/* thunderboomer.cloud — shared theme.
   Baselined on squall.cloud's viewer (warm paper, Overpass, interstate-sign
   furniture) but recolored from highway-sign GREEN to the Interstate shield's
   own palette: shield BLUE as the primary brand, shield RED as the accent.
   Transportation is a first-class idea here, so the whole site wears the road. */
:root{
  --paper:#e6e3dc; --card:#ffffff; --ink:#141414; --ink2:#454038;
  /* primary = Interstate shield blue; -dk deeper navy; -sub pale sky; -tx white */
  --sign:#003f87; --sign-dk:#00285a; --sign-tx:#ffffff; --sign-sub:#cfe2f6;
  /* accent = Interstate shield red */
  --red:#c8102e; --red-dk:#9e0b22;
  --blue:#0a5ca8; --navy:#103e7e;
  --line:#cbc7be; --line2:#e4e1d9; --mut:#87837a;
  --radar:#070a0f;                 /* neutral mat behind imagery */
  --maxw:1200px;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--paper)}
body{color:var(--ink);font-family:'Overpass',Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;line-height:1.5}
a{color:var(--blue);text-decoration:none}
a:hover{color:var(--sign)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 18px}

/* top utility strip (dark, red underline — the shield's red pinstripe) */
.util{background:var(--ink);color:#cdc9c1;border-bottom:3px solid var(--red);
  font-family:'Overpass Mono',ui-monospace,monospace;font-size:11.5px;font-weight:700;
  letter-spacing:.06em}
.util .wrap{display:flex;align-items:center;gap:16px;height:34px}
.util a{color:#cdc9c1}.util a:hover{color:#fff}
.util .sp{flex:1}

/* masthead — the interstate-blue sign, double-struck with a red keyline */
.mast{background:var(--sign);border-radius:10px;color:#fff;padding:16px 20px;margin:16px 0;
  display:flex;align-items:center;gap:16px;flex-wrap:wrap;justify-content:space-between;
  box-shadow:inset 0 0 0 4px var(--sign),inset 0 0 0 6px rgba(255,255,255,.92),
    inset 0 0 0 10px var(--sign),0 10px 26px rgba(0,0,0,.18)}
.mast .word{font-weight:900;font-size:26px;letter-spacing:.01em;color:#fff}
.mast .word .yl{color:var(--sign-sub)}
.mast .tag{font-family:'Overpass Mono',monospace;font-weight:700;font-size:12px;
  letter-spacing:.1em;color:var(--sign-sub);text-transform:uppercase}
.mast nav{display:flex;gap:6px;flex-wrap:wrap}
.mast nav a{font-family:'Overpass Mono',monospace;font-size:11.5px;font-weight:700;
  letter-spacing:.06em;text-transform:uppercase;color:#eaf2ff;background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.28);border-radius:6px;padding:6px 11px}
.mast nav a:hover,.mast nav a.on{background:#fff;color:var(--sign)}

/* section rule — uppercase blue heading, red-and-blue dashed sign line */
.rule{display:flex;align-items:center;gap:12px;margin:22px 0 12px}
.rule h2{margin:0;color:var(--sign);font-size:15px;font-weight:900;text-transform:uppercase;
  letter-spacing:.12em;white-space:nowrap}
.rule .ln{height:3px;flex:1;background:repeating-linear-gradient(90deg,
  var(--sign) 0 18px,transparent 18px 20px,var(--red) 20px 30px,transparent 30px 34px)}
.rule .sub{color:var(--mut);font-size:11px;font-weight:700;letter-spacing:.06em;
  font-family:'Overpass Mono',monospace;text-transform:uppercase}

/* cards */
.card{background:var(--card);border:1px solid var(--line);border-radius:9px}
.card.pad{padding:14px 16px}

/* controls — segmented buttons, chips, primary */
.seg{display:flex;gap:5px;flex-wrap:wrap}
.seg button,.chip{font-family:'Overpass',sans-serif;font-weight:800;font-size:12.5px;
  letter-spacing:.02em;background:var(--card);color:var(--ink2);border:1px solid var(--line);
  border-radius:7px;padding:7px 13px;cursor:pointer}
.seg button:hover,.chip:hover{border-color:var(--sign)}
.seg button.on,.chip.on{background:var(--sign);color:#fff;border-color:var(--sign)}
.lbl{font-family:'Overpass Mono',monospace;font-size:10.5px;font-weight:700;color:var(--mut);
  letter-spacing:.09em;text-transform:uppercase}
.btn{font-family:'Overpass',sans-serif;font-weight:900;font-size:13px;letter-spacing:.04em;
  background:var(--blue);color:#fff;border:0;border-radius:7px;padding:9px 16px;cursor:pointer}
.btn:hover{background:var(--navy)}
.btn.go{background:var(--red)}.btn.go:hover{background:var(--red-dk)}

