:root {
  --red: var(--brand-action);
  --red-dark: var(--brand-action-hover);
  --ink: var(--brand-ink);
  --muted: var(--brand-muted);
  --line: var(--brand-border);
  --focus: var(--brand-focus);
  font-family: var(--brand-font);
  font-synthesis: none;
  color: var(--ink);
  background: var(--brand-canvas);
}
* { box-sizing: border-box; }
body { margin: 0; font-size: 15px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
button, input { font: inherit; }
button { cursor: pointer; }
button:disabled { opacity: .55; cursor: wait; }
a { color: inherit; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
h1, h2, p { margin: 0; }
.skip-link { position: fixed; z-index: 5; top: 8px; left: 8px; background: var(--brand-surface); padding: 12px; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.login-header { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 24px; max-width: 1200px; margin: auto; padding: 20px 40px; }
.brand { display: flex; gap: 10px; align-items: center; text-decoration: none; font-size: 24px; font-weight: 700; line-height: 1.2; letter-spacing: -.7px; }
.brand small { display: block; font-size: 11px; letter-spacing: 0; line-height: 1.5; font-weight: 400; color: var(--muted); margin-top: 3px; }
.brand-mark { display: block; width: 40px; height: 40px; flex: none; object-fit: contain; }
.invite-label { font-size: 13px; color: var(--muted); }
.login-main { max-width: 1060px; margin: 54px auto 72px; padding: 0 40px; display: grid; grid-template-columns: minmax(0, 1fr) 440px; gap: 64px; align-items: center; min-height: 520px; }
.eyebrow { display: block; font-size: 11px; letter-spacing: 1.2px; font-weight: 650; color: var(--muted); margin-bottom: 12px; }
.login-intro h1 { font-size: clamp(30px, 3.2vw, 38px); line-height: 1.2; letter-spacing: -1.2px; font-weight: 650; }
.login-intro > p { font-size: 15px; color: var(--muted); line-height: 1.75; max-width: 340px; margin-top: 18px; }
.intro-flow { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 28px; }
.intro-flow span { border: 1px solid var(--line); border-radius: 5px; padding: 6px 9px; font-size: 12px; background: var(--brand-surface); }
.intro-flow span + span:before { content: '→'; margin-right: 8px; color: var(--muted); }
.login-card { min-width: 0; padding: 32px; background: var(--brand-surface); border: 1px solid var(--line); border-radius: 8px; }
.login-card h2 { font-size: 26px; letter-spacing: -.6px; font-weight: 650; line-height: 1.3; }
.form-description { font-size: 14px; color: var(--muted); margin: 10px 0 24px; line-height: 1.65; }
.form-field { margin: 0 0 20px; }
.form-field > label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; }
input { width: 100%; min-width: 0; min-height: 46px; border: 1px solid #B9BDC4; border-radius: 5px; padding: 11px 12px; background: var(--brand-surface); color: var(--ink); font-size: 16px; }
input::placeholder { color: var(--muted); opacity: 1; }
input:hover { border-color: #858A93; }
input:focus { border-color: var(--focus); }
.password-field { position: relative; }
.password-field input { padding-right: 66px; }
.show-password { position: absolute; right: 3px; top: 3px; min-width: 58px; min-height: 40px; border: 0; background: transparent; color: var(--muted); border-radius: 4px; font-size: 13px; font-weight: 600; }
.show-password:hover { background: var(--brand-canvas); color: var(--ink); }
.field-hint { font-size: 13px; color: var(--muted); margin-top: 8px; line-height: 1.65; }
.btn { display: block; width: 100%; min-height: 46px; padding: 12px 18px; border: 1px solid var(--red); border-radius: 5px; background: var(--red); color: #fff; font-size: 14px; font-weight: 600; }
.btn:hover:not(:disabled) { background: var(--red-dark); border-color: var(--red-dark); }
.help-note { font-size: 13px; color: var(--muted); line-height: 1.75; margin-top: 20px; }
.session-note { font-size: 12px; line-height: 1.7; color: var(--muted); padding-top: 20px; border-top: 1px solid var(--line); margin-top: 24px; }
.auth-error { background: var(--brand-soft); border: 1px solid #EABBC4; border-radius: 5px; padding: 12px; color: var(--red-dark); font-size: 14px; line-height: 1.65; margin: 0 0 20px; overflow-wrap: anywhere; }
.text-button { display: block; margin: 12px auto 0; border: 0; background: transparent; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; font-size: 13px; min-height: 40px; padding: 8px; }
.text-button:hover { color: var(--ink); }
.account-email { background: var(--brand-canvas); border: 0; font-size: 14px; margin: 0 0 22px; color: var(--muted); overflow-wrap: anywhere; }
.loading-state { font-size: 14px; color: var(--muted); padding: 50px 0; text-align: center; }
.login-footer { max-width: 1120px; border-top: 1px solid var(--line); padding: 20px 0; margin: 0 auto; font-size: 12px; color: var(--muted); }
form[aria-busy=true] { cursor: progress; }
@media (max-width: 1000px) {
  .login-main { gap: 36px; grid-template-columns: minmax(0, 1fr) 400px; margin-top: 32px; padding: 0 32px; }
  .login-header { padding: 20px 32px; }
  .login-card { padding: 28px; }
  .login-footer { margin: 0 32px; }
}
@media (max-width: 760px) {
  .login-header { padding: 18px 20px; min-height: 80px; gap: 16px; }
  .invite-label { font-size: 12px; text-align: right; }
  .brand { font-size: 23px; }
  .login-main { display: block; max-width: 480px; min-height: 0; margin: 20px auto 40px; padding: 0 20px; }
  .login-intro { display: none; }
  .login-card { padding: 26px; }
  .login-footer { margin: 0 20px; }
}
@media (max-width: 380px) {
  .login-header, .login-main { padding-left: 16px; padding-right: 16px; }
  .login-header { gap: 10px; }
  .invite-label { max-width: 92px; }
  .login-card { padding: 22px; }
}
@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }