:root{
  --bg:#0b0e13; --panel:#141922; --panel2:#1b222d; --line:#2a323f;
  --fg:#e8edf5; --dim:#8a97ab;
  --safe:#22c55e; --fast:#3b82f6; --cam:#ef4444; --warn:#f59e0b;
  --sat:env(safe-area-inset-top,0px);
  --sab:env(safe-area-inset-bottom,0px);
  --sal:env(safe-area-inset-left,0px);
  --sar:env(safe-area-inset-right,0px);
  --tap:46px;               /* minimum comfortable touch target */
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--fg);
  overflow:hidden;overscroll-behavior:none;-webkit-text-size-adjust:100%;
  font:15px/1.35 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
body{height:100dvh}
button,input{font:inherit;touch-action:manipulation}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--fast);outline-offset:2px}
#map{position:absolute;inset:0}
.leaflet-container{background:#0b0e13}

/* ---------- top bar ---------- */
#top{position:absolute;top:0;left:0;right:0;z-index:500;display:flex;gap:8px;
  padding:10px calc(10px + var(--sar)) 10px calc(10px + var(--sal));
  padding-top:calc(10px + var(--sat));
  background:linear-gradient(#0b0e13ee,#0b0e1300);
  -webkit-user-select:none;user-select:none}
#fields{flex:1;min-width:0;display:flex;flex-direction:column;overflow:hidden;
  background:var(--panel);border:1px solid var(--line);border-radius:12px}
.frow{display:flex;align-items:center;height:45px}
.frow+.frow{border-top:1px solid var(--line)}
.frow:focus-within{background:var(--panel2)}
.pin{width:9px;height:9px;border-radius:50%;flex:none;margin:0 11px 0 14px}
.pin.from{background:var(--dim);box-shadow:0 0 0 3px rgba(138,151,171,.22)}
.pin.to{background:var(--cam);box-shadow:0 0 0 3px rgba(239,68,68,.22)}
.frow input{flex:1;min-width:0;height:100%;padding:0;border:0;background:none;color:var(--fg);
  font-size:16px;outline:none;text-overflow:ellipsis}  /* 16px stops iOS zooming on focus */
.frow input::placeholder{color:var(--dim)}
.fclear{width:38px;height:100%;flex:none;border:0;background:none;color:var(--dim);
  font-size:23px;line-height:1;display:none}
.frow.filled .fclear{display:block}
#topbtns{flex:none;display:flex;flex-direction:column;gap:7px}
#topbtns .icon{flex:1;height:auto}
.icon{width:var(--tap);height:var(--tap);flex:none;border-radius:12px;border:1px solid var(--line);
  background:var(--panel);color:var(--fg);font-size:19px;display:grid;place-items:center}
.icon:active{background:var(--panel2)}
.icon.on{color:var(--fast);border-color:var(--fast)}
#locate{color:var(--fast)}                 /* the familiar blue "my location" crosshair */
#locate svg{width:22px;height:22px;display:block}

#results{position:absolute;top:calc(110px + var(--sat));z-index:501;background:var(--panel);
  left:calc(10px + var(--sal));right:calc(10px + var(--sar));
  border:1px solid var(--line);border-radius:12px;display:none;
  max-height:min(46vh,340px);overflow-y:auto;-webkit-overflow-scrolling:touch}
#results.show{display:block}
#results div{padding:13px 14px;border-bottom:1px solid var(--line);font-size:14px}
#results div:last-child{border:0}
#results div:active{background:var(--panel2)}

/* ---------- bottom panel ---------- */
#panel{position:absolute;left:0;right:0;bottom:0;z-index:500;display:flex;flex-direction:column;gap:10px;
  padding:12px calc(12px + var(--sar)) calc(12px + var(--sab)) calc(12px + var(--sal));
  background:linear-gradient(#0b0e1300,#0b0e13cc 22%,#0b0e13);
  -webkit-user-select:none;user-select:none}
.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:14px}
.hint{text-align:center;color:var(--dim);font-size:13px}
#attrib{font-size:10.5px;line-height:1.5;color:#667082;text-align:center;
  padding:0 2px;-webkit-user-select:none;user-select:none}
#attrib a,.linkish{color:#8794a8;text-decoration:underline;text-underline-offset:2px}
.linkish{border:0;background:none;padding:0;font:inherit}

