/*
 * BY.209, branded server-rendered sign-in. Mirrors the
 * `--ttq-*` light-mode values emitted by @tawqi3/theme. Drift
 * with Frontend/packages/theme/src/tokens.ts is a review block;
 * Tools/scripts/emit-css-tokens.mjs is the canonical mirror
 * generator for the static Website tokens.css.
 */
:root {
  --ttq-color-brand-primary: #5B2EE6;
  --ttq-color-brand-accent: #F26B1A;
  --ttq-color-brand-black: #0A0A0F;
  --ttq-color-surface-base: #FFFFFF;
  --ttq-color-surface-raised: #F6F6F8;
  --ttq-color-surface-sunken: #ECECF1;
  --ttq-color-surface-brand: #F4EFFF;
  --ttq-color-text-primary: #0A0A0F;
  --ttq-color-text-secondary: #4F5462;
  --ttq-color-text-muted: #6E7384;
  --ttq-color-text-inverse: #FFFFFF;
  --ttq-color-border-subtle: #ECECF1;
  --ttq-color-border-strong: #BEC0CD;
  --ttq-color-state-danger: #C32C5A;
  --ttq-color-focus-ring: #5B2EE6;
  --ttq-font-family-sans: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --ttq-font-size-xs: 0.75rem;
  --ttq-font-size-sm: 0.875rem;
  --ttq-font-size-md: 1rem;
  --ttq-font-size-lg: 1.125rem;
  --ttq-font-size-xl: 1.25rem;
  --ttq-font-size-2xl: 1.5rem;
  --ttq-space-2: 0.5rem;
  --ttq-space-3: 0.75rem;
  --ttq-space-4: 1rem;
  --ttq-space-5: 1.25rem;
  --ttq-space-6: 1.5rem;
  --ttq-space-8: 2rem;
  --ttq-space-10: 2.5rem;
  --ttq-radius-sm: 0.25rem;
  --ttq-radius-md: 0.5rem;
  --ttq-radius-lg: 0.75rem;
  --ttq-elevation-2: 0 4px 12px rgba(10,10,15,0.08), 0 2px 4px rgba(10,10,15,0.04);
  --ttq-elevation-brandGlow: 0 12px 40px rgba(91,46,230,0.25), 0 4px 12px rgba(91,46,230,0.18);
  --ttq-motion-duration-fast: 120ms;
  --ttq-motion-duration-normal: 200ms;
  --ttq-motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
}
@media (prefers-color-scheme: dark) {
  :root {
    --ttq-color-brand-primary: #B59BFF;
    --ttq-color-surface-base: #0A0A0F;
    --ttq-color-surface-raised: #15161B;
    --ttq-color-surface-sunken: #070709;
    --ttq-color-surface-brand: #1A1230;
    --ttq-color-text-primary: #E9EBF0;
    --ttq-color-text-secondary: #9498A8;
    --ttq-color-text-muted: #6A6F7E;
    --ttq-color-text-inverse: #0A0A0F;
    --ttq-color-border-subtle: #262932;
    --ttq-color-border-strong: #4A4F5C;
    --ttq-color-state-danger: #FF7A9E;
    --ttq-color-focus-ring: #B59BFF;
  }
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--ttq-font-family-sans);
  font-size: var(--ttq-font-size-md);
  color: var(--ttq-color-text-primary);
  background:
    radial-gradient(circle at 15% 0%, rgba(91,46,230,0.10) 0%, transparent 45%),
    radial-gradient(circle at 90% 90%, rgba(242,107,26,0.06) 0%, transparent 50%),
    var(--ttq-color-surface-sunken);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--ttq-space-6);
}
.signin {
  width: 100%;
  max-width: 26rem;
  background: var(--ttq-color-surface-base);
  border: 1px solid var(--ttq-color-border-subtle);
  border-radius: var(--ttq-radius-lg);
  box-shadow: var(--ttq-elevation-2);
  padding: var(--ttq-space-8);
}
.signin__brand {
  display: flex;
  align-items: center;
  gap: var(--ttq-space-3);
  margin-bottom: var(--ttq-space-6);
}
.signin__brand svg.signin__wordmark {
  height: 1.75rem;
  width: auto;
  color: var(--ttq-color-text-primary);
  display: block;
}
.signin__brand .signin__ops {
  font-size: var(--ttq-font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ttq-color-text-muted);
  padding-top: 0.3rem;
}
h1 {
  font-size: var(--ttq-font-size-2xl);
  font-weight: 600;
  margin: 0 0 var(--ttq-space-2) 0;
  color: var(--ttq-color-text-primary);
  letter-spacing: -0.01em;
}
.signin__sub {
  margin: 0 0 var(--ttq-space-6) 0;
  color: var(--ttq-color-text-secondary);
  font-size: var(--ttq-font-size-sm);
  line-height: 1.5;
}
label {
  display: block;
  margin-top: var(--ttq-space-4);
  font-size: var(--ttq-font-size-sm);
  font-weight: 500;
  color: var(--ttq-color-text-secondary);
}
label > .signin__hint {
  font-weight: 400;
  color: var(--ttq-color-text-muted);
  font-size: var(--ttq-font-size-xs);
  margin-left: var(--ttq-space-2);
}
input[type="email"],
input[type="password"],
input[type="text"] {
  display: block;
  width: 100%;
  margin-top: var(--ttq-space-2);
  padding: 0.625rem 0.75rem;
  border: 1px solid var(--ttq-color-border-strong);
  border-radius: var(--ttq-radius-md);
  background: var(--ttq-color-surface-base);
  color: var(--ttq-color-text-primary);
  font: inherit;
  font-size: var(--ttq-font-size-md);
  transition:
    border-color var(--ttq-motion-duration-fast) var(--ttq-motion-easing-standard),
    box-shadow var(--ttq-motion-duration-fast) var(--ttq-motion-easing-standard);
}
input:focus-visible {
  outline: none;
  border-color: var(--ttq-color-focus-ring);
  box-shadow: 0 0 0 3px rgba(91,46,230,0.20);
}
input::placeholder {
  color: var(--ttq-color-text-muted);
}
button[type="submit"] {
  display: block;
  width: 100%;
  margin-top: var(--ttq-space-6);
  padding: 0.75rem 1rem;
  border: 0;
  border-radius: var(--ttq-radius-md);
  background: var(--ttq-color-brand-primary);
  color: var(--ttq-color-text-inverse);
  font: inherit;
  font-size: var(--ttq-font-size-md);
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  box-shadow: var(--ttq-elevation-brandGlow);
  transition:
    transform var(--ttq-motion-duration-fast) var(--ttq-motion-easing-standard),
    filter var(--ttq-motion-duration-fast) var(--ttq-motion-easing-standard);
}
button[type="submit"]:hover { filter: brightness(1.08); }
button[type="submit"]:active { transform: translateY(1px); }
button[type="submit"]:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px rgba(91,46,230,0.30),
    var(--ttq-elevation-brandGlow);
}
@media (prefers-reduced-motion: reduce) {
  input, button[type="submit"] { transition: none; }
}
.signin__error {
  margin-top: var(--ttq-space-4);
  padding: var(--ttq-space-3) var(--ttq-space-4);
  background: rgba(195,44,90,0.08);
  border-left: 3px solid var(--ttq-color-state-danger);
  border-radius: var(--ttq-radius-sm);
  color: var(--ttq-color-state-danger);
  font-size: var(--ttq-font-size-sm);
}
.signin__footer {
  margin-top: var(--ttq-space-6);
  padding-top: var(--ttq-space-4);
  border-top: 1px solid var(--ttq-color-border-subtle);
  color: var(--ttq-color-text-muted);
  font-size: var(--ttq-font-size-xs);
  line-height: 1.5;
}
.signin__footer a {
  color: var(--ttq-color-brand-primary);
  text-decoration: none;
}
.signin__footer a:hover { text-decoration: underline; }

/* BY.212, method selector + progressive disclosure ---------------- */
.signin__methods {
  display: grid;
  gap: var(--ttq-space-3);
  margin-top: var(--ttq-space-5);
}
.signin__method {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--ttq-space-2);
  width: 100%;
  padding: 0.7rem 1rem;
  border: 1px solid var(--ttq-color-border-strong);
  border-radius: var(--ttq-radius-md);
  background: var(--ttq-color-surface-base);
  color: var(--ttq-color-text-primary);
  font: inherit;
  font-size: var(--ttq-font-size-md);
  font-weight: 500;
  cursor: pointer;
  transition:
    border-color var(--ttq-motion-duration-fast) var(--ttq-motion-easing-standard),
    background var(--ttq-motion-duration-fast) var(--ttq-motion-easing-standard);
}
.signin__method:hover {
  border-color: var(--ttq-color-brand-primary);
  background: var(--ttq-color-surface-brand);
}
.signin__method:focus-visible {
  outline: none;
  border-color: var(--ttq-color-focus-ring);
  box-shadow: 0 0 0 3px rgba(91,46,230,0.20);
}
.signin__method[data-variant="primary"] {
  border-color: var(--ttq-color-brand-primary);
  background: var(--ttq-color-brand-primary);
  color: var(--ttq-color-text-inverse);
  box-shadow: var(--ttq-elevation-brandGlow);
  font-weight: 600;
}
.signin__method[data-variant="primary"]:hover {
  filter: brightness(1.08);
  background: var(--ttq-color-brand-primary);
}
.signin__method svg {
  width: 1rem;
  height: 1rem;
  flex-shrink: 0;
}
.signin__method[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
}
.signin__hidden { display: none !important; }
.signin__back {
  display: inline-flex;
  align-items: center;
  gap: var(--ttq-space-2);
  margin-top: var(--ttq-space-4);
  background: transparent;
  border: 0;
  padding: 0;
  color: var(--ttq-color-text-secondary);
  font: inherit;
  font-size: var(--ttq-font-size-sm);
  cursor: pointer;
}
.signin__back:hover { color: var(--ttq-color-brand-primary); }
.signin__status {
  margin-top: var(--ttq-space-4);
  padding: var(--ttq-space-3) var(--ttq-space-4);
  background: var(--ttq-color-surface-raised);
  border-left: 3px solid var(--ttq-color-brand-primary);
  border-radius: var(--ttq-radius-sm);
  color: var(--ttq-color-text-secondary);
  font-size: var(--ttq-font-size-sm);
}