:root {
  color-scheme: dark;
  --bg: #101216;
  --panel: #181b21;
  --panel-2: #1f242c;
  --text: #f3f6fb;
  --muted: #aeb7c6;
  --line: #2d3440;
  --accent: #40d98f;
  --danger: #ff6b6b;
  --warn: #ffd166;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at 20% 10%, #1f2b31 0, transparent 28rem), var(--bg);
  color: var(--text);
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.panel {
  width: min(420px, 100%);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border-radius: 8px;
  padding: 28px;
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.35);
}

.mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  color: #07110c;
  background: var(--accent);
  font-weight: 800;
  margin-bottom: 20px;
}

h1 {
  margin: 0;
  font-size: 28px;
  line-height: 1.15;
}

.domain {
  margin: 8px 0 22px;
  color: var(--muted);
  font-size: 14px;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0d1014;
  color: var(--text);
  padding: 12px;
  font-size: 15px;
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(64, 217, 143, 0.14);
}

button {
  margin-top: 6px;
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #06110b;
  padding: 12px 16px;
  font-size: 15px;
  font-weight: 800;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.notice,
.error {
  margin: 0 0 18px;
  border-radius: 6px;
  padding: 11px 12px;
  font-size: 13px;
  line-height: 1.45;
}

.notice {
  border: 1px solid rgba(255, 209, 102, 0.35);
  background: rgba(255, 209, 102, 0.1);
  color: var(--warn);
}

.error {
  border: 1px solid rgba(255, 107, 107, 0.35);
  background: rgba(255, 107, 107, 0.1);
  color: var(--danger);
}