/* Auth (login/signup) overlay — same family as onboarding */

.auth-overlay {
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse at center, #100d1f 0%, #06050d 90%);
  z-index: 998;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
}
.auth-overlay.active { display: flex; }

.auth-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 25% 30%, rgba(167, 139, 250, 0.25), transparent 40%),
    radial-gradient(circle at 75% 70%, rgba(34, 211, 238, 0.18), transparent 40%);
  pointer-events: none;
}
.auth-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(167, 139, 250, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(167, 139, 250, 0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  pointer-events: none;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.auth-card {
  position: relative;
  background: linear-gradient(180deg, rgba(24, 20, 48, 0.85), rgba(16, 13, 31, 0.85));
  border: 1px solid var(--border-mid);
  border-radius: 24px;
  padding: 40px;
  max-width: 460px;
  width: 100%;
  box-shadow: 0 32px 80px rgba(0,0,0,0.7), 0 0 64px rgba(167, 139, 250, 0.18);
  backdrop-filter: blur(30px);
  z-index: 1;
}

.auth-header { text-align: center; margin-bottom: 28px; }
.auth-header .mark {
  width: 56px; height: 56px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--amber-deep), var(--amber));
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 18px;
  color: white;
  box-shadow: 0 0 32px var(--amber-glow);
}
.auth-header .mark svg { width: 24px; height: 24px; }

.auth-title { font-family: 'Instrument Serif', serif; font-size: 28px; color: var(--text-0); }
.auth-sub { font-size: 13px; color: var(--text-2); margin-top: 4px; }

.auth-mode-toggle {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 22px;
}
.auth-mode-toggle button {
  flex: 1;
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-1);
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s;
}
.auth-mode-toggle button.active { background: var(--bg-4); color: var(--text-0); }

.auth-input {
  width: 100%;
  height: 48px;
  padding: 0 16px;
  background: var(--bg-3);
  border: 1px solid var(--border-mid);
  border-radius: 12px;
  color: var(--text-0);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: all 0.15s;
  margin-bottom: 12px;
}
.auth-input:focus { border-color: var(--amber); box-shadow: 0 0 16px var(--amber-glow); }

.auth-label {
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-2);
  font-weight: 700;
  margin-bottom: 6px;
  margin-top: 4px;
}

.auth-error {
  font-size: 12px;
  color: var(--danger);
  background: var(--danger-bg);
  border: 1px solid var(--danger-border);
  border-radius: 8px;
  padding: 8px 12px;
  margin-bottom: 12px;
  min-height: 0;
  display: none;
}
.auth-error:not(:empty) { display: block; }

.auth-av-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}
.auth-av {
  aspect-ratio: 1;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'Instrument Serif', serif;
  font-size: 16px;
  color: white;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.15s;
}
.auth-av:hover { transform: translateY(-2px); }
.auth-av.selected {
  border-color: var(--amber-soft);
  box-shadow: 0 0 16px var(--amber-glow);
  transform: scale(1.06);
}

.auth-submit {
  width: 100%;
  height: 48px;
  border-radius: 12px;
  border: 1px solid var(--amber-soft);
  background: linear-gradient(135deg, var(--amber), var(--amber-deep));
  color: white;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  margin-top: 12px;
  box-shadow: 0 4px 24px var(--amber-glow);
  transition: all 0.15s;
}
.auth-submit:hover { box-shadow: 0 4px 32px var(--amber-glow); transform: translateY(-1px); }

.auth-foot {
  margin-top: 16px;
  text-align: center;
  font-size: 11px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.auth-foot a {
  color: var(--violet-soft);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.auth-foot a:hover { color: var(--amber); }

@media (max-width: 480px) {
  .auth-card { padding: 28px; }
  .auth-title { font-size: 22px; }
}