/* Beacon sign-in page: the black brand panel with a softly glowing beacon, and a warm page holding one card. */
body.login{min-height:100dvh;background:var(--bg)}
.auth{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);min-height:100dvh}

/* ---------- brand panel ---------- */
.auth-brand{position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;gap:var(--s7);padding:var(--s7) clamp(32px,5vw,72px);background:#141210;color:#F6F3EE;isolation:isolate}
.auth-brand .mark{display:flex;align-items:center;gap:10px;font:700 .875rem/1 var(--font);letter-spacing:.3em;text-transform:uppercase}
.auth-brand .mark::before{content:"";width:10px;height:10px;border-radius:50%;background:#D6B46A;box-shadow:0 0 0 4px rgba(214,180,106,.2)}
.brand-copy h1{font-size:clamp(2.25rem,3.6vw,3.25rem);line-height:1.08;letter-spacing:-.028em;font-weight:700;max-width:13ch;color:#F6F3EE}
.brand-copy p{margin-top:var(--s5);font-size:1.1875rem;line-height:1.55;color:#CFC3AF;max-width:30ch}
.brand-foot{font-size:var(--fs-small);color:#A79B88}

/* the beacon: a gold light with three slow rings */
.beacon{position:relative;width:min(340px,62%);aspect-ratio:1;margin:auto;align-self:center}
.beacon b{position:absolute;left:50%;top:50%;width:22px;height:22px;margin:-11px 0 0 -11px;border-radius:50%;background:#E2C47E;box-shadow:0 0 24px 6px rgba(214,180,106,.55),0 0 80px 24px rgba(214,180,106,.18)}
.beacon i{position:absolute;inset:0;border-radius:50%;border:1.5px solid rgba(214,180,106,.32);transform:scale(.18);opacity:0;animation:ring 6s cubic-bezier(.2,.6,.3,1) infinite}
.beacon i:nth-child(2){animation-delay:2s}
.beacon i:nth-child(3){animation-delay:4s}
@keyframes ring{0%{transform:scale(.18);opacity:0}15%{opacity:1}100%{transform:scale(1);opacity:0}}
@media (prefers-reduced-motion:reduce){.beacon i{animation:none;opacity:.5}.beacon i:nth-child(1){transform:scale(.45)}.beacon i:nth-child(2){transform:scale(.7)}.beacon i:nth-child(3){transform:scale(.95);opacity:.25}}