/* ──────────────────────────────────────────────────────────────────────────
   Full-screen radar pages (viewer.html)
   The map fills the viewport under a slim blue top bar; the frame covers the
   whole stage. A floating interstate-blue banner rides the upper level.
   ────────────────────────────────────────────────────────────────────────── */
.fs{height:100%;margin:0;overflow:hidden;display:flex;flex-direction:column}
.fstop{display:flex;align-items:center;gap:12px;padding:8px 15px;background:var(--sign);
  color:#fff;flex:0 0 auto;box-shadow:0 2px 12px rgba(0,0,0,.22);z-index:6;flex-wrap:wrap;
  border-bottom:3px solid var(--red)}
.fstop .word{font-weight:900;font-size:17px;color:#fff;letter-spacing:.01em}
.fstop .word .yl{color:var(--sign-sub)}
.fstop .sp{flex:1 1 auto}
.fstop .lbl{color:rgba(255,255,255,.6)}
.fstop .seg{display:flex;gap:4px;flex-wrap:wrap}
.fstop .seg button{font-family:'Overpass',sans-serif;font-weight:800;font-size:11.5px;
  background:rgba(255,255,255,.12);color:#eaf2ff;border:1px solid rgba(255,255,255,.3);
  border-radius:6px;padding:5px 10px;cursor:pointer}
.fstop .seg button.on{background:#fff;color:var(--sign)}
.fstop a.nav,.fstop .share{font-family:'Overpass Mono',monospace;font-size:10.5px;font-weight:700;
  letter-spacing:.05em;text-transform:uppercase;color:#eaf2ff;background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.3);border-radius:6px;padding:6px 10px;cursor:pointer}
.fstop a.nav:hover,.fstop .share:hover,.fstop a.nav.on{background:#fff;color:var(--sign)}
.fstop select{font-family:'Overpass',sans-serif;font-weight:800;font-size:13px;color:var(--ink);
  border:2px solid #fff;border-radius:6px;padding:5px 8px;background:#fff;cursor:pointer}
.fsmap{flex:1 1 auto;position:relative;background:var(--radar);
  display:flex;align-items:center;justify-content:center}
.fsmap img{max-width:100%;max-height:100%;object-fit:contain;transition:opacity .28s ease}
.fsmap img.swapping{opacity:0}
.fsmap.loading:after{content:"";position:absolute;width:34px;height:34px;border-radius:50%;
  border:3px solid rgba(255,255,255,.16);border-top-color:var(--sign-sub);
  animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* the floating interstate-blue banner — upper level, sails off to the right */
.ibanner{position:absolute;left:0;top:26px;z-index:5;display:flex;align-items:center;gap:14px;
  padding:12px 190px 12px 22px;pointer-events:none;color:#fff;max-width:82%;
  background:linear-gradient(90deg,
    rgba(0,47,108,.94) 0%, rgba(0,47,108,.90) 38%,
    rgba(11,77,162,.55) 64%, rgba(11,77,162,0) 100%);
  box-shadow:0 8px 26px rgba(0,0,0,.32);
  animation:ibsail .9s cubic-bezier(.2,.7,.2,1) both}
@keyframes ibsail{from{opacity:0;transform:translateX(-26px)}to{opacity:1;transform:none}}
.ibanner .ibsh{flex:none;width:40px;height:44px;border-radius:6px;background:#fff;
  display:flex;flex-direction:column;align-items:center;justify-content:flex-end;padding-bottom:4px;
  box-shadow:0 2px 8px rgba(0,0,0,.3);position:relative;overflow:hidden}
.ibanner .ibsh:before{content:"";position:absolute;top:0;left:0;right:0;height:12px;background:var(--red)}
.ibanner .ibsh b{color:var(--sign);font-weight:900;font-size:15px;line-height:1;z-index:1;letter-spacing:-.02em}
.ibanner .ibtx{min-width:0}
.ibanner .ibttl{font-weight:900;font-size:clamp(22px,3.2vw,34px);line-height:1;letter-spacing:-.01em;
  text-shadow:0 2px 10px rgba(0,0,0,.4);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.ibanner .ibsub{font-family:'Overpass Mono',monospace;font-size:11px;font-weight:700;
  letter-spacing:.12em;text-transform:uppercase;color:#cfe2f6;margin-top:5px;
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* bottom control dock on the stage (product rail + loop transport) */
.dock{position:absolute;left:50%;bottom:16px;transform:translateX(-50%);z-index:6;
  max-width:calc(100vw - 24px);display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  padding:8px 12px;background:rgba(255,255,255,.94);border:1px solid var(--line);
  border-top:3px solid var(--sign);border-radius:12px;box-shadow:0 8px 26px rgba(0,0,0,.28)}
.dock .grp{display:flex;align-items:center;gap:5px}
.dock .grp+.grp{padding-left:12px;border-left:1px solid var(--line)}
.dock .rail{display:flex;gap:5px;overflow-x:auto;max-width:min(52vw,620px);scrollbar-width:thin}
.dock .valid{font-family:'Overpass Mono',monospace;font-size:11.5px;color:var(--ink2);
  min-width:120px;text-align:right;font-variant-numeric:tabular-nums}
.dock .valid b{color:var(--sign)}
@media(max-width:760px){.dock .valid{display:none}.dock .rail{max-width:60vw}}
@media(max-width:640px){.ibanner{padding-right:90px;max-width:94%}.fstop .lbl{display:none}}

/* footer */
footer{margin-top:34px;background:var(--ink);color:#cdc9c1;border-top:4px solid var(--red);
  padding:20px 0;font-size:12.5px}
footer .fw{font-weight:900;font-size:19px;color:#fff}
footer .fw .yl{color:var(--sign-sub)}
footer a{color:#cdc9c1}footer a:hover{color:var(--sign-sub)}
.mono{font-family:'Overpass Mono',ui-monospace,monospace}