/* ── Display ── */
.d-flex   { display: flex; }
.d-grid   { display: grid; }
.d-block  { display: block; }
.d-none   { display: none; }
.d-inline { display: inline; }
.d-inline-flex { display: inline-flex; }

/* ── Flex helpers ── */
.align-center   { align-items: center; }
.align-start    { align-items: flex-start; }
.align-end      { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between{ justify-content: space-between; }
.justify-end    { justify-content: flex-end; }
.flex-wrap      { flex-wrap: wrap; }
.flex-1         { flex: 1; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

/* ── Texto ── */
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-left    { text-align: left; }
.text-primary { color: var(--color-primary) !important; }
.text-success { color: var(--color-success) !important; }
.text-danger  { color: var(--color-danger)  !important; }
.text-warning { color: var(--color-warning) !important; }
.text-muted   { color: var(--text-muted)    !important; }
.text-white   { color: var(--color-white)   !important; }
.fw-400 { font-weight: 400; }
.fw-500 { font-weight: 500; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.text-truncate { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }

/* ── Márgenes ── */
.m-0  { margin: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mb-2 { margin-bottom: var(--space-2) !important; }
.mb-4 { margin-bottom: var(--space-4) !important; }
.mb-6 { margin-bottom: var(--space-6) !important; }
.mt-2 { margin-top: var(--space-2) !important; }
.mt-4 { margin-top: var(--space-4) !important; }
.mt-6 { margin-top: var(--space-6) !important; }
.ms-auto { margin-left: auto !important; }

/* ── Padding ── */
.p-0 { padding: 0 !important; }
.p-4 { padding: var(--space-4) !important; }
.p-6 { padding: var(--space-6) !important; }

/* ── Width ── */
.w-100  { width: 100%; }
.w-50   { width: 50%; }
.mw-400 { max-width: 400px; }
.mw-600 { max-width: 600px; }

/* ── Bordes ── */
.rounded    { border-radius: var(--border-radius) !important; }
.rounded-sm { border-radius: var(--border-radius-sm) !important; }
.rounded-lg { border-radius: var(--border-radius-lg) !important; }
.rounded-full { border-radius: 50% !important; }
.border { border: 1px solid var(--border-color); }

/* ── Fondo ── */
.bg-white   { background: var(--color-white) !important; }
.bg-gray    { background: var(--color-gray-100) !important; }
.bg-primary { background: var(--color-primary) !important; }

/* ── Sombras ── */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow    { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* ── Overflow ── */
.overflow-hidden { overflow: hidden; }
.overflow-auto   { overflow: auto; }

/* ── Cursor ── */
.pointer { cursor: pointer; }

/* ── Animaciones ── */
.fade-in {
  animation: fadeIn .3s ease forwards;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.spin {
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Loading spinner ── */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--color-gray-300);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
  display: inline-block;
}
.spinner-lg { width: 40px; height: 40px; border-width: 3px; }

/* ── Divisor ── */
.divider {
  height: 1px;
  background: var(--border-color);
  margin: var(--space-4) 0;
}

/* ── Estado vacío ── */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-6);
  color: var(--text-muted);
}
.empty-state i { font-size: 3rem; opacity: .35; margin-bottom: var(--space-4); }
.empty-state h4 { color: var(--text-secondary); margin-bottom: var(--space-2); }