/* Unified Button System - MD3 + Tailwind Compatible */
/* Dependencies: app_md3.css must load first for CSS variables */

@layer legacy {

/* === BASE BUTTON STYLES === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-weight: 600;
  font-size: 0.875rem;
  line-height: 1.25rem;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: none;
  outline: none;
  user-select: none;
  white-space: nowrap;
}

/* === BUTTON VARIANTS === */
.btn-primary {
  background-color: var(--sys-primary);
  color: var(--sys-on-primary);
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(10, 104, 255, 0.25);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--sys-primary-container);
  color: var(--sys-primary);
  border: 1px solid var(--sys-outline);
}

.btn-secondary:hover {
  background-color: var(--sys-primary);
  color: var(--sys-on-primary);
  transform: translateY(-1px);
}

.btn-neutral, .btn-ghost {
  background-color: transparent;
  color: var(--sys-on-surface);
  border: 1px solid var(--sys-outline);
}

.btn-neutral:hover, .btn-ghost:hover {
  background-color: var(--sys-surface-2, #f3f4f6);
}

.btn-danger {
  background-color: var(--sys-error-container);
  color: var(--sys-error);
}

.btn-danger:hover {
  background-color: var(--sys-error);
  color: white;
}

/* === SIZE VARIANTS === */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  line-height: 1rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
  line-height: 1.5rem;
}

/* === STATES === */
.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn:focus-visible {
  outline: 3px solid var(--sys-primary);
  outline-offset: 2px;
}

/* === ICON ALIGNMENT === */
.btn i, .btn svg {
  vertical-align: middle;
  flex-shrink: 0;
}

/* === CHIP STYLES (Category/Action chips) === */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-weight: 500;
  font-size: 0.875rem;
  background-color: var(--sys-surface);
  border: 1px solid var(--sys-outline);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
}

.chip:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.chip i, .chip svg {
  vertical-align: middle;
  flex-shrink: 0;
}

/* === VIEW DETAILS BUTTON (specific to spending card) === */
#toggle-spending-details {
  background: transparent;
  border: none;
  color: var(--sys-primary);
  font-weight: 600;
  font-size: 0.75rem;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: 0.5rem;
  transition: background-color 0.2s;
}

#toggle-spending-details:hover {
  background-color: var(--sys-primary-container);
}

} /* end @layer legacy */