:root{
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1b1f24;
  --muted: #5a6773;
  --border: rgba(0,0,0,.10);
  --shadow: 0 10px 30px rgba(0,0,0,.06);
  --primary: #3a6ea5;
  --primary-2: #2f5f8e;

  --focus: rgba(58, 110, 165, .35);
  --input-bg: #fbfbfc;
  --code-bg: rgba(0,0,0,.05);
}

[data-theme="dark"]{
  --bg: #0f1115;
  --card: #171a21;
  --text: #e8edf4;
  --muted: #a6b0bd;
  --border: rgba(255,255,255,.12);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --primary: #67a3ff;
  --primary-2: #3b7fd9;

  --focus: rgba(103, 163, 255, .35);
  --input-bg: #12141b;
  --code-bg: rgba(255,255,255,.06);
}

*{ box-sizing: border-box; }
html{ height: 100%; }
body{
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
}

.sr-only{
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border: 0;
}

.topbar{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: color-mix(in oklab, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
  padding: 14px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.logo{
  width: 70px;
  height: auto;
  border-radius: 90px;
  display: grid;
  place-items: center;
  display: block;
}

.container{
  max-width: 980px;
  padding: 18px;
  margin: 0 auto;
}

.card{
  background: var(--card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 16px;
  padding: 16px;
}

.h1{ margin: 0 0 6px; font-size: 20px; }
.h2{ margin: 0 0 10px; font-size: 18px; }
.h3{ margin: 0 0 8px; font-size: 15px; }

.muted{ color: var(--muted); }
.small{ font-size: 12px; }

.grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 12px;
}

.grid-2{
  grid-template-columns: 1fr 1fr;
}

@media (min-width: 760px){
  .grid{
    grid-template-columns: 1fr 1fr;
  }
  .grid .field:nth-child(5),
  .grid .field:nth-child(4){
    grid-column: span 1;
  }
}

.field label{
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
}

.field input{
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  outline: none;
}

.field input:focus{
  box-shadow: 0 0 0 4px var(--focus);
  border-color: color-mix(in oklab, var(--primary) 55%, var(--border));
}

.hint{
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.actions{
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 2px;
  grid-column: 1 / -1;
}

.btn{
  border: 1px solid transparent;
  background: var(--primary);
  color: white;
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  font-weight: 800;
}

.btn:hover{ background: var(--primary-2); }

.btn-secondary{
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn-secondary:hover{
  background: color-mix(in oklab, var(--primary) 10%, var(--card));
}

.theme-wrap{ display: flex; align-items: center; gap: 10px; }
.theme-select{
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--input-bg);
  color: var(--text);
  font-weight: 700;
}

.results{ margin-top: 14px; }

.result-grid{
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@media (min-width: 820px){
  .result-grid{
    grid-template-columns: 1fr 1fr 1fr;
  }
}

.result-item{
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--card) 92%, transparent);
  border-radius: 14px;
  padding: 12px;
}

.result-item .label{
  font-size: 12px;
  color: var(--muted);
  font-weight: 800;
  letter-spacing: .2px;
  margin-bottom: 8px;
}

.result-item .value{
  font-size: 26px;
  font-weight: 900;
  line-height: 1.05;
}

.result-item.highlight .value{
  color: var(--primary);
}

.divider{
  height: 1px;
  background: var(--border);
  margin: 14px 0;
}

.subsection{
  margin-top: 6px;
}

.roll-results{
  margin-top: 10px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 820px){
  .roll-results{
    grid-template-columns: 1fr 1fr;
  }
}

.roll-item{
  border: 1px dashed var(--border);
  border-radius: 14px;
  padding: 12px;
  background: color-mix(in oklab, var(--card) 95%, transparent);
}

.footer{
  padding: 10px 6px 26px;
  text-align: center;
  font-size: 12px;
}