:root{--green:#157a4d;--green2:#0f6b42;--mint:#eafff3;--cyan:#29b8c8;--orange:#f58220;--dark:#143225;--muted:#607080;--line:#d8eadf;--card:#ffffff;--shadow:0 12px 32px rgba(12,73,43,.12)}
*{box-sizing:border-box} html{scroll-behavior:smooth} body{margin:0;font-family:Arial,Helvetica,sans-serif;background:linear-gradient(180deg,#f2fff8,#ffffff);color:var(--dark);line-height:1.55;padding-bottom:72px} a{color:inherit} .wrap{width:min(1120px,calc(100% - 28px));margin:auto}
.top{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)} .nav{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 0} .brand{display:flex;align-items:center;text-decoration:none;min-width:0} .brand img{height:38px;width:auto;display:block} .navlinks{display:flex;gap:8px;align-items:center;overflow-x:auto;padding:4px 0} .pill{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:9px 16px;border-radius:999px;background:#effdf5;border:1px solid #bbf7d0;color:#12613d;text-decoration:none;font-weight:800;white-space:nowrap} .pill.primary{background:var(--green);color:#fff;border-color:var(--green)}
.hero{padding:28px 0 16px} .hero-card{background:#fff;border:1px solid var(--line);border-radius:28px;box-shadow:var(--shadow);padding:24px;overflow:hidden} .hero-grid{display:grid;grid-template-columns:1fr .9fr;gap:18px;align-items:center} .hero h1{font-size:clamp(30px,5vw,58px);line-height:1.04;margin:10px 0;color:#125d3a} .hero p{font-size:18px;color:#4b6572;margin:0 0 18px} .hero-img{width:100%;max-height:350px;object-fit:contain} .logo-hero{width:min(420px,100%);height:auto;margin-bottom:8px} .badge{display:inline-flex;align-items:center;padding:7px 12px;border-radius:999px;background:#dffbe9;color:#14623d;font-weight:900;font-size:13px}
.section{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:20px;margin:18px auto} .section h2{margin:0 0 10px;font-size:24px;color:#124c32} .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px} .card{display:block;padding:18px;border:1px solid var(--line);border-radius:20px;background:#fff;text-decoration:none;box-shadow:0 6px 18px rgba(12,73,43,.06)} .card b{display:block;font-size:19px;color:#0f6b42;margin-bottom:5px} .card span{color:#617184} .card:hover{transform:translateY(-1px)}
.mapbox{overflow:hidden} .map-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;flex-wrap:wrap} .map-actions{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0} button,.button{min-height:44px;border:0;border-radius:999px;background:var(--green);color:#fff;font-weight:900;padding:10px 15px;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center} button.secondary,.button.secondary{background:#eefcf4;color:#12613d;border:1px solid #bdeccf} .map-viewport{height:430px;border:1px solid #bdeccf;border-radius:24px;overflow:hidden;background:linear-gradient(135deg,#eafff3,#eaf7ff);touch-action:none;position:relative;cursor:grab} .map-canvas{position:relative;width:100%;height:100%;transform-origin:50% 50%;transition:transform .18s ease} .map-svg,.route-line{position:absolute;inset:0;width:100%;height:100%} #pinsLayer{position:absolute;inset:0} .pin{position:absolute;transform:translate(-50%,-100%);text-align:center;text-decoration:none;z-index:3} .pin-dot{width:38px;height:38px;border-radius:50% 50% 50% 0;transform:rotate(-45deg);background:var(--orange);border:3px solid #fff;box-shadow:0 6px 14px rgba(0,0,0,.2);display:grid;place-items:center} .pin-dot span{transform:rotate(45deg);color:#fff;font-weight:900;font-size:14px} .pin.trail .pin-dot{background:var(--cyan);width:44px;height:44px} .pin-label{margin-top:4px;padding:3px 7px;background:#fff;border:1px solid var(--line);border-radius:999px;font-size:12px;font-weight:900;white-space:nowrap;box-shadow:0 4px 10px rgba(0,0,0,.09)} .user-pin{position:absolute;width:18px;height:18px;border-radius:50%;background:#2563eb;border:4px solid #fff;box-shadow:0 0 0 8px rgba(37,99,235,.2);transform:translate(-50%,-50%);z-index:5} .status{background:#f8fafc;border:1px solid #dbe7ef;border-radius:16px;padding:10px;color:#53687a}
.mobile-bottom{position:fixed;bottom:0;left:0;right:0;z-index:30;background:#fff;border-top:1px solid var(--line);display:none;justify-content:space-around;padding:8px 6px} .mobile-bottom a{text-decoration:none;font-weight:900;color:#12613d;font-size:13px;padding:8px 10px;border-radius:999px} .mobile-bottom a.active{background:var(--green);color:#fff}
.task-shell{padding:20px 0} .task-nav{display:flex;gap:8px;overflow-x:auto;margin-bottom:12px;padding-bottom:4px} .task-nav a{flex:0 0 auto} .task-container{background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);padding:8px} .fix-note{margin:0 0 12px;padding:10px 12px;border:1px solid #bbf7d0;background:#effdf5;border-radius:14px;color:#12613d;font-weight:900}
.teacher-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px} label{font-weight:800;color:#244b39} input,textarea,select{font:inherit} .admin-form input,.admin-form textarea{width:100%;min-height:44px;border:1.5px solid #cbd5e1;border-radius:12px;padding:10px;margin:5px 0 12px} .admin-form textarea{min-height:84px}
footer{text-align:center;color:#607080;padding:24px}
@media(max-width:760px){body{padding-bottom:78px} .wrap{width:min(100% - 20px,1120px)} .top .nav{align-items:center} .brand img{height:32px} .navlinks{gap:6px} .navlinks .pill{padding:8px 12px;min-height:38px;font-size:14px} .hero{padding-top:16px} .hero-card{padding:16px;border-radius:22px} .hero-grid{grid-template-columns:1fr} .hero p{font-size:16px} .hero-img{max-height:230px} .section{padding:16px;border-radius:20px;margin:12px auto} .cards{grid-template-columns:1fr} .map-viewport{height:62vh;min-height:380px} .map-actions button{flex:1 1 30%;font-size:13px;padding:9px 10px} .mobile-bottom{display:flex} .teacher-grid{grid-template-columns:1fr} .task-container{padding:0;border-radius:18px;overflow:hidden} .pin-label{font-size:11px} }
@media(max-width:720px){ .stem-task1,.stem-task2,.stem-task3,.stem-task4,.stem-task5,.stem-task6{margin:0!important;box-shadow:none!important;border-radius:16px!important;padding:16px!important} }

