/* ============================================================
   TOP ARTE 3D — STL Modal
   ============================================================ */

#stlModal {
  display: none;
}

#stlModal.open {
  display: block;
}

.stl-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(8px);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: modal-fade-in 0.3s ease;
}

@keyframes modal-fade-in {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.stl-modal-box {
  background: var(--bg-secondary);
  border: 1px solid rgba(0,174,239,0.2);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 700px;
  overflow: hidden;
  animation: modal-slide-up 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 30px 80px rgba(0,0,0,0.6), 0 0 60px rgba(0,174,239,0.1);
}

@keyframes modal-slide-up {
  from { opacity: 0; transform: translateY(30px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.stl-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.stl-modal-title {
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
}

.stl-modal-close {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  color: var(--gray-mid);
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
}

.stl-modal-close:hover {
  border-color: var(--blue-main);
  color: var(--blue-main);
  background: rgba(0,174,239,0.08);
}

.stl-modal-close svg {
  width: 16px;
  height: 16px;
}

.stl-modal-viewer {
  width: 100%;
  aspect-ratio: 16/10;
  background: radial-gradient(ellipse at center, rgba(0,174,239,0.06), var(--bg-primary));
  position: relative;
}

.stl-modal-viewer canvas {
  display: block;
}

.stl-modal-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 24px;
  font-size: 0.75rem;
  color: var(--gray-mid);
  border-top: 1px solid rgba(255,255,255,0.04);
  font-family: var(--font-primary);
  letter-spacing: 0.04em;
}

@media (max-width: 767px) {
  .stl-modal-viewer {
    aspect-ratio: 4/3;
  }
}