/* Phase 4D: v3 login composition; all colours come from shared tokens. */
main:has(> .auth-stage) { padding-bottom: 24px; }
.auth-stage { position: relative; box-sizing: border-box; min-height: calc(100vh - 140px); min-height: calc(100dvh - 140px); margin-top: 10px; border-radius: var(--r-panel); background: var(--sky); color: var(--sky-ink); overflow: hidden; display: grid; place-items: center; padding: clamp(24px, 5vw, 72px) 16px; isolation: isolate; }
.auth-stage .auth-wheel { position: absolute; width: min(1100px, 140vw); max-width: none; right: -18%; top: 50%; transform: translateY(-50%); opacity: .5; z-index: -1; pointer-events: none; stroke: var(--sky-line); stroke-width: 1; }
.auth-stage .auth-card { width: min(440px, 100%); display: grid; gap: 18px; padding: clamp(26px, 4vw, 40px); border: 0; border-radius: var(--r-panel); background: var(--sheet); color: var(--ink); box-shadow: var(--shadow-card); text-align: left; overflow-wrap: anywhere; }
.auth-stage .auth-card h1 { margin: 0; font-size: 26px; line-height: var(--heading-line-height); }
.auth-stage .auth-card p { margin: 0; font-size: 14px; color: var(--ink-2); }
.auth-stage .auth-card .auth-brand { font-size: 13px; letter-spacing: .12em; color: var(--cobalt); }
.auth-stage .auth-card .auth-note { font-size: 13px; line-height: 1.7; color: var(--ink-3); }
.auth-stage .auth-card form { margin: 0; gap: 8px; }
.auth-stage .auth-card label { font-size: 13.5px; font-weight: var(--weight-heading); }
.auth-stage .auth-card input:not([type=hidden]) { height: 52px; min-height: 52px; width: 100%; min-width: 0; padding: 0 16px; border: 1px solid var(--line-2); border-radius: 14px; background: var(--paper); color: var(--ink); font-size: 16px; }
.auth-stage .auth-card input:not([type=hidden]):focus { outline: 2px solid var(--cobalt); outline-offset: 2px; border-color: var(--cobalt); box-shadow: 0 0 0 4px var(--wash); }
.auth-stage .auth-card button, .auth-stage .auth-button { min-height: 46px; margin: 0; }
.auth-stage .auth-field button { margin-top: 8px; }
.auth-stage .auth-card .auth-reason { padding: 12px 14px; border-radius: 12px; background: var(--ember-wash); color: var(--ink); font-size: 13.5px; line-height: 1.7; }
.auth-stage .auth-reason p { font-size: 13.5px; color: var(--ink); }
.auth-stage .auth-reason p + p { margin-top: 8px; }
.auth-stage .auth-card .auth-account { padding: 12px 14px; border-radius: 12px; background: var(--wash); font-size: 13.5px; overflow-wrap: anywhere; }
.auth-stage .auth-card .auth-error { padding: 10px 12px; border-radius: 10px; background: var(--ember-wash); color: var(--ember); font-size: 13px; line-height: 1.7; }
.auth-stage .auth-card .security-code { gap: 10px; margin-top: 4px; }
.auth-stage .security-code input:not([type=hidden]) { height: 56px; font-family: var(--font-mono); font-size: 26px; letter-spacing: .5em; text-align: center; }
.auth-stage .security-code input[aria-invalid=true] { border-color: var(--ember); }
.auth-stage .security-code.locked input:not([type=hidden]) { opacity: .45; }
.auth-stage .auth-sent { display: grid; gap: 12px; text-align: center; }
.auth-stage .auth-sent .auth-lead { text-align: center; }
.auth-stage .auth-sent h1 { font-size: 22px; }
.auth-stage .auth-sent-icon { width: 64px; height: 64px; margin: 0 auto; border-radius: 50%; background: var(--wash); color: var(--cobalt); display: grid; place-items: center; }
.auth-stage .auth-links { display: flex; flex-wrap: wrap; gap: 8px 16px; }
.auth-stage .auth-link { margin: 0; font-size: 13px; text-decoration: none; }
@media (max-width: 760px) { .auth-stage .auth-wheel { right: auto; left: 50%; width: 175vw; transform: translate(-50%, -50%); } }