/* 3GPP Scout design system: "science textbook" pages (meeting pages, meeting index).
   Tokens follow docs/DESIGN.md in the Scout repo. Everything except tokens and the font fallback is scoped under .tb. */

@font-face{font-family:"Inter Fallback";src:local("Arial");ascent-override:90.2%;descent-override:22.48%;line-gap-override:0%;size-adjust:107.4%}

:root{
  --tb-green:#10b981;--tb-green-dark:#047857;--tb-green-ink:#064e3b;
  --tb-blue:#0ea5e9;--tb-blue-dark:#0369a1;
  --tb-amber:#f59e0b;--tb-amber-dark:#92400e;
  --tb-ink:#111827;--tb-text:#1f2937;--tb-muted:#4b5563;--tb-caption:#6b7280;--tb-rule:#e5e7eb;--tb-soft:#f9fafb;
  --tb-s1:8px;--tb-s2:16px;--tb-s3:24px;--tb-s4:32px;--tb-s6:48px;
  --tb-radius:12px;--tb-col:38.5rem;
}
html body{font-family:"Inter","Inter Fallback",system-ui,-apple-system,sans-serif}

.tb{max-width:calc(var(--tb-col) + 17rem + 112px);margin:0 auto;padding:var(--tb-s2) var(--tb-s3) var(--tb-s6);color:var(--tb-text);font-size:16px;line-height:1.6}
.tb *{box-sizing:border-box}
.tb p{margin:0 0 var(--tb-s1)}
.tb a{color:var(--tb-green-dark)}
.tb a:focus-visible,.tb summary:focus-visible{outline:3px solid var(--tb-blue);outline-offset:2px;border-radius:4px}

/* Header: badge and status, one title, one meta line */
.tb-head{max-width:var(--tb-col);margin:0 0 var(--tb-s4)}
.tb-crumbs{font-size:13px;color:var(--tb-caption);margin:0 0 var(--tb-s2)!important}
.tb-crumbs a{text-decoration:none}.tb-crumbs a:hover{text-decoration:underline}
.tb-badges{display:flex;flex-wrap:wrap;gap:var(--tb-s1);align-items:center;margin:0 0 var(--tb-s1)!important}
.tb h1{font-size:32px;line-height:1.2;font-weight:700;color:var(--tb-ink);letter-spacing:-.01em;margin:0 0 var(--tb-s2)}
.tb-meta{display:flex;flex-wrap:wrap;gap:4px 0;font-size:15px;color:var(--tb-muted)}
.tb-meta span{white-space:nowrap}.tb-meta span+span::before{content:"\00B7";margin:0 10px;color:#9ca3af}
.tb-lede{font-size:18px;color:var(--tb-muted);line-height:1.55}

/* Badges and chips */
.tb-badge{display:inline-block;font-size:13px;font-weight:700;color:var(--tb-ink);background:#fff;border:1px solid #d1d5db;border-radius:6px;padding:2px 10px;line-height:1.5}
.tb-chip{display:inline-block;font-size:12px;font-weight:600;line-height:1.5;border-radius:999px;padding:2px 10px;border:1px solid;white-space:nowrap;vertical-align:middle}
.tb-chip-agreed{background:#ecfdf5;color:var(--tb-green-dark);border-color:#a7f3d0}
.tb-chip-wa{background:#f0f9ff;color:var(--tb-blue-dark);border-color:#bae6fd}
.tb-chip-open{background:#fffbeb;color:var(--tb-amber-dark);border-color:#fde68a}
.tb-chip-prop{background:#f3f4f6;color:#374151;border-color:#e5e7eb}

/* Page stage (not a status): filled label */
.tb-stage{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#fff;border-radius:6px;padding:2px 10px;line-height:1.5;white-space:nowrap}
.tb-stage::before{content:"";width:7px;height:7px;border-radius:999px}
.tb-stage{background:var(--tb-ink)}.tb-stage-preview::before{background:#d1d5db}.tb-stage-live::before{background:#f87171}.tb-stage-final::before{background:#34d399}

/* Two-column layout: readable body column, sticky contents and actions on desktop */
.tb-grid{display:block}
.tb-main{max-width:var(--tb-col);min-width:0}
.tb-side{margin-top:var(--tb-s6)}
.tb-toc{display:none}
@media (min-width:1080px){
  .tb-grid{display:grid;grid-template-columns:minmax(0,var(--tb-col)) 17rem;gap:var(--tb-s6) 64px;align-items:start}
  .tb-side{position:sticky;top:96px;margin-top:0}
  .tb-toc{display:block;margin-bottom:var(--tb-s3)}
}

