/* ─── Mobile Overlay ─────────────────────────── */
.mobile-overlay {
  display: none;
}

/* ─── Auth Loading Screen ───────────────────── */
#auth-loading {
  position: fixed;
  inset: 0;
  background: var(--ribbon-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  z-index: 2000;
}
#auth-loading.hidden { display: none; }
.auth-loading-icon { opacity: 0.95; }
@keyframes authSpin {
  to { transform: rotate(360deg); }
}
.auth-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: authSpin 0.75s linear infinite;
}

/* ─── Login Overlay ─────────────────────────── */
.login-overlay {
  position: fixed;
  inset: 0;
  background: rgba(32, 32, 32, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(2px);
}
.login-overlay.hidden { display: none; }
.excel-window.hidden { display: none; }
.login-card {
  background: #fff;
  border-radius: 8px;
  padding: 40px 48px;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,0.35);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  min-width: 320px;
}
.login-card h2 {
  font-family: var(--font-ui);
  font-size: 20px;
  font-weight: 700;
  color: var(--chrome-text);
  margin: 0;
}
.login-card p {
  font-family: var(--font-ui);
  font-size: 13px;
  color: #666;
  line-height: 1.6;
  margin: 0;
}
.btn-google {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border: 1px solid #dadce0;
  border-radius: 4px;
  padding: 10px 20px;
  font-family: var(--font-ui);
  font-size: 14px;
  color: #3c4043;
  cursor: pointer;
  font-weight: 500;
  margin-top: 8px;
  transition: background 0.15s, box-shadow 0.15s;
}
.btn-google:hover {
  background: #f8f9fa;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
}

@media (max-width: 480px) {
  .login-card {
    width: calc(100% - 32px);
    min-width: unset;
    max-width: 100%;
    margin: 0 16px;
    box-sizing: border-box;
  }
}