/* Pure-CSS animation utilities. No Blazor StateHasChanged required.
   Apply via class; remove via class toggle to replay. */

/* ---------- Keyframes ---------- */

@keyframes m16-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes m16-fade-out {
    from { opacity: 1; }
    to   { opacity: 0; }
}

@keyframes m16-slide-up {
    from { opacity: 0; transform: translateY(16px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes m16-slide-down {
    from { opacity: 0; transform: translateY(-16px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes m16-slide-in-right {
    from { opacity: 0; transform: translateX(24px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes m16-scale-pop {
    0%   { transform: scale(0.85); }
    60%  { transform: scale(1.08); }
    100% { transform: scale(1); }
}

@keyframes m16-pulse {
    0%, 100% { transform: scale(1); }
    50%      { transform: scale(1.04); }
}

@keyframes m16-glow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(26, 92, 122, 0); }
    50%      { box-shadow: 0 0 0 8px rgba(26, 92, 122, 0.45); }
}

@keyframes m16-glow-success {
    0%, 100% { box-shadow: 0 0 0 0 rgba(76, 175, 80, 0); }
    50%      { box-shadow: 0 0 0 10px rgba(76, 175, 80, 0.45); }
}

@keyframes m16-glow-danger {
    0%, 100% { box-shadow: 0 0 0 0 rgba(230, 57, 70, 0); }
    50%      { box-shadow: 0 0 0 10px rgba(230, 57, 70, 0.45); }
}

@keyframes m16-shake {
    0%, 100%       { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-3px); }
    20%, 40%, 60%, 80%      { transform: translateX(3px); }
}

@keyframes m16-skeleton-pulse {
    0%, 100% { opacity: 1; }
    50%      { opacity: 0.55; }
}

@keyframes m16-bounce-soft {
    0%, 100%      { transform: translateY(0); }
    50%           { transform: translateY(-2px); }
}

@keyframes m16-spin {
    to { transform: rotate(360deg); }
}

/* ---------- Utility classes ---------- */

.anim-fade-in        { animation: m16-fade-in     var(--dur-base) var(--ease-out) both; }
.anim-fade-out       { animation: m16-fade-out    var(--dur-base) var(--ease-in)  both; }
.anim-slide-up       { animation: m16-slide-up    var(--dur-base) var(--ease-out) both; }
.anim-slide-down     { animation: m16-slide-down  var(--dur-base) var(--ease-out) both; }
.anim-slide-in-right { animation: m16-slide-in-right var(--dur-base) var(--ease-out) both; }
.anim-scale-pop      { animation: m16-scale-pop   var(--dur-slow) var(--ease-spring) both; }
.anim-pulse          { animation: m16-pulse 2s ease-in-out infinite; }
.anim-glow           { animation: m16-glow 1.4s ease-in-out 1; }
.anim-glow-success   { animation: m16-glow-success 1.4s ease-in-out 1; }
.anim-glow-danger    { animation: m16-glow-danger 1.4s ease-in-out 1; }
.anim-shake          { animation: m16-shake var(--dur-slow) var(--ease-in-out) 1; }
.anim-bounce-soft    { animation: m16-bounce-soft 1s ease-in-out infinite; }
.anim-spin           { animation: m16-spin 1s linear infinite; }

/* Card hover-only emphasis (does not run on its own) */
.hover-lift {
    transition: transform var(--dur-base) var(--ease-out),
                box-shadow var(--dur-base) var(--ease-out);
}
.hover-lift:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-card-hover);
}

.hover-pop {
    transition: transform var(--dur-fast) var(--ease-spring);
}
.hover-pop:hover { transform: scale(1.04); }

/* Page-transition coordinator (toggled by INavigationFeedbackService) */
.page-leaving { animation: m16-fade-out var(--dur-base) var(--ease-in) forwards; }
.page-entering { animation: m16-slide-up var(--dur-slow) var(--ease-out) both; }
.page-leaving-slideup { animation-name: m16-fade-out; }
.page-leaving-fade { animation-name: m16-fade-out; }
.page-entering-slideup { animation-name: m16-slide-up; }
.page-entering-fade { animation-name: m16-fade-in; }

/* Skeleton loader — flat surface with an opacity pulse (no shimmer sweep) */
.skeleton {
    background: var(--border-default);
    animation: m16-skeleton-pulse 1.4s ease-in-out infinite;
    border-radius: var(--r-sm);
    color: transparent;
}

.skeleton-text {
    height: 1em;
    margin: 0.4em 0;
}
.skeleton-text.short { width: 40%; }
.skeleton-text.med   { width: 70%; }
.skeleton-text.long  { width: 92%; }

.skeleton-card {
    height: 180px;
    width: 100%;
    border-radius: var(--r-lg);
}

/* Pressed-state feedback for tap targets */
.tap-feedback {
    transition: transform var(--dur-instant) var(--ease-out),
                filter var(--dur-fast) var(--ease-out);
}
.tap-feedback:active {
    transform: scale(0.97);
    filter: brightness(0.96);
}

body.m16-suppress-visual-haptics #m16-haptic-root {
    display: none !important;
    opacity: 0 !important;
    background: transparent !important;
    border: 0 !important;
    animation: none !important;
}

body.m16-suppress-visual-haptics .m16-haptic-target {
    animation: none !important;
    transition: none !important;
    transform: none !important;
    opacity: 1 !important;
}

/* Honor user motion preferences */
@media (prefers-reduced-motion: reduce) {
    .anim-fade-in, .anim-fade-out, .anim-slide-up, .anim-slide-down,
    .anim-slide-in-right, .anim-scale-pop, .anim-pulse,
    .anim-glow, .anim-glow-success, .anim-glow-danger,
    .anim-shake, .anim-bounce-soft, .skeleton,
    .page-leaving, .page-entering {
        animation: none !important;
    }
    .hover-lift, .hover-pop, .tap-feedback {
        transition: none !important;
    }
}