:root {
  --bg: #111418;
  --panel: #1a1f26;
  --line: #3a4552;
  --text: #f2f5f8;
  --muted: #b8c2cc;
  --accent: #4da3ff;
  --accent-text: #06121f;
  --danger: #ff7a7a;
  font-size: 18px;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, sans-serif;
  padding: 16px;
}
main {
  width: 100%;
  max-width: 440px;
}
.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-size: 2.2rem;
  font-weight: 600;
  margin-bottom: 24px;
}
.brand svg {
  border-radius: 16px;
}
.brand b {
  color: var(--accent);
}
form {
  background: var(--panel);
  border: 2px solid var(--line);
  border-radius: 12px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
h1 {
  margin: 0;
  font-size: 1.5rem;
}
.hint {
  color: var(--muted);
  margin: 4px 0 8px;
}
label {
  font-weight: 600;
  margin-top: 8px;
}
input {
  font: inherit;
  padding: 10px 12px;
  border-radius: 8px;
  border: 2px solid var(--line);
  background: #0b0e12;
  color: var(--text);
}
input:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 3px solid #ffd24d;
  outline-offset: 2px;
}
button {
  font: inherit;
  font-weight: 700;
  margin-top: 16px;
  min-height: 52px;
  border-radius: 8px;
  border: 2px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}
button:disabled {
  opacity: 0.7;
  cursor: default;
}
.error {
  color: var(--danger);
  font-weight: 600;
  margin: 8px 0 0;
}
a {
  color: var(--accent);
}