:root {
    --ink: #1a1714;
    --ink-mid: #3d3830;
    --ink-soft: #7a726a;
    --ink-faint: #c4bdb5;
    --paper: #f7f4ef;
    --paper-warm: #ede8e0;
    --paper-card: #faf8f4;
    --gold: #b8924a;
    --gold-light: #d4aa6a;
    --gold-dim: #8a6e38;
    --rule: rgba(26,23,20,0.12);
    --shadow: rgba(26,23,20,0.07);
    --controls-bg: rgba(247,244,239,0.92);
    --toggle-bg: #e8e3da;
    --toggle-knob: #fff;
  }

  [data-theme="dark"] {
    --ink: #e8e2d9;
    --ink-mid: #c8c0b4;
    --ink-soft: #7a7268;
    --ink-faint: #4a4540;
    --paper: #141210;
    --paper-warm: #1c1916;
    --paper-card: #1a1714;
    --gold: #c49a52;
    --gold-light: #d4aa6a;
    --gold-dim: #c49a52;
    --rule: rgba(232,226,217,0.1);
    --shadow: rgba(0,0,0,0.3);
    --controls-bg: rgba(20,18,16,0.92);
    --toggle-bg: #3a3530;
    --toggle-knob: #c49a52;
  }

  *, *::before, *::after { transition: background-color 0.25s ease, border-color 0.25s ease, color 0.2s ease; }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  html { scroll-behavior: smooth; }

  body {
    background: var(--paper);
    color: var(--ink);
    font-family: 'Outfit', sans-serif;
    font-weight: 300;
    min-height: 100vh;
    overflow-x: hidden;
  }

  /* ── GRAIN OVERLAY ── */
  body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 9999;
    opacity: 0.6;
  }

  /* ── HEADER ── */
  header {
    position: relative;
    padding: 5rem 4rem 4rem;
    border-bottom: 1px solid var(--rule);
    overflow: hidden;
  }

  header::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--gold), transparent);
  }

  .header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: end;
    gap: 2rem;
  }

  .catalog-label {
    font-family: 'Outfit', sans-serif;
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 0.75rem;
  }

  h1 {
    font-family: 'Cormorant Garamond', serif;
    font-weight: 300;
    font-size: clamp(3rem, 6vw, 5.5rem);
    line-height: 0.95;
    color: var(--ink);
    letter-spacing: -0.01em;
  }

  h1 em {
    font-style: italic;
    color: var(--gold-dim);
  }

  .header-meta {
    text-align: right;
  }

  .stat-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 3rem;
    font-weight: 300;
    color: var(--ink);
    line-height: 1;
    display: block;
  }

  .stat-label {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--ink-soft);
    display: block;
    margin-top: 0.25rem;
  }

  /* ── SEARCH & FILTER BAR ── */
  .controls {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--controls-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--rule);
    padding: 0.85rem 4rem;
  }

  .controls-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }

  .search-wrap {
    position: relative;
    flex: 1;
    max-width: 420px;
  }

  .search-icon {
    position: absolute;
    left: 0.85rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--ink-soft);
    pointer-events: none;
  }

  input[type="search"] {
    width: 100%;
    padding: 0.55rem 1rem 0.55rem 2.4rem;
    border: 1px solid var(--rule);
    border-radius: 4px;
    background: var(--paper-card);
    font-family: 'Outfit', sans-serif;
    font-size: 0.82rem;
    font-weight: 400;
    color: var(--ink);
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
  }

  input[type="search"]:focus { border-color: var(--gold); }
  input[type="search"]::placeholder { color: var(--ink-faint); }

  .results-count {
    font-size: 0.75rem;
    color: var(--ink-soft);
    letter-spacing: 0.05em;
    white-space: nowrap;
    margin-left: auto;
  }

  .results-count span {
    color: var(--gold);
    font-weight: 500;
  }

  /* ── MAIN LAYOUT ── */
  main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 4rem 6rem;
  }

  /* ── CATEGORY FILTER PILLS ── */
  .cat-filters {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    align-items: center;
  }

  .cat-pill {
    font-family: 'Outfit', sans-serif;
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-soft);
    background: transparent;
    border: 1px solid var(--rule);
    border-radius: 20px;
    padding: 0.25em 0.85em;
    cursor: pointer;
    transition: color 0.15s, background 0.15s, border-color 0.15s;
    white-space: nowrap;
  }

  .cat-pill:hover { border-color: var(--gold); color: var(--gold); }
  .cat-pill.active { background: var(--gold); border-color: var(--gold); color: var(--paper); }

