/* meetLab — mobile.css
 * Single breakpoint at 720px. Desktop unchanged above that.
 * Extends colors_and_type.css + papers.css. No new tokens. */

.m-only { display: none; }

@media (max-width: 860px) {

  .paper-head,
  .paper-body,
  .paper-foot,
  .mech-strip,
  .papers-page,
  .page {
    max-width: 100%;
    overflow-x: hidden;
  }

  /* ─────────── Nav ─────────── */
  .nav { padding: 10px 20px; }
  .nav-left { gap: 0; flex: 1; min-width: 0; }
  .nav-links { display: none; }
  .nav-right { gap: 8px; }
  .nav-right a { display: none; }
  .nav-right .btn-book { padding: 8px 14px; font-size: 13px; }

  .logo-menu {
    position: fixed;
    top: auto;
    left: 0; right: 0;
    min-width: 0; width: 100%;
    max-height: calc(100vh - 56px);
    overflow-y: auto;
    border-left: 0; border-right: 0;
    box-shadow: 0 8px 24px rgba(20,19,16,0.12);
  }
  .logo-menu[data-open="true"] { display: block; }
  .logo-menu .mitem {
    min-height: 44px;
    padding: 12px;
    grid-template-columns: 88px 1fr auto;
  }

  .m-only { display: block; }
  a.mitem.m-only { display: grid; }

  /* ─────────── Hero (index.html) ─────────── */
  .hero { padding: 32px 20px 56px; }
  .hero-header {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-bottom: 32px;
  }
  h1.display {
    font-size: clamp(36px, 9vw, 52px);
    margin-top: 18px;
  }
  .eyebrow { flex-wrap: wrap; row-gap: 8px; }
  .lede { font-size: 16px; margin-top: 20px; }
  .actions { flex-direction: column; gap: 10px; margin-top: 28px; }
  .actions .btn { width: 100%; justify-content: space-between; }
  .spec-sheet { padding-top: 10px; border-top: 1px solid var(--ml-border); }
  .spec-row { grid-template-columns: 88px minmax(0, 1fr); font-size: 11px; padding: 8px 0; gap: 10px; }
  .spec-v { word-break: break-word; }

  .shelf-header { flex-direction: column; align-items: flex-start; gap: 8px; padding: 32px 0 20px; }
  .shelf-header h2 { font-size: 26px; }
  .shelf-meta { font-size: 11px; }

  .shelf { grid-template-columns: 1fr; }
  .shelf .cell {
    min-height: 0;
    padding: 40px 22px 22px;
    border-right: 1px solid var(--ml-border);
  }
  .shelf .cell + .cell { border-top: 0; }
  .stage {
    min-height: 280px;
    padding: 16px 0 20px;
  }
  .reel-stack {
    width: min(100%, 260px);
    height: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 10px 0 26px;
  }
  .reel-a, .reel-b {
    position: static;
    transform: none;
    width: 100px;
    height: 100px;
    margin: 0 auto;
  }
  .surface-tag { position: static; transform: none; text-align: center; }

  .corner-mark.cm-bl, .corner-mark.cm-br { display: none; }
  .corner-mark.cm-tl { left: 20px; top: 16px; font-size: 9px; }
  .corner-mark.cm-tr { right: 20px; top: 16px; font-size: 9px; }

  .finer { grid-template-columns: 1fr 1fr; gap: 18px; padding: 20px 0; margin-top: 40px; }
  .finer-v { font-size: 12px; }

  .mech-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 20px;
    font-size: 10px;
    margin-top: 40px;
  }

  /* ─────────── Glossary ─────────── */
  .page { padding: 32px 20px 80px; }
  h1.title { font-size: clamp(36px, 9vw, 52px); }
  .controls {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-top: 32px;
  }
  .search { width: 100%; }
  .search .k:last-child { display: none; }
  .filter-group {
    display: flex;
    overflow-x: auto;
    gap: 6px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }
  .filter-group .chip { flex: 0 0 auto; min-height: 36px; }
  .idx {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 4px;
  }
  .idx a { flex: 0 0 auto; }
  .entry {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 20px 0;
  }
  .entry .meta { align-items: flex-start; flex-direction: row; flex-wrap: wrap; gap: 8px; }
  .body .sig {
    display: block;
    overflow-x: auto;
    white-space: nowrap;
    max-width: 100%;
    font-size: 11px;
  }
  .term { font-size: 20px; }
  .term-mono { font-size: 16px; }

