.marketdeck-auth-backdrop[hidden] { display: none; }
.marketdeck-auth-backdrop {
  position: fixed; inset: 0; z-index: 1000; display: grid; place-items: center;
  padding: var(--s4); background: color-mix(in srgb, var(--bg) 78%, transparent);
}
.marketdeck-auth-dialog {
  position: relative; width: min(100%, 27rem); padding: var(--s6);
  border: 1px solid var(--border-strong); border-radius: var(--r-lg);
  background: var(--surface); color: var(--text); box-shadow: var(--shadow-2);
}
.marketdeck-auth-eyebrow {
  margin: 0 0 var(--s2); color: var(--accent-strong); font-size: var(--fs-sm);
  font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
}
.marketdeck-auth-dialog h2 { margin: 0; font-size: clamp(1.5rem, 6vw, 2rem); line-height: 1.15; }
.marketdeck-auth-dialog p:not(.marketdeck-auth-eyebrow) { color: var(--text-muted); }
.marketdeck-auth-actions { display: grid; gap: var(--s2); margin-top: var(--s5); }
.marketdeck-auth-actions .btn { display: block; text-align: center; text-decoration: none; }
.marketdeck-auth-close {
  position: absolute; top: var(--s3); right: var(--s3); padding: .25rem .6rem;
  border: 0; background: transparent; color: var(--text-muted); cursor: pointer;
  font: inherit; font-size: 1.5rem;
}
.marketdeck-auth-explore {
  display: block; margin: var(--s4) auto 0; padding: .4rem; border: 0;
  background: transparent; color: var(--text-muted); cursor: pointer; font: inherit;
}
.marketdeck-auth-close:focus-visible, .marketdeck-auth-explore:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}
@media (max-width: 767px) {
  .marketdeck-auth-dialog { padding: var(--s5); }
}