/* Palette: teal, red and yellow in the spirit of a supermarket promotion, plus orange and pink from the sticker books. */
:root{--bg:#F1F8F8;--card:#fff;--ink:#14282D;--mute:#58707A;--line:#D8E7E8;
  --brand:#00808A;--brand-d:#00666F;--brand2:#E0F3F4;--on-brand:#fff;
  --accent:#D8281E;--sun:#FFCE1F;--warn:#9A4A00;--warn2:#FFF1C9;--bad:#C0251B;--bad2:#FDE6E3;
  --r:18px;--shadow:0 1px 2px rgba(0,60,70,.06),0 8px 22px rgba(0,60,70,.08)}
html.dark{--bg:#0D191C;--card:#152327;--ink:#EAF4F5;--mute:#92AAAF;--line:#243A3F;
  --brand:#3CC4CE;--brand-d:#2BAAB4;--brand2:#12353A;--on-brand:#052428;
  --accent:#FF6A5E;--sun:#FFD64A;--warn:#F0B050;--warn2:#3A2E10;--bad:#FF8A80;--bad2:#3D1F1C;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 22px rgba(0,0,0,.3);color-scheme:dark}
html{color-scheme:light}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 "Trebuchet MS",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;overflow-x:hidden;padding-bottom:env(safe-area-inset-bottom)}
img,svg{max-width:100%}
a{color:var(--brand-d)}
:where(html.dark) a{color:var(--brand)}

/* ---- header ---- */
header{position:sticky;top:0;z-index:5;background:linear-gradient(110deg,#00626B,#00959F);color:#fff;display:flex;align-items:center;gap:6px;padding:8px 16px;padding-top:max(8px,env(safe-area-inset-top));flex-wrap:wrap;margin-bottom:8px;box-shadow:0 4px 14px rgba(0,70,80,.25)}
header::after{content:"";position:absolute;left:0;right:0;bottom:-8px;height:8px;background:repeating-conic-gradient(var(--accent) 0 25%,#fff 0 50%) 0 0/16px 16px;pointer-events:none}
header .logo{display:flex;align-items:center;gap:8px;margin-right:auto;font-weight:800;font-size:19px;color:#fff;text-decoration:none;padding:4px 0;letter-spacing:.2px}
header .logo small{display:block;font-size:10px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;opacity:.85;line-height:1}
header .logo span{line-height:1.05}
header nav{display:flex;flex-wrap:wrap;gap:4px;align-items:center}
header nav a{color:#fff;text-decoration:none;padding:7px 10px;border-radius:999px;font-size:14px;font-weight:600;opacity:.95}
header nav a:hover{background:rgba(255,255,255,.18)}
header nav a.on{background:#fff;color:var(--brand-d);opacity:1}
#menuBtn{display:none;background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.5);font-size:22px;line-height:1;padding:8px 14px;min-height:44px;position:relative;box-shadow:none}
.dot{display:inline-block;background:var(--accent);color:#fff;font-size:11px;font-weight:700;min-width:18px;height:18px;line-height:18px;border-radius:9px;text-align:center;padding:0 5px}
#menuBtn .dot{position:absolute;top:-6px;right:-6px}

main{max-width:1000px;margin:0 auto;padding:16px}
h1{font-size:26px;line-height:1.2;margin:4px 0 12px;font-weight:800;letter-spacing:-.2px}
h2{font-size:19px;margin:22px 0 8px;font-weight:800}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;margin-bottom:12px;box-shadow:var(--shadow)}
.muted{color:var(--mute);font-size:14px}.warn{color:var(--warn)}.bad{color:var(--bad)}

/* ---- forms and buttons ---- */
input,select,textarea,button{font:inherit;color:inherit}
input,select,textarea{width:100%;padding:10px 14px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);min-height:44px}
input:focus,select:focus,textarea:focus{outline:3px solid color-mix(in srgb,var(--brand) 35%,transparent);border-color:var(--brand)}
input[type=checkbox],input[type=radio]{min-height:0;accent-color:var(--brand)}
textarea{min-height:0}
label{display:block;font-size:14px;margin:10px 0 4px;color:var(--mute);font-weight:600}
button,.btn{background:var(--brand);color:var(--on-brand);border:0;border-radius:999px;padding:10px 20px;cursor:pointer;font-weight:700;text-decoration:none;display:inline-block;min-height:44px;line-height:1.3;box-shadow:0 2px 0 rgba(0,0,0,.18);transition:transform .08s,filter .15s}
button:hover,.btn:hover{filter:brightness(1.08)}
button:active,.btn:active{transform:translateY(1px);box-shadow:none}
button.ghost{background:transparent;color:var(--brand-d);border:2px solid var(--brand);box-shadow:none}
:where(html.dark) button.ghost{color:var(--brand)}
button.danger{background:var(--bad);color:#fff}
button.sun,.btn.sun{background:var(--sun);color:#3a2b00}
button.sm,.btn.sm{padding:6px 14px;font-size:14px;min-height:38px}
.btn.ghost{background:transparent;color:var(--brand-d);border:2px solid var(--brand);box-shadow:none}
summary{cursor:pointer;min-height:32px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.row>*{flex:0 1 auto}