/* Labels, callouts */
.tb-label{font-size:12px!important;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--tb-muted);margin:0 0 var(--tb-s1)!important}
.tb-callout{border-left:4px solid;border-radius:var(--tb-radius);padding:20px var(--tb-s3);margin:0 0 var(--tb-s6)}
.tb-callout-glance{background:rgba(16,185,129,.07);border-color:var(--tb-green)}
.tb-callout-glance .tb-label{color:var(--tb-green-dark)}
.tb-callout-open{background:rgba(245,158,11,.08);border-color:var(--tb-amber);margin-bottom:0}
.tb-callout-open .tb-label{color:var(--tb-amber-dark)}
.tb-callout ol,.tb-callout ul{margin:0;padding-left:1.4em}
.tb-callout li{margin:0 0 var(--tb-s2)}.tb-callout li:last-child{margin-bottom:0}
.tb-callout li::marker{font-weight:700;color:var(--tb-green-dark)}
.tb-callout-open li::marker{color:var(--tb-amber-dark)}
.tb-callout .tb-cap{color:var(--tb-muted)}
.tb-callout > p:last-child{margin-bottom:0}
.tb-callout-glance > p{font-size:17px}

/* Numbered sections */
.tb-section{margin:0 0 var(--tb-s6)}
.tb h2{display:flex;align-items:center;gap:12px;font-size:24px;line-height:1.25;font-weight:650;color:var(--tb-ink);margin:0 0 var(--tb-s3);padding-bottom:12px;border-bottom:2px solid #d1fae5;scroll-margin-top:96px}
.tb-num{display:inline-flex;flex:none;align-items:center;justify-content:center;width:32px;height:32px;border-radius:999px;background:var(--tb-green-dark);color:#fff;font-size:15px;font-weight:700}
.tb h3{font-size:18px;line-height:1.35;font-weight:650;color:var(--tb-ink);margin:var(--tb-s1) 0}

/* Items: chip, bold headline, one sentence, quote, caption */
.tb-item{padding:0 0 var(--tb-s3);margin:0 0 var(--tb-s3);border-bottom:1px solid var(--tb-rule)}
.tb-item:last-of-type{border-bottom:0}
.tb-sub{margin:var(--tb-s2) 0 0}
.tb-sub > .tb-chip{margin-bottom:6px}
.tb-co{font-weight:650;color:var(--tb-ink);margin:var(--tb-s2) 0 4px!important}
.tb-quote{margin:12px 0 0;padding:12px var(--tb-s2);background:var(--tb-soft);border-left:3px solid #9ca3af;border-radius:8px}
.tb-quote::before{content:"Quote";display:block;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--tb-muted);margin-bottom:4px}
.tb-quote blockquote{margin:0;font-size:15px;line-height:1.55;color:var(--tb-text)}
.tb-quote figcaption .tb-cap{margin:6px 0 0!important}

/* Captions: like figure captions */
.tb-cap{font-size:13px;line-height:1.5;color:var(--tb-caption);margin:6px 0 0!important}
.tb-cap > span:first-child{font-weight:600}
.tb-cap a{color:var(--tb-green-dark)}

/* More */
.tb-more{margin:12px 0 0}
.tb-more summary{cursor:pointer;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--tb-green-dark);list-style:none;min-height:24px}
.tb-more summary::-webkit-details-marker{display:none}
.tb-more summary::before{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg);transition:transform .15s}
.tb-more[open] summary::before{transform:rotate(45deg)}
.tb-more > :not(summary){margin-top:12px}
.tb-more blockquote{margin:8px 0 0;padding:8px 12px;border-left:3px solid #9ca3af;background:var(--tb-soft);font-size:14px;border-radius:6px}

/* Lists */
.tb-list{list-style:none;padding:0;margin:0}
.tb-list li{padding:0 0 var(--tb-s2) 20px;margin:0 0 var(--tb-s2);border-bottom:1px solid var(--tb-rule);position:relative}
.tb-list li::before{content:"";position:absolute;left:2px;top:.62em;width:8px;height:8px;border-radius:2px;background:var(--tb-green)}
.tb-list li:last-child{border-bottom:0}
.tb-sources{font-size:14px;padding-left:1.2em}.tb-sources li{margin:0 0 6px}
.tb-brief-coverage,.tb-about{font-size:13px;color:var(--tb-caption);line-height:1.55}
.tb-brief-coverage{border-top:1px solid var(--tb-rule);padding-top:var(--tb-s2);margin-bottom:var(--tb-s4)}
.tb-brief-coverage p{margin:0 0 var(--tb-s1)}
.tb-about{margin-top:var(--tb-s3)!important}

/* Tables */
.tb-table-wrap{margin:var(--tb-s2) 0 0;overflow-x:auto}
.tb-table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.5}
.tb-table thead th{font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--tb-muted);text-align:left;padding:8px 12px;border-bottom:2px solid var(--tb-rule);background:var(--tb-soft)}
.tb-table td,.tb-table tbody th{text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid var(--tb-rule)}
.tb-table tbody th{font-weight:650;color:var(--tb-ink);width:28%}
.tb-table td:last-child{white-space:nowrap}
.tb-table td .tb-cap{display:block;margin:2px 0 0!important;white-space:normal}
.tb-table .tb-num-col{text-align:right}
@media (max-width:640px){
  .tb-table thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .tb-table,.tb-table tbody,.tb-table tr,.tb-table td,.tb-table tbody th{display:block;width:100%}
  .tb-table tr{border:1px solid var(--tb-rule);border-radius:10px;padding:12px var(--tb-s2);margin:0 0 12px}
  .tb-table td,.tb-table tbody th{border:0;padding:2px 0}
  .tb-table td:last-child{white-space:normal;margin-top:6px}
  .tb-table .tb-num-col{text-align:left}
}

