.series-follow-btn {
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.15s ease;
    white-space: nowrap;
    border-width: 1px;
    border-style: solid;
}

.series-follow-btn:hover {
    filter: brightness(1.2);
    transform: translateY(-1px);
}

.series-follow-btn.following:hover {
    background: rgba(239, 68, 68, 0.15) !important;
    border-color: rgba(239, 68, 68, 0.4) !important;
    color: #ef4444 !important;
}

.series-follow-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    filter: none;
}

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

.series-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    border-radius: 12px;
    border: 1px solid;
    margin-bottom: 20px;
}

.series-header-icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.series-header-icon {
    font-size: 30px;
}

.series-header-info {
    flex: 1;
    min-width: 0;
}

.series-header-info h1 {
    margin: 0 0 4px 0;
    font-size: 24px;
    font-weight: 700;
}

.series-header-info p {
    margin: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 768px) {
    .series-header {
        flex-wrap: wrap;
    }
    
    .series-follow-btn {
        width: 100%;
        justify-content: center;
    }
}