:root {
  --alert-surface: #f8fafc;
  --alert-text: #0f172a;
  --alert-primary: var(--color-1, #2563eb);
  --alert-secondary: var(--color-2, #10b981);
}

.alert-container {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 9999;
}

.alert-box {
  background: var(--alert-surface);
  color: var(--alert-text);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  text-align: center;
  min-width: 300px;
  max-width: 90vw;
}

.alert-box p { margin: 0 0 12px; font-size: 1rem; }

.alert-box button {
  background: var(--alert-primary);
  color: #fff;
  border: none;
  padding: 8px 20px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: bold;
}

.alert-box button:hover { background: var(--alert-secondary); }
.alert-container.show { visibility: visible; opacity: 1; }

.confirm-container {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  visibility: hidden;
  opacity: 0;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  z-index: 9999;
}

.confirm-box {
  background: var(--alert-surface);
  color: var(--alert-text);
  padding: 24px;
  border-radius: 10px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
  text-align: center;
  min-width: 300px;
  max-width: 90vw;
}

.confirm-box p { margin: 0 0 16px; font-size: 1rem; }

.confirm-box button {
  background: var(--alert-primary);
  color: #fff;
  border: none;
  padding: 8px 20px;
  margin: 4px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: bold;
}

.confirm-box button:hover { background: var(--alert-secondary); }
.confirm-container.show { visibility: visible; opacity: 1; }

.popup-active .alert-container { background: rgba(255,255,255,0.15); backdrop-filter: blur(4px); }
.popup-active .alert-box { background: rgba(255,69,58,0.9); color: white; border-radius: 12px; }
.popup-active .alert-box button { background: white; color: #333; }

.loader-container {
  display: none;
  position: fixed;
  inset: 0;
  justify-content: center;
  align-items: center;
  background: rgba(0,0,0,0.35);
  z-index: 10000;
}

.loader-container.show { display: flex; }

.loader {
  width: 60px;
  height: 60px;
  border: 5px solid rgba(255,255,255,0.3);
  border-top-color: var(--alert-primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }