:root {
  color-scheme: light;
  --ink: #17202a;
  --muted: #5c6875;
  --line: #d9dee5;
  --paper: #ffffff;
  --soft: #f3f6f9;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --success: #047857;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.12), transparent 42%),
    linear-gradient(225deg, rgba(20, 184, 166, 0.12), transparent 38%),
    var(--soft);
}

.page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 16px;
}

.login-shell {
  width: min(920px, 100%);
  display: grid;
  grid-template-columns: 1fr 380px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 24px 70px rgba(23, 32, 42, 0.12);
}

.brand-panel {
  padding: 56px;
  background: #102033;
  color: #ffffff;
}

.eyebrow {
  margin: 0 0 16px;
  color: #9cc9ff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 40px;
  line-height: 1.15;
  letter-spacing: 0;
}

.lead {
  max-width: 420px;
  margin: 18px 0 0;
  color: #d8e5f4;
  font-size: 16px;
  line-height: 1.7;
}

.login-form {
  display: grid;
  align-content: center;
  gap: 18px;
  padding: 48px 40px;
}

.field {
  display: grid;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 46px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 14px;
  color: var(--ink);
  font: inherit;
  background: #ffffff;
}

input:focus {
  outline: 3px solid rgba(37, 99, 235, 0.18);
  border-color: var(--accent);
}

button {
  min-height: 48px;
  border: 0;
  border-radius: 6px;
  color: #ffffff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  background: var(--accent);
}

button:hover {
  background: var(--accent-dark);
}

.message {
  min-height: 24px;
  margin: 0;
  color: var(--success);
  font-size: 14px;
  line-height: 1.5;
}

@media (max-width: 760px) {
  .login-shell {
    grid-template-columns: 1fr;
  }

  .brand-panel,
  .login-form {
    padding: 32px 24px;
  }

  h1 {
    font-size: 32px;
  }
}