.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 1;
    visibility: visible;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-content {
    text-align: center;
}

.loader-spinner {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    position: relative;
}

.loader-spinner::before,
.loader-spinner::after {
    content: '';
    position: absolute;
    border-radius: 50%;
}

.loader-spinner::before {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    opacity: 0.3;
}

.loader-spinner::after {
    width: 60px;
    height: 60px;
    border: 4px solid transparent;
    border-top-color: var(--primary-red);
    border-right-color: var(--primary-red);
    animation: spinner 0.8s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

@keyframes spinner {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.loader-text {
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 500;
    margin-top: 12px;
}

.loader-dots::after {
    content: '';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
    0%, 20% {
        content: '';
    }
    40% {
        content: '.';
    }
    60% {
        content: '..';
    }
    80%, 100% {
        content: '...';
    }
}

.content-loader {
    position: relative;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.content-loader .loader-spinner {
    width: 40px;
    height: 40px;
}

.content-loader .loader-spinner::before,
.content-loader .loader-spinner::after {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

.content-loader .loader-text {
    font-size: 14px;
}

.inline-loader {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.inline-loader .loader-spinner {
    width: 20px;
    height: 20px;
    margin: 0;
}

.inline-loader .loader-spinner::before,
.inline-loader .loader-spinner::after {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.inline-loader .loader-text {
    font-size: 14px;
    margin: 0;
}

.btn.loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn.loading::before {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spinner 0.6s linear infinite;
}

.btn-primary.loading::before {
    border-top-color: white;
    border-right-color: white;
}

.skeleton-loader {
    background: linear-gradient(
        90deg,
        var(--bg-dark) 25%,
        var(--bg-hover) 50%,
        var(--bg-dark) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
    border-radius: 8px;
}

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

.skeleton-text {
    height: 16px;
    margin-bottom: 8px;
}

.skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: 16px;
}

.skeleton-card {
    height: 120px;
    margin-bottom: 16px;
}

@media (max-width: 768px) {
    .loader-spinner {
        width: 50px;
        height: 50px;
    }
    
    .loader-spinner::before,
    .loader-spinner::after {
        width: 50px;
        height: 50px;
    }
    
    .loader-text {
        font-size: 14px;
    }
}