/* TowerScope shell: shared header, phone tab bar, menu sheet, footer, and the
   small set of page components used by Home, About and the airport pages.
   Every rule is scoped to a .tsh- class so pages keep their own CSS.
   Needs /assets/tokens.css first. */

/* ---------- base, only on pages that opt in with body.tsh-page ---------- */
body.tsh-page{margin:0;background:var(--tsh-bg);color:var(--tsh-ink);font:15px/1.55 var(--tsh-font);-webkit-font-smoothing:antialiased;-webkit-text-size-adjust:100%;min-height:100vh;overflow-x:hidden;color-scheme:dark}
body.tsh-page *,body.tsh-page *::before,body.tsh-page *::after{box-sizing:border-box}
:where(body.tsh-page) a{color:var(--tsh-accent-2);text-decoration:none}
:where(body.tsh-page) a:hover{text-decoration:underline;text-underline-offset:3px}
body.tsh-page :focus-visible{outline:2px solid var(--tsh-accent-2);outline-offset:2px;border-radius:6px}
:where(body.tsh-page) :where(h1,h2,h3){margin:0;font-weight:700;letter-spacing:-.025em;line-height:1.15}
:where(body.tsh-page) p{margin:0 0 12px}
:where(body.tsh-page) img{max-width:100%}
.tsh-sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.tsh-skip{position:absolute;left:8px;top:-60px;z-index:100;background:var(--tsh-accent);color:var(--tsh-on-accent)!important;padding:10px 14px;border-radius:var(--tsh-r-pill);font:600 14px var(--tsh-font)}
.tsh-skip:focus{top:8px}

/* ---------- header ---------- */
.tsh-top{position:sticky;top:0;z-index:var(--tsh-z-top);background:rgba(11,13,18,.86);-webkit-backdrop-filter:var(--tsh-blur);backdrop-filter:var(--tsh-blur);border-bottom:1px solid var(--tsh-line);font-family:var(--tsh-font)}
.tsh-top-in{max-width:var(--tsh-max);margin:0 auto;padding:0 var(--tsh-gutter);height:var(--tsh-h-top);display:flex;align-items:center;gap:16px}
.tsh-brand{display:inline-flex;align-items:center;gap:10px;color:var(--tsh-ink)!important;font:700 17px/1 var(--tsh-font);letter-spacing:-.02em;text-decoration:none!important;flex:none;min-height:44px}
.tsh-brand img{display:block;height:20px;width:auto;max-width:none}
.tsh-nav{display:flex;gap:2px;margin-left:auto}
.tsh-nav a{display:inline-flex;align-items:center;min-height:40px;padding:0 14px;border-radius:var(--tsh-r-pill);color:var(--tsh-mute)!important;font:500 14px/1 var(--tsh-font);white-space:nowrap;text-decoration:none!important}
.tsh-nav a:hover{color:var(--tsh-ink)!important;background:var(--tsh-surface)}
.tsh-nav a[aria-current=page]{color:var(--tsh-ink)!important;background:var(--tsh-accent-soft)}
.tsh-title{display:none;color:var(--tsh-mute);font:600 14px var(--tsh-font);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}

/* app pages (Controller): header is a normal row inside a full-height layout */
.tsh-top.is-app{position:relative;flex:0 0 auto;background:var(--tsh-bar);-webkit-backdrop-filter:none;backdrop-filter:none}
.tsh-top.is-app .tsh-top-in{max-width:none;height:52px;padding:0 12px}

