@layer layout {
  .shell {
    display: flex;
    flex-direction: column;
    min-block-size: 100vh;
  }

  .wrap {
    inline-size: min(100% - (var(--dgv-gutter) * 2), var(--dgv-content));
    margin-inline: auto;
  }

  .wrap-reading {
    inline-size: min(100% - (var(--dgv-gutter) * 2), var(--dgv-reading));
    margin-inline: auto;
  }

  .status-strip {
    background: var(--dgv-forest-deep);
    color: var(--dgv-paper);
    font-size: var(--dgv-step--1);
  }

  .status-strip .wrap {
    display: flex;
    flex-wrap: wrap;
    gap: var(--dgv-space-2xs) var(--dgv-space-md);
    align-items: center;
    justify-content: space-between;
    padding-block: var(--dgv-space-2xs);
  }

  .status-strip .cycle {
    color: var(--dgv-chartreuse);
    font-weight: 600;
    letter-spacing: 0.04em;
  }

  .dgv-mast {
    position: relative;
    z-index: 20;
    background: var(--dgv-paper);
    border-block-end: 2px solid var(--dgv-border-ink);
  }

  .dgv-mast .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--dgv-space-md);
    padding-block: var(--dgv-space-sm);
  }

  .brand {
    display: flex;
    align-items: center;
    gap: var(--dgv-space-xs);
  }

  .brand img {
    inline-size: 46px;
    block-size: 46px;
    border: 2px solid var(--dgv-border-ink);
    border-radius: var(--dgv-radius-md);
    background: var(--dgv-chartreuse);
    object-fit: cover;
  }

  .brand .brand-name {
    font-family: var(--dgv-display);
    font-size: var(--dgv-step-2);
    line-height: 0.9;
    color: var(--dgv-ink);
  }

  .brand .brand-sub {
    display: block;
    font-family: var(--dgv-sans);
    font-size: 0.62rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--dgv-cyclamen-deep);
    font-weight: 600;
  }

  .vista-rail {
    display: flex;
    align-items: center;
    gap: var(--dgv-space-2xs);
  }

  .vista-rail a {
    padding: var(--dgv-space-2xs) var(--dgv-space-xs);
    border-radius: var(--dgv-radius-md);
    font-size: var(--dgv-step--1);
    font-weight: 600;
    min-block-size: 44px;
    display: inline-flex;
    align-items: center;
    transition: background var(--dgv-dur-fast) ease, color var(--dgv-dur-fast) ease;
  }

  .vista-rail a:hover {
    background: var(--dgv-forest);
    color: var(--dgv-chartreuse);
  }

  .vista-rail a[aria-current="page"] {
    background: var(--dgv-cyclamen);
    color: var(--dgv-paper);
  }

  .drawer-close {
    display: none;
  }

  .burger {
    display: none;
    align-items: center;
    gap: var(--dgv-space-2xs);
    min-block-size: 44px;
    min-inline-size: 44px;
    padding-inline: var(--dgv-space-xs);
    background: var(--dgv-ink);
    color: var(--dgv-paper);
    border: 2px solid var(--dgv-border-ink);
    border-radius: var(--dgv-radius-md);
    font-weight: 600;
    cursor: pointer;
  }

  .burger .bars {
    inline-size: 22px;
    block-size: 2px;
    background: var(--dgv-chartreuse);
    position: relative;
  }

  .burger .bars::before,
  .burger .bars::after {
    content: "";
    position: absolute;
    inset-inline: 0;
    block-size: 2px;
    background: var(--dgv-chartreuse);
  }

  .burger .bars::before {
    inset-block-start: -7px;
  }
  .burger .bars::after {
    inset-block-start: 7px;
  }

  main {
    flex: 1;
  }

  .folio-spread {
    display: grid;
    gap: var(--dgv-space-lg);
    padding-block: var(--dgv-space-xl);
  }

  .spread-7-5 {
    grid-template-columns: 1fr;
  }

  .spread-6-6 {
    grid-template-columns: 1fr;
  }

  .spread-8-4 {
    grid-template-columns: 1fr;
  }

  @media (min-width: 1080px) {
    .spread-7-5 {
      grid-template-columns: 7fr 5fr;
      align-items: center;
    }
    .spread-6-6 {
      grid-template-columns: 1fr 1fr;
      align-items: start;
    }
    .spread-8-4 {
      grid-template-columns: 8fr 4fr;
      align-items: start;
    }
  }

  @media (max-width: 860px) {
    .vista-rail {
      position: fixed;
      inset: 0;
      z-index: 60;
      flex-direction: column;
      align-items: stretch;
      justify-content: flex-start;
      gap: var(--dgv-space-2xs);
      background: var(--dgv-forest-deep);
      padding: calc(var(--dgv-space-2xl)) var(--dgv-gutter) var(--dgv-space-xl);
      overflow-y: auto;
      visibility: hidden;
      opacity: 0;
      transform: translateY(-8px);
      transition: opacity var(--dgv-dur-mid) ease, transform var(--dgv-dur-mid) ease,
        visibility var(--dgv-dur-mid) ease;
    }

    .vista-rail.is-open {
      visibility: visible;
      opacity: 1;
      transform: translateY(0);
    }

