/* Shared feedback stays brief, keeps controls in place, and never drives the voice halo. */
:root {
  --motion-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-ui: 180ms;
  --motion-panel: 320ms;
}
button,
.mode-card,
.situation-option,
.menu-toggle {
  transition:
    background-color var(--motion-ui) ease,
    border-color var(--motion-ui) ease,
    color var(--motion-ui) ease,
    box-shadow var(--motion-ui) ease,
    transform var(--motion-ui) var(--motion-ease),
    scale var(--motion-ui) var(--motion-ease),
    opacity var(--motion-ui) ease,
    left var(--motion-panel) var(--motion-ease);
}
/* Independent scale keeps press feedback separate from entrance/hover transforms. */
button:enabled:active:where(:not(.voice-orb)) {
  scale: 0.96;
  transition-duration: 90ms;
}
:is(.mode-card, .situation-option, .nav, .mobile-brand):enabled:active {
  scale: 0.985;
}
button .icon,
.card-icon,
.situation-icon,
.card-link b,
.account > span:first-child {
  transition:
    transform var(--motion-ui) var(--motion-ease),
    background-color var(--motion-ui) ease,
    box-shadow var(--motion-ui) ease;
}
input,
select,
textarea {
  transition:
    border-color var(--motion-ui) ease,
    background-color var(--motion-ui) ease,
    box-shadow var(--motion-ui) ease;
}
input:focus,
select:focus,
textarea:focus {
  box-shadow: 0 0 0 3px #f2b73f20;
}
a {
  transition:
    color var(--motion-ui) ease,
    text-decoration-color var(--motion-ui) ease;
}
/* Touch devices get press feedback without a sticky raised card after tapping. */
@media (hover: none) {
  .mode-card:hover {
    transform: none;
    box-shadow: none;
  }
}
@media (hover: hover) and (pointer: fine) {
  button:enabled:hover:where(:not(.voice-orb, .nav, .menu-toggle)) {
    transform: translateY(-1px);
  }
  .mode-card:enabled:hover,
  .situation-option:enabled:hover,
  button.list-row:enabled:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 22px #1c244b12;
  }
  .gold-button:enabled:hover,
  .outline-button:enabled:hover {
    box-shadow: 0 4px 12px #1c244b14;
  }
  .nav:enabled:hover .icon,
  #mobile-menu nav button:enabled:hover > .icon:first-child,
  .mode-card:enabled:hover .card-icon,
  .situation-option:enabled:hover .situation-icon {
    transform: scale(1.08);
  }
  .mode-card:enabled:hover .card-link b {
    transform: translateX(3px);
  }
  #send-button:enabled:hover .icon {
    transform: translate(2px, -2px);
  }
  #attach-button:enabled:hover .icon {
    transform: rotate(-8deg);
  }
  .dialog-close:enabled:hover .icon,
  #close-mobile-menu:enabled:hover .icon {
    transform: rotate(90deg);
  }
  .account:enabled:hover > span:first-child {
    box-shadow: 0 0 0 4px #1c244b08;
  }
  .mobile-menu-toggle:enabled:hover {
    background: #edf0f7;
  }
}
/* Active navigation marks fade/scale in without moving the icon or text. */
.sidebar .nav::before {
  content: '';
  position: absolute;
  inset: 10px auto 10px 0;
  width: 3px;
  border-radius: 3px;
  background: var(--gold);
  opacity: 0;
  transform: scaleY(0.4);
  transition:
    opacity var(--motion-ui) ease,
    transform var(--motion-panel) var(--motion-ease);
}
.sidebar .nav.active::before {
  opacity: 1;
  transform: scaleY(1);
}
#home-view:not([hidden]) .hero-content,
#home-view:not([hidden]) .section-heading,
.mode-card,
.situation-option,
.message,
.chat-welcome,
.list-row,
.empty-state,
.attachment-preview,
#attachment-selection:not([hidden]) {
  animation: rise-in var(--motion-panel) var(--motion-ease) backwards;
}
/* Cap stagger at 100 ms so every option is immediately usable. */
:is(.mode-grid, .situation-grid, .list-content) > :nth-child(2) {
  animation-delay: 25ms;
}
:is(.mode-grid, .situation-grid, .list-content) > :nth-child(3) {
  animation-delay: 50ms;
}
:is(.mode-grid, .situation-grid, .list-content) > :nth-child(4) {
  animation-delay: 75ms;
}
:is(.mode-grid, .situation-grid, .list-content) > :nth-child(n + 5) {
  animation-delay: 100ms;
}
.notice:not([hidden]) {
  animation: rise-in 240ms var(--motion-ease) backwards;
}
dialog[open] {
  animation: dialog-in 280ms var(--motion-ease) backwards;
}
dialog[open]::backdrop {
  animation: fade-in 240ms ease backwards;
}
#mobile-menu[open] {
  animation: mobile-menu-in var(--motion-panel) var(--motion-ease) backwards;
}
#mobile-menu[open] :is(.mobile-course-picker, .mobile-menu-sections) {
  animation: rise-in var(--motion-panel) var(--motion-ease) backwards;
}
#mobile-menu[open] .mobile-menu-sections {
  animation-delay: 60ms;
}
button[aria-busy='true']::after {
  content: '';
  display: inline-block;
  width: 12px;
  height: 12px;
  flex: 0 0 12px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 5px;
  align-self: flex-start;
  color: var(--blue);
}
.typing-indicator > span {
  font-size: 11px;
  margin-right: 6px;
}
.typing-indicator i {
  width: 5px;
  height: 5px;
  background: currentColor;
  border-radius: 50%;
  animation: typing-dot 1.2s ease-in-out infinite;
}
.typing-indicator i:nth-of-type(2) {
  animation-delay: 150ms;
}
.typing-indicator i:nth-of-type(3) {
  animation-delay: 300ms;
}
@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes dialog-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes typing-dot {
  0%,
  60%,
  100% {
    opacity: 0.4;
    transform: translateY(0);
  }
  30% {
    opacity: 1;
    transform: translateY(-3px);
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scale: none !important;
    scroll-behavior: auto !important;
  }
  button:enabled:hover,
  button:enabled:active,
  .mode-card:enabled:hover .card-link b,
  button:enabled:hover:where(:not(.menu-toggle)) .icon,
  button:enabled:hover .card-icon,
  button:enabled:hover .situation-icon {
    transform: none !important;
    scale: none;
  }
}