/* ---------- form panel ---------- */
.auth-panel{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--s4);padding:var(--s7) var(--s5)}
.auth-card{width:min(440px,100%);padding:clamp(28px,4vw,44px);background:var(--surface);border-radius:20px;box-shadow:var(--shadow-card);opacity:0;transform:translateY(8px);transition:opacity var(--d-3) var(--ease),transform var(--d-3) var(--ease)}
.auth-card.in{opacity:1;transform:none}
.auth-card.done{opacity:0;transform:translateY(-6px)}
.auth-card.shake{animation:shake .32s var(--ease)}
@keyframes shake{20%{transform:translateX(-6px)}40%{transform:translateX(5px)}60%{transform:translateX(-3px)}80%{transform:translateX(2px)}}
@media (prefers-reduced-motion:reduce){.auth-card{transition:none}.auth-card.shake{animation:none}}
.auth-loading{display:flex;align-items:center;gap:var(--s3);color:var(--muted);min-height:120px;justify-content:center}
.auth-card .eyebrow{color:var(--muted);font-weight:var(--fw-medium);margin-bottom:var(--s2)}
.auth-card h2{font-size:var(--fs-title);line-height:var(--lh-title);font-weight:var(--fw-bold);letter-spacing:-.018em}
.auth-card .sub{margin-top:var(--s3);color:var(--ink-2);line-height:1.55}
.auth-card form{display:grid;gap:var(--s5);margin-top:var(--s6)}
.f{display:grid;gap:6px}
.f label{font-weight:var(--fw-semibold);font-size:var(--fs-small);color:var(--ink-2)}
.f input{min-height:52px;font-size:1.0625rem;border-radius:12px;padding:12px 16px}
.f input[readonly]{background:var(--sunk);color:var(--ink-2);border-color:transparent}
.f-hint{font-size:var(--fs-small);color:var(--muted);min-height:1.4em}
.f-hint.ok{color:var(--ok)}
.caps{font-size:var(--fs-small);color:var(--soon);font-weight:var(--fw-semibold)}
.pw{position:relative}
.pw input{padding-right:56px}
.pw-toggle{position:absolute;right:4px;top:50%;transform:translateY(-50%);display:grid;place-items:center;width:var(--tap);height:var(--tap);border:0;border-radius:10px;background:none;color:var(--muted);cursor:pointer}
.pw-toggle:hover{color:var(--ink);background:var(--sunk)}
.pw-toggle .ico{width:20px;height:20px}
.err{margin:0}
.go{width:100%;min-height:52px;font-size:1.0625rem;position:relative;border-radius:14px}
.go .ico{width:18px;height:18px;transition:transform var(--d-2) var(--ease)}
.go:hover .ico{transform:translateX(3px)}
.go .spin{display:none}
.go.is-busy .go-t,.go.is-busy .ico{visibility:hidden}
.go.is-busy .spin{display:block;position:absolute;left:50%;top:50%;margin:-10px 0 0 -10px}
.spin{width:20px;height:20px;border-radius:50%;border:2.5px solid currentColor;border-right-color:transparent;animation:spin .7s linear infinite;opacity:.8}
@keyframes spin{to{transform:rotate(360deg)}}
.auth-foot{margin-top:var(--s5);padding-top:var(--s5);border-top:1px solid var(--hairline);font-size:var(--fs-small);color:var(--muted)}
.auth-note{min-height:1.5em;color:var(--ink-2);font-weight:var(--fw-medium)}
.noscript{position:fixed;bottom:16px;left:16px;right:16px;padding:12px 16px;background:var(--surface);border-radius:12px;box-shadow:var(--shadow-card)}

/* ---------- tablet and phone ---------- */
@media (max-width:900px){
  .auth{grid-template-columns:1fr;grid-template-rows:auto 1fr}
  .auth-brand{padding:var(--s5) var(--s5) var(--s6);gap:var(--s5)}
  .beacon{position:absolute;right:-60px;top:-40px;width:240px;margin:0;opacity:.85}
  .brand-copy h1{font-size:1.875rem;max-width:16ch}
  .brand-copy p{font-size:1rem;margin-top:var(--s3)}
  .brand-foot{display:none}
  .auth-panel{justify-content:flex-start;padding:var(--s5) var(--s4) var(--s7);margin-top:calc(-1 * var(--s4))}
  .auth-card{border-radius:18px}
}

/* dark: the page goes dark too, so the brand panel gets a deeper black and a hairline edge to keep the split */
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .auth-brand{background:#0B0A09;box-shadow:inset -1px 0 0 rgba(255,255,255,.07)}}
:root[data-theme="dark"] .auth-brand{background:#0B0A09;box-shadow:inset -1px 0 0 rgba(255,255,255,.07)}
@media (max-width:900px){
  .beacon{margin:0}
  @media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .auth-brand{box-shadow:inset 0 -1px 0 rgba(255,255,255,.07)}}
  :root[data-theme="dark"] .auth-brand{box-shadow:inset 0 -1px 0 rgba(255,255,255,.07)}
}
.auth-foot .link-btn{border:0;background:none;padding:0;color:var(--ink);font:inherit;font-weight:600;text-decoration:underline;text-decoration-color:var(--gold-fill);text-decoration-thickness:2px;text-underline-offset:4px;cursor:pointer;min-height:44px}
.inv-logo{display:flex;justify-content:center;margin-bottom:var(--s5)}