/* =====================================================================
   Sign-up + verify page — light monochrome, single theme.

   Design language borrowed from DeepSeek Harness
   (packages/client/ui-theme/src/styles/{base,design-platform}.css and
   apps/desktop/renderer/welcome.css): near-black brand fill with inverted
   label, hairline borders, 48px inputs / 44px buttons, typography-led
   hierarchy, 0.2s cubic-bezier(.4,0,.2,1) motion, colour reserved for state.

   Self-contained: every class is namespaced .ad-* so the rest of the site
   (and the older .auth-* pages) is untouched.
   ===================================================================== */

.auth-page.ad-page{background:#fff}

/* A class-level `display` beats the UA's [hidden] rule, which would leave the
   form visible during verification and the password meter permanently shown. */
.ad [hidden]{display:none!important}

.ad{
  --ink:#0f1115;
  --ink-2:#61666b;
  --ink-3:#81858c;
  --cap:#adb2b8;
  --line:rgba(0,0,0,.1);
  --line-2:rgba(0,0,0,.16);
  --hover:#f1f3f5;
  --hover-soft:rgba(38,49,72,.06);
  --brand:#0f1115;
  --brand-hover:#43454a;
  --link:#4176e6;
  --err:#ec1313;
  --ok:#22c55e;
  --warn:#f59e0b;
  --r-sm:8px; --r-md:12px; --r-btn:10px; --r-lg:16px;
  --dur:.2s; --ease:cubic-bezier(.4,0,.2,1);
  max-width:440px;margin:0 auto;color:var(--ink);font-family:var(--font);
}
.ad-page .auth-main{padding:44px 0 72px;min-height:calc(100vh - 64px - 41px)}

/* ---------- brand lockup (the site's real mark) ---------- */
.ad-brand{display:flex;align-items:center;justify-content:center;gap:9px;user-select:none}
.ad-brand .brand-mark{width:26px;height:26px;color:var(--ink)}
.ad-brand span{font-family:var(--display);font-size:16px;font-weight:650;letter-spacing:-.02em;color:var(--ink)}

/* ---------- tagline: light weight with a medium-weight emphasis ---------- */
.ad-tagline{
  margin:18px 0 0;text-align:center;font-family:var(--display);
  font-size:22px;line-height:32px;font-weight:300;letter-spacing:-.01em;color:var(--ink-2);
}
.ad-tagline em{font-style:normal;font-weight:500;color:var(--ink)}

/* ---------- the column ---------- */
.ad-col{margin-top:28px;display:flex;flex-direction:column;gap:24px}
.ad-head{display:flex;flex-direction:column;gap:8px;text-align:center}
.ad-h1{margin:0;font-family:var(--display);font-size:20px;line-height:30px;font-weight:450;letter-spacing:-.01em;color:var(--ink)}
.ad-sub{margin:0;font-size:15px;line-height:23px;font-weight:300;color:var(--ink-2)}
.ad-sub strong{font-weight:500;color:var(--ink);overflow-wrap:anywhere}
.ad-step{margin:0;font-size:12px;line-height:20px;letter-spacing:.02em;color:var(--cap)}
.ad-step b{font-weight:500;color:var(--ink)}

/* ---------- form ---------- */
.ad-form{display:flex;flex-direction:column;gap:18px;text-align:left}
.ad-field{display:flex;flex-direction:column;gap:8px}
.ad-label{font-size:14px;line-height:22px;font-weight:500;color:var(--ink)}
.ad-control{position:relative;display:flex;align-items:center}
.ad-input{
  width:100%;height:48px;padding:7px 14px;
  border:1px solid var(--line-2);border-radius:var(--r-md);
  background:transparent;color:var(--ink);
  font-family:inherit;font-size:15px;line-height:24px;
  outline:none;
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.ad-input::placeholder{color:var(--cap);opacity:1}
.ad-input:hover{border-color:var(--ink-3)}
.ad-input:focus{border-color:var(--ink)}
.ad-control.has-trail .ad-input{padding-right:66px}
.ad-trail{
  position:absolute;right:10px;border:0;background:transparent;padding:4px 8px;border-radius:var(--r-sm);
  color:var(--ink-3);font-family:inherit;font-size:14px;line-height:20px;font-weight:500;cursor:pointer;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.ad-trail:hover{color:var(--ink);background:var(--hover-soft)}
.ad-hint{margin:0;font-size:14px;line-height:20px;color:var(--cap)}

/* password strength + requirements */
.ad-meter{display:flex;align-items:center;gap:12px}
.ad-meter-track{display:flex;gap:4px;flex:1}
.ad-meter-track i{height:2px;flex:1;border-radius:2px;background:var(--line);transition:background-color var(--dur) var(--ease)}
.ad-meter-track i.on.is-weak{background:var(--err)}
.ad-meter-track i.on.is-medium{background:var(--warn)}
.ad-meter-track i.on.is-strong{background:var(--ok)}
.ad-strength{font-size:14px;line-height:20px;color:var(--cap)}
.ad-strength.is-weak{color:var(--err)}
.ad-strength.is-medium{color:var(--warn)}
.ad-strength.is-strong{color:var(--ok)}
.ad-reqs{display:flex;flex-wrap:wrap;gap:4px 16px;margin:0;padding:0;list-style:none}
.ad-reqs li{font-size:14px;line-height:20px;color:var(--cap);transition:color var(--dur) var(--ease)}
.ad-reqs li::before{content:"—";margin-right:6px;color:var(--line-2)}
.ad-reqs li[data-met="1"]{color:var(--ink)}
.ad-reqs li[data-met="1"]::before{content:"✓";color:var(--ok)}