.map-viewport:active{cursor:grabbing}.route-line{pointer-events:none}.pin:focus{outline:3px solid #f59e0b;outline-offset:6px}.pin:hover .pin-label{background:#ecfeff}


/* V13 Leaflet internal map */
.leaflet-wrap{border:1px solid rgba(15,23,42,.12);border-radius:24px;overflow:hidden;background:#e9f7ef;box-shadow:0 18px 45px rgba(15,23,42,.10)}
.leaflet-map{height:min(68vh,620px);min-height:420px;width:100%;z-index:1}
.leaflet-map.small{height:360px;min-height:300px}
.map-toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin:14px 0 12px}
.map-toolbar button,.map-toolbar a{border:0;border-radius:999px;padding:10px 14px;font-weight:800;cursor:pointer;background:#0ea5e9;color:#fff;text-decoration:none;box-shadow:0 7px 18px rgba(14,165,233,.25)}
.map-toolbar button.secondary,.map-toolbar a.secondary{background:#ecfeff;color:#075985;border:1px solid #bae6fd;box-shadow:none}
.map-note{margin:10px 0 0;color:#475569;font-size:14px}.map-note b{color:#0f766e}
.map-status{margin:10px 0 0;padding:10px 12px;border-radius:14px;background:#f0fdf4;border:1px solid #bbf7d0;color:#166534;font-weight:700}
.custom-pin{display:grid;place-items:center;width:34px;height:34px;border-radius:999px;background:#f97316;color:white;border:3px solid white;box-shadow:0 7px 20px rgba(15,23,42,.25);font-weight:900}.custom-pin.trail{background:#0f766e}.custom-pin.user{background:#2563eb;animation:pulseUser 1.4s infinite}.custom-pin small{font-size:12px}
@keyframes pulseUser{0%{box-shadow:0 0 0 0 rgba(37,99,235,.45)}70%{box-shadow:0 0 0 16px rgba(37,99,235,0)}100%{box-shadow:0 0 0 0 rgba(37,99,235,0)}}
@media(max-width:680px){.leaflet-map{height:62vh;min-height:360px}.leaflet-map.small{height:320px}.map-toolbar button,.map-toolbar a{padding:9px 11px;font-size:13px}}


/* V17 print support for trail paper maps */
@media print{
  body{background:#fff!important;color:#111!important;padding-bottom:0!important}
  .top,.mobile-bottom,footer,.map-toolbar,.navlinks{display:none!important}
  .wrap{width:100%!important;max-width:none!important;margin:0!important}
  .hero,.section{box-shadow:none!important;border:1px solid #ddd!important;border-radius:12px!important;break-inside:avoid;margin:10px 0!important;padding:14px!important}
  .hero-card{box-shadow:none!important;border:0!important;padding:0!important}
  .hero-grid{grid-template-columns:1fr 180px!important;gap:12px!important}
  .hero-img{max-height:160px!important}
  .logo-hero{max-width:260px!important}
  .leaflet-wrap{box-shadow:none!important;border:1px solid #aaa!important;border-radius:8px!important;break-inside:avoid}
  .leaflet-map{height:155mm!important;min-height:155mm!important}
  .cards{grid-template-columns:repeat(2,1fr)!important;gap:8px!important}
  .card{box-shadow:none!important;border:1px solid #ddd!important;padding:10px!important}
  .map-note,.map-status{font-size:12px!important;color:#222!important;background:#fff!important;border:1px solid #ddd!important}
  @page{size:A4 portrait;margin:10mm}
}