background: rgba(255, 255, 255, 0.94);
    border-top: 1px solid rgba(220, 227, 236, 0.9);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 -10px 30px rgba(15, 23, 42, 0.08);
  }

  .bottom-nav-link {
    height: 54px;
    padding-inline: var(--space-1);
  }

  .quick-nav {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 420px) {
  .bottom-nav {
    padding-inline: var(--space-2);
  }

  .bottom-nav-link small {
    font-size: 0.62rem;
  }

  .bottom-nav-link span {
    font-size: 1.12rem;
  }

  .nav-link {
    min-height: 46px;
  }
}

@media (min-width: 721px) {
  .bottom-nav {
    display: none !important;
  }
}

/* ---------- Print ---------- */

@media print {
  .sidebar-brand,
  .sidebar-nav,
  .sidebar-footer,
  .bottom-nav,
  .quick-nav,
  .sidebar-close {
    display: none !important;
  }
}