/* =============================================
   APP ADDITIONS — only additive styles for the
   functional app (toasts, widgets, builder, upload).
   The original design-system files are not modified.
   ============================================= */

/* --- Toasts --- */
.toaster {
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: min(360px, calc(100vw - 2 * var(--space-5)));
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-left: 4px solid var(--color-text-muted);
  box-shadow: var(--shadow-lg);
  font-size: var(--text-sm);
  color: var(--color-text);
  animation: toast-in 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.toast--success { border-left-color: var(--color-success); }
.toast--error { border-left-color: var(--color-error); }
.toast--info { border-left-color: var(--color-primary); }
.toast__icon { flex-shrink: 0; margin-top: 2px; }
.toast--success .toast__icon { color: var(--color-success); }
.toast--error .toast__icon { color: var(--color-error); }
.toast--info .toast__icon { color: var(--color-primary); }
.toast__msg { flex: 1; line-height: 1.4; }
@keyframes toast-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

/* --- App page transitions / loading --- */
.app-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  color: var(--color-text-muted);
  gap: var(--space-3);
}
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Dashboard home extras --- */
.section-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-6);
  margin-top: var(--space-6);
}
@media (max-width: 860px) { .section-grid { grid-template-columns: 1fr; } }

.list-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
}
.list-row:last-child { border-bottom: none; }
.list-row__icon {
  width: 36px; height: 36px; flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
}
.list-row__main { flex: 1; min-width: 0; }
.list-row__title { font-size: var(--text-sm); font-weight: 600; }
.list-row__sub { font-size: var(--text-xs); color: var(--color-text-muted); }

/* --- AI chat additions --- */
.chat-msg--ai.is-error { border-color: var(--color-error); }
.chat-typing { display: inline-flex; gap: 4px; align-items: center; }
.chat-typing span {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-text-faint);
  animation: blink 1.2s infinite ease-in-out both;
}
.chat-typing span:nth-child(2) { animation-delay: 0.2s; }
.chat-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes blink { 0%, 80%, 100% { opacity: 0.3; } 40% { opacity: 1; } }
.chat-suggestions { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.chat-suggestion {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.chat-suggestion:hover { border-color: var(--color-primary); color: var(--color-primary); }

/* --- Dashboard builder --- */
.builder-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-6);
  align-items: start;
}
@media (max-width: 860px) { .builder-layout { grid-template-columns: 1fr; } }

.widget-palette { display: flex; flex-direction: column; gap: var(--space-3); }
.widget-palette__item {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  cursor: grab;
  font-size: var(--text-sm); font-weight: 500;
  transition: all var(--transition-fast);
  text-align: left; width: 100%;
}
.widget-palette__item:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-1px); }
.widget-palette__item:active { cursor: grabbing; }
.widget-palette__item svg { color: var(--color-primary); flex-shrink: 0; }

.builder-canvas {
  min-height: 420px;
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-5);
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
  align-content: start;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.builder-canvas.is-empty { display: flex; align-items: center; justify-content: center; }
.builder-canvas.drag-over { border-color: var(--color-primary); background: var(--color-primary-light); }
@media (max-width: 700px) { .builder-canvas { grid-template-columns: 1fr; } }

/* --- Widget card --- */
.widget {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: 240px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.widget:hover { box-shadow: var(--shadow-md); }
.widget--span2 { grid-column: 1 / -1; }
.widget__head {
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-3);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-divider);
}
.widget__title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-base); }
.widget__actions { display: flex; gap: var(--space-1); flex-shrink: 0; }
.widget__body { flex: 1; min-height: 0; }
.widget__placeholder {
  flex: 1; display: flex; flex-direction: column; gap: var(--space-2);
  align-items: center; justify-content: center;
  color: var(--color-text-faint); font-size: var(--text-sm); text-align: center;
  min-height: 160px;
}
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}
@media (max-width: 700px) { .dashboard-grid { grid-template-columns: 1fr; } }

/* --- Dashboard card (list) --- */
.dashboard-card {
  background: var(--color-surface);
  border: 1px solid var(--color-divider);
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  transition: all var(--transition-interactive);
  display: flex; flex-direction: column;
}
.dashboard-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.dashboard-card__preview {
  height: 140px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-surface-2));
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
  border-bottom: 1px solid var(--color-divider);
}
.dashboard-card__body { padding: var(--space-5); flex: 1; }
.dashboard-card__title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-base); margin-bottom: var(--space-1); }
.dashboard-card__meta { font-size: var(--text-xs); color: var(--color-text-muted); }
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-5);
}

/* --- File dropzone --- */
.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-6);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--color-text-muted);
}
.dropzone:hover, .dropzone.drag-over { border-color: var(--color-primary); background: var(--color-primary-light); color: var(--color-primary); }
.dropzone svg { margin: 0 auto var(--space-3); }

.table-wrap { overflow-x: auto; border: 1px solid var(--color-divider); border-radius: var(--radius-lg); }

/* --- Avatar in tables --- */
.avatar {
  width: 32px; height: 32px; flex-shrink: 0;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: var(--text-xs);
}
.cell-user { display: flex; align-items: center; gap: var(--space-3); }

/* --- Progress bar --- */
.progress { height: 8px; border-radius: var(--radius-full); background: var(--color-surface-2); overflow: hidden; }
.progress__fill { height: 100%; background: var(--color-primary); border-radius: var(--radius-full); transition: width 0.4s ease; }

/* --- Misc helpers --- */
.stack { display: flex; flex-direction: column; gap: var(--space-5); }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }
.muted-box {
  background: var(--color-surface-2);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.toggle {
  position: relative; width: 44px; height: 24px; flex-shrink: 0;
  border-radius: var(--radius-full); background: var(--color-border);
  transition: background var(--transition-fast); cursor: pointer; border: none;
}
.toggle.on { background: var(--color-primary); }
.toggle::after {
  content: ""; position: absolute; top: 2px; left: 2px;
  width: 20px; height: 20px; border-radius: 50%; background: #fff;
  transition: transform var(--transition-fast);
}
.toggle.on::after { transform: translateX(20px); }
.field-error { color: var(--color-error); font-size: var(--text-xs); }
.tab-panel { padding-top: var(--space-6); }