/*
 * File: tcp-subnav.css
 * Module: Platform Core / Shared UI shell (Master Prompt sections 9-10, UR-UI-01)
 * Purpose: The one module navigation pattern used by every workspace: a horizontal bar under
 * the global header with grouped dropdowns, scroll overflow on tablets and a section picker
 * sheet on phones. Colours come from the shared tokens so light/dark/high-contrast follow.
 */
.tcp-subnav{
  --sn-bg:var(--surface,#111827);
  --sn-border:var(--border,#1e3a5f);
  --sn-text:var(--text2,var(--tcp-text-muted,#94a3b8));
  --sn-strong:var(--text,#e2e8f0);
  --sn-accent:var(--color-primary,#0d9488);
  --sn-accent-soft:color-mix(in srgb,var(--sn-accent) 14%,transparent);
  --sn-hover:color-mix(in srgb,var(--sn-strong) 7%,transparent);
  background:color-mix(in srgb,var(--sn-bg) 92%,transparent);
  backdrop-filter:saturate(1.4) blur(10px);
  -webkit-backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--sn-border);
  font-family:var(--font,Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif);
}
.tcp-subnav-host{position:sticky;top:var(--tcp-global-header-height,0px);z-index:40}
.tcp-subnav__inner{display:flex;align-items:center;gap:10px;max-width:1600px;margin:0 auto;padding:0 20px;min-height:52px}
.tcp-subnav__module{display:flex;align-items:center;gap:8px;padding-right:14px;margin-right:2px;border-right:1px solid var(--sn-border);color:var(--sn-strong);font-weight:600;font-size:13px;white-space:nowrap}
.tcp-subnav__module i{display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--sn-accent-soft);color:var(--sn-accent);font-size:16px}
.tcp-subnav__scroller{position:relative;flex:1;min-width:0}
.tcp-subnav__list{display:flex;align-items:stretch;gap:2px;list-style:none;margin:0;padding:0;overflow-x:auto;scrollbar-width:none;scroll-behavior:smooth;
  -webkit-mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);mask-image:linear-gradient(90deg,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%)}
.tcp-subnav__list::-webkit-scrollbar{display:none}
.tcp-subnav__list>li{position:relative;display:flex}
.tcp-subnav__item{appearance:none;border:0;background:none;color:var(--sn-text);font:inherit;font-size:13px;font-weight:500;
  display:inline-flex;align-items:center;gap:7px;padding:15px 12px;white-space:nowrap;cursor:pointer;text-decoration:none;position:relative;border-radius:8px 8px 0 0;transition:color .15s,background .15s}
.tcp-subnav__item i{font-size:16px;opacity:.85}
.tcp-subnav__item:hover{color:var(--sn-strong);background:var(--sn-hover)}
.tcp-subnav__item:focus-visible{outline:2px solid var(--sn-accent);outline-offset:-2px}
.tcp-subnav__item[aria-current="page"],.tcp-subnav__item.is-active{color:var(--sn-strong);font-weight:600}
.tcp-subnav__item[aria-current="page"]::after,.tcp-subnav__item.is-active::after{content:"";position:absolute;left:10px;right:10px;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--sn-accent)}
.tcp-subnav__item[aria-disabled="true"]{opacity:.45;cursor:not-allowed}
.tcp-subnav__caret{font-size:13px!important;transition:transform .15s}
.tcp-subnav__item[aria-expanded="true"] .tcp-subnav__caret{transform:rotate(180deg)}
.tcp-subnav__badge{min-width:20px;padding:1px 7px;border-radius:999px;font-size:11px;font-weight:600;line-height:18px;text-align:center;background:var(--sn-hover);color:var(--sn-strong)}
.tcp-subnav__badge[data-tone="warning"]{background:color-mix(in srgb,var(--color-warning,#f59e0b) 18%,transparent);color:var(--color-warning,#f59e0b)}
.tcp-subnav__badge[data-tone="danger"]{background:color-mix(in srgb,var(--color-danger,#ef4444) 18%,transparent);color:var(--color-danger,#ef4444)}
.tcp-subnav__badge:empty{display:none}

.tcp-subnav__menu{font-family:var(--font,Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif);position:fixed;min-width:260px;max-width:340px;max-height:min(70vh,520px);overflow:auto;padding:6px;border-radius:12px;
  background:var(--surface2,var(--sn-bg));border:1px solid var(--sn-border);box-shadow:0 18px 40px rgba(2,6,23,.35);z-index:13000}
.tcp-subnav__menu[hidden]{display:none}
.tcp-subnav__menu-item[hidden],.tcp-subnav__list>li[hidden]{display:none!important}
.tcp-subnav__menu-item{appearance:none;border:0;background:none;width:100%;text-align:left;display:grid;grid-template-columns:28px 1fr auto;gap:2px 10px;align-items:center;
  padding:9px 10px;border-radius:8px;color:var(--sn-strong);font:inherit;font-size:13px;cursor:pointer;text-decoration:none}
.tcp-subnav__menu-item i{grid-row:span 2;display:grid;place-items:center;width:28px;height:28px;border-radius:8px;background:var(--sn-hover);color:var(--sn-accent);font-size:15px}
.tcp-subnav__menu-item small{grid-column:2;color:var(--sn-text);font-size:11.5px;line-height:1.35}
.tcp-subnav__menu-item:hover,.tcp-subnav__menu-item:focus-visible{background:var(--sn-hover);outline:none}
.tcp-subnav__menu-item[aria-current="page"]{background:var(--sn-accent-soft)}
.tcp-subnav__menu-item[aria-current="page"] i{background:var(--sn-accent);color:#fff}
.tcp-subnav__menu-label{padding:8px 10px 4px;font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--sn-text)}

