:root {
    --bg0: #0b1220;
    --bg1: #0f1b2d;
    --card: rgba(255,255,255,.06);
    --card2: rgba(255,255,255,.10);
    --text: #e9eefc;
    --muted: rgba(233,238,252,.65);
    --accent: #7c5cff; /* purple accent */
    --good: #ffd84d; /* yellow-ish number */
    --shadow: 0 18px 50px rgba(0,0,0,.45);
    --radius: 22px;
    --separator: rgba(255,255,255,.1);
    --cell-bg: rgba(0,0,0,.25)
}

/* Global base */
html, body {
    height: 100%;
    margin: 0;
    font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Apple Color Emoji","Segoe UI Emoji";
    color: var(--text);
}

body {
    display: flex;
    flex-direction: column; /* prevent horizontal shrink */
    min-height: 100vh;
    width: 100vw; /* ensure full viewport width */
    align-items: center;
    justify-content: center;
    padding: 32px 16px;
    background: radial-gradient(1200px 600px at 50% -10%, rgba(124,92,255,.35), transparent 60%), linear-gradient(180deg, var(--bg0), var(--bg1));
}

/* Card container */
.card {
    display: block;
    width: fit-content;
    min-height: 360px;
    background: linear-gradient(180deg, var(--card), rgba(255,255,255,.03));
    border: 1px solid rgba(255,255,255,.10);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 28px 26px;
    backdrop-filter: blur(10px);
    text-align: center;
}

.title{
  font-size: 34px;
  letter-spacing: .4px;
  margin: 4px 0 18px;
  color: rgba(233,238,252,.85);
  font-weight: 600;
}

.value {
    font-size: 92px;
    line-height: 1;
    margin: 8px 0 18px;
    font-weight: 750;
    color: rgb(var(--dynamic-text-color, var(--good-rgb, 255,216,77)));
    text-shadow: 0 10px 30px rgba(255,216,77,.10);
    min-height: 92px;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  border: 0;
  border-radius: 14px;
  padding: 12px 18px;
  font-weight: 650;
  cursor:pointer;
  background: linear-gradient(135deg, var(--accent), #4da3ff);
  color: white;
  box-shadow: 0 14px 35px rgba(124,92,255,.25);
  max-width: 100px;
  transform: translateY(0);
  transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
}
.btn:hover{
  transform: translateY(-1px);
  filter: brightness(1.03);
  box-shadow: 0 18px 45px rgba(124,92,255,.30);
}
.btn:active{
  transform: translateY(1px);
  box-shadow: 0 10px 25px rgba(124,92,255,.20);
}

.divider{
  height: 1px;
  background: rgba(255,255,255,.10);
  margin: 22px 0;
}

.label{
  color: var(--muted);
  font-size: 14px;
  letter-spacing: .35px;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.avg {
    font-size: 44px;
    font-weight: 750;
    color: rgb(var(--dynamic-text-color, var(--good-rgb, 255,216,77)));
    min-height: 66px;
}

.hint{
  margin-top: 16px;
  color: rgba(233,238,252,.55);
  font-size: 13px;
}

/* 10x10 cell field: 4x4px black cells separated by 1px gray lines */
.cell-grid {
    --cells: 50;
    --cell-size: 10px;
    --gap: 1px; /* separator thickness */

    display: grid;
    grid-template-columns: repeat(var(--cells), var(--cell-size));
    grid-auto-rows: var(--cell-size);
    gap: var(--gap);
    /* Add an outer border equal to gap so outer edges look like separators too */
    padding: var(--gap);
    background: var(--separator);
    width: calc(var(--cells) * var(--cell-size) + (var(--cells) - 1) * var(--gap) + 2 * var(--gap));
    margin: 0 auto 18px;
}
.cell {
    width: var(--cell-size);
    height: var(--cell-size);
    background: var(--cell-bg);
}
.red-cell {
  width: var(--cell-size);
  height: var(--cell-size);
  background: #ff3b3b;
}
.green-cell {
  width: var(--cell-size);
  height: var(--cell-size);
  background: #00bb33;
}

.yellow-cell {
  width: var(--cell-size);
  height: var(--cell-size);
  background: #bbbb33;
}

/* Keep existing Blazor defaults (optional) */
a, .btn-link { color: #006bb7; }
.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}
.content { padding-top: 1.1rem; }
h1:focus { outline: none; }
.valid.modified:not([type=checkbox]) { outline: 1px solid #26b050; }
.invalid { outline: 1px solid #e51620; }
.validation-message { color: #e51620; }
.blazor-error-boundary {
  background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
  padding: 1rem 1rem 1rem 3.7rem;
  color: white;
}
.blazor-error-boundary::after { content: "An error has occurred." }

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}
.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
  text-align: start;
}

.badge-xxl {
    font-size: 160px;
    line-height: 1;
    padding: 0.25em 0.4em;
    border-radius: 0.35rem;
    display: inline-block;
    /* Use CSS variable for the red channel */
    color: rgb(var(--label-color, 128, 0, 0));
}

.badge-xl {
    font-size: 80px;
    line-height: 1;
    padding: 0.125em 0.2em;
    border-radius: 0.35rem;
    display: inline-block;
    /* Use CSS variable for the red channel */
    color: rgb(var(--label-color, 128, 128, 200));
}


.random-number-container {
    min-height: 250px;
}