/* ---------- menu button + sheet (app pages on phones, and /live/) ---------- */
.tsh-menu{position:relative;display:none;margin-left:auto;flex:none}
.tsh-menu>summary{list-style:none;display:inline-flex;align-items:center;gap:6px;height:40px;min-width:44px;padding:0 12px;border-radius:var(--tsh-r-pill);border:1px solid var(--tsh-line-2);background:var(--tsh-surface);color:var(--tsh-ink);font:600 14px var(--tsh-font);cursor:pointer;user-select:none;-webkit-tap-highlight-color:transparent}
.tsh-menu>summary::-webkit-details-marker{display:none}
.tsh-menu>summary svg{width:18px;height:18px}
.tsh-menu[open]>summary{background:var(--tsh-accent-soft);border-color:var(--tsh-accent-line)}
/* the scrim is part of the summary, so tapping it closes the menu with no JS */
.tsh-menu[open]>summary::after{content:"";position:fixed;inset:0;z-index:1;background:rgba(5,7,10,.5);cursor:default}
.tsh-sheet{position:absolute;right:0;top:calc(100% + 8px);z-index:2;width:260px;padding:8px;background:var(--tsh-sheet-bg);border:1px solid var(--tsh-line-2);border-radius:var(--tsh-r-lg);box-shadow:0 16px 40px rgba(0,0,0,.45);font-family:var(--tsh-font)}
.tsh-sheet a{display:flex;align-items:center;gap:12px;min-height:48px;padding:0 12px;border-radius:var(--tsh-r-md);color:var(--tsh-ink)!important;font:500 15px var(--tsh-font);text-decoration:none!important}
.tsh-sheet a svg{width:20px;height:20px;color:var(--tsh-mute);flex:none}
.tsh-sheet a:hover{background:var(--tsh-surface)}
.tsh-sheet a[aria-current=page]{background:var(--tsh-accent-soft)}
.tsh-sheet a[aria-current=page] svg{color:var(--tsh-accent-2)}
.tsh-sheet-h{display:none}
.tsh-sheet-ctx{margin:6px 4px 2px;padding:10px 8px 2px;border-top:1px solid var(--tsh-line)}
.tsh-sheet-ctx p{margin:0 0 4px;color:var(--tsh-faint);font:600 12px var(--tsh-font)}
.tsh-sheet-ctx a{min-height:44px;font-size:14px;color:var(--tsh-accent-2)!important}

/* ---------- phone tab bar (content pages) ---------- */
.tsh-tabbar{display:none}
.tsh-tabbar svg,.tsh-sheet svg,.tsh-menu svg{fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* ---------- footer ---------- */
.tsh-foot{margin-top:72px;border-top:1px solid var(--tsh-line);color:var(--tsh-mute);font:13px/1.5 var(--tsh-font)}
.tsh-foot-in{max-width:var(--tsh-max);margin:0 auto;padding:28px var(--tsh-gutter) 36px;display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:24px}
.tsh-foot b{color:var(--tsh-ink)}
.tsh-foot img{height:16px;width:auto;margin-bottom:10px;display:block}
.tsh-foot h2{margin:0 0 8px;font:600 12px var(--tsh-font);letter-spacing:.06em;text-transform:uppercase;color:var(--tsh-faint)}
.tsh-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.tsh-foot a{color:var(--tsh-mute)!important;display:inline-block;padding:3px 0}
.tsh-foot a:hover{color:var(--tsh-ink)!important}

@media (max-width:820px){
  .tsh-top-in{height:var(--tsh-h-top-sm);gap:10px}
  .tsh-nav{display:none}
  .tsh-title{display:block}
  .tsh-top.is-app .tsh-menu{display:block}
  .tsh-top.is-app .tsh-title{flex:1}
  .tsh-tabbar{display:flex;position:fixed;left:12px;right:12px;bottom:max(10px,env(safe-area-inset-bottom));z-index:var(--tsh-z-tabbar);padding:6px;gap:2px;background:rgba(21,24,33,.94);-webkit-backdrop-filter:var(--tsh-blur);backdrop-filter:var(--tsh-blur);border:1px solid var(--tsh-line-2);border-radius:var(--tsh-r-pill);box-shadow:0 8px 30px rgba(0,0,0,.35);font-family:var(--tsh-font)}
  .tsh-tabbar a{flex:1 1 0;min-width:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:48px;padding:4px 0;border-radius:var(--tsh-r-pill);color:var(--tsh-mute)!important;font:600 11px/1.1 var(--tsh-font);text-decoration:none!important;text-align:center;-webkit-tap-highlight-color:transparent}
  .tsh-tabbar a svg{width:20px;height:20px}
  .tsh-tabbar a[aria-current=page]{color:var(--tsh-ink)!important;background:var(--tsh-accent-soft)}
  body.tsh-has-tabbar{padding-bottom:calc(84px + env(safe-area-inset-bottom))}
  .tsh-foot{margin-top:56px}
  .tsh-foot-in{grid-template-columns:1fr 1fr;gap:20px}
  .tsh-foot-in>div:first-child{grid-column:1/-1}
  /* sheet becomes a bottom sheet */
  .tsh-sheet{position:fixed;left:0;right:0;top:auto;bottom:0;width:auto;border-radius:22px 22px 0 0;border-bottom:0;padding:8px 12px calc(14px + env(safe-area-inset-bottom));box-shadow:var(--tsh-sheet-shadow);animation:tsh-up var(--tsh-t) var(--tsh-ease)}
  .tsh-sheet-h{display:flex;flex-direction:column;align-items:center;gap:8px;padding:2px 0 8px;color:var(--tsh-faint);font:600 12px var(--tsh-font)}
  .tsh-sheet-h::before{content:"";width:40px;height:5px;border-radius:3px;background:var(--tsh-line-2)}
}
@keyframes tsh-up{from{transform:translateY(24px);opacity:.4}to{transform:none;opacity:1}}

