:root {
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --anim-fast: 180ms;
  --anim-med: 240ms;
  --anim-slow: 360ms;
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes menuIn {
  from {
    opacity: 0;
    transform: translateY(6px) scaleY(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scaleY(1);
  }
}

@keyframes menuOut {
  from {
    opacity: 1;
    transform: translateY(0) scaleY(1);
  }
  to {
    opacity: 0;
    transform: translateY(6px) scaleY(0.92);
  }
}

@keyframes bannerIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes messagePop {
  0% {
    opacity: 0;
    transform: translateY(10px) scale(0.98);
  }
  70% {
    opacity: 1;
    transform: translateY(-2px) scale(1.01);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes statusPop {
  from {
    opacity: 0.4;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes tileIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes mediaIn {
  from {
    opacity: 0;
    transform: scale(0.98);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes modalOut {
  from {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
  to {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

.modal:not([hidden]) .modal-card {
  animation: modalIn var(--anim-med) var(--ease-out);
}

.modal:not([hidden]) .modal-backdrop {
  animation: fadeIn var(--anim-med) var(--ease-out);
}

.call-modal:not([hidden]) .call-card {
  animation: modalIn var(--anim-med) var(--ease-out);
}

.call-modal:not([hidden]) .modal-backdrop {
  animation: fadeIn var(--anim-med) var(--ease-out);
}

.call-modal.is-leaving .call-card {
  animation: modalOut var(--anim-med) var(--ease-in-out);
}

.call-modal.is-leaving .modal-backdrop {
  animation: fadeOut var(--anim-med) var(--ease-in-out);
}

.user-menu-dropdown:not([hidden]) {
  transform-origin: bottom right;
  animation: menuIn var(--anim-fast) var(--ease-out);
}

.user-menu-dropdown.is-closing {
  transform-origin: bottom right;
  animation: menuOut var(--anim-fast) var(--ease-in-out);
  pointer-events: none;
}

.call-banner:not([hidden]) {
  animation: bannerIn var(--anim-med) var(--ease-out);
}

.message.message-enter {
  animation: messagePop var(--anim-fast) var(--ease-out);
  will-change: transform, opacity;
}

.status-icon.status-animate .icon {
  animation: statusPop var(--anim-fast) var(--ease-out);
}

.call-participant {
  --flip-x: 0px;
  --flip-y: 0px;
  --tile-scale: 1;
  animation: tileIn var(--anim-med) var(--ease-out);
  transform: translate(var(--flip-x), var(--flip-y)) scale(var(--tile-scale));
  transition:
    transform var(--anim-slow) var(--ease-in-out),
    opacity var(--anim-med) var(--ease-out),
    box-shadow var(--anim-slow) var(--ease-in-out),
    left var(--anim-slow) var(--ease-in-out),
    top var(--anim-slow) var(--ease-in-out),
    right var(--anim-slow) var(--ease-in-out),
    bottom var(--anim-slow) var(--ease-in-out),
    width var(--anim-slow) var(--ease-in-out),
    height var(--anim-slow) var(--ease-in-out);
  will-change: transform;
}

.call-participant.is-focus {
  box-shadow: 0 24px 60px color-mix(in srgb, var(--bg) 70%, transparent);
  --tile-scale: 1.01;
}

.call-participant.is-thumb {
  opacity: 0.92;
  --tile-scale: 0.96;
}

.call-incoming {
  animation: fadeIn var(--anim-med) var(--ease-out);
}

.lightbox {
  animation: fadeIn var(--anim-med) var(--ease-out);
}

.lightbox img,
.lightbox video {
  animation: mediaIn var(--anim-fast) var(--ease-out);
}

.dropdown-item,
.icon-button,
.button,
.call-control,
.message-action {
  transition:
    transform var(--anim-fast) var(--ease-out),
    box-shadow var(--anim-fast) var(--ease-out),
    border-color var(--anim-fast) var(--ease-out),
    background var(--anim-fast) var(--ease-out);
}

.dropdown-item:active,
.icon-button:active,
.button:active,
.call-control:active,
.message-action:active {
  transform: scale(0.98);
}