    .vista-rail a {
      color: var(--dgv-paper);
      font-size: var(--dgv-step-1);
      border-block-end: 1px solid rgba(245, 241, 228, 0.15);
      border-radius: 0;
    }

    .vista-rail a:hover,
    .vista-rail a[aria-current="page"] {
      background: transparent;
      color: var(--dgv-chartreuse);
    }

    .burger {
      display: inline-flex;
    }

    .drawer-close {
      display: inline-flex;
      position: fixed;
      inset-block-start: var(--dgv-space-sm);
      inset-inline-end: var(--dgv-gutter);
      z-index: 70;
    }
  }

  body.nav-locked {
    overflow: hidden;
  }
}

@layer overrides {
  .drawer-close {
    display: none;
  }

  @media (max-width: 860px) {
    .drawer-close {
      display: inline-flex;
    }
  }

  /* Custom logo override to prevent cropping */
  .brand img.logo-img {
    object-fit: contain !important;
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    width: auto !important;
    height: 46px !important;
    max-width: 100% !important;
  }

  /* Search styles */
  .header-search-container {
    position: relative;
    margin-inline: var(--dgv-space-xs);
    flex: 1;
    max-width: 320px;
    min-width: 120px;
    z-index: 100;
  }
  
  .search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
  }
  
  .header-search-input {
    width: 100%;
    padding: var(--dgv-space-3xs) var(--dgv-space-md) var(--dgv-space-3xs) var(--dgv-space-xs);
    padding-inline-end: 2.5rem;
    border: 2px solid var(--dgv-border-ink);
    border-radius: var(--dgv-radius-md);
    background: var(--dgv-card);
    color: var(--dgv-ink);
    font-size: var(--dgv-step--1);
    transition: border-color var(--dgv-dur-fast) ease, box-shadow var(--dgv-dur-fast) ease;
  }
  
  .header-search-input:focus {
    outline: none;
    border-color: var(--dgv-cyclamen);
    box-shadow: 0 0 0 3px var(--dgv-rose);
  }
  
  .search-icon {
    position: absolute;
    right: var(--dgv-space-2xs);
    color: var(--dgv-ink-soft);
    pointer-events: none;
  }
  
  .search-dropdown {
    position: absolute;
    top: calc(100% + var(--dgv-space-3xs));
    left: 0;
    right: 0;
    background: var(--dgv-card);
    border: 2px solid var(--dgv-border-ink);
    border-radius: var(--dgv-radius-md);
    box-shadow: var(--dgv-shadow-md);
    max-height: 300px;
    overflow-y: auto;
    z-index: 110;
    display: flex;
    flex-direction: column;
  }
  
  .search-dropdown[hidden] {
    display: none;
  }
  
  .search-results-list {
    display: flex;
    flex-direction: column;
    padding: var(--dgv-space-3xs);
  }
  
  .search-result-item {
    padding: var(--dgv-space-2xs);
    border-radius: var(--dgv-radius-sm);
    transition: background var(--dgv-dur-fast) ease;
    display: flex;
    flex-direction: column;
    gap: 2px;
    color: var(--dgv-ink);
    text-decoration: none;
  }
  
  .search-result-item:hover,
  .search-result-item:focus {
    background: var(--dgv-forest);
    color: var(--dgv-chartreuse);
    outline: none;
  }
  
  .search-result-title {
    font-weight: 600;
    font-size: var(--dgv-step--1);
  }
  
  .search-result-desc {
    font-size: 0.75rem;
    opacity: 0.8;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .search-no-results {
    padding: var(--dgv-space-xs);
    text-align: center;
    font-size: var(--dgv-step--1);
    color: var(--dgv-ink-soft);
  }

  /* Floating Theme Switcher button */
  .theme-switcher-btn {
    position: fixed;
    bottom: var(--dgv-space-md, 1.5rem);
    left: var(--dgv-space-md, 1.5rem);
    z-index: 1000;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--dgv-ink);
    color: var(--dgv-paper);
    border: 2px solid var(--dgv-border-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    transition: transform var(--dgv-dur-fast, 140ms) ease, background-color var(--dgv-dur-fast, 140ms) ease, color var(--dgv-dur-fast, 140ms) ease;
  }

  .theme-switcher-btn:hover {
    transform: scale(1.1);
    background: var(--dgv-cyclamen);
    color: #fff;
  }

  html[data-theme="dark"] .sun-icon {
    display: block;
  }
  html[data-theme="dark"] .moon-icon {
    display: none;
  }
  html:not([data-theme="dark"]) .sun-icon {
    display: none;
  }
  html:not([data-theme="dark"]) .moon-icon {
    display: block;
  }

  /* Dark mode color scheme overrides */
  html[data-theme="dark"] {
    --dgv-paper: #121614;
    --dgv-paper-deep: #0a0d0c;
    --dgv-card: #181f1b;
    --dgv-ink: #f0f4f1;
    --dgv-ink-soft: #b8c4bd;
    --dgv-forest: #2f5640;
    --dgv-forest-deep: #0e1210;
    --dgv-chartreuse: #c6f24d;
    --dgv-chartreuse-deep: #a4d321;
    --dgv-cyclamen: #ff5290;
    --dgv-cyclamen-deep: #d9326e;
    --dgv-rose: #3a1e28;
    --dgv-border: #2c3530;
    --dgv-border-ink: #f0f4f1;
  }
}