/* ---------- page components (content pages) ---------- */
.tsh-wrap{max-width:var(--tsh-max);margin:0 auto;padding:0 var(--tsh-gutter)}
.tsh-narrow{max-width:820px}
.tsh-eyebrow{font:600 12px var(--tsh-font);letter-spacing:.08em;text-transform:uppercase;color:var(--tsh-accent-2);margin:0 0 12px}
.tsh-h1{font-size:var(--tsh-fs-h1)}
.tsh-h2{font-size:var(--tsh-fs-h2)}
.tsh-h3{font-size:17px;letter-spacing:-.01em}
.tsh-lede{font-size:clamp(16px,2vw,19px);color:var(--tsh-mute);max-width:56ch;margin:16px 0 24px}
.tsh-mute{color:var(--tsh-mute)}.tsh-faint{color:var(--tsh-faint)}.tsh-small{font-size:13px}
.tsh-section{padding-top:48px}
.tsh-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:0 0 16px}
.tsh-head a{font-size:14px;white-space:nowrap}
.tsh-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

.tsh-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:var(--tsh-h-btn);padding:0 20px;border-radius:var(--tsh-r-pill);border:1px solid var(--tsh-line-2);background:var(--tsh-surface);color:var(--tsh-ink)!important;font:600 15px var(--tsh-font);cursor:pointer;text-decoration:none!important;white-space:nowrap}
.tsh-btn:hover{background:var(--tsh-surface-3)}
.tsh-btn.is-primary{background:var(--tsh-accent);border-color:var(--tsh-accent);color:var(--tsh-on-accent)!important}
.tsh-btn.is-primary:hover{background:var(--tsh-accent-2)}
.tsh-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}

.tsh-chip{display:inline-flex;align-items:center;gap:6px;min-height:var(--tsh-h-chip);padding:0 14px;border-radius:var(--tsh-r-pill);border:1px solid var(--tsh-line-2);background:transparent;color:var(--tsh-mute)!important;font:500 13px var(--tsh-font);cursor:pointer;text-decoration:none!important;white-space:nowrap}
.tsh-chip:hover{color:var(--tsh-ink)!important;background:var(--tsh-surface)}
.tsh-chip[aria-pressed=true]{background:var(--tsh-accent-soft);border-color:var(--tsh-accent-line);color:var(--tsh-ink)!important}

.tsh-pill{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:var(--tsh-r-pill);font:600 12px var(--tsh-font);white-space:nowrap;border:1px solid var(--tsh-line-2);color:var(--tsh-ink)}
.tsh-pill::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c,var(--tsh-mute))}
.tsh-pill.is-ok{--c:var(--tsh-ok);background:var(--tsh-ok-soft);border-color:rgba(94,211,154,.35)}
.tsh-pill.is-warn{--c:var(--tsh-warn);background:var(--tsh-warn-soft);border-color:rgba(242,179,94,.35)}
.tsh-pill.is-bad{--c:var(--tsh-bad);background:var(--tsh-bad-soft);border-color:rgba(255,107,107,.35)}

