:root {
  --bg: #f4f7fb;
  --text: #172033;
  --muted: #667085;
  --line: #dde5f0;
  --primary: #2563eb;
  --primary-soft: #eaf1ff;
  --red: #d92d20;
  --green: #0f9f6e;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top left, rgba(37, 99, 235, 0.18), transparent 30rem),
    linear-gradient(180deg, #f8fbff, var(--bg));
  color: var(--text);
}

.loginShell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 18px;
}

.loginCard {
  width: min(100%, 430px);
  border: 1px solid rgba(221, 229, 240, 0.92);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 22px 54px rgba(22, 35, 59, 0.12);
  padding: 26px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.intro {
  color: var(--muted);
  line-height: 1.6;
}

form {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

label span {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
  font-weight: 800;
}

input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 0 0.9rem;
  font: inherit;
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

button {
  min-height: 50px;
  border: 0;
  border-radius: 16px;
  background: var(--primary);
  color: #fff;
  font: inherit;
  font-weight: 900;
}

button:disabled {
  opacity: 0.55;
}

.status {
  min-height: 1.4rem;
  color: var(--muted);
}

.status.bad {
  color: var(--red);
}

.status.ok {
  color: var(--green);
}

.switchLine {
  color: var(--muted);
}

a {
  color: var(--primary);
  font-weight: 900;
}

@media (max-width: 520px) {
  .loginShell {
    align-items: start;
    padding: 12px;
  }

  .loginCard {
    margin-top: 20px;
    border-radius: 22px;
    padding: 20px;
  }
}