:root {
  color-scheme: dark;
  --bg: #050914;
  --title: #edf3ff;
  --muted: #a6b3cf;
  --accent: #9ec5ff;
  --rgb: 130, 182, 255;
  --surface: 10, 19, 34;
  --line: #2c3b53;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  padding: 24px 16px;
  background: var(--bg);
  color: var(--title);
  font-family: system-ui, sans-serif;
  line-height: 1.5;
}

main {
  width: 100%;
  max-width: 420px;
  min-width: 0;
  margin: auto;
}

.panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(var(--surface), .8);
  box-shadow: 0 24px 80px rgba(0, 10, 30, .15);
}

.brand {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto 20px;
  padding: 16px 32px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgb(var(--surface));
  box-shadow: inset 0 1px 0 rgba(var(--rgb), .12);
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
}

.brand::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(circle 320px at var(--shine-x, -400px) var(--shine-y, -400px), rgba(var(--rgb), .4), transparent);
  opacity: 0;
}

@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .brand:hover { border-color: var(--accent); }
  .brand::before { opacity: 1; }
}

.brand h1 { margin: 0; font: inherit; text-align: center; }
h1 span { color: var(--accent); }
.tagline { margin: 8px 0 4px; color: var(--muted); text-align: center; font-size: 12px; font-weight: 400; }
.tagline a { color: var(--accent); }
label { display: block; margin-bottom: 8px; font-size: 14px; }

input, button, #download {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  font-size: 16px;
}

input { padding: 12px; background: var(--bg); color: var(--title); }
input::placeholder { color: var(--muted); opacity: 1; }
input[aria-invalid="true"] { border-color: var(--accent); }
#status { margin: 8px 0 16px; color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }
#status:empty { margin-top: 0; }

button, #download {
  display: block;
  padding: 12px;
  background: rgba(var(--rgb), .15);
  color: var(--accent);
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

button:hover, #download:hover { border-color: var(--accent); background: rgba(var(--rgb), .22); }
:is(input, button, a):focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
#result { margin-top: 24px; }
canvas { display: block; width: 100%; max-width: 280px; height: auto; margin: 0 auto 20px; image-rendering: pixelated; }

@media (max-width: 360px) {
  .panel { padding: 20px; }
}