/* ── AUTH SCREEN ── */
#auth-screen {
  position: fixed; inset: 0; z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  background:
    radial-gradient(ellipse 60% 50% at 30% 70%, rgba(123,104,238,0.07) 0%, transparent 65%),
    radial-gradient(ellipse 50% 50% at 75% 25%, rgba(62,207,142,0.05) 0%, transparent 65%),
    var(--bg);
}

/* dot grid */
#auth-screen::before {
  content: '';
  position: absolute; inset: 0;
  background-image: radial-gradient(circle, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 30px 30px;
  pointer-events: none;
}

#auth-card {
  position: relative; z-index: 1;
  background: var(--surface);
  border: 1px solid var(--border-md);
  border-radius: 18px;
  padding: 44px 40px;
  width: 380px;
  box-shadow: var(--shadow-lg);
  display: flex; flex-direction: column; align-items: center;
  gap: 0;
  animation: authCardIn 0.4s cubic-bezier(0.34,1.3,0.64,1) forwards;
}

@keyframes authCardIn {
  from { opacity: 0; transform: scale(0.93) translateY(10px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}

#auth-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 16px; font-weight: 500;
  color: var(--text); margin-bottom: 32px;
}

#auth-logo-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 20px rgba(123,104,238,0.35);
}
#auth-logo-mark svg { width: 20px; height: 20px; }

#auth-headline {
  font-size: 26px; font-weight: 500; color: var(--text);
  text-align: center; letter-spacing: -0.5px;
  margin-bottom: 10px; line-height: 1.2;
}

#auth-sub {
  font-size: 13px; color: var(--text-muted); text-align: center;
  line-height: 1.6; margin-bottom: 36px; max-width: 280px;
}

#google-signin-btn {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; padding: 11px 20px;
  background: var(--surface2); border: 1px solid var(--border-md);
  border-radius: var(--radius-sm); color: var(--text);
  font-size: 14px; font-weight: 400;
  transition: all var(--transition);
  margin-bottom: 10px;
}
#google-signin-btn:hover {
  background: var(--surface3); border-color: var(--border-hi);
  box-shadow: var(--shadow-sm);
}

#guest-btn {
  display: flex; align-items: center; justify-content: center;
  width: 100%; padding: 10px 20px;
  background: transparent; border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-muted);
  font-size: 13px; transition: all var(--transition);
  margin-bottom: 16px;
}
#guest-btn:hover { background: var(--surface2); color: var(--text); border-color: var(--border-md); }

#auth-note {
  font-size: 11px; color: var(--text-dim); text-align: center; line-height: 1.5;
}