:root {
  --ivory: #faf9f5;
  --slate: #141413;
  --clay: #9a402b;
  --oat: #e3dacc;
  --gray-300: #d1cfc5;
  --gray-500: #62615a;
  --gray-700: #3d3d3a;
  --white: #fff;
  --serif: ui-serif, Georgia, "Songti SC", serif;
  --sans: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--ivory);
}

body {
  display: grid;
  grid-template-rows: auto 1fr auto;
  min-height: 100vh;
  margin: 0;
  background: var(--ivory);
  color: var(--slate);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 36px;
  border-bottom: 1px solid var(--gray-300);
}

.brand {
  font-family: var(--serif);
  font-size: 17px;
}

.security-mark,
.footer {
  color: var(--gray-500);
  font-family: var(--mono);
  letter-spacing: 0.06em;
}

.security-mark {
  align-self: center;
  font-size: 10px;
}

.shell {
  display: grid;
  grid-template-columns: minmax(280px, 430px) minmax(360px, 560px);
  align-items: center;
  justify-content: center;
  gap: clamp(48px, 8vw, 90px);
  width: 100%;
  padding: 64px 32px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--clay);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.eyebrow::before {
  width: 28px;
  height: 2px;
  background: var(--clay);
  content: "";
}

.intro h1 {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-size: clamp(36px, 4vw, 46px);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.intro > p:not(.eyebrow, .scope) {
  max-width: 390px;
  margin: 0;
  color: var(--gray-700);
  font-size: 15px;
  line-height: 1.75;
}

.scope {
  max-width: 420px;
  margin: 30px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--gray-300);
  color: var(--gray-500);
  font-size: 12px;
  line-height: 1.6;
}

.card {
  position: relative;
  padding: 34px 36px;
  overflow: hidden;
  border: 1.5px solid var(--gray-300);
  border-radius: 14px;
  background: var(--white);
  box-shadow: 0 18px 50px rgba(20, 20, 19, 0.06);
}

.card::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--clay);
  content: "";
}

.card h2 {
  margin: 0 0 8px;
  font-family: var(--serif);
  font-size: 28px;
  font-weight: 500;
}

.sub {
  margin: 0 0 28px;
  color: var(--gray-500);
  font-size: 13px;
}

.error {
  margin: -10px 0 20px;
  padding: 11px 13px;
  border-left: 3px solid var(--clay);
  background: color-mix(in srgb, var(--clay) 10%, var(--ivory));
  color: var(--gray-700);
  font-size: 13px;
  line-height: 1.5;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  margin-bottom: 7px;
  font-size: 12px;
  font-weight: 650;
}

.field input {
  width: 100%;
  height: 46px;
  padding: 0 13px;
  border: 1.5px solid var(--gray-300);
  border-radius: 8px;
  outline: none;
  background: var(--white);
  color: var(--slate);
  font: inherit;
}

.field input:focus-visible,
.remember input:focus-visible,
.submit:focus-visible,
.password-toggle:focus-visible,
.secondary-link:focus-visible {
  outline: 3px solid rgba(154, 64, 43, 0.28);
  outline-offset: 2px;
}

.field input:focus-visible {
  border-color: var(--clay);
}

.password-row {
  position: relative;
}

.password-row input {
  padding-right: 64px;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: 8px;
  min-width: 44px;
  min-height: 34px;
  padding: 0 8px;
  transform: translateY(-50%);
  border: 0;
  border-radius: 5px;
  background: transparent;
  color: var(--gray-500);
  font: 12px var(--sans);
  cursor: pointer;
}

.password-toggle:hover {
  background: var(--ivory);
  color: var(--slate);
}

.remember {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0 22px;
  color: var(--gray-700);
  font-size: 12px;
  cursor: pointer;
}

.remember input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--slate);
}

.submit {
  width: 100%;
  min-height: 48px;
  border: 0;
  border-radius: 8px;
  background: var(--slate);
  color: var(--ivory);
  font: 600 14px var(--sans);
  letter-spacing: 0.02em;
  cursor: pointer;
}

.submit:hover {
  background: var(--gray-700);
}

.help,
.notice,
.secondary-link {
  font-size: 11px;
}

.help {
  margin: 16px 0 0;
  color: var(--gray-500);
  text-align: center;
}

.notice {
  margin: 24px 0 0;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--oat);
  color: var(--gray-700);
  line-height: 1.55;
}

.secondary-link {
  display: block;
  width: fit-content;
  margin: 18px auto 0;
  color: var(--gray-700);
  text-underline-offset: 3px;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 36px;
  border-top: 1px solid var(--gray-300);
  font-size: 9px;
}

[hidden] {
  display: none !important;
}

@media (max-width: 820px) {
  .shell {
    grid-template-columns: 1fr;
    gap: 36px;
    max-width: 540px;
    margin: 0 auto;
    padding: 44px 22px;
  }

  .card {
    padding: 28px 24px;
  }

  .topbar,
  .footer {
    padding-right: 22px;
    padding-left: 22px;
  }
}

@media (max-width: 540px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .footer {
    flex-direction: column;
    gap: 6px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .submit,
  .password-toggle {
    transition: background-color 150ms ease, color 150ms ease;
  }
}