/**
 * Mobile sidebar drawer — Oceanic Blue Investments LLC
 *
 * Layout: header (logo + close) | scroll area (nav + services dropdown) | footer (CTA).
 * Sidebar slides in from right with ease-out; backdrop fades; nav items stagger in.
 * Services dropdown is open by default; CTA is always visible at bottom.
 */

@media (min-width: 768px) {
  .mobile-menu-backdrop,
  .mobile-sidebar {
    display: none !important;
  }
}

/* Backdrop: fade + blur, smooth */
.mobile-menu-backdrop {
  position: fixed;
  inset: 0;
  z-index: 9998;
  background: rgba(15, 23, 42, 0.55);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity 400ms cubic-bezier(0.32, 0.72, 0, 1),
    visibility 0s linear 400ms;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.mobile-menu-backdrop.is-open {
  opacity: 1;
  visibility: visible;
  transition: opacity 450ms cubic-bezier(0.32, 0.72, 0, 1);
}

/* Sidebar: column layout, slide from right with slight scale */
.mobile-sidebar {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 92vw);
  max-width: 100%;
  height: auto;
  max-height: 100vh;
  max-height: 100dvh;
  z-index: 9999;
  background: #fff;
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.15);
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  transform: translateX(100%);
  opacity: 0;
  visibility: hidden;
  transition:
    transform 450ms cubic-bezier(0.32, 0.72, 0, 1),
    opacity 350ms ease-out,
    visibility 0s linear 450ms;
}

.dark .mobile-sidebar {
  background: #0f172a;
  box-shadow: -12px 0 40px rgba(0, 0, 0, 0.5);
}

.mobile-sidebar.is-open {
  transform: translateX(0);
  opacity: 1;
  visibility: visible;
  transition:
    transform 450ms cubic-bezier(0.32, 0.72, 0, 1),
    opacity 350ms ease-out 50ms,
    visibility 0s;
}

/* Header: logo + close */
.mobile-sidebar-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.dark .mobile-sidebar-header {
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.mobile-sidebar-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: inherit;
}

.mobile-sidebar-logo-text {
  display: flex;
  flex-direction: column;
}

.mobile-sidebar-close {
  padding: 0.5rem;
  color: #475569;
  background: transparent;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: color 0.2s ease, background-color 0.2s ease, transform 0.2s ease;
}

.dark .mobile-sidebar-close {
  color: #94a3b8;
}

.mobile-sidebar-close .mobile-sidebar-close-icon {
  font-size: 1.75rem;
  line-height: 1;
  font-weight: 300;
  display: block;
}

.mobile-sidebar-close:hover {
  color: #0a3d62;
  background: rgba(10, 61, 98, 0.08);
  transform: scale(1.05);
}

.dark .mobile-sidebar-close:hover {
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.1);
}

/* Scrollable middle: nav + services */
.mobile-sidebar-scroll {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  touch-action: pan-y;
  padding: 0.875rem 1.25rem;
}

.mobile-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.mobile-sidebar-link {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.875rem;
  padding: 0.75rem 0.75rem;
  font-size: 1rem;
  font-weight: 500;
  color: #334155;
  text-decoration: none;
  border-radius: 0.5rem;
  min-height: 2.75rem;
  transform: translateX(12px);
  opacity: 0;
  transition:
    transform 0.3s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.3s ease,
    color 0.2s ease,
    background-color 0.2s ease;
}

.mobile-sidebar-link:focus-visible {
  outline: 2px solid #0a3d62;
  outline-offset: 2px;
}

.dark .mobile-sidebar-link {
  color: #cbd5e1;
}

.mobile-sidebar.is-open .mobile-sidebar-link {
  transform: translateX(0);
  opacity: 1;
  transition-delay: calc(60ms * var(--stagger-index, 0));
}

.mobile-sidebar-link:hover {
  color: #0a3d62;
  background: rgba(10, 61, 98, 0.08);
}

.dark .mobile-sidebar-link:hover {
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.1);
}

.mobile-sidebar-icon {
  font-size: 1.35rem;
  width: 1.5rem;
  min-width: 1.5rem;
  height: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #0a3d62;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.dark .mobile-sidebar-icon {
  color: #60a5fa;
}

.mobile-sidebar-link:hover .mobile-sidebar-icon {
  transform: scale(1.1);
}

/* Services section: label + dropdown open by default (vertical list, no grid) */
.mobile-sidebar-section {
  display: flex;
  flex-direction: column;
  width: 100%;
  margin-top: 0.625rem;
  margin-bottom: 0.375rem;
}