  .foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    font-size: 10px;
  }

  /* ─────────── Papers index ─────────── */
  .papers-page { padding: 24px 20px 80px; }
  .papers-hero {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }
  .papers-hero h1 { font-size: clamp(36px, 9vw, 76px); }
  .papers-hero .lede { font-size: 16px; }
  .map-block {
    grid-template-columns: 1fr;
    gap: 4px;
    padding: 20px;
    font-size: 12px;
  }
  .map-block .mk { padding-top: 10px; }
  .papers-grid { margin-top: 36px; }
  .papers-section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-top: 28px;
  }
  .papers-section-head .meta { white-space: normal; line-height: 1.5; }
  .papers-hero .summary dl { grid-template-columns: 1fr; }
  .papers-section-head h2 { font-size: 22px; }
  .paper-row {
    grid-template-columns: 1fr auto;
    grid-template-areas:
      "pid pid"
      "title title"
      "desc desc"
      "tag tag"
      "status arrow";
    padding: 18px 4px 18px 4px;
    gap: 8px;
  }
  .paper-row .pid     { grid-area: pid; }
  .paper-row > div    { grid-column: 1 / -1; }
  .paper-row .ptitle  { font-size: 16px; }
  .paper-row .pdesc   { font-size: 13px; }
  .paper-row .ptag    { grid-area: tag; word-break: break-all; font-size: 10px; }
  .paper-row .pstatus { grid-area: status; justify-self: start; }
  .paper-row .parr    { grid-area: arrow; justify-self: end; }

  /* ─────────── Paper detail + memos ─────────── */
  .paper-head { padding: 32px 20px 28px; }
  .paper-title { font-size: clamp(28px, 7.5vw, 40px); }
  .paper-tagline { font-size: 15px; margin-top: 16px; }

  .paper-meta {
    grid-template-columns: 1fr 1fr;
    gap: 0;
    border-top: 1px solid var(--ml-border);
    border-left: 1px solid var(--ml-border);
    padding-top: 0;
  }
  .paper-meta .cell {
    padding: 12px 14px;
    border-right: 1px solid var(--ml-border);
    border-bottom: 1px solid var(--ml-border);
    background: var(--ml-paper-2);
  }
  .paper-meta .v { word-break: break-word; }

  .paper-body {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 20px 40px;
  }
  .paper-body > *,
  .prose { min-width: 0; }

  .toc {
    position: sticky; top: 56px; z-index: 30;
    margin: 0 -20px; padding: 0;
    background: var(--ml-paper);
    border-top: 1px solid var(--ml-border);
    border-bottom: 1px solid var(--ml-border);
  }
  .toc-head {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 20px; margin: 0; border-bottom: 0;
    cursor: pointer;
  }
  .toc[open] .toc-head { border-bottom: 1px solid var(--ml-ink); }
  .toc ol { padding: 4px 8px 12px; }
  .toc li a {
    padding: 12px;
    min-height: 44px;
    grid-template-columns: 36px 1fr;
    margin-left: 0;
    border-left: 0;
    padding-left: 12px;
  }
  .toc li a.active { border-left: 0; background: var(--ml-paper-2); }
  .toc:not([open]) ol { display: none; }

  .toc-current {
    display: flex; align-items: center; gap: 6px;
    font-family: var(--ml-mono); font-size: 11px;
    font-weight: 500; color: var(--ml-ink);
    text-transform: none; letter-spacing: 0.04em;
  }
  .toc-current .toc-chev { color: var(--ml-fg-mute); transition: transform 140ms var(--ml-ease); }
  .toc[open] .toc-current .toc-chev { transform: rotate(180deg); color: var(--ml-ink); }

  .sec { padding-top: 32px; scroll-margin-top: 110px; }
  .sec-rule { grid-template-columns: 30px 1fr; gap: 12px; }
  .sec-num { font-size: 14px; }
  .sec-h { font-size: 22px; letter-spacing: -0.01em; }

  .prose { font-size: 15px; }
  .prose p { font-size: 15px; }
  .prose ul li, .prose ol li { font-size: 15px; }
  .prose,
  .prose p,
  .prose li,
  .prose .dv,
  .prose .dk {
    overflow-wrap: anywhere;
    word-break: normal;
  }
  .prose pre, .prose .block {
    font-size: 11px;
    padding: 14px;
    margin: 18px 0;
    border-left: 0; border-right: 0;
    border-radius: 0;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: pre;
  }
  .prose table {
    font-size: 13px;
    display: block;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
  .prose thead th, .prose tbody td { padding: 10px 8px; }

  .decision { grid-template-columns: 1fr; }
  .decision .dk { border-right: 0; border-bottom: 1px solid var(--ml-border); }

  .mech {
    flex-direction: column; align-items: flex-start;
    padding: 18px 20px; gap: 6px;
    margin: 24px -20px;
    border-left: 0; border-right: 0;
  }
  .mech .label { position: static; margin-bottom: 8px; top: 0; }

  .margin { display: contents; }
  .mg-card { margin: 20px 0; }

  .pullquote { font-size: 16px; padding: 16px 0; }

  .paper-foot {
    grid-template-columns: 1fr;
    padding: 32px 20px 64px;
    gap: 10px;
  }
  .paper-foot .right { text-align: left; }
  .paper-foot .right .dir { flex-direction: row; }

  /* memo-specific */
  .memo-stamp {
    position: static !important;
    display: inline-flex;
    align-self: flex-start;
    margin: 8px 0 12px;
    transform: none !important;
    top: auto !important;
    right: auto !important;
    font-size: 9px;
    letter-spacing: 0.12em;
    padding: 4px 8px;
    border-width: 1px;
  }
}

@media (min-width: 861px) {
  .toc-current { display: none; }
}