/* ============================================
   Animations: Rolling Numbers, Flash, Burn-in
   ============================================ */

/* --- Toss-style Rolling Number Animation --- */
.rolling-number {
    display: inline-flex;
    align-items: baseline;
    overflow: hidden;
    line-height: 1;
}

.digit-slot {
    display: inline-block;
    height: 1em;
    overflow: hidden;
    position: relative;
}

.digit-column {
    display: flex;
    flex-direction: column;
    transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    will-change: transform;
}

.digit-column span {
    display: block;
    height: 1em;
    line-height: 1;
    text-align: center;
}

.digit-separator {
    display: inline-block;
    height: 1em;
    line-height: 1;
}

/* --- Price Flash Animation (fade in → fade out) --- */
@keyframes flash-up {
    0% {
        box-shadow: none;
        background: var(--card);
    }
    30% {
        box-shadow: inset 0 0 0 2px var(--up-color);
        background: var(--up-bg);
    }
    60% {
        box-shadow: inset 0 0 0 1px hsl(142.1 76.2% 50% / 0.15);
    }
    100% {
        box-shadow: none;
        background: var(--card);
    }
}

@keyframes flash-down {
    0% {
        box-shadow: none;
        background: var(--card);
    }
    30% {
        box-shadow: inset 0 0 0 2px var(--down-color);
        background: var(--down-bg);
    }
    60% {
        box-shadow: inset 0 0 0 1px hsl(0 84.2% 60% / 0.15);
    }
    100% {
        box-shadow: none;
        background: var(--card);
    }
}

.price-card.flash-up {
    animation: flash-up 1.5s ease-in-out;
}

.price-card.flash-down {
    animation: flash-down 1.5s ease-in-out;
}

/* --- Burn-in Prevention: Subtle Pixel Shift --- */
@keyframes pixel-shift {
    0%   { transform: translate(0, 0); }
    25%  { transform: translate(1px, 0.5px); }
    50%  { transform: translate(-0.5px, 1px); }
    75%  { transform: translate(0.5px, -1px); }
    100% { transform: translate(0, 0); }
}

.burn-in-shift {
    transition: transform 2s ease-in-out;
}