.tcp-subnav__picker{display:none}
.tcp-subnav__actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.tcp-subnav__action{appearance:none;display:inline-flex;align-items:center;gap:7px;padding:8px 12px;border-radius:10px;border:1px solid var(--sn-border);
  background:var(--sn-hover);color:var(--sn-strong);font:inherit;font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap}
.tcp-subnav__action.is-primary{background:var(--sn-accent);border-color:var(--sn-accent);color:#fff}
.tcp-subnav__action:hover{filter:brightness(1.08)}
.tcp-subnav__action:focus-visible{outline:2px solid var(--sn-accent);outline-offset:2px}
.tcp-subnav__action i:last-child{font-size:13px;opacity:.8}

/* Phone: one clear "where am I" button that opens a full section sheet. */
@media (max-width:760px){
  .tcp-subnav__inner{padding:0 12px;min-height:50px}
  .tcp-subnav__module span{display:none}
  .tcp-subnav__module{padding-right:10px}
  .tcp-subnav__scroller{display:none}
  .tcp-subnav__picker{display:flex;flex:1;min-width:0;align-items:center;justify-content:space-between;gap:8px;appearance:none;border:1px solid var(--sn-border);
    background:var(--sn-hover);color:var(--sn-strong);font:inherit;font-size:14px;font-weight:600;padding:9px 12px;border-radius:10px;cursor:pointer}
  .tcp-subnav__picker span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:flex;align-items:center;gap:8px}
  .tcp-subnav__action span{display:none}
  .tcp-subnav__action{padding:9px 10px}
  .tcp-subnav__menu.is-sheet{left:0!important;right:0;top:auto!important;bottom:0;max-width:none;width:100%;max-height:78vh;border-radius:18px 18px 0 0;padding:10px 10px calc(14px + env(safe-area-inset-bottom))}
  .tcp-subnav__menu.is-sheet::before{content:"";display:block;width:40px;height:4px;border-radius:4px;margin:2px auto 8px;background:var(--sn-border)}
}
.tcp-subnav-backdrop{position:fixed;inset:0;background:rgba(2,6,23,.45);z-index:12990}
.tcp-subnav-backdrop[hidden]{display:none}

/* Pages whose legacy sidebar was adopted into the bar give that column back to content. */
body.tcp-subnav-adopted [data-tcp-subnav-source]{display:none!important}
/* Module layouts that reserved a column for their old sidebar give it back to content. */
body[data-tcp-module="registry"] .registry-app{grid-template-columns:minmax(0,1fr)!important}
body[data-tcp-module="registry"] #menu-toggle{display:none!important}
body[data-tcp-module="data"] .shell{grid-template-columns:minmax(0,1fr)!important}
body[data-tcp-module="research"] .research-app{grid-template-columns:minmax(0,1fr)!important}
body[data-tcp-module="research"] .research-app>main,body[data-tcp-module="data"] .shell>main{margin:0 auto!important}
body[data-tcp-module="models"] .layout>.sidebar-backdrop,body[data-tcp-module="models"] .mobile-only[onclick*="Predictive"]{display:none!important}
body.tcp-global-chrome[data-tcp-module="models"]>.top{display:none!important}
@media(max-width:760px){
  body[data-tcp-module="research"] .tcp-page-header{flex-direction:column;align-items:stretch;gap:12px}
  body[data-tcp-module="research"] .tcp-page-header-actions{margin-left:0;flex-wrap:wrap}
}
body[data-tcp-module="management"] #app{grid-template-columns:0 minmax(0,1fr)!important}
body[data-tcp-module="management"] #main{grid-column:1 / -1}
body[data-tcp-module="management"] .tcp-subnav-host{top:0}
body[data-tcp-module="management"] #management-menu-toggle{display:none!important}
/* Pages whose own top row repeated the platform brand: the global header already shows it. */
body[data-tcp-module="home"] .work-topbar .brand,body[data-tcp-module="home"] .approval-topbar .brand,
body[data-tcp-module="analytics"] .study-topbar .study-brand,body[data-tcp-module="analytics"] .study-topbar>a:first-child{display:none!important}
@media (prefers-reduced-motion:reduce){.tcp-subnav__list{scroll-behavior:auto}.tcp-subnav__caret{transition:none}}
@media print{.tcp-subnav{display:none}}