/* ---- tiles, badges, lists ---- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:14px}
.tile{background:var(--card);border:2px solid var(--line);border-radius:var(--r);padding:8px;display:flex;flex-direction:column;gap:6px;cursor:pointer;box-shadow:var(--shadow);transition:transform .12s,box-shadow .12s}
.tile:hover{transform:translateY(-3px)}
.tile img{width:100%;aspect-ratio:1;object-fit:contain;border-radius:12px;background:var(--bg)}
.tile .n{font-weight:800;font-size:14px;overflow-wrap:anywhere}
.tile.have{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 28%,transparent)}
.tile.need{border-color:var(--sun);box-shadow:0 0 0 3px color-mix(in srgb,var(--sun) 50%,transparent)}
.badge{display:inline-block;font-size:12px;font-weight:700;padding:2px 10px;border-radius:999px;background:var(--brand2);color:var(--brand-d);margin:0 4px 4px 0}
:where(html.dark) .badge{color:var(--brand)}
.badge.w{background:var(--warn2);color:var(--warn)}.badge.r{background:var(--bad2);color:var(--bad)}
.badge.solid{background:var(--brand);color:var(--on-brand)}
.bar{height:10px;background:var(--line);border-radius:99px;overflow:hidden}.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--brand),var(--sun));border-radius:99px}
.list{display:flex;flex-direction:column;gap:8px}
.item{display:flex;gap:12px;align-items:center}.item img{width:56px;height:56px;object-fit:contain;border-radius:12px;background:var(--bg);flex:none}
.item .grow{flex:1;min-width:0;overflow-wrap:anywhere}
a.card:hover{border-color:var(--brand)}
dialog{border:1px solid var(--line);border-radius:var(--r);background:var(--card);color:var(--ink);max-width:460px;width:92%;max-height:90vh;overflow-y:auto;box-shadow:var(--shadow)}
dialog::backdrop{background:#0008}
#toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:999px;opacity:0;transition:.25s;pointer-events:none;z-index:20;max-width:90vw;text-align:center;font-weight:600}
#toast.show{opacity:1}

/* ---- collection cards ---- */
.edcard{display:flex;gap:14px;align-items:center;text-decoration:none;color:inherit}
.edcard .edtext{flex:1;min-width:0}
.edcover{flex:none;width:64px;height:auto;transform:rotate(-5deg);filter:drop-shadow(0 6px 8px rgba(0,60,70,.35))}

/* ---- show / hide password ---- */
.pwwrap{position:relative}
.pwwrap input{padding-right:76px}
.pwshow{position:absolute;right:6px;top:50%;transform:translateY(-50%);min-height:34px;padding:4px 14px;font-size:14px;background:transparent;color:var(--brand-d);border:0;box-shadow:none;border-radius:999px}
:where(html.dark) .pwshow{color:var(--brand)}
.pwshow:hover{background:var(--brand2);filter:none}

.tile[hidden]{display:none}
.searchbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;padding:10px 14px}
.searchbar input{flex:1 1 260px;width:auto}

/* ---- quick tick buttons on each tile ---- */
.howto{margin-bottom:12px}
.qs{display:flex;flex-direction:column;gap:6px;margin-top:auto}
.qbtn{display:flex;align-items:center;gap:8px;width:100%;min-height:42px;padding:6px 10px;border-radius:12px;border:2px solid var(--line);background:var(--card);color:var(--ink);font-weight:700;font-size:14px;box-shadow:none;text-align:left;line-height:1.2}
.qbtn::before{content:"";width:22px;height:22px;flex:none;border-radius:7px;border:2px solid var(--mute);background:var(--card);display:flex;align-items:center;justify-content:center;font-size:15px;color:#fff}
.qbtn.on::before{content:"\2713"}
.qbtn.need.on{border-color:var(--sun);background:var(--warn2)}
.qbtn.need.on::before{background:var(--sun);border-color:var(--sun);color:#3a2b00}
.qbtn.swop.on{border-color:var(--brand);background:var(--brand2)}
.qbtn.swop.on::before{background:var(--brand);border-color:var(--brand);color:var(--on-brand)}
.swoprow{display:flex;flex-direction:column;gap:6px}
.stepline{display:flex;align-items:center;justify-content:space-between;gap:6px;padding:0 2px;font-size:13px;color:var(--mute);font-weight:600}
.stepper{display:flex;align-items:center;gap:2px;flex:none}
.stepper button{min-height:38px;width:36px;padding:0;border-radius:10px;box-shadow:none;font-size:18px}
.stepper b{min-width:20px;text-align:center}