.mobile-sidebar-label {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: #0a3d62;
  margin: 0;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease;
}

.mobile-sidebar-label:hover {
  color: #0a3d62;
  background: rgba(10, 61, 98, 0.08);
}

.dark .mobile-sidebar-label {
  color: #60a5fa;
}

.dark .mobile-sidebar-label:hover {
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.1);
}

.mobile-sidebar-chevron {
  font-size: 1.35rem;
  width: 1.5rem;
  min-width: 1.5rem;
  height: 1.5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.25s cubic-bezier(0.22, 1, 0.36, 1);
  cursor: pointer;
  pointer-events: auto;
}

.mobile-sidebar-section[aria-expanded="true"] .mobile-sidebar-chevron {
  transform: rotate(180deg);
}

.mobile-sidebar-dropdown-open .mobile-sidebar-chevron {
  transform: rotate(0deg);
}

.mobile-sidebar-dropdown {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  gap: 0.125rem;
  padding-left: 0.75rem;
  margin-top: 0.375rem;
  margin-bottom: 0.5rem;
  border-left: 2px solid rgba(10, 61, 98, 0.2);
  width: 100%;
}

.mobile-sidebar-section[aria-expanded="false"] .mobile-sidebar-dropdown {
  display: none;
}

.mobile-sidebar-section[aria-expanded="true"] .mobile-sidebar-dropdown {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
}

.dark .mobile-sidebar-dropdown {
  border-left-color: rgba(96, 165, 250, 0.3);
}

.mobile-sidebar-sublink {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0.625rem;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 0.5rem 0.5rem 0.5rem 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: #475569;
  text-decoration: none;
  border-radius: 0.375rem;
  transform: translateX(8px);
  opacity: 0;
  transition:
    transform 0.28s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.28s ease,
    color 0.2s ease,
    background-color 0.2s ease;
  box-sizing: border-box;
}

.dark .mobile-sidebar-sublink {
  color: #94a3b8;
}

.mobile-sidebar.is-open .mobile-sidebar-sublink {
  transform: translateX(0);
  opacity: 1;
  transition-delay: calc(45ms * var(--stagger-subindex, 0));
}

.mobile-sidebar-sublink:hover {
  color: #0a3d62;
  background: rgba(10, 61, 98, 0.06);
}

.dark .mobile-sidebar-sublink:hover {
  color: #60a5fa;
  background: rgba(96, 165, 250, 0.08);
}

.mobile-sidebar-sublink-icon {
  font-size: 1.15rem;
  width: 1.25rem;
  min-width: 1.25rem;
  height: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #64748b;
  flex-shrink: 0;
}

.dark .mobile-sidebar-sublink-icon {
  color: #94a3b8;
}

.mobile-sidebar-sublink:hover .mobile-sidebar-sublink-icon {
  color: #0a3d62;
}

.dark .mobile-sidebar-sublink:hover .mobile-sidebar-sublink-icon {
  color: #60a5fa;
}

/* Footer: CTA always visible */
.mobile-sidebar-footer {
  flex-shrink: 0;
  padding: 1rem 1.25rem;
  padding-bottom: max(1rem, env(safe-area-inset-bottom));
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  background: #fff;
}

.dark .mobile-sidebar-footer {
  border-top-color: rgba(255, 255, 255, 0.08);
  background: #0f172a;
}

.mobile-sidebar-cta {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 1rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  text-align: center;
  color: #fff;
  background: linear-gradient(to right, #ea580c, #f97316);
  border-radius: 0.5rem;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.3);
  transform: translateY(10px);
  opacity: 0;
  transition:
    transform 0.35s cubic-bezier(0.22, 1, 0.36, 1),
    opacity 0.35s ease,
    background 0.2s ease,
    box-shadow 0.2s ease;
}

.mobile-sidebar.is-open .mobile-sidebar-cta {
  transform: translateY(0);
  opacity: 1;
  transition-delay: calc(60ms * var(--stagger-cta, 8));
}

.mobile-sidebar-cta:hover {
  background: linear-gradient(to right, #c2410c, #ea580c);
  box-shadow: 0 6px 20px rgba(234, 88, 12, 0.4);
}

.mobile-sidebar-cta-icon {
  font-size: 1.25rem;
  width: 1.25rem;
  min-width: 1.25rem;
  height: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  opacity: 0.95;
  flex-shrink: 0;
}

body.mobile-menu-open {
  overflow: hidden;
}