.st-brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--st-text);
}

.st-brand img{ display:block; }

.st-brand-name{
  font-family:var(--st-serif);
  font-size:22px;
  letter-spacing:-0.02em;
}

html.studio-marketing .st-auth{
  min-height:100vh;
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
}

.st-auth-visual{
  display:flex;
  flex-direction:column;
  justify-content:center;
  padding:48px var(--st-gutter);
}

.st-auth-visual .st-display{ font-size:clamp(36px, 4vw, 56px); }

.st-auth-visual .st-lead{ margin-top:16px; }

.st-auth-panel{
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px var(--st-gutter);
}

.st-auth-card{
  width:min(100%, 440px);
  background:var(--st-surface);
  border:1px solid var(--st-border);
  border-radius:var(--st-r-panel);
  padding:32px;
}

.st-auth-card h2,
.st-auth-title{
  margin:0 0 8px;
  font-family:var(--st-serif);
  font-size:32px;
  font-weight:400;
  line-height:1.1;
  letter-spacing:-0.02em;
}

.st-auth-sub{
  margin:0 0 24px;
  color:var(--st-muted);
  font-size:15px;
}

.st-field{ margin:0 0 16px; }

.st-field label{
  display:block;
  margin-bottom:6px;
  font-size:14px;
  font-weight:500;
}

.st-field input{
  width:100%;
  height:48px;
  padding:0 14px;
  border-radius:var(--st-r-btn);
  border:1px solid var(--st-border);
  background:var(--st-elevated);
  color:var(--st-text);
  font-family:var(--st-sans);
  font-size:16px;
}

.st-field input:focus-visible{
  outline:2px solid var(--st-purple);
  outline-offset:2px;
}

.st-field.is-invalid input{
  border-color:#F87171;
}

.st-field-error{
  margin:6px 0 0;
  font-size:13px;
  color:#FECACA;
}

.st-field-help{
  margin:6px 0 0;
  font-size:13px;
  color:var(--st-muted);
}

.st-auth-card .st-btn-primary{
  width:100%;
  margin-top:8px;
}

.st-auth-note{
  margin:12px 0 0;
  text-align:center;
  font-size:13px;
  color:var(--st-muted);
}

.st-auth-switch{
  margin:16px 0 0;
  text-align:center;
  font-size:14px;
}

.st-oauth-row{
  display:flex;
  flex-direction:column;
  gap:8px;
  margin-top:20px;
}

.st-oauth{
  min-height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:0 16px;
  border-radius:var(--st-r-btn);
  border:1px solid var(--st-border-strong);
  background:transparent;
  color:var(--st-text);
  font-family:var(--st-sans);
  font-size:14px;
  cursor:pointer;
}

.st-oauth:hover{ background:var(--st-elevated); }

.st-oauth svg{ width:18px; height:18px; }

.st-oauth:disabled,
.st-btn:disabled{
  opacity:0.65;
  cursor:not-allowed;
}

.st-auth-banner{
  display:none;
  margin-bottom:16px;
  padding:12px 14px;
  border-radius:var(--st-r-btn);
  font-size:13px;
  line-height:1.45;
  color:var(--st-text);
  background:rgba(63,155,106,.16);
  border:1px solid var(--st-border-strong);
}

.st-auth-banner.visible{ display:block; }

.st-auth-error,
.st-auth-success{
  display:none;
  margin-top:12px;
  font-size:14px;
}

.st-auth-error.visible,
.st-auth-success.visible{ display:block; }

.st-auth-error{ color:#FECACA; }
.st-auth-success{ color:#BBF7D0; }

.st-auth-foot{
  margin:18px 0 0;
  text-align:center;
  font-size:12px;
  color:var(--st-muted);
}

.st-auth-foot a{ color:var(--st-text); }

.st-auth-hidden{ display:none !important; }

.st-auth-card.is-hidden,
.is-hidden{ display:none !important; }

@media (max-width:900px){
  html.studio-marketing .st-auth{
    grid-template-columns:1fr;
  }
  .st-auth-visual{ display:none; }
  .st-auth-panel{ padding:24px 20px 48px; }
}