/* ---- hero, how-it-works, empty states ---- */
.hero{position:relative;overflow:hidden;border-radius:24px;padding:22px 24px;margin:4px 0 18px;color:#fff;background:linear-gradient(120deg,#00626B 0%,#00959F 60%,#2FB8C0 100%);box-shadow:var(--shadow);display:grid;grid-template-columns:1fr 1.1fr;gap:12px;align-items:center}
.hero h1{color:#fff;font-size:30px;margin:0 0 6px}
.hero p{margin:0 0 14px;opacity:.95}
.hero .heroart{width:100%;height:auto;max-height:230px}
.collage{position:relative;width:100%;aspect-ratio:640/250}
.collage img{position:absolute;display:block;height:auto}
.collage .card-deco{width:23%;border-radius:16px;border:4px solid #fff;box-shadow:0 8px 20px rgba(0,40,50,.35);background:#fff}
.collage .pack-deco{height:92%;width:auto;left:41%;top:4%;transform:rotate(-5deg);filter:drop-shadow(0 8px 14px rgba(0,40,50,.45));z-index:3}
.collage .d1{left:1%;top:30%;transform:rotate(-9deg);z-index:2}
.collage .d2{left:18%;top:-2%;transform:rotate(7deg);z-index:1}
.collage .d3{left:57%;top:2%;transform:rotate(9deg);z-index:2}
.collage .d4{left:76%;top:38%;transform:rotate(-7deg);z-index:3}
.collage .d5{left:21%;top:52%;transform:rotate(6deg);z-index:3;width:20%}
.collage .d6{left:58%;top:50%;transform:rotate(-4deg);z-index:1;width:20%}
.hero .chip{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.45);color:#fff;padding:6px 14px;border-radius:999px;font-size:14px;font-weight:700;text-decoration:none;margin-top:10px}
.hero .chip b{background:var(--sun);color:#3a2b00;border-radius:999px;padding:0 8px}
.hero.small{grid-template-columns:1fr;text-align:center;padding:18px}
.hero.small .collage{max-width:460px;margin:0 auto}
.how{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:0 0 16px}
.how>div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:12px;box-shadow:var(--shadow)}
.how .num{display:inline-flex;width:28px;height:28px;border-radius:50%;background:var(--sun);color:#3a2b00;font-weight:800;align-items:center;justify-content:center;margin-right:8px}
.empty{text-align:center;padding:26px 12px}
.empty .emptyart{width:150px;height:auto;margin-bottom:6px}
.empty .emptypack{display:block;margin:0 auto 8px;width:70px;height:auto;filter:drop-shadow(0 6px 8px rgba(0,60,70,.3));transform:rotate(-6deg)}
.empty p{margin:4px 0 0}
.auth{max-width:400px;margin:18px auto}

/* ---- footer ---- */
footer#foot{text-align:center;color:var(--mute);font-size:13px;padding:26px 16px calc(28px + env(safe-area-inset-bottom));margin-top:28px;position:relative}
footer#foot::before{content:"";position:absolute;left:0;right:0;top:0;height:8px;background:repeating-conic-gradient(var(--accent) 0 25%,var(--card) 0 50%) 0 0/16px 16px;opacity:.9}
footer#foot img{display:block;margin:4px auto 6px;height:auto;max-width:110px}
footer#foot .fine{max-width:560px;margin:0 auto 10px;font-size:12px}
:where(html.dark) footer#foot img{background:#faf8ee;border-radius:14px;padding:8px}

/* ---- phones and small tablets ---- */
@media(max-width:760px){
  main{padding:12px}
  header{padding:6px 12px;padding-top:max(6px,env(safe-area-inset-top))}
  #menuBtn{display:block}
  header nav{display:none;flex-basis:100%;flex-direction:column;align-items:stretch;gap:0;padding:6px 0 10px}
  header.open nav{display:flex}
  header nav a{padding:13px 12px;font-size:16px;border-radius:10px;border-bottom:1px solid rgba(255,255,255,.2)}
  h1{font-size:22px}
  .hero{grid-template-columns:1fr;padding:18px;text-align:left}
  .hero h1{font-size:24px}
  .hero .heroart{max-height:170px;order:-1}
  .hero .collage{order:-1;max-width:300px;margin:0 auto}
  .hero{padding:14px 16px;gap:8px;margin-bottom:12px}
  .hero p{font-size:15px;margin-bottom:10px}
  .hero .chip{margin-top:6px}
  .how{grid-template-columns:1fr}
  .grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .tile{padding:6px}
  .card.row>*,.card .row>input,.card .row>select{flex:1 1 100%}
  input[style*="max-width"],select[style*="max-width"]{max-width:none!important}
  input[type=number][style*="width"]{width:100%!important}
  .row{gap:8px}
  .item{gap:10px}.item img{width:48px;height:48px}
  .auth{margin:12px auto}
  dialog{width:96%;max-height:92vh;padding:14px}
  button,.btn{min-height:46px}
  .brush{flex:1 1 40%}
}
@media(max-width:380px){.grid{gap:8px}.tile .n{font-size:13px}}

/* ---- appearance switch in the footer ---- */
.themebar{display:flex;gap:6px;justify-content:center;align-items:center;margin-bottom:12px;font-size:13px}
.themebar button{min-height:32px;padding:3px 12px;font-size:13px;background:transparent;color:var(--brand-d);border:1.5px solid var(--line);box-shadow:none}
html.dark .themebar button{color:var(--brand)}
.themebar button[aria-pressed=true]{background:var(--brand);color:var(--on-brand);border-color:var(--brand)}