/**
 * O6 Toolkit - Preloader & Page Transitions
 */
.o6tk-preloader {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.o6tk-preloader__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
}
.o6tk-preloader__logo {
    max-width: 100%;
    height: auto;
}
/* Dots spinner */
.o6tk-preloader__spinner--dots {
    display: flex;
    gap: 8px;
}
.o6tk-preloader__spinner--dots span {
    width: 10px; height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.6);
    animation: o6tk-dots 1.2s ease-in-out infinite;
}
.o6tk-preloader__spinner--dots span:nth-child(2) { animation-delay: 0.2s; }
.o6tk-preloader__spinner--dots span:nth-child(3) { animation-delay: 0.4s; }
@keyframes o6tk-dots {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40% { transform: scale(1); opacity: 1; }
}
/* Ring spinner */
.o6tk-preloader__spinner--ring span:first-child {
    display: block;
    width: 40px; height: 40px;
    border: 3px solid rgba(255,255,255,0.15);
    border-top-color: rgba(255,255,255,0.8);
    border-radius: 50%;
    animation: o6tk-ring 0.8s linear infinite;
}
.o6tk-preloader__spinner--ring span:nth-child(2),
.o6tk-preloader__spinner--ring span:nth-child(3) { display: none; }
@keyframes o6tk-ring {
    to { transform: rotate(360deg); }
}
/* Bars spinner */
.o6tk-preloader__spinner--bars {
    display: flex;
    gap: 4px;
    align-items: center;
    height: 30px;
}
.o6tk-preloader__spinner--bars span {
    width: 4px;
    background: rgba(255,255,255,0.7);
    border-radius: 2px;
    animation: o6tk-bars 1s ease-in-out infinite;
}
.o6tk-preloader__spinner--bars span:nth-child(1) { height: 60%; animation-delay: 0s; }
.o6tk-preloader__spinner--bars span:nth-child(2) { height: 100%; animation-delay: 0.15s; }
.o6tk-preloader__spinner--bars span:nth-child(3) { height: 60%; animation-delay: 0.3s; }
@keyframes o6tk-bars {
    0%, 100% { transform: scaleY(0.6); }
    50% { transform: scaleY(1); }
}
/* Page transition overlay */
.o6tk-transition {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 999998;
    pointer-events: none;
    opacity: 0;
    visibility: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}
.o6tk-transition__spinner {
    opacity: 0;
    transition: opacity 0.3s ease 0.2s;
}
.o6tk-transition.is-active .o6tk-transition__spinner {
    opacity: 1;
}
.o6tk-transition__spinner span {
    display: block;
    width: 32px; height: 32px;
    border: 2px solid rgba(255,255,255,0.15);
    border-top-color: rgba(255,255,255,0.8);
    border-radius: 50%;
    animation: o6tk-ring 0.8s linear infinite;
}

@media (prefers-reduced-motion: reduce) {
    .o6tk-preloader__spinner--dots span,
    .o6tk-preloader__spinner--ring span,
    .o6tk-preloader__spinner--bars span { animation: none; }
}

@media print {
    .o6tk-preloader, .o6tk-transition { display: none !important; }
}