/* Contested pairs, significance meter */
.tb-pair{display:grid;grid-template-columns:1fr 1fr;gap:var(--tb-s2)}
.tb-side-card,.tb-pair .tb-side{border:1px solid var(--tb-rule);border-radius:var(--tb-radius);padding:var(--tb-s2)}
.tb-pair .tb-side .tb-co{margin-top:0!important}
@media (max-width:640px){.tb-pair{grid-template-columns:1fr}}
.tb-meter{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--tb-caption)}
.tb-bar{display:inline-block;width:96px;height:6px;border-radius:999px;background:var(--tb-rule);overflow:hidden}
.tb-bar span{display:block;height:100%;background:var(--tb-green)}

/* Contents list */
.tb-toc ol{list-style:none;margin:0;padding:0;border-left:2px solid var(--tb-rule)}
.tb-toc li{margin:0}
.tb-toc a{display:flex;gap:10px;align-items:center;padding:6px 12px;font-size:14px;color:var(--tb-muted);text-decoration:none;line-height:1.35}
.tb-toc a:hover{color:var(--tb-green-dark);background:var(--tb-soft)}
.tb-toc .tb-num{width:22px;height:22px;font-size:12px;background:#d1fae5;color:var(--tb-green-ink)}

/* Actions panel: one primary button */
.tb-actions{border:1px solid var(--tb-rule);border-radius:var(--tb-radius);padding:20px;background:#fff}
.tb-btn{display:block;text-align:center;font-size:15px;font-weight:600;text-decoration:none;border-radius:10px;padding:10px var(--tb-s2);background:var(--tb-green-dark);color:#fff!important;border:2px solid var(--tb-green-dark)}
.tb-btn:hover{background:var(--tb-green-ink);border-color:var(--tb-green-ink)}
.tb-btn-2{background:#fff;color:var(--tb-green-dark)!important;margin-top:var(--tb-s2)}
.tb-btn-2:hover{background:#ecfdf5}
.tb-hint{font-size:13px;color:var(--tb-caption);margin:6px 0 0!important;line-height:1.45}
.tb-link{display:inline-block;margin-top:var(--tb-s2);font-size:13px;font-weight:500;color:var(--tb-muted)!important}
.tb-actions-wide{max-width:var(--tb-col)}
.tb-actions-wide .tb-btn{display:inline-block;margin-top:var(--tb-s1)}

/* Previous and next meeting cards */
.tb-pager{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:var(--tb-s6) 0 0}
.tb-card{display:flex;flex-direction:column;gap:2px;border:1px solid var(--tb-rule);border-radius:var(--tb-radius);padding:var(--tb-s2);text-decoration:none;color:var(--tb-ink)!important;min-height:96px}
a.tb-card:hover{border-color:var(--tb-green);background:#f0fdf4}
.tb-card strong{font-size:17px}
.tb-card .tb-label{margin:0!important}
.tb-card .tb-cap{margin:0!important}
.tb-card-off{background:var(--tb-soft)}
.tb-card-off strong{color:var(--tb-muted)}
.tb-card-empty{border:0;min-height:0}
@media (max-width:640px){.tb-pager{grid-template-columns:1fr}.tb-card-empty{display:none}}

/* Meeting index */
.tb-index .tb-callout,.tb-index .tb-head{max-width:var(--tb-col)}
.tb-legend{list-style:none;padding:0!important}
.tb-legend li{display:flex;gap:12px;align-items:baseline}
.tb-legend .tb-stage{min-width:84px;justify-content:center}
.tb-badge-group{font-size:14px}
.tb-cards{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:var(--tb-s2)}
.tb-mcard{border:1px solid var(--tb-rule);border-radius:var(--tb-radius);padding:20px}
.tb-mcard h3{margin:12px 0 var(--tb-s1)}
.tb-mcard h3 a{color:var(--tb-ink);text-decoration:none}
.tb-mcard h3 a:hover{color:var(--tb-green-dark);text-decoration:underline}
.tb-mcard .tb-meta{font-size:14px}

@media (max-width:640px){
  .tb{padding:var(--tb-s1) var(--tb-s2) var(--tb-s6)}
  .tb h1{font-size:28px}
  .tb h2{font-size:22px}
  .tb-callout{padding:var(--tb-s2) 20px}
}

/* Footer text on the dark green band meets WCAG AA on pages that use this stylesheet */
footer.site p{color:rgba(255,255,255,.78)!important}
footer.site .links a{color:rgba(255,255,255,.85)!important}