/* ---------- buttons ---------- */
.ad-btn{
  display:flex;align-items:center;justify-content:center;gap:9px;width:100%;
  height:44px;padding:0 16px;border:1px solid transparent;border-radius:var(--r-btn);
  font-family:var(--font);font-size:15px;line-height:22px;font-weight:500;cursor:pointer;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.ad-btn:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.ad-btn:disabled{cursor:not-allowed;opacity:.4}
.ad-btn-primary{background:var(--brand);color:#fff}
.ad-btn-primary:hover:not(:disabled){background:var(--brand-hover)}
.ad-btn-secondary{background:#fff;border-color:var(--line);color:var(--ink)}
.ad-btn-secondary:hover:not(:disabled){background:var(--hover)}
.ad-btn svg{flex:none}
.ad-oauth .oauth-icon{width:17px;height:17px}
.ad-turnstile{display:flex;justify-content:center;margin:2px 0}
.ad-textbtn{
  border:0;background:transparent;padding:4px 2px;margin:0;
  color:var(--ink-2);font-family:inherit;font-size:14px;line-height:20px;cursor:pointer;
  text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
  transition:color var(--dur) var(--ease);
}
.ad-textbtn:hover:not(:disabled){color:var(--ink)}
.ad-textbtn:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:4px}
.ad-textbtn:disabled{cursor:default;opacity:.45}

.ad-divider{display:flex;align-items:center;gap:12px;margin:2px 0;color:var(--cap);font-size:14px}
/* Only offer "or sign up with email" when the Google button is actually there. */
.ad-oauth[hidden] + .ad-divider{display:none}
.ad-divider::before,.ad-divider::after{content:"";flex:1;height:1px;background:var(--line)}
.ad-legal{margin:0;font-size:14px;line-height:20px;color:var(--cap);text-align:center}
.ad-link{color:var(--link);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.ad-link:hover{color:var(--ink)}
.ad-error{margin:0;font-size:14px;line-height:20px;color:var(--err)}
.ad-success{margin:0;font-size:14px;line-height:20px;color:var(--ink-2);text-align:center}

/* ---------- code entry ---------- */
.ad-otp{display:flex;gap:8px;width:100%}
.ad-otp-box{
  flex:1 1 0;min-width:0;height:56px;padding:0;text-align:center;border-radius:var(--r-md);
  border:1px solid var(--line-2);background:transparent;color:var(--ink);
  font-family:var(--font);font-size:20px;font-weight:500;font-variant-numeric:tabular-nums;
  outline:none;transition:border-color var(--dur) var(--ease);
}
.ad-otp-box:hover{border-color:var(--ink-3)}
.ad-otp-box:focus{border-color:var(--ink)}
.ad-otp-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:2px;font-size:14px;line-height:20px;color:var(--cap)}
.ad-otp-meta b{font-weight:500;color:var(--ink);font-variant-numeric:tabular-nums}
.ad-visually-hidden{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.ad-actions{display:flex;flex-direction:column;gap:16px;align-items:center;margin-top:6px}
.ad-note{margin:0;font-size:14px;line-height:20px;color:var(--cap);text-align:center}
.ad-note strong{font-weight:500;color:var(--ink)}

.ad-foot{margin:0;font-size:14px;line-height:22px;color:var(--ink-2);text-align:center}
.ad-cap{margin:0;font-size:14px;line-height:20px;color:var(--cap);text-align:center}
.ad-cap span+span::before{content:"·";margin:0 8px;color:var(--line-2)}
.ad-dev{margin:0;font-size:13px;line-height:20px;color:var(--ink-2);text-align:center;background:var(--hover-soft);border-radius:var(--r-sm);padding:8px 10px}

@media (max-width:640px){
  .auth-main{padding:28px 0 56px}
  .ad-tagline{font-size:19px;line-height:28px}
  .ad-otp{gap:6px}
  .ad-otp-box{height:52px;font-size:18px}
}
@media (prefers-reduced-motion:reduce){
  .ad *{transition:none!important}
}

/* ---------- sign-in / workspace picker ---------- */
.ad-row{display:flex;justify-content:flex-end;margin:-6px 0 0}
.ad-row .ad-link{font-size:14px}
.ad-ws-list{display:flex;flex-direction:column;gap:8px}
.ad-ws-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;height:48px;
  padding:0 14px;border:1px solid var(--line);border-radius:var(--r-md);background:#fff;color:var(--ink);
  font-family:var(--font);font-size:15px;font-weight:500;text-align:left;cursor:pointer;
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.ad-ws-item:hover{background:var(--hover);border-color:var(--line-2)}
.ad-ws-item:focus-visible{outline:2px solid var(--ink);outline-offset:3px}
.ad-ws-role{font-size:14px;font-weight:400;color:var(--cap)}

/* anchors styled as buttons, and the dev-only link pill */
a.ad-btn{text-decoration:none}
a.ad-dev{display:block;text-decoration:none}
a.ad-dev:hover{background:var(--hover)}