/* KEYFRAMES */

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

@keyframes pulseGlow {
    0% { box-shadow: 0 0 10px var(--primary-glow); }
    50% { box-shadow: 0 0 25px var(--primary-glow); }
    100% { box-shadow: 0 0 10px var(--primary-glow); }
}

@keyframes slideUpFade {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes zoomIn {
    0% { opacity: 0; transform: scale(0.8); }
    100% { opacity: 1; transform: scale(1); }
}

@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

/* ANIMATION CLASSES */

.anim-slide-up {
    animation: slideUpFade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.anim-zoom-in {
    animation: zoomIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.anim-fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.anim-float {
    animation: float 4s ease-in-out infinite;
}

.anim-pulse {
    animation: pulseGlow 2s infinite;
}

/* Delay utilities */
.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }

/* Shimmer effect utility */
.shimmer-text {
    background: linear-gradient(90deg, var(--text-main) 0%, #fff 50%, var(--text-main) 100%);
    background-size: 200% auto;
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

/* Page Transition Overlay */
#page-transition {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--bg-dark);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#page-transition.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-ring {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-glass);
    border-top-color: var(--secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}