/* ==========================================================================\n   PETRAGON — Mobile navigation polish\n   Opaque, high-contrast navigation sheet for both light and dark themes.\n   ========================================================================== */

.mobile-nav-backdrop {
  display: none;
}

@media (max-width: 1080px) {
  body.nav-open {
    overflow: hidden;
  }

  .site-navbar {
    top: max(14px, env(safe-area-inset-top));
    width: min(1220px, calc(100% - 28px));
    z-index: 1200;
  }

  .nav-inner {
    min-height: 72px;
    padding: 10px 12px;
    border-radius: 24px;
    background: var(--surface) !important;
    border: 1px solid var(--border-strong);
    box-shadow: 0 18px 54px rgba(var(--shadow-rgb), 0.20);
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }

  .nav-logo {
    min-width: 0;
  }

  .nav-brand {
    font-size: 1rem;
  }

  .nav-toggle {
    width: 50px;
    height: 50px;
    border-radius: 16px;
    border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--border));
    background: color-mix(in srgb, var(--accent) 10%, var(--surface));
    color: var(--accent-dark);
    box-shadow: none;
  }

  body.nav-open .nav-toggle {
    background: color-mix(in srgb, var(--accent) 15%, var(--surface));
    border-color: color-mix(in srgb, var(--accent) 42%, var(--border));
  }

  .nav-menu {
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    gap: 7px;
    padding: 14px;
    border-radius: 26px;
    background: var(--surface) !important;
    border: 1px solid var(--border-strong);
    box-shadow: 0 30px 90px rgba(var(--shadow-rgb), 0.34);
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
    max-height: 0;
    overscroll-behavior: contain;
    scrollbar-width: none;
  }

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

  .nav-menu.active {
    max-height: calc(100dvh - max(118px, env(safe-area-inset-top)));
    padding-bottom: max(14px, env(safe-area-inset-bottom));
  }

  .nav-menu > * {
    flex: 0 0 auto;
  }

  .nav-link,
  .nav-cta,
  .nav-lang,
  .nav-theme {
    min-height: 54px;
    width: 100%;
    border-radius: 17px;
    padding: 0 18px;
    font-size: 0.96rem;
  }

  .nav-link {
    justify-content: flex-start;
    background: transparent;
    border: 1px solid transparent;
  }

  .nav-link:hover,
  .nav-link:focus-visible {
    background: color-mix(in srgb, var(--accent) 8%, var(--surface));
    border-color: color-mix(in srgb, var(--accent) 15%, var(--border));
    color: var(--text);
  }

  .site-navbar .nav-link.active-page {
    color: var(--accent-dark);
    background: color-mix(in srgb, var(--accent) 12%, var(--surface)) !important;
    border-color: color-mix(in srgb, var(--accent) 18%, var(--border));
  }

  .nav-cta {
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: var(--on-accent);
    border: 1px solid color-mix(in srgb, var(--accent) 60%, transparent);
    box-shadow: 0 12px 28px rgba(var(--accent-rgb), 0.20);
  }

  .nav-lang {
    justify-content: center;
    background: color-mix(in srgb, var(--accent) 7%, var(--surface));
    border: 1px solid var(--border-strong);
    box-shadow: none;
    color: var(--accent-dark);
  }

  /* Mobile theme button: one icon + one clean label. The old screen-reader
     label stays hidden so it can never collide with the SVG again. */
  .nav-theme {
    display: flex !important;
    align-items: center;
    justify-content: center;
    gap: 10px;
    height: 54px;
    color: var(--text);
    background: var(--surface);
    border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border));
    box-shadow: none;
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
  }

  .nav-theme:hover {
    transform: none;
    background: color-mix(in srgb, var(--accent) 7%, var(--surface));
  }

  .nav-theme svg {
    position: static !important;
    width: 20px;
    height: 20px;
    flex: 0 0 20px;
    opacity: 1 !important;
    transform: none !important;
  }

  [data-theme="light"] .nav-theme .icon-sun,
  [data-theme="dark"] .nav-theme .icon-moon {
    display: none !important;
  }

  [data-theme="light"] .nav-theme .icon-moon,
  [data-theme="dark"] .nav-theme .icon-sun {
    display: block !important;
  }

  .nav-theme .sr-only {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
  }

  .nav-theme::after {
    font: 800 0.95rem/1 "Manrope", system-ui, sans-serif;
    letter-spacing: 0;
  }

  html[lang="el"][data-theme="light"] .nav-theme::after { content: "Σκούρο θέμα"; }
  html[lang="el"][data-theme="dark"] .nav-theme::after  { content: "Φωτεινό θέμα"; }
  html[lang="en"][data-theme="light"] .nav-theme::after { content: "Dark mode"; }
  html[lang="en"][data-theme="dark"] .nav-theme::after  { content: "Light mode"; }

  .mobile-nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    background: rgba(15, 20, 25, 0.34);
    -webkit-backdrop-filter: blur(7px) saturate(0.9);
    backdrop-filter: blur(7px) saturate(0.9);
    transition: opacity 0.22s ease, visibility 0.22s ease;
  }

  [data-theme="dark"] .mobile-nav-backdrop {
    background: rgba(5, 8, 12, 0.62);
  }

  body.nav-open .mobile-nav-backdrop {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

@media (max-width: 520px) {
  .site-navbar {
    width: calc(100% - 20px);
  }

  .nav-inner {
    border-radius: 22px;
  }

  .nav-menu {
    border-radius: 24px;
    padding: 12px;
  }

  .nav-link,
  .nav-cta,
  .nav-lang,
  .nav-theme {
    min-height: 52px;
    border-radius: 16px;
  }
}