/* BioStudio AI — authentication gate */

.auth-gate {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, #0a1628 0%, #1a2d4a 40%, #0d2137 100%);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  transition: opacity 0.4s ease;
}

.auth-gate.fade-out {
  opacity: 0;
  pointer-events: none;
}

.auth-card {
  width: min(420px, 92vw);
  padding: 2.5rem 2rem 2rem;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(24px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
  color: #e8edf5;
}

.auth-brand {
  text-align: center;
  margin-bottom: 1.75rem;
}

.auth-logo {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.auth-brand h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.auth-tagline {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
}

.auth-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 10px;
  padding: 4px;
}

.auth-tab {
  flex: 1;
  padding: 0.55rem;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.auth-tab.active {
  background: rgba(47, 107, 255, 0.35);
  color: #fff;
}

.auth-field {
  margin-bottom: 1rem;
}

.auth-field label {
  display: block;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 0.35rem;
}

.auth-field input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.65rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.25);
  color: #fff;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s;
}

.auth-field input:focus {
  border-color: #2f6bff;
}

.auth-error {
  margin: 0 0 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  background: rgba(220, 53, 69, 0.2);
  color: #ff8a95;
  font-size: 0.85rem;
}

.auth-info {
  margin: 0 0 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  background: rgba(47, 107, 255, 0.15);
  color: #8ab4ff;
  font-size: 0.85rem;
}

.auth-submit {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 8px;
  background: #2f6bff;
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.auth-submit:hover:not(:disabled) {
  background: #2558d4;
}

.auth-submit:disabled {
  opacity: 0.6;
  cursor: wait;
}

.auth-forgot {
  display: block;
  width: 100%;
  margin-top: 1rem;
  padding: 0.5rem;
  border: none;
  background: transparent;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: underline;
}

.auth-forgot:hover {
  color: rgba(255, 255, 255, 0.7);
}

.auth-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 1.25rem 0 1rem;
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.8rem;
}

.auth-divider::before,
.auth-divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(255, 255, 255, 0.15);
}

.auth-guest-btn {
  width: 100%;
  padding: 0.7rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: #e8edf5;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.auth-guest-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.35);
}

.auth-guest-note {
  margin: 0.75rem 0 0;
  font-size: 0.78rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.45);
  text-align: center;
}

.auth-setup-msg {
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.7);
}

.auth-setup-msg code {
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.3);
  font-size: 0.85em;
}

/* Sync status indicator in taskbar */
.sync-status {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  cursor: default;
  color: rgba(255, 255, 255, 0.7);
}

.sync-status.synced { color: #4ade80; }
.sync-status.syncing { color: #fbbf24; }
.sync-status.offline { color: rgba(255, 255, 255, 0.45); }
.sync-status.error { color: #f87171; }