/* Mobile section navigator shared by every Azure Mastery content page. */
.section-nav {
  display: none;
}

@media (max-width: 768px) {
  body.section-nav-ready {
    padding-bottom: calc(82px + env(safe-area-inset-bottom));
  }

  .section-nav-ready .mobile-cta-bar {
    display: none;
  }

  .section-nav {
    position: fixed;
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    left: 10px;
    z-index: 950;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) auto;
    gap: 8px;
    padding: 8px;
    border: 1px solid var(--border-strong, rgba(255,255,255,.12));
    border-radius: 22px;
    background: rgba(7, 11, 22, .94);
    box-shadow: 0 18px 48px rgba(0,0,0,.36);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
  }

  .section-nav__menu-button,
  .section-nav__direction {
    min-width: 44px;
    min-height: 44px;
    padding: 0;
    border: 0;
    border-radius: 14px;
    background: rgba(255,255,255,.04);
    color: var(--text-primary, #f0f0f0);
    font: inherit;
    font-size: 24px;
    cursor: pointer;
  }

  .section-nav__menu-button {
    font-size: 0;
  }

  .section-nav__menu-button::before,
  .section-nav__menu-button::after,
  .section-nav__menu-button span {
    position: absolute;
    left: 13px;
    width: 18px;
    height: 2px;
    border-radius: 2px;
    background: currentColor;
    content: '';
  }

  .section-nav__menu-button { position: relative; }
  .section-nav__menu-button::before { top: 14px; }
  .section-nav__menu-button span { top: 21px; }
  .section-nav__menu-button::after { top: 28px; }

  .section-nav__track {
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr) 44px;
    align-items: center;
    min-width: 0;
    overflow: hidden;
    border-radius: 16px;
    background: rgba(255,255,255,.045);
  }

  .section-nav__direction:disabled {
    opacity: .28;
    cursor: default;
  }

  .section-nav__status {
    min-width: 0;
    padding: 0 4px;
    text-align: center;
  }

  .section-nav__label,
  .section-nav__progress {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .section-nav__label {
    color: var(--text-primary, #f0f0f0);
    font-family: 'Outfit', system-ui, sans-serif;
    font-size: 13px;
    font-weight: 650;
  }

  .section-nav__progress {
    margin-top: 1px;
    color: var(--text-muted, #808a96);
    font-size: 10px;
  }

  .section-nav__cta {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 17px;
    border-radius: 15px;
    background: linear-gradient(120deg, var(--azure-cyan, #50e6ff), var(--azure-blue, #2b88d8));
    color: #041018;
    font-family: 'Outfit', system-ui, sans-serif;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
  }

  .section-nav--cta-suppressed .section-nav__cta {
    display: none;
  }

  .section-nav__panel {
    position: absolute;
    right: 0;
    bottom: calc(100% + 8px);
    left: 0;
    max-height: min(52vh, 430px);
    overflow-y: auto;
    padding: 8px;
    border: 1px solid var(--border-strong, rgba(255,255,255,.12));
    border-radius: 18px;
    background: rgba(7, 11, 22, .98);
    box-shadow: 0 18px 48px rgba(0,0,0,.42);
  }

  .section-nav__panel[hidden] { display: none; }
  .section-nav__panel a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 12px;
    border-radius: 11px;
    color: var(--text-secondary, #8b95a5);
    font-size: 14px;
    text-decoration: none;
  }
  .section-nav__panel a[aria-current="true"] {
    background: rgba(80,230,255,.09);
    color: var(--azure-cyan, #50e6ff);
  }

  .section-nav button:focus-visible,
  .section-nav a:focus-visible {
    outline: 2px solid var(--azure-cyan, #50e6ff);
    outline-offset: 2px;
  }
}

html[data-theme="light"] .section-nav,
html[data-theme="light"] .section-nav__panel {
  background: rgba(248, 251, 255, .96);
  box-shadow: 0 18px 44px rgba(29, 53, 87, .18);
}

html[data-theme="light"] .section-nav__cta {
  color: #fff;
}

html[data-theme="light"] .section-nav__menu-button,
html[data-theme="light"] .section-nav__direction,
html[data-theme="light"] .section-nav__track {
  background: rgba(29, 53, 87, .06);
}

@media (max-width: 350px) {
  .section-nav { left: 6px; right: 6px; gap: 6px; padding: 6px; }
  .section-nav__cta { padding-inline: 12px; font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  .section-nav * { scroll-behavior: auto; }
}