@font-face { font-family: 'Inter'; font-style: normal; font-weight: 400; font-display: swap; src: url('/public/fonts/inter-400.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 500; font-display: swap; src: url('/public/fonts/inter-500.woff2') format('woff2'); }
@font-face { font-family: 'Inter'; font-style: normal; font-weight: 600; font-display: swap; src: url('/public/fonts/inter-600.woff2') format('woff2'); }

:root {
  --bg: #F7F5F2;
  --surface: #FFFFFF;
  --surface-2: #F1EDE8;
  --text: #1C1917;
  --text-2: #57534E;
  --text-3: #8B8680;
  --border: #D4CFC9;
  --border-2: #E7E2DB;
  --blue: #2563EB;
  --blue-dark: #1D4ED8;
  --red: #B91C1C;
  --green: #15803D;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  min-height: 100vh;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

button, input { font: inherit; }
a { color: var(--blue); }
a:hover { text-decoration: none; }
[hidden] { display: none !important; }

.header {
  height: 42px;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.brand { color: var(--blue); font-size: 13px; font-weight: 600; text-decoration: none; transition: opacity .15s; }
.brand:hover { opacity: .7; }
.brand-short, .brand-tiny { display: none; }
.nav-sep { color: #A8A29E; font-size: 12px; }
.nav-label { color: var(--text-2); font-size: 12px; font-weight: 500; }

.auth-shell {
  min-height: calc(100vh - 42px);
  display: grid;
  place-items: start center;
  padding: clamp(42px, 8vh, 84px) 20px 64px;
}

.auth-card {
  width: min(420px, 100%);
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.auth-heading { margin-bottom: 20px; text-align: left; }
.auth-mark {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--text);
}
.auth-heading h1 { font-size: 18px; line-height: 1.3; font-weight: 600; letter-spacing: -.01em; }
.auth-heading p { margin-top: 4px; color: var(--text-2); font-size: 12.5px; line-height: 1.5; }
.auth-heading code { white-space: nowrap; }

.return-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 18px;
  padding: 9px 10px;
  border: 1px solid var(--border-2);
  border-radius: 6px;
  background: var(--surface-2);
  color: var(--text-2);
  font-size: 11.5px;
  line-height: 1.4;
  min-width: 0;
}
.return-row svg { flex: 0 0 auto; color: var(--text-3); }
.return-row strong { min-width: 0; color: var(--text); font-weight: 500; overflow-wrap: anywhere; }

.provider-list { display: grid; gap: 9px; }
.provider-form { width: 100%; }
.provider-button, .primary-button {
  width: 100%;
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.provider-button { border: 1px solid var(--border); background: var(--surface); color: var(--text); }
.provider-link { text-decoration: none; }
.provider-icon { width: 18px; height: 18px; flex: 0 0 auto; }
.provider-icon-github { color: #181717; }
.provider-button:hover { background: var(--surface-2); border-color: var(--text-3); }
.provider-button:focus-visible, .primary-button:focus-visible, .back-button:focus-visible, .resend-row button:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.divider { display: flex; align-items: center; gap: 10px; margin: 17px 0; color: var(--text-3); font-size: 11px; }
.divider::before, .divider::after { content: ''; height: 1px; flex: 1; background: var(--border-2); }

label { display: block; margin-bottom: 6px; color: var(--text-2); font-size: 11.5px; font-weight: 600; }
.text-input {
  width: 100%;
  min-height: 40px;
  padding: 9px 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
}
.text-input::placeholder { color: var(--text-3); }
.text-input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 11%, transparent); }
.text-input[aria-invalid="true"] { border-color: var(--red); }
.field-error { min-height: 18px; padding-top: 4px; color: var(--red); font-size: 11.5px; line-height: 1.3; }

.primary-button { border: 1px solid var(--blue); background: var(--blue); color: #FFFFFF; text-decoration: none; }
.primary-button:hover { border-color: var(--blue-dark); background: var(--blue-dark); }

.back-button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin: -2px 0 18px;
  border: 0;
  background: transparent;
  color: var(--text-2);
  font-size: 11.5px;
  cursor: pointer;
}
.back-button:hover { color: var(--text); }

.code-intro { margin-bottom: 18px; text-align: center; }
.code-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  margin: 0 auto 10px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--blue) 9%, var(--surface));
  color: var(--blue);
}
.code-intro h2, .success-view h2 { font-size: 16px; font-weight: 600; }
.code-intro p, .success-view p { margin-top: 5px; color: var(--text-2); font-size: 12px; line-height: 1.5; }
.code-intro strong, .success-view strong { color: var(--text); font-weight: 500; overflow-wrap: anywhere; }
.code-input { text-align: center; font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 20px; letter-spacing: .28em; font-variant-numeric: tabular-nums; }

.resend-row { margin-top: 14px; color: var(--text-3); font-size: 11.5px; text-align: center; }
.resend-row button { border: 0; background: transparent; color: var(--text-2); font-size: inherit; text-decoration: underline; cursor: pointer; }
.resend-row button:disabled { color: var(--text-3); cursor: default; text-decoration: none; }

.success-view { padding: 10px 0 4px; text-align: center; }
.success-icon { width: 46px; height: 46px; display: grid; place-items: center; margin: 0 auto 12px; border-radius: 50%; background: color-mix(in srgb, var(--green) 10%, var(--surface)); color: var(--green); }
.success-link { margin-top: 18px; }

.prototype-status { min-height: 17px; margin-top: 12px; color: var(--text-3); font-size: 11px; line-height: 1.45; text-align: center; }

.terms-card { width: min(440px, 100%); }
.terms-choice {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  margin: 0;
  padding: 11px;
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.45;
  cursor: pointer;
}
.terms-choice input { width: 16px; height: 16px; margin-top: 1px; flex: 0 0 auto; accent-color: var(--blue); }
.terms-choice a, .terms-privacy a { color: inherit; text-underline-offset: 2px; }
.terms-privacy { margin-top: 10px; color: var(--text-2); font-size: 11.5px; line-height: 1.5; }
.terms-card .field-error { padding-top: 7px; }

.authorize-card { width: min(400px, 100%); }
.authorize-form { display: grid; }
.authorize-code-input {
  text-transform: uppercase;
  font-family: ui-monospace, Menlo, Consolas, monospace;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .14em;
  font-variant-numeric: tabular-nums;
}
.authorize-code-input::placeholder { font-weight: 400; letter-spacing: .12em; }
.auth-message { color: var(--text-2); font-size: 11.5px; line-height: 1.45; }
.authorization-detail { min-height: 29px; padding: 6px 1px; }
.authorization-result:not(:empty) { margin-top: 14px; }
@media (max-width: 520px) {
  body { min-height: 0; }
  .brand-full { display: none; }
  .brand-short { display: inline; }
  .auth-shell { min-height: auto; padding: 24px 14px 42px; }
  .auth-card { padding: 20px; }
  .text-input { font-size: 16px; }
  .text-input.code-input { font-size: 20px; }
}

@media (max-width: 366px) {
  .brand-short { display: none; }
  .brand-tiny { display: inline; }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1C1A17;
    --surface: #211F1D;
    --surface-2: #252320;
    --text: #E7E5E2;
    --text-2: #A8A29E;
    --text-3: #77716B;
    --border: #3D3935;
    --border-2: #332F2B;
    --blue: #3B82F6;
    --blue-dark: #2563EB;
    --red: #FCA5A5;
    --green: #4ADE80;
  }
  .provider-icon-github { color: #F0F0F0; }
}