/* ============================================================
   Keyframe Animations
   ============================================================ */

/* Skeleton shimmer loading */
@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

/* Pulsing dot (status indicators) */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.85);
    }
}

/* Slide in from right (panels, messages) */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Slide in from left (sidebar) */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Slide in from bottom (modals, banners) */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Slide down (dropdowns) */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Fade in */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* Fade out */
@keyframes fadeOut {
    from {
        opacity: 1;
    }

    to {
        opacity: 0;
    }
}

/* Spin (loading spinners) */
@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Blinking cursor (streaming) */
@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* Bounce (notification badges) */
@keyframes bounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-4px);
    }
}

/* Scale in (modals, tooltips) */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Utility classes */
.animate-shimmer {
    background: linear-gradient(90deg,
            var(--bg-tertiary) 25%,
            var(--bg-secondary) 50%,
            var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

.animate-pulse {
    animation: pulse 2s infinite var(--ease-default);
}

.animate-fade-in {
    animation: fadeIn var(--duration-normal) var(--ease-out);
}

.animate-slide-in {
    animation: slideInRight var(--duration-normal) var(--ease-out);
}

.animate-slide-up {
    animation: slideInUp var(--duration-normal) var(--ease-out);
}

.animate-scale-in {
    animation: scaleIn var(--duration-fast) var(--ease-bounce);
}

.animate-spin {
    animation: spin 1s linear infinite;
}

.animate-blink {
    animation: blink 1s step-end infinite;
}