/* route choice */
#choose{display:none;flex-direction:column;gap:10px}
body.choosing #choose{display:flex}
body.choosing #idle{display:none}
.opt{display:flex;align-items:center;gap:12px;border-left:4px solid var(--line)}
.opt.sel{border-left-color:var(--pick,var(--fast));background:var(--panel2)}
.opt .lbl{font-size:11px;letter-spacing:.09em;color:var(--dim);text-transform:uppercase}
.opt .big{font-size:21px;font-weight:650;margin-top:2px}
.opt .sub{font-size:12px;color:var(--dim);margin-top:2px}
.opt .exp{margin-left:auto;text-align:right}
.opt .n{font-size:26px;font-weight:700;line-height:1}
.opt .n.clean{color:var(--safe)}
.opt .n.hot{color:var(--cam)}
.opt .expl{font-size:10px;letter-spacing:.08em;color:var(--dim);text-transform:uppercase;margin-top:3px}

.btnrow{display:flex;gap:10px}
button.go{flex:1;height:56px;border:0;border-radius:14px;background:var(--safe);color:#04180c;
  font-size:18px;font-weight:750;letter-spacing:.04em;
  display:flex;align-items:center;justify-content:center;gap:8px}
button.go:active{filter:brightness(.9)}
button.go svg{width:20px;height:20px;flex:none}
button.go.alt{flex:0 0 40%;background:var(--panel2);color:var(--fg);border:1px solid var(--line);
  font-size:15px;font-weight:650;letter-spacing:0}
button.go.alt.narrow{flex:0 0 58px}
button.end{flex:1;background:var(--panel);color:var(--cam);border:1px solid var(--line);font-size:15px}

/* navigation */
#nav{display:none}
body.navigating #nav{display:flex;flex-direction:column;gap:10px}
body.navigating #choose,body.navigating #idle{display:none}
body.navigating #top{display:none}
#turn{display:flex;align-items:center;gap:14px}
#turn .arrow{font-size:34px;width:46px;text-align:center;flex:none}
#turn .txt{flex:1;min-width:0}
#turn .dist{font-size:26px;font-weight:750;line-height:1.05}
#turn .instr{font-size:14px;color:var(--dim);margin-top:3px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
#trip{display:flex;justify-content:space-between;gap:6px;font-size:13px;color:var(--dim);padding:0 4px}
#trip b{color:var(--fg);font-size:15px;font-weight:650}
#alert{background:var(--cam);color:#fff;border-radius:12px;padding:12px 14px;font-weight:700;
  text-align:center;display:none;animation:pulse 1s ease-in-out infinite}
#alert.show{display:block}
@keyframes pulse{50%{opacity:.72}}

#toast{position:absolute;top:calc(74px + var(--sat));left:50%;transform:translateX(-50%);z-index:600;
  background:var(--panel2);border:1px solid var(--line);color:var(--fg);padding:9px 16px;
  border-radius:20px;font-size:13px;display:none;max-width:88%;text-align:center}
#toast.show{display:block}
body.navigating #toast{top:calc(12px + var(--sat))}

.me{width:20px;height:20px;border-radius:50%;background:var(--fast);
  border:3px solid #fff;box-shadow:0 0 0 6px rgba(59,130,246,.25)}
.cam-dot{width:9px;height:9px;border-radius:50%;background:var(--cam);border:1.5px solid #fff}
.start-dot{width:16px;height:16px;border-radius:50%;background:#e8edf5;
  border:4px solid #141922;box-shadow:0 0 0 2px #e8edf5}

