/* ═══════════════════════════════════════
   MICROANIMAÇÕES & TRANSIÇÕES
   v3.4 — refinamento premium
═══════════════════════════════════════ */

/* Transições globais sutis em superfícies interativas */
.card, .btn, .nav-tab, .field-input, .field-select,
.piece-card, .furniture-item, .mcard {
  transition:
    background-color var(--t-base) var(--ease),
    border-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease),
    transform var(--t-fast) var(--ease-out),
    color var(--t-base) var(--ease);
}

/* Hover lift sutil em cards clicáveis (sem afetar cards estáticos) */
.furniture-item:hover,
.mcard:hover,
[data-act]:not(button):not(input):hover {
  transform: translateY(-1px);
  box-shadow: var(--sh2);
}

/* Botões — press-down feedback */
.btn:active {
  transform: scale(0.97);
  transition-duration: 60ms;
}

/* Botão primário com hover sutil */
.btn-primary:hover {
  background: var(--amber-hover);
  box-shadow: var(--sh-amber);
}

/* Inputs com focus ring suave */
.field-input:focus,
.field-select:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-glow);
}

/* ═══════ Modal fade-in ═══════ */
@keyframes modalFadeIn {
  from { opacity: 0; backdrop-filter: blur(0); }
  to   { opacity: 1; backdrop-filter: blur(2px); }
}

@keyframes modalSlideUp {
  from { opacity: 0; transform: translateY(12px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0)   scale(1); }
}

#planPreviewOverlay {
  animation: modalFadeIn var(--t-base) var(--ease-out);
}

#planPreviewOverlay > div {
  animation: modalSlideUp var(--t-slow) var(--ease-out);
}

/* ═══════ Skeleton loader ═══════ */
@keyframes skeletonShimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface2) 0%,
    var(--surface3) 50%,
    var(--surface2) 100%
  );
  background-size: 200% 100%;
  animation: skeletonShimmer 1.4s ease-in-out infinite;
  border-radius: var(--r-sm);
  color: transparent !important;
  pointer-events: none;
  user-select: none;
}

/* ═══════ Tab indicator slide ═══════ */
.nav-tab {
  position: relative;
}
.nav-tab::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--amber);
  border-radius: 2px 2px 0 0;
  transform: translateX(-50%);
  transition: width var(--t-base) var(--ease-out);
}
.nav-tab.active::after {
  width: 60%;
}

/* ═══════ Spin (loading spinner) ═══════ */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--bdr);
  border-top-color: var(--amber);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

/* ═══════ Fade-in genérico ═══════ */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn var(--t-base) var(--ease-out);
}

/* ═══════ Config mobile fixes ═══════ */
/* Logo grid: 2 colunas no desktop, empilha no mobile */
.config-logo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
@media (max-width: 600px) {
  .config-logo-grid {
    grid-template-columns: 1fr;
  }
  /* Form grid genérico também empilha em telas estreitas */
  .form-grid {
    grid-template-columns: 1fr !important;
  }
  /* Cards podem encostar menos nas laterais no mobile */
  .scroll { padding-left: 12px !important; padding-right: 12px !important; }
}

/* ═══════ Respeitar reduce-motion ═══════ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}