.modal-backdrop { z-index:200; overflow:hidden; grid-template-columns:minmax(0,1fr); grid-template-rows:minmax(0,1fr); isolation:isolate; }
.signup-card { display: flex; flex-direction: column; min-height:0; max-height: calc(100dvh - 40px); }
.signup-card .modal-head { flex-shrink: 0; }
.signup-card .modal-form { flex:1 1 auto; overflow-y: auto; min-height: 0; gap: 16px; }
.signup-intro, .signup-footer { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.7; }
.signup-card label { font-size: 14px; }
.signup-card small { font-size: 12px; line-height: 1.6; color: var(--muted); }
.signup-card input { min-width: 0; }
.signup-card input:focus-visible { outline: 2px solid var(--forum-accent, #e6a46a); outline-offset: 2px; }
.signup-card input[aria-invalid="true"] { border-color: #e6a46a; }
.signup-card .signup-show-password { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 13px; }
.signup-show-password input { width: 16px; height: 16px; margin: 0; accent-color: var(--forum-accent, #e6a46a); }
.signup-card .signup-honeypot { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); pointer-events: none; }
.signup-captcha { border-top: 1px solid var(--line); padding-top: 16px; }
.signup-captcha label { font-weight: 650; }
.signup-captcha p { margin: 0; font-size: 12px; line-height: 1.7; color: var(--muted); }
.signup-captcha img { width: 280px; max-width: 100%; height: auto; border-radius: 6px; border: 1px solid var(--line); }
.signup-captcha-entry { display: flex; gap: 10px; align-items: center; }
.signup-captcha-entry input { width: 100%; flex: 1; text-transform: uppercase; letter-spacing: .15em; font-family: ui-monospace, monospace; }
.signup-captcha-entry button { flex-shrink: 0; font-size: 12px; padding: 10px 12px; }
.signup-error { position: sticky; top: 0; z-index: 1; margin: 0; padding: 12px; border: 1px solid #e6a46a66; border-radius: 6px; background: var(--surface); color: var(--text); font-size: 13px; line-height: 1.7; }
.signup-error[hidden], .signup-captcha img[hidden] { display: none; }
.signup-card button:disabled { opacity: .5; cursor: default; }
.signup-footer { text-align: center; }
.signup-footer button { background: none; padding: 0; color: var(--forum-accent, #e6a46a); font: inherit; cursor: pointer; }
@media (max-width: 600px) { .signup-card input { font-size: 16px; } .signup-captcha-entry { gap: 8px; } }