:root {
  color-scheme: light;
  --ink: #171916;
  --muted: #686d66;
  --line: #dcded9;
  --paper: #fbfbf8;
  --green: #154c3a;
  --danger: #a72d26;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
}

.login-shell {
  min-height: 100vh;
  display: grid;
  align-items: center;
  padding: 48px 24px;
}

.login-panel {
  width: min(100%, 480px);
  margin: 0 auto;
  padding: 42px 0 32px;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .12em;
}

h1 {
  margin: 0;
  font-size: clamp(40px, 8vw, 58px);
  line-height: 1.08;
  letter-spacing: -.055em;
}

.description {
  max-width: 400px;
  margin: 22px 0 34px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

form { display: grid; gap: 10px; }

label {
  font-size: 12px;
  font-weight: 800;
}

.password-row {
  display: grid;
  grid-template-columns: 1fr auto;
}

input,
button {
  min-height: 50px;
  border: 1px solid #bfc3bc;
  border-radius: 0;
  background: white;
  color: var(--ink);
  font: inherit;
}

input {
  min-width: 0;
  padding: 12px 14px;
  border-right: 0;
  font-size: 16px;
}

button {
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
}

.toggle-password {
  width: 64px;
  color: var(--muted);
}

.login-button {
  margin-top: 4px;
  border-color: var(--ink);
  background: var(--ink);
  color: white;
}

.login-button:hover { background: var(--green); }
.login-button:disabled { cursor: wait; opacity: .58; }

input:focus,
button:focus-visible {
  z-index: 1;
  outline: 3px solid color-mix(in srgb, var(--green) 28%, transparent);
  outline-offset: 2px;
  border-color: var(--green);
}

.login-status {
  min-height: 22px;
  margin: 2px 0 0;
  color: var(--danger);
  font-size: 13px;
  line-height: 1.55;
}

.footnote {
  margin: 28px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

@media (max-width: 520px) {
  .login-shell { align-items: start; padding: 56px 20px 32px; }
  .login-panel { padding-top: 30px; }
  h1 { font-size: 42px; }
  .description { margin-bottom: 28px; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; }
}