/* Shared look for our own screens: ruled paper, ballpoint ink, chalk dust. */
:root{
  --ink:#24408f; --ink-soft:#5b76b8; --red:#c8452f; --pencil:#3a3a42;
  --paper:#f6f1e2; --rule:#c3d4ea; --margin:#e2a09a;
  --board:#2f4038; --wood:#a9743f;
}
*{box-sizing:border-box}
body{
  margin:0; min-height:100vh; padding:24px 16px 56px;
  font-family:'Patrick Hand',ui-rounded,'Comic Sans MS',cursive;
  color:var(--ink); background:#463f38;
  background-image:radial-gradient(ellipse at 50% 35%,#5b5149 0%,#332e29 100%);
  display:flex; flex-direction:column; align-items:center; gap:18px;
}
.sheet{
  width:min(560px,100%); background:var(--paper); color:var(--ink);
  padding:26px 26px 30px; position:relative; border-radius:2px;
  background-image:repeating-linear-gradient(transparent 0 31px,var(--rule) 31px 32px);
  box-shadow:0 18px 40px rgba(0,0,0,.45),0 2px 0 rgba(0,0,0,.2);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),96% 100%,92% calc(100% - 7px),
    88% 100%,84% calc(100% - 6px),80% 100%,76% calc(100% - 7px),72% 100%,
    68% calc(100% - 6px),64% 100%,60% calc(100% - 7px),56% 100%,52% calc(100% - 6px),
    48% 100%,44% calc(100% - 7px),40% 100%,36% calc(100% - 6px),32% 100%,
    28% calc(100% - 7px),24% 100%,20% calc(100% - 6px),16% 100%,12% calc(100% - 7px),
    8% 100%,4% calc(100% - 6px),0 100%);
}
.sheet::before{
  content:""; position:absolute; inset:0 auto 0 44px; width:2px;
  background:var(--margin); opacity:.75;
}
h1,h2{font-family:Anton,Impact,sans-serif; letter-spacing:.5px; margin:0 0 4px;
  text-transform:uppercase}
h1{font-size:30px} h2{font-size:20px}
.sub{color:var(--ink-soft); margin:0 0 18px; font-size:17px}
label{display:block; font-size:15px; color:var(--ink-soft); margin:14px 0 5px;
  text-transform:uppercase; letter-spacing:1.5px}
input{
  width:100%; padding:11px 12px; font:inherit; font-size:19px; color:var(--ink);
  background:transparent; border:0; border-bottom:2px solid var(--rule); outline:0;
}
input:focus{border-bottom-color:var(--ink)}
.btn{
  display:block; width:100%; margin-top:18px; padding:14px; cursor:pointer;
  font-family:Anton,Impact,sans-serif; font-size:21px; letter-spacing:1px;
  text-transform:uppercase; color:#fff; background:var(--red);
  border:0; border-radius:3px; box-shadow:0 4px 0 #93301f;
}
.btn:active{transform:translateY(3px); box-shadow:0 1px 0 #93301f}
.btn.ghost{background:transparent; color:var(--ink); box-shadow:none;
  border:2px solid var(--ink); border-radius:4px}
.btn[disabled]{opacity:.45; cursor:not-allowed}
.row{display:flex; gap:10px; flex-wrap:wrap}
.row .btn{flex:1; margin-top:0}
.chip{
  padding:9px 15px; cursor:pointer; font:inherit; font-size:18px; color:var(--ink);
  background:transparent; border:2px solid var(--rule); border-radius:20px;
}
.chip[aria-pressed="true"]{border-color:var(--ink); background:#e8eefb}
.bal{
  display:flex; justify-content:space-between; align-items:baseline;
  border-bottom:2px dashed var(--rule); padding-bottom:10px; margin-bottom:6px;
}
.bal b{font-family:Anton,Impact,sans-serif; font-size:32px}
.note{font-size:15px; color:var(--ink-soft); line-height:1.5}
.warn{
  width:min(560px,100%); padding:11px 15px; border-radius:3px; font-size:15px;
  color:#4a2c05; background:#f6dfa8; border:1px solid #d9b567;
}
.err{color:var(--red); font-size:16px; min-height:20px; margin-top:8px}
.code{
  font-family:Anton,Impact,sans-serif; font-size:40px; letter-spacing:7px;
  text-align:center; color:var(--red); margin:6px 0;
}
.hist{list-style:none; margin:8px 0 0; padding:0; font-size:16px}
.hist li{display:flex; justify-content:space-between; padding:5px 0;
  border-bottom:1px dotted var(--rule)}
.hist .plus{color:#1d7a3e} .hist .minus{color:var(--red)}
a.plain{color:var(--ink-soft)}
.hide{display:none !important}