:root{
  --bg:#ffffff;
  --ink:#10171c;
  --muted:#65727b;
  --line:#e7ebee;
  --soft:#f4f6f8;
  --soft-2:#eef1f4;
  --accent:#2b59ff;
  --accent-ink:#1c40c8;
  --car:#2b59ff;
  --transit:#7b3ff2;
  --bike:#15a34a;
  --foot:#0d9488;
  --shadow:0 1px 2px rgba(16,23,28,.04),0 8px 24px rgba(16,23,28,.07);
  --radius:12px;
  font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
button{font-family:inherit}

#app{display:grid;grid-template-columns:392px 1fr;height:100vh;width:100vw;overflow:hidden}

/* ---------- Sidebar ---------- */
#panel{display:flex;flex-direction:column;height:100vh;border-right:1px solid var(--line);background:var(--bg);z-index:5}
.brand{display:flex;align-items:center;gap:11px;padding:18px 20px 14px}
.brand-mark{width:30px;height:30px;flex:none;border-radius:7px;object-fit:cover;box-shadow:0 1px 3px rgba(16,23,28,.2)}
.brand-about{margin-left:auto;display:inline-flex;align-items:center;gap:5px;font-size:12.5px;font-weight:500;color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:6px 11px;text-decoration:none;transition:background .15s,color .15s,border-color .15s}
.brand-about:hover{background:var(--soft);color:var(--accent);border-color:#cfd6dd}
.brand-about svg{opacity:.7}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:20px;font-weight:600;letter-spacing:-.02em}
.brand-by{font-size:11px;color:var(--muted);font-weight:400;letter-spacing:.01em}

.trip{padding:4px 20px 14px;border-bottom:1px solid var(--line)}
.field-stack{position:relative;padding-left:22px}
.rail{position:absolute;left:7px;top:18px;bottom:18px;display:flex;flex-direction:column;align-items:center}
.dot{width:9px;height:9px;border-radius:50%}
.dot-a{background:#19a05a;box-shadow:0 0 0 3px rgba(25,160,90,.14)}
.dot-b{background:var(--accent);box-shadow:0 0 0 3px rgba(43,89,255,.14)}
.rail-line{flex:1;width:2px;margin:5px 0;background:repeating-linear-gradient(var(--line) 0 3px,transparent 3px 7px)}

.field{position:relative;margin:8px 0}
.loc-input{width:100%;height:46px;padding:0 40px 0 14px;border:1px solid var(--line);border-radius:var(--radius);background:var(--soft);font-size:14.5px;color:var(--ink);outline:none;transition:border-color .15s,background .15s,box-shadow .15s}
.loc-input::placeholder{color:#9aa6ad}
.loc-input:focus{background:#fff;border-color:var(--accent);box-shadow:0 0 0 3px rgba(43,89,255,.12)}

.mini-btn{position:absolute;right:7px;top:7px;width:32px;height:32px;display:grid;place-items:center;border:none;border-radius:8px;background:transparent;color:var(--muted);cursor:pointer}
.mini-btn:hover{background:var(--soft-2);color:var(--accent)}

.swap-btn{position:absolute;right:-2px;top:50%;transform:translateY(-50%);width:34px;height:34px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--muted);cursor:pointer;display:grid;place-items:center;box-shadow:var(--shadow);transition:color .15s,transform .15s}
.swap-btn:hover{color:var(--accent)}
.swap-btn:active{transform:translateY(-50%) rotate(180deg)}

/* suggestions */
.suggest{position:absolute;top:50px;left:0;right:0;margin:0;padding:6px;list-style:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);z-index:20;display:none;max-height:280px;overflow:auto}
.suggest.open{display:block}
.suggest li{padding:9px 10px;border-radius:8px;cursor:pointer;display:flex;gap:10px;align-items:flex-start}
.suggest li:hover,.suggest li.active{background:var(--soft)}
.suggest .s-pin{flex:none;margin-top:1px;color:var(--muted)}
.suggest .s-name{font-size:14px;font-weight:500;line-height:1.25}
.suggest .s-sub{font-size:12px;color:var(--muted);line-height:1.2}

/* modes */
.modes{display:grid;grid-template-columns:repeat(4,1fr);gap:7px;margin-top:14px}
.mode{display:flex;flex-direction:column;align-items:center;gap:5px;padding:10px 4px 8px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;color:var(--muted);cursor:pointer;transition:border-color .15s,color .15s,background .15s}
.mode:hover{background:var(--soft)}
.mode .mode-ic{width:22px;height:22px}
.mode .mode-time{font-size:12.5px;font-weight:600;color:var(--ink);min-height:15px}
.mode[aria-selected="true"]{border-color:var(--accent);background:rgba(43,89,255,.05);color:var(--accent)}
.mode[aria-selected="true"] .mode-time{color:var(--accent-ink)}
.mode[data-mode="transit"][aria-selected="true"]{border-color:var(--transit);background:rgba(123,63,242,.06);color:var(--transit)}
.mode[data-mode="bike"][aria-selected="true"]{border-color:var(--bike);background:rgba(21,163,74,.06);color:var(--bike)}
.mode[data-mode="foot"][aria-selected="true"]{border-color:var(--foot);background:rgba(13,148,136,.06);color:var(--foot)}
.mode.loading .mode-time{color:var(--muted);opacity:.5}

