/* Loading Animations */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 1;
    transition: opacity 0.5s ease;
}

.loading-overlay.fade-out {
    opacity: 0;
    pointer-events: none;
}

.loading-spinner {
    position: relative;
    width: 80px;
    height: 80px;
}

.loading-spinner::before,
.loading-spinner::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: var(--primary-color);
    animation: spin 1s linear infinite;
}

.loading-spinner::before {
    width: 80px;
    height: 80px;
    top: 0;
    left: 0;
}

.loading-spinner::after {
    width: 60px;
    height: 60px;
    top: 10px;
    left: 10px;
    border-top-color: var(--secondary-color);
    animation-duration: 0.8s;
    animation-direction: reverse;
}

/* Page Load Animations */
.animate-on-load {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-load.loaded {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger Animation */
.stagger-animation > * {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-animation.loaded > * {
    opacity: 1;
    transform: translateY(0);
}

.stagger-animation.loaded > *:nth-child(1) { transition-delay: 0.1s; }
.stagger-animation.loaded > *:nth-child(2) { transition-delay: 0.2s; }
.stagger-animation.loaded > *:nth-child(3) { transition-delay: 0.3s; }
.stagger-animation.loaded > *:nth-child(4) { transition-delay: 0.4s; }
.stagger-animation.loaded > *:nth-child(5) { transition-delay: 0.5s; }
.stagger-animation.loaded > *:nth-child(6) { transition-delay: 0.6s; }

/* Button Loading States */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

.btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.skeleton-text {
    height: 1em;
    margin-bottom: 0.5em;
    border-radius: 4px;
}

.skeleton-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
}

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

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Performance Optimizations */
.low-performance * {
    animation-duration: 0.1s !important;
    transition-duration: 0.1s !important;
}

.low-performance .parallax-element {
    transform: none !important;
}

.low-performance .custom-cursor,
.low-performance .cursor-follower {
    display: none !important;
}