/* ---------- sheets ---------- */
#scrim{position:fixed;inset:0;z-index:900;background:rgba(4,6,10,.66);
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.sheet{position:fixed;z-index:901;left:0;right:0;bottom:0;
  background:var(--panel);border-top:1px solid var(--line);
  border-radius:20px 20px 0 0;
  padding:8px calc(16px + var(--sar)) calc(16px + var(--sab)) calc(16px + var(--sal));
  max-height:88dvh;overflow-y:auto;-webkit-overflow-scrolling:touch;
  animation:rise .22s cubic-bezier(.2,.8,.3,1)}
@keyframes rise{from{transform:translateY(14px);opacity:.4}}
.sheet[hidden],#scrim[hidden]{display:none}
.grab{width:38px;height:4px;border-radius:2px;background:var(--line);margin:2px auto 12px}
.sheet h2{margin:0 0 6px;font-size:19px;font-weight:700}
.sheet-sub{margin:0 0 14px;font-size:13px;line-height:1.5;color:var(--dim)}

.closebtn{width:100%;height:50px;margin-top:5px;border-radius:14px;border:1px solid var(--line);
  background:none;color:var(--dim);font-size:15px}
.closebtn.accent{color:var(--fg);background:var(--panel2);margin-bottom:4px}

.field{display:flex;flex-direction:column;gap:7px;margin:0 0 14px}
.field>span{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--dim)}
.field>span b{color:var(--fg);font-weight:650;letter-spacing:0;text-transform:none;font-size:13px}
.field select{width:100%;height:48px;padding:0 12px;border-radius:12px;border:1px solid var(--line);
  background:var(--panel2);color:var(--fg);font-size:15px;appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--dim) 50%),
                   linear-gradient(135deg,var(--dim) 50%,transparent 50%);
  background-position:calc(100% - 19px) 21px,calc(100% - 13px) 21px;
  background-size:6px 6px,6px 6px;background-repeat:no-repeat}
.field input[type=range]{width:100%;height:34px;accent-color:var(--safe);background:none}
.fieldnote{margin:-9px 0 14px;font-size:12px;color:var(--dim)}

.credits{-webkit-user-select:text;user-select:text}
.credits section{padding:14px 0;border-top:1px solid var(--line)}
.credits h3{margin:0 0 8px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--dim)}
.credits p{margin:0 0 9px;font-size:13.5px;line-height:1.55}
.credits p:last-child{margin-bottom:0}
.credits a{color:var(--fg);text-decoration:underline;text-underline-offset:2px;
  text-decoration-color:var(--dim)}
.credits code{font-size:12px;background:var(--panel2);border-radius:4px;padding:1px 5px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;white-space:nowrap}
.credits em{color:var(--fg);font-style:normal;font-weight:650}

/* ---------- landscape phones: panel becomes a right-hand column ---------- */
@media (orientation:landscape) and (max-height:520px){
  #panel{left:auto;top:0;width:min(52%,360px);justify-content:flex-end;
    padding-top:calc(10px + var(--sat));
    background:linear-gradient(90deg,#0b0e1300,#0b0e13d9 34%,#0b0e13)}
  #top{right:min(52%,360px)}
  #results{right:calc(min(52%,360px) + 10px);max-height:min(50vh,190px)}
  .opt .big{font-size:19px}
  .opt .n{font-size:22px}
  button.go{height:48px;font-size:16px}
  #turn .dist{font-size:22px}
  #turn .arrow{font-size:28px;width:38px}
  .sheet{left:auto;width:min(78%,460px);max-height:100dvh;top:0;
    border-radius:20px 0 0 0;padding-top:calc(12px + var(--sat))}
}

/* ---------- larger screens: keep the UI phone-width, centred ---------- */
@media (min-width:760px){
  #top{left:50%;right:auto;width:min(430px,92vw);transform:translateX(-50%);padding-top:14px}
  #results{left:50%;right:auto;width:min(430px,92vw);transform:translateX(-50%)}
  #panel{left:50%;right:auto;width:min(430px,92vw);transform:translateX(-50%);
    background:linear-gradient(#0b0e1300,#0b0e13cc 22%,#0b0e13f2)}
  .sheet{left:50%;right:auto;width:min(480px,94vw);transform:translateX(-50%);
    border-radius:20px 20px 0 0}
  @media (orientation:landscape) and (max-height:520px){
    #top,#results,#panel,.sheet{left:auto;right:0;transform:none}
  }
}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;
    transition-duration:.01ms!important}
  #alert{animation:none;outline:2px solid #fff;outline-offset:-4px}
}