/* results */
.results{flex:1;overflow-y:auto;padding:6px 20px 20px}
.placeholder{color:var(--muted);font-size:14px;line-height:1.55;padding:24px 4px}
.placeholder strong{color:var(--ink);font-weight:600}

.summary{display:flex;align-items:baseline;gap:10px;padding:16px 2px 12px;border-bottom:1px solid var(--line)}
.summary .big{font-size:26px;font-weight:600;letter-spacing:-.02em}
.summary .dist{font-size:14px;color:var(--muted)}
.summary .via{font-size:12.5px;color:var(--muted);margin-left:auto;text-align:right;max-width:46%}

.steps{list-style:none;margin:0;padding:8px 0 0}
.steps li{display:flex;gap:12px;padding:11px 2px;border-bottom:1px solid var(--soft)}
.steps .st-ic{flex:none;width:26px;height:26px;border-radius:7px;background:var(--soft);display:grid;place-items:center;color:var(--muted)}
.steps .st-txt{font-size:13.5px;line-height:1.35}
.steps .st-sub{font-size:12px;color:var(--muted);margin-top:2px}

/* transit itineraries */
.itins{list-style:none;margin:0;padding:6px 0 0}
.itin{border:1px solid var(--line);border-radius:var(--radius);padding:12px 13px;margin:10px 0;cursor:pointer;transition:border-color .15s,box-shadow .15s}
.itin:hover{border-color:#cfd7dd}
.itin.sel{border-color:var(--transit);box-shadow:0 0 0 3px rgba(123,63,242,.1)}
.itin-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.itin-time{font-size:16px;font-weight:600}
.itin-meta{font-size:12.5px;color:var(--muted)}
.legs-row{display:flex;align-items:center;flex-wrap:wrap;gap:5px;margin-top:9px}
.leg-badge{display:inline-flex;align-items:center;gap:5px;height:24px;padding:0 8px;border-radius:7px;font-size:12px;font-weight:600;color:#fff;background:var(--transit)}
.leg-badge.walk{background:var(--soft-2);color:var(--muted);font-weight:500}
.leg-badge .lb-ic{width:14px;height:14px}
.leg-arrow{color:#c2cad0;font-size:11px}
.itin-detail{display:none;margin-top:10px;padding-top:6px;border-top:1px solid var(--soft)}
.itin.sel .itin-detail{display:block}
.tleg{display:flex;gap:11px;padding:9px 0}
.tleg .tl-line{flex:none;width:24px;display:flex;justify-content:center}
.tl-bar{width:4px;border-radius:3px;background:var(--soft-2)}
.tleg .tl-body{font-size:13px;line-height:1.4}
.tleg .tl-head{font-weight:600}
.tleg .tl-sub{font-size:12px;color:var(--muted);margin-top:1px}

.err{margin:18px 2px;padding:13px 14px;background:#fff5f4;border:1px solid #ffd9d4;border-radius:var(--radius);color:#b4261a;font-size:13px;line-height:1.45}
.note{margin:14px 2px;padding:12px 13px;background:var(--soft);border-radius:var(--radius);color:var(--muted);font-size:13px;line-height:1.45}

.panel-foot{padding:10px 20px;border-top:1px solid var(--line);font-size:11px;color:#9aa6ad}

/* ---------- Map ---------- */
#map{position:relative;height:100vh}
.maplibregl-ctrl-attrib{font-size:10px}
.map-hint{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);background:rgba(16,23,28,.82);color:#fff;font-size:12.5px;padding:7px 14px;border-radius:999px;z-index:4;pointer-events:none;opacity:0;transition:opacity .3s}
.map-hint.show{opacity:1}

/* map colour switcher */
.style-switch{position:absolute;left:14px;bottom:16px;z-index:4;display:flex;align-items:center;gap:2px;padding:4px;background:rgba(255,255,255,.94);backdrop-filter:saturate(150%) blur(8px);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow)}
.ss-label{font-size:11px;font-weight:600;color:var(--muted);padding:0 7px 0 5px;letter-spacing:.04em;text-transform:uppercase}
.ss-btn{border:none;background:transparent;color:var(--muted);font-size:12.5px;font-weight:500;padding:6px 11px;border-radius:8px;cursor:pointer;transition:background .15s,color .15s}
.ss-btn:hover{background:var(--soft)}
.ss-btn.active{background:var(--accent);color:#fff}
@media (max-width:760px){.style-switch{left:8px;bottom:8px;flex-wrap:wrap;max-width:64vw;gap:1px}.ss-label{display:none}.ss-btn{padding:5px 9px;font-size:12px}}

/* markers */
.mk{width:26px;height:34px;transform:translateY(-4px)}
.mk svg{filter:drop-shadow(0 2px 3px rgba(16,23,28,.3))}

.spin{display:inline-block;width:13px;height:13px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;animation:sp .7s linear infinite;vertical-align:-2px}
@keyframes sp{to{transform:rotate(360deg)}}

/* ---------- Responsive ---------- */
@media (max-width:760px){
  #app{grid-template-columns:1fr;grid-template-rows:46vh 54vh}
  #panel{height:auto;order:2;border-right:none;border-top:1px solid var(--line)}
  #map{height:auto;order:1}
  .map-hint{bottom:auto;top:14px}
  .results{max-height:none}
}