.tsh-card{display:block;background:var(--tsh-surface);border:1px solid var(--tsh-line);border-radius:var(--tsh-r-lg);padding:20px;color:var(--tsh-ink)}
a.tsh-card{color:var(--tsh-ink)!important;text-decoration:none!important;transition:border-color var(--tsh-t),background var(--tsh-t)}
a.tsh-card:hover{border-color:var(--tsh-accent-line);background:var(--tsh-surface-3)}
.tsh-card p{color:var(--tsh-mute);font-size:14px;margin:6px 0 0}
.tsh-card .tsh-go{display:inline-block;margin-top:12px;color:var(--tsh-accent-2);font:600 14px var(--tsh-font)}
.tsh-grid{display:grid;gap:14px}
.tsh-g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.tsh-g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.tsh-g4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:900px){.tsh-g3,.tsh-g4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:560px){.tsh-g2,.tsh-g3,.tsh-g4{grid-template-columns:minmax(0,1fr)}}

.tsh-note{padding:12px 14px;border-radius:var(--tsh-r-md);border:1px solid var(--tsh-line-2);background:var(--tsh-surface);color:var(--tsh-mute);font-size:14px}
.tsh-crumbs{font-size:13px;color:var(--tsh-faint);margin:20px 0 14px}
.tsh-crumbs a{color:var(--tsh-mute)!important}

.tsh-kv{display:grid;grid-template-columns:max-content 1fr;gap:10px 20px;margin:0;font-size:15px}
.tsh-kv dt{color:var(--tsh-faint)}
.tsh-kv dd{margin:0;font-variant-numeric:tabular-nums}
.tsh-tblwrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tsh-table{width:100%;border-collapse:collapse;font-size:14px}
.tsh-table th{text-align:left;font:600 12px var(--tsh-font);color:var(--tsh-faint);letter-spacing:.04em;text-transform:uppercase;padding:10px 12px;border-bottom:1px solid var(--tsh-line)}
.tsh-table td{padding:11px 12px;border-bottom:1px solid var(--tsh-line);vertical-align:top;font-variant-numeric:tabular-nums}
.tsh-table tr:last-child td{border-bottom:0}

/* tap-to-explain */
.tsh-term{all:unset;cursor:help;color:inherit;border-bottom:1px dotted currentColor;-webkit-tap-highlight-color:transparent}
.tsh-term:focus-visible{outline:2px solid var(--tsh-accent-2);outline-offset:2px;border-radius:3px}
.tsh-tip{position:absolute;z-index:90;max-width:min(300px,calc(100vw - 24px));padding:10px 12px;border-radius:var(--tsh-r-md);background:var(--tsh-surface-3);border:1px solid var(--tsh-line-2);box-shadow:0 10px 30px rgba(0,0,0,.4);color:var(--tsh-ink);font:14px/1.45 var(--tsh-font)}
.tsh-tip b{display:block;margin-bottom:2px}
.tsh-tip a{font-size:13px}

/* ---------- airport page ---------- */
.tsh-ap{padding-bottom:8px}
.tsh-ap-name{font-size:clamp(28px,4.6vw,44px);max-width:22ch}
.tsh-ap-codes{margin:10px 0 0;color:var(--tsh-mute);font:600 15px var(--tsh-font);letter-spacing:.01em}
.tsh-ap-act{margin:22px 0 0}
.tsh-ap-hint{margin:12px 0 0}
.tsh-ap-facts{margin-top:24px}
.tsh-ap-sec{margin-top:32px}
.tsh-ap-sec>h2{margin:0 0 12px}
.tsh-ap-tbl{padding:4px 8px}
.tsh-ap-note{margin-top:32px}
@media (max-width:560px){.tsh-ap-act .tsh-btn{flex:1 1 100%}}

/* ---------- moved / not found ---------- */
.tsh-moved{padding:64px var(--tsh-gutter) 8px}
.tsh-moved h1{margin-bottom:10px}

/* menu label hides on small phones, icon stays */
@media (max-width:420px){.tsh-menu .tsh-menu-t{display:none}.tsh-menu>summary{padding:0 10px}}
body.tsh-page [hidden],.tsh-sheet [hidden]{display:none!important}