  /* ── CATEGORY BLOCK ── */
  .category-block { margin-bottom: 4rem; }
  .category-block.hidden { display: none; }

  .category-heading {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 2rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--rule);
  }

  .category-heading::before {
    content: '';
    display: block;
    width: 4px;
    height: 1.8rem;
    background: var(--gold);
    border-radius: 2px;
    flex-shrink: 0;
  }

  .category-name {
    font-family: 'Cormorant Garamond', serif;
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 400;
    font-style: italic;
    color: var(--ink);
    line-height: 1;
  }

  .category-tally {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ink-soft);
    margin-left: auto;
    white-space: nowrap;
  }

  /* ── SERIES SECTION ── */
  .series-section {
    margin-bottom: 2.5rem;
    animation: fadeUp 0.5s ease both;
  }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  .series-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.6rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--rule);
  }

  .series-name {
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.45rem;
    font-weight: 400;
    letter-spacing: 0.01em;
    color: var(--ink);
    line-height: 1.2;
  }

  .series-count {
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
    background: rgba(184, 146, 74, 0.1);
    padding: 0.15em 0.6em;
    border-radius: 2px;
    border: 1px solid rgba(184, 146, 74, 0.25);
    white-space: nowrap;
  }

  /* ── TITLE ROWS ── */
  .titles-list { list-style: none; }

  .title-item {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: baseline;
    gap: 1.5rem;
    padding: 0.4rem 0;
    border-bottom: 1px solid rgba(26,23,20,0.06);
    transition: background 0.15s;
  }

  .title-item:last-child { border-bottom: none; }

  .title-item:hover { background: rgba(184, 146, 74, 0.03); }

  .title-link {
    font-size: 0.88rem;
    font-weight: 400;
    color: var(--ink-mid);
    text-decoration: none;
    line-height: 1.5;
    transition: color 0.15s;
    padding: 0.1rem 0.4rem;
    margin-left: -0.4rem;
    border-radius: 2px;
  }

  .title-link:hover { color: var(--gold-dim); }

  .title-link::after {
    content: ' ↗';
    font-size: 0.7em;
    opacity: 0;
    transition: opacity 0.15s;
    color: var(--gold);
  }

  .title-item:hover .title-link::after { opacity: 1; }

  .asin-code {
    font-family: 'Outfit', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--ink-faint);
    white-space: nowrap;
    transition: color 0.15s;
  }

  .title-item:hover .asin-code { color: var(--ink-soft); }

  /* ── NO RESULTS ── */
  .no-results {
    display: none;
    text-align: center;
    padding: 5rem 2rem;
    color: var(--ink-soft);
  }

  .no-results.visible { display: block; }

  .no-results-title {
    font-family: 'Cormorant Garamond', serif;
    font-size: 2rem;
    font-weight: 300;
    font-style: italic;
    margin-bottom: 0.5rem;
    color: var(--ink-faint);
  }

  /* ── FOOTER ── */
  footer {
    border-top: 1px solid var(--rule);
    padding: 2rem 4rem;
    text-align: center;
  }

  footer::before {
    content: '';
    display: block;
    width: 60px;
    height: 1px;
    background: var(--gold);
    margin: 0 auto 1.5rem;
  }

  .footer-text {
    font-size: 0.72rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }

  /* ── HIDDEN (filtered out) ── */
  .series-section.hidden { display: none; }
  .title-item.hidden { display: none; }

  /* ── DARK MODE TOGGLE ── */
  .theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    border: none;
    background: none;
    padding: 0;
    flex-shrink: 0;
  }

  .toggle-label {
    font-size: 0.68rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--ink-soft);
    user-select: none;
  }

  .toggle-pill {
    position: relative;
    width: 36px;
    height: 20px;
    background: var(--toggle-bg);
    border-radius: 10px;
    flex-shrink: 0;
    transition: background 0.25s ease;
  }

  .toggle-pill::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--toggle-knob);
    transition: transform 0.25s ease, background 0.25s ease;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  }

  [data-theme="dark"] .toggle-pill::after {
    transform: translateX(16px);
  }

  .toggle-icon {
    font-size: 0.85rem;
    line-height: 1;
    color: var(--ink-soft);
    user-select: none;
    transition: color 0.2s;
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    header, .controls, main, footer { padding-left: 1.5rem; padding-right: 1.5rem; }
    header { padding-top: 3rem; }
    .header-inner { grid-template-columns: 1fr; }
    .header-meta { text-align: left; }
    main { padding-top: 2rem; }
  }