:root {
  --app-max-width: 1280px;
}

/* Layout helpers */
.app-shell {
  background: var(--bg-body, #FFFDF8);
  min-height: 100vh;
}

.app-content {
  max-width: var(--app-max-width);
  margin: 0 auto;
  padding: 1rem 1rem 1.5rem;
}

.app-section {
  margin-bottom: 1rem;
}

.app-sticky-actions {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg-card, #fff);
  border-bottom: 1px solid var(--border, #F1D9D2);
  padding: 0.75rem 1rem;
}

/* Toast */
.app-toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 1080;
}

.app-toast {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: var(--bg-card, #fff);
  border: 1px solid var(--border, #F1D9D2);
  border-left: 3px solid var(--color-primary);
  border-radius: 10px;
  box-shadow: var(--shadow-soft, 0 1px 3px rgba(0,0,0,0.06));
  padding: 0.75rem 0.9rem;
  min-width: 260px;
  max-width: 360px;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.app-toast.hide {
  opacity: 0;
  transform: translateY(6px);
}

.app-toast__icon {
  color: var(--color-primary);
  font-size: 1rem;
  line-height: 1;
}

.app-toast__body {
  flex: 1;
}

.app-toast__title {
  font-weight: 600;
  color: var(--text-main, #1E2430);
  margin-bottom: 0.1rem;
}

.app-toast__text {
  color: var(--text-sub, #4B5565);
  font-size: 0.875rem;
}

.app-toast__close {
  background: none;
  border: none;
  color: var(--text-muted, #6B7280);
  padding: 0.25rem;
  border-radius: 6px;
  cursor: pointer;
}

.app-toast__close:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--text-main, #1E2430);
}

.app-toast--success { border-left-color: var(--color-success); }
.app-toast--success .app-toast__icon { color: var(--color-success); }
.app-toast--danger { border-left-color: var(--color-danger); }
.app-toast--danger .app-toast__icon { color: var(--color-danger); }
.app-toast--warning { border-left-color: var(--color-warning); }
.app-toast--warning .app-toast__icon { color: var(--color-warning); }
.app-toast--info { border-left-color: var(--color-info); }
.app-toast--info .app-toast__icon { color: var(--color-info); }

/* Loading Overlay */
.app-loading-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay, rgba(18,25,38,0.35));
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1070;
}

.app-loading-box {
  background: var(--bg-card, #fff);
  padding: 1rem 1.25rem;
  border-radius: 10px;
  box-shadow: var(--shadow-soft, 0 1px 3px rgba(0,0,0,0.06));
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid var(--border, #F1D9D2);
}

/* Skeleton */
.skeleton {
  background: linear-gradient(90deg, rgba(225,229,239,0.9) 25%, rgba(246,247,251,0.9) 50%, rgba(225,229,239,0.9) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.2s ease-in-out infinite;
  border-radius: 6px;
}

.skeleton.text { height: 12px; }
.skeleton.avatar { width: 40px; height: 40px; border-radius: 50%; }
.skeleton.line { width: 100%; height: 12px; }
.skeleton.button { width: 96px; height: 32px; border-radius: 8px; }

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Empty state */
.app-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-sub, #4B5565);
}

.app-empty__icon {
  font-size: 3rem;
  color: var(--color-primary-light, #FF6B6B);
  opacity: 0.6;
  margin-bottom: 0.75rem;
}

.app-empty__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-main, #1E2430);
  margin-bottom: 0.35rem;
}

.app-empty__desc {
  font-size: 0.9rem;
  color: var(--text-sub, #4B5565);
  margin-bottom: 0.75rem;
}

/* Responsive table helper */
@media (max-width: 767.98px) {
  .table-responsive-stack thead {
    display: none;
  }
  .table-responsive-stack tbody tr {
    display: block;
    border: 1px solid var(--border, #F1D9D2);
    border-radius: 10px;
    padding: 0.75rem;
    margin-bottom: 0.75rem;
    background: var(--bg-card, #fff);
  }
  .table-responsive-stack tbody td {
    display: flex;
    justify-content: space-between;
    gap: 0.5rem;
    padding: 0.4rem 0;
    border: none;
  }
  .table-responsive-stack tbody td::before {
    content: attr(data-label);
    font-weight: 600;
    color: var(--text-sub, #4B5565);
  }
}

/* Utility helpers */
.text-muted-soft { color: var(--text-muted, #6B7280); }

.bg-card { background: var(--bg-card, #fff); }
.border-base { border: 1px solid var(--border, #F1D9D2); }
.shadow-soft { box-shadow: var(--shadow-soft, 0 1px 3px rgba(0,0,0,0.06)); }
.radius-md { border-radius: var(--radius-md, 8px); }
.radius-lg { border-radius: var(--radius-lg, 10px); }
.pill { border-radius: var(--radius-pill, 999px); }