/*
 * auth.css — Challenge v2 auth view.
 * Scope: #view-auth only. Theme-matches the Velvet Aurora dashboard
 * (obsidian + gold), but without its heavy motion stack.
 */

#view-auth {
  --au-bg:        #070410;
  --au-bg-2:      #120A1E;
  --au-surface:   #1A0F2A;
  --au-surface-2: #231538;
  --au-text:      #F5EFE3;
  --au-text-2:    #B8AECA;
  --au-text-3:    #857698;
  --au-gold:      #F0B65C;
  --au-crimson:   #FF4477;
  --au-rule:      rgba(245, 239, 227, 0.08);
  --au-rule-2:    rgba(245, 239, 227, 0.04);

  --au-display:   'Fraunces', 'Iowan Old Style', Georgia, serif;
  --au-body:      'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;

  position: relative;
  box-sizing: border-box;
  min-height: calc(100vh - 44px);
  padding: 48px 24px;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(133, 103, 255, 0.12), transparent 60%),
    radial-gradient(ellipse at 80% 90%, rgba(240, 182, 92, 0.08), transparent 55%),
    var(--au-bg);
  color: var(--au-text);
  font-family: var(--au-body);
  align-items: center;
  justify-content: center;
  overflow-y: auto;
}

/* Only apply flex layout when the view is active so the global
   .view{display:none} rule still hides it at rest. The ID selector
   beats the class selector on specificity (1,0,0 vs 0,1,0), so we
   only set display here. */
#view-auth.active { display: flex; }

#view-auth .au-card {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, var(--au-surface) 0%, var(--au-bg-2) 100%);
  border: 1px solid var(--au-rule);
  border-radius: 18px;
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.6), 0 0 0 1px var(--au-rule-2) inset;
  padding: 36px 32px;
}

#view-auth .au-brand {
  font-family: var(--au-display);
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}
#view-auth .au-brand em {
  color: var(--au-gold);
  font-style: normal;
}
#view-auth .au-sub {
  color: var(--au-text-3);
  font-size: 13px;
  margin-bottom: 24px;
}

#view-auth .au-tabs {
  display: flex;
  gap: 2px;
  background: var(--au-bg-2);
  border: 1px solid var(--au-rule);
  border-radius: 10px;
  padding: 3px;
  margin-bottom: 20px;
}
#view-auth .au-tab {
  flex: 1;
  padding: 9px 0;
  border: 0;
  background: transparent;
  color: var(--au-text-2);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  border-radius: 7px;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}
#view-auth .au-tab:hover { color: var(--au-text); }
#view-auth .au-tab[aria-selected="true"] {
  background: var(--au-surface-2);
  color: var(--au-text);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.25);
}

#view-auth .au-field {
  display: block;
  margin-bottom: 14px;
}
#view-auth .au-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--au-text-2);
  margin-bottom: 6px;
  text-transform: uppercase;
}
#view-auth .au-input {
  width: 100%;
  box-sizing: border-box;
  background: var(--au-bg);
  border: 1px solid var(--au-rule);
  border-radius: 10px;
  padding: 11px 13px;
  color: var(--au-text);
  font: inherit;
  font-size: 14px;
  outline: none;
  transition: border-color 140ms ease, box-shadow 140ms ease;
}
#view-auth .au-input:focus-visible {
  border-color: var(--au-gold);
  box-shadow: 0 0 0 3px rgba(240, 182, 92, 0.18);
}
#view-auth .au-input[aria-invalid="true"] {
  border-color: var(--au-crimson);
}
#view-auth .au-hint {
  font-size: 11.5px;
  color: var(--au-text-3);
  margin-top: 6px;
}

#view-auth .au-primary {
  width: 100%;
  padding: 12px 16px;
  border: 0;
  border-radius: 10px;
  background: var(--au-gold);
  color: #1A0F02;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 120ms ease, filter 140ms ease;
}
#view-auth .au-primary:hover:not(:disabled) { filter: brightness(1.06); }
#view-auth .au-primary:active:not(:disabled) { transform: translateY(1px); }
#view-auth .au-primary:disabled { opacity: 0.55; cursor: not-allowed; }

#view-auth .au-linkbtn {
  display: inline-block;
  background: none;
  border: 0;
  color: var(--au-text-2);
  font: inherit;
  font-size: 12.5px;
  padding: 0;
  margin-top: 14px;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(184, 174, 202, 0.35);
}
#view-auth .au-linkbtn:hover { color: var(--au-gold); text-decoration-color: var(--au-gold); }

#view-auth .au-error {
  min-height: 20px;
  color: var(--au-crimson);
  font-size: 12.5px;
  margin: 8px 0 14px;
}
#view-auth .au-ok {
  min-height: 20px;
  color: #48E0A4;
  font-size: 12.5px;
  margin: 8px 0 14px;
}

#view-auth .au-mode { display: none; }
#view-auth .au-mode.is-active { display: block; }

#view-auth .au-footer {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--au-rule);
  text-align: center;
  font-size: 12px;
  color: var(--au-text-3);
}

/* Username-pick mode — tighter, preview chip */
#view-auth .au-pick-preview {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--au-bg-2);
  border: 1px solid var(--au-rule);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--au-text-2);
}
#view-auth .au-pick-preview strong { color: var(--au-gold); font-weight: 600; }

@media (max-width: 480px) {
  #view-auth { padding: 24px 16px; }
  #view-auth .au-card